View source for Switchblade

{{Short description|Type of knife}}
{{About|a type of knife}}
{{Distinguish|Assisted-opening knife}}
[[File:Switchblade animated.gif|thumb|A folding switchblade|250x250px]]

A '''switchblade''' (also known as '''switch knife''', '''automatic knife''', '''pushbutton knife''', '''ejector knife''', '''flick knife''', '''gravity knife''', '''flick blade''', or '''spring knife''') is a [[pocketknife]] with a sliding or pivoting [[blade]] contained in the handle which is extended automatically by a [[spring (device)|spring]] when a button, lever, or switch on the handle or bolster is activated. Virtually all switchblades incorporate a [[Pocket knife#Lock-blade knives|locking blade]], a means of preventing the blade from being accidentally closed while in the open position. An unlocking mechanism must be activated in order to close the blade for storage.

During the 1950s, US newspapers as well as the [[tabloid press]] promoted the image of a new [[violent crime]] wave caused by young male delinquents with a switchblade or flick knife, based mostly on anecdotal evidence.<ref name="EN"/><ref>Levine, Bernard, "Switchblade Legacy", ''Knife World'', August 1990, pp. 27–29</ref> In 1954, Democratic Rep. [[James J. Delaney]] of New York authored the first bill submitted to the U.S. Congress banning the manufacture and sale of switchblades, beginning a wave of legal restrictions worldwide and a subsequent decline in their popularity.

== Method of operation ==
[[File:MT-Hawk-Scarab.jpg|left|thumb|A side opening (left) and out the front (OTF) knife]]

=== Side-opening ===
[[File:Benchcla.jpg|thumb|Benchmade 4300 CLA Composite Lite Auto. Auto knife push button operation with side mounted safety, reversible clip. Length {{convert|7.85|in|cm|abbr=on}} Blade length {{convert|3.4|in|cm|abbr=on}}. Blade Material CM154.]]

The most common type of switchblade is the side-opening or out-the-side (OTS) knife. These resemble traditional manually operated folding knives, but feature a coil or leaf spring which powers a blade that is released when the activation button is pressed. Side-opening knives may feature a safety mechanism that prevents the accidental actuation of the blade release mechanism.  Manipulation of a lever, slide button, bolster, or picklock releases the blade for closure.

=== Out the front (OTF) knives ===
{{See also|Sliding knife}}

==== Double action OTF knives ====
[[File:Automatic knife out the front double action.svg|thumb|300px|Schematic of double action out the front automatic knife]]

A double action out the front knife is so-called because the blade emerges from the front of the handle and the thumb stud can be moved forwards or backwards to extend or retract the knife respectively.

The knife blade (dark grey) is locked in position by a spring-loaded restraining pin (yellow and red) fitting into a notch in the blade at position 1. The two spring carriers (green) fit into the spaces on the slide (blue) and this assembly rests to the side of the blade. The right spring carrier is restrained by a tab at position 2 that fits over the end of the blade. Tension on the main spring (red zig-zag) holds the other spring carrier, slide and thumb stud (light grey) to the right.

When the thumb stud is pushed forward the slide and left spring carrier are free to travel. This increases tension on the main spring as the blade and right spring carrier are locked. A ramp on the slide impinges on the lower pin. When the pin evacuates the notch, the blade and right spring carrier are free to move. The right spring carrier moves only a short distance before it comes to rest in the slide. Momentum carries the blade further before flanges (not shown) retard its motion.

Another restraining pin at position 3 fits into a notch and locks the blade in the extended position. A tab on the left spring carrier fits into a hole in the blade at position 4 which restrains the left spring carrier. This allows reverse force on the thumb stud to increase tension in the main spring before the upper restraining pin releases and the blade and carrier can return to the closed position.

The small restraining pin at 3 is the only thing holding the blade open and is prone to failure if abused. The whole slide assembly moves only a short distance, exactly as far as the thumb stud moves. The force that causes the blade to extend or retract is equal to the force applied by the user on the thumb stud to stretch the main spring before it releases. For this reason the tip of the blade is unlikely to even break skin and is entirely incapable of causing significant injury when released though the edge of the blade may still cut as it moves as with any knife. Any object in the path of the extending blade may cause the blade to stop before it can lock in position. This is easily remedied by either pulling the blade out so that it locks or pushing it in till it locks and then redeploying.

Double-action knives have the advantages of being able to automatically retract the blade, as well as allowing the main spring to be in the "at rest" position whenever the knife is fully open or closed. However, because they have more complicated mechanisms, double-action OTFs will tend to be more expensive, have a weaker firing action, and a less-solid lockup than comparable single-action OTFs.

==== Single action OTF knives ====
[[File:Automatic knife out the front single action.svg|thumb|300px|Schematic of single action out the front automatic knife]]

A single action out the front knife operates under similar principles but will only automatically extend the blade which must then be manually retracted.

One spring post (green, left) is rigidly fixed to the handle (orange), the other spring post (green, right) is fastened to the base of the blade. The main spring (red) is under tension, but the blade cannot eject because the spring mounted button (light grey, its spring not shown) is resting in a notch in the blade. The cocking arm (blue) emerges through the base of the handle; friction with the handle holds it in place.

When the button is depressed (sideways into the handle or, as illustrated, into the page) a slot in it aligns with the blade and allows the blade to move forward. When the blade is fully extended flanges on the blade engage pins on the cocking arm retarding the blade's motion. The blade is locked in position when the rear notch of the blade allows the button to return to its rest position. Even if the button is pressed spring tension holds the knife open.

To retract the blade the button is again pressed so that its slot aligns with the blade. The cocking arm is pulled backwards which itself pulls the blade backward. When the blade is fully retracted the spring mounted button rests in the forward notch and again pops up and locks the blade in the cocked position. The cocking arm is then manually pushed forward to again sit flush with the handle.

Because the main spring is constantly acting on the blade and is extended by a far greater amount and is cocked by the whole hand and arm rather than by thumb the force it can exert on the blade is greater than with a double action knife. This will easily allow the tip of the blade to break skin when deployed and possibly penetrate a few millimetres (or hundredths of an inch) past it or to pass through light clothing. While still not a hugely strong design, because it is more firmly attached a good quality single action out the front blade displays less wobble and play than its comparable quality double action counterpart.

==Spring-assist knife vs. switchblade==
While operationally identical (in terms of one-handed opening), the "spring-assist" or "assisted opening" knife is not a switchblade or automatic knife. A switchblade opens its blade from the handle automatically to the fully locked and open position with the single press of a button, lever, or switch that is remotely mounted in the knife handle or bolster. In contrast, a spring-assist design uses either 1) manual pressure upon a protrusion on the blade itself or 2) movement of a lever or switch directly linked to the blade to initiate ''partial'' opening of the blade, at which point an internal spring propels the blade into the fully open, locked position. By this definition, some out-the-front automatics could be considered spring-assisted knives rather than switchblades, and some merchants in the United States sold them as such during periods of switchblade illegality.

Despite this difference in function, the criminal codes of many nations treat the assisted opening knife, like the switchblade, as a prohibited weapon. In the US, persons have occasionally been arrested or prosecuted by state law enforcement authorities for carrying assisted-opening knives defined as an illegal switchblade.<ref>{{Cite web|url=https://knifenews.com/ny-court-of-appeals-upholds-2017-switchblade-verdict/|title=NY Court of Appeals Upholds 2017 Switchblade Verdict|access-date=2019-05-31}}</ref><ref>"UPDATE: Motion for Reargument in NY Assisted-Opener = Switchblade Case Denied", KnifeRights.org, 28 October 2018, retrieved 22 March 2022 [https://kniferights.org/legislative-update/motion-for-reargument-filed-in-ny-assisted-opener-case-knife-rights-helps-defendant-who-had-ineffective-counsel/motion-for-reargument-in-ny-assisted-opener-switchblade-case-denied]</ref><ref>"Freddie Gray Falsely Arrested on Illegal Knife Charge – Update on the Freddie Gray Knife Arrest", KnifeRights.org, 1 May 2015, retrieved 28 March 2022 [https://kniferights.org/legislative-update/freddie-gray-falsely-arrested-on-illegal-knife-charge-update-on-the-freddie-gray-knife-arrest/]</ref>  An attempt to criminalize the sale of spring-assisted knives by federal law enforcement was forestalled by a US 2009 amendment (Amendment 1447) to 15 U.S.C. §1244.  This amendment provides that the Switchblade Knife Act shall not apply to ''spring-assist'' or ''assisted-opening'' knives (i.e. knives with closure-biased springs that require physical force applied to the blade to assist in opening the knife).<ref>Amendment 1447 to 15 U.S.C. §1244 adds a fifth exception to the definition of a switchblade knife: "Sections 1242 and 1243 of this title shall not apply to: 5) a knife that contains a spring, detent, or other mechanism designed to create a bias toward closure of the blade and that requires exertion applied to the blade by hand, wrist, or arm to overcome the bias toward closure to assist in opening the knife."</ref>

==Legality==
===Austria===
Beginning with the Austrian Arms Act of 1996<ref>Waffengesetz (1996): The 1996 version of the ''Waffengesetz'' appears to drop the switchblade from the category of prohibited weapons entirely, regardless of blade type: "Gegenüber der bisherigen Rechtslage sind nunmehr Waffen, mit denen ohne Verwendung von Patronen reizauslösende Mittel versprüht werden können, sowie Spring- und Fallmesser nicht mehr der Kategorie der verbotenen Waffen zuzurechnen&nbsp;... Im Hinblick auf andere ebenso gefährliche Stichwaffen (z.B. Butterflymesser) und die Tatsache, dass Spring- und Fallmesser in den übrigen EU-Mitgliedstaaten keineswegs verboten sind und daher von Touristen und anderen Reisenden, in Unkenntnis des österreichischen Waffengesetzes, mitgebracht werden, ließ es zweckmäßig erscheinen, auch diese Waffen aus der Liste der verbotenen zu streichen."</ref> switchblades, like all other knives, are generally legal to buy, import, possess or carry, regardless of blade length or opening or locking mechanism.<ref name="Waffengesetz 1996">Waffengesetz (1996)</ref> The only exception are minors (defined as persons under the age of 18) and people who have been expressly banned from owning and carrying any weapon (''Waffenverbot''): both groups may only possess knives which are not considered "weapons" under the Arms Act, defined as "objects that by their very nature are intended to reduce or eliminate the defensive ability of a person through direct impact".<ref name="Waffengesetz 1996"/> Switchblades usually fall under that definition.<ref name="Waffengesetz 1996"/>

In Austria the regulatory laws of individual states and the Assembly Act prohibit switchblades and other knives from being carried into a public building, school, public assembly, or public event.<ref>Jell, Sonja (Magistra) "[http://www.messer-portal.com/basiswissen/messerwissen/messer-und-reisen/waffengesetz-messer-in-oesterreich Weapons Law: Knives in Austria]"</ref>

===Australia===
In Australia, switchblades are banned by the Customs (Prohibited Imports) Regulations as a Prohibited Import. Australian customs refer to the automatic knife or switchblade as a flick knife. Australian law defines a flick knife as a knife that has a blade which opens automatically by gravity, by centrifugal force, or by any pressure applied to a button, spring or device in or attached to the handle of the knife, a definition that would cover not only switchblades and automatic-opening knives, but also [[Gravity knife|gravity knive]]s and [[Butterfly knife|balisong]]s.

At a state and local level, most jurisdictions declare flick knives to be prohibited weapons in their respective acts, codes and regulations. Persons residing in states that do not have specific weapons legislation covering switchblades (such as [[Tasmania]]) are still covered by Federal Customs legislation, but in conditions where the state has no legislation against such items, an exemption may be applied for and received if approved by the chief supervisory officer of the police service in that state.

Some states which have specific legislation against switchblades allow individuals to apply for an exemption from this legislation if they have a legitimate reason. For example, in the state of Victoria, a member of a bona fide knife-collectors' association, who is not a prohibited person (per the Firearms Act 1996), and meets other guidelines and conditions may apply to the Chief Commissioner of Police for a Prohibited Weapons Exemption to possess, carry, or otherwise own such a knife. This exemption may then, in turn, be used to apply to the Australian Customs Service for an import permit.<ref>{{cite web|url=http://www.customs.gov.au/site/page.cfm?u=4369#e1066|title=Australian Government Department of Immigration and Border Protection|website=www.customs.gov.au}}</ref>

===Belgium===
Article 3, §1 of the 2006 Weapons Act<ref name="LAL" /> lists the switchblade or automatic knife (''couteaux à cran d'arrêt et à lame jaillissante'') as a prohibited weapon.<ref>"[http://www.just.fgov.be/fr_htm/ordre_judiciaire/loi_sur_les_armes/index.html Nouvelle Loi sur les Armes]", retrieved 27 August 2011</ref> In Belgium, the police and local jurisdictions are also allowed to prohibit the carrying or possession of a wide variety of knives, which are not explicitly banned by law, if the owner cannot establish a legitimate reason (''motif légitime'') for having that knife, particularly in urban areas or at public events.<ref name="LAN">{{cite book |last=Lang |first=Oliver |date=March 2010 |title=Messer in Europa: Mit Dem Messer Auf Reisen (Übersicht - Messer & Recht im Ausland, Messer Magasin) |url=http://www.docstoc.com/docs/31834899/rev_42-47-Messer-in-Europaqxd |archive-url=https://web.archive.org/web/20141120180120/http://www.docstoc.com/docs/31834899/rev_42-47-Messer-in-Europaqxd |url-status=dead |archive-date=November 20, 2014 |language=de}}</ref><ref name="LAL">{{cite book |author=<!--Staff writer(s); no by-line.--> |date=September 1, 2008 |title=La loi sur les armes a été modifiée: quelles sont les nouveautés? |url=http://www.just.fgov.be/img_publications/pdf/166.pdf |url-status=dead |archive-url=https://web.archive.org/web/20111001011354/http://www.just.fgov.be/img_publications/pdf/166.pdf |archive-date=October 1, 2011 |access-date=August 27, 2011 |language=fr |edition=3rd |location=Bruxelles}}</ref>

===Canada===
Under Part III of the [[Criminal Code (Canada)|Criminal Code]] a knife that has a blade that opens automatically by gravity or centrifugal force or by hand pressure applied to a button, spring or other device in or attached to the handle of the knife, is illegal to possess, import, sell, buy, trade, or carry on one's person. These are prohibited weapons (''armes défendues'').<ref>Pyzer, Jonathan, [https://www.torontodefencelawyers.com/possession-prohibited-weapons-pepper-spraynunchucks-switchblades/ "Possession of Prohibited Weapons—Pepper Spray/Nunchucks/ Switchblades"], 16 January 2021, retrieved 28 March 2022:  Canada Criminal Code SOR/98-462, sections 84(1) and 94(3): "It is a criminal offence under Canadian law to possess any of the weapons listed in section s. 84(1) and the associated regulations. Possession refers to any situation where you have knowledge and control of the object. This includes owning the weapon, having it on your person, keeping it in your home, car, or storage facility, etc."</ref> While certain businesses can be granted a [[Possession and Acquisition Licence|licence]] to acquire and possess prohibited weapons such as switchblades for use as props in movie productions, these exemptions do not apply to individuals.

===Czech Republic===
It is legal to carry and possess switchblades or automatic knives in the Czech Republic.<ref>§1 zákona 119/2002 Sb., zdroj: SBÍRKA ZÁKONŮ ročník 2002, částka 52, ze dne 09.04.2002 (§1, Law No 119/2002, Collection of Laws vol.2002, sum 52, published 2002-04-09), Retrieved January 8, 2009</ref>

===Denmark===
Any type of automatic-opening knife or bladed tool that can be opened using just one hand (this includes any one-handed knife that has been deactivated by removing its opening mechanism) is illegal to own or possess.  Multi-tools featuring one-hand opening blades are also illegal to own or possess. Manually opened one-handed knives are legal.<ref name="LAN"/>

===Finland===
In Finland switchblade or automatic knives are legal to purchase or possess.<ref name="LAN"/> All knives are considered as dangerous weapons and it is forbidden to carry any knife without a proper cause.<ref>''Suomen Järjestyslaki'' Ch. 3, Sec. 9§ ''Vaaralliset Esineet'', 27 June 2003</ref> The law forbids carrying or importing any automatic knife that has the blade completely hidden like [[OTF Knife|OTF switchblades]].<ref>''Tulli, rajoituskäsikirja'' http://tulli.fi/documents/2912305/3048504/vaaralliset_esineet.pdf/a2b7b21d-ac1f-4317-b6aa-2a17d5fa91c0</ref> The restriction does not apply to importing historically significant knives or those with significant artistic value. The law requires that switchblades be cased and secured while being transported.<ref name="LAN"/>

===France===
French law defines switchblades as dangerous weapons, which may not be carried on one's person.<ref name="LAN"/> If carried in a vehicle, such knives must be placed in a secure, locked compartment not accessible to the vehicle occupants.<ref name="LAN"/> In addition, French law provides that authorities may classify any knife as a prohibited item depending upon circumstances and the discretion of the police or judicial authorities.<ref name="LAN"/>

===Germany===
The switchblade is known in Germany as the ''Springmesser'' (also called a ''Sprenger''<ref name="BE">Benson, Ragnar (1989). ''Switchblade: The Ace of Blades''. Paladin Press. pp. 1&ndash;14. {{ISBN|0-87364-500-6}}</ref> or ''Springer''<ref name="SH">Shackleford, Steve (ed.) (2009). ''Blade's Guide to Knives And Their Values''. Krause Publications. pp. 151&ndash;152 {{ISBN|978-1-4402-0387-9}}.</ref><ref>Schrade, George M. "[http://www.collectors-of-schrades-r.us/articles/george.pdf George Schrade and his accomplishments to the Knife Industry]". George Schrade Knife Co. (1982). ASIN B00072P8NU.</ref>). All large side-opening switchblade knives (blade longer than {{convert|8.5|cm|abbr=on}}), [[OTF Knife|OTF switchblades]], balisongs or butterfly knives (blade longer than {{convert|4|cm|abbr=on}}), and gravity knives are illegal to own, import or export under German law. Side-opening switchblade knives with single-edged blades not longer than {{convert|8.5|cm|abbr=on}} and incorporating a continuous [[Knife#Materials and construction|spine]] are legal to own. Legal switchblades may be carried both open and concealed on one's person if there is a justified need for it ("berechtigtes Bedürfnis") or if the weapon cannot be accessed with less than 3 moves ("Transport in verschlossenem Behältnis"). Other laws or regulations may still prohibit the carrying of otherwise legal automatic or switchblade knives, particularly in certain situations or places (gatherings on public ground, check-in areas of airports).

===Hungary===
According to [[decree]] 175/2003. (X. 28.) of the [[Hungarian government]] ''a közbiztonságra különösen veszélyes eszközökről'' (about the instruments particularly hazardous to public safety), it is prohibited to possess a switchblade in public places or private places open to the public – that includes the inside of vehicles present there – and on public transport vehicles, except for filmmaking and theatrical performances. Members of the [[Hungarian Army]], law enforcement, national security agencies and armed forces stationed in Hungary are exempt from this limitation together with those who are authorised to carry such instruments by legislation. Sale of a switchblade is authorised only to the persons and organizations above. [[Customs clearance]] of switchblades may not be performed for private individuals such as tourists.

===Hong Kong===
According to the Weapons Ordinance (Cap. 217), any person who has possession of any prohibited items (including Gravity Knife and Flick Knife) commits an offence.<ref>{{Cite Hong Kong ordinance|name=Weapons Ordinance|217|4|text=§ 4, also refer to the Schedule}}</ref>

===Ireland===
Section 9 of the Firearms and Offensive Weapons Act 1990 makes it an offence to carry a "flick knife" in any public space without lawful authority or reasonable excuse. A [[summary offence|summary conviction]] is punishable with either a €1000 fine, up to 12 months imprisonment or both but if [[Indictable offence|indictable]] the penalty can be up to five years in prison.<ref>{{cite web|url=http://www.irishstatutebook.ie/1990/en/act/pub/0012/sec0009.html|title=electronic Irish Statute Book (eISB)|first=electronic Irish Statute Book|last=(eISB)|website=www.irishstatutebook.ie}}</ref> The Act, which classifies a flick knife as an offensive weapon, also prohibits the manufacture, importation, sale, hire or loan of these knives. Conviction for any of these offences carries a sentence of up to seven years imprisonment.<ref>{{Cite web |url=http://www.justice.ie/en/JELR/Pages/Firearms_and_Ammunition_FAQ |title=The Department of Justice and Equality: FAQ |access-date=2014-02-27 |archive-date=2014-02-25 |archive-url=https://web.archive.org/web/20140225043647/http://www.justice.ie/en/JELR/Pages/Firearms_and_Ammunition_FAQ |url-status=dead }}</ref>

===Italy===
In Italy, the switchblade or automatic opening knife (''coltello a scatto'') is defined by law as an offensive weapon (''arma bianca'') rather than a tool. A firearms license (''porto d'armi'') or a police clearance (''nulla osta'') are required to legally purchase one. Such knives may not be transported outside of one's property without a valid reason (self-defense is not) and it is always illegal to carry one in a ready to use condition, neither concealed nor unconcealed.<ref>Articolo 699 ''Codice Penale'', ARMI - Porto Abusivo</ref><ref>''[http://www.avvocati.ud.it/public/rivista_on_line/art567.html Definizione Di Arma Impropria: Coltello a Scatto] {{Webarchive|url=https://web.archive.org/web/20120929000028/http://www.avvocati.ud.it/public/rivista_on_line/art567.html |date=2012-09-29 }}'', Tribunale di Gorizia, Sezione penale, 20 May 2009</ref> The Italian [[Ministry of Interior (Italy)|Ministry of Interior]] has warned that switchblade knives will be considered offensive weapons in their own right.<ref>Si segnala che con circolare ''559C.7572.10179(17) 1'' il Ministero dell'Interno ha avvertito che i coltelli a scatto sono da considerare armi proprie, con tutte le conseguenze in ordine al loro regime giuridico.</ref>

===Japan===
In Japan any switchblade over {{convert|5.6|cm|in}} in blade length requires permission from the prefectural public safety commission in order to possess at home. However, switchblades and assisted open knives are prohibited from carry under any circumstances.<ref>{{cite web|url=http://www.asiaone.com/News/Latest+News/Asia/Story/A1Story20080611-70248.html|title=Double-edged knives may be regulated by law|website=www.asiaone.com}}</ref>{{Failed verification|date=February 2022}}

===Lithuania===
According to Lithuanian law it is illegal to carry or possess a switchblade if it meets one of the following criteria: the blade is longer than {{convert|8.5|cm|abbr=on}}; the width in the middle of the blade is less than 14% of its total length; the blade is double sided.<ref>{{cite web|url=http://knives.lt/index.php|title=Apie peilininkus, peilius ir viską, kas su tuo susiję... - knives.lt|website=knives.lt}}</ref>

===Mexico===
It is legal to carry and possess switchblades in Mexico.<ref>{{cite web|url= https://homesteadauthority.com/mexico-knife-laws/|title=Mexico knife laws|website=homesteadauthority.com|date=13 March 2023 }}</ref>

===Netherlands===
As of 2012, it is prohibited to own or possess, whether kept at home or not, any stilettos, switchblades, folding knives with more than one cutting edge, and throwing knives.<ref name="LAN" />{{rp|44&ndash;46}}

===New Zealand===
The Customs Import Prohibition Order 2008 prohibits the importation of "any knife having a blade that opens automatically by hand pressure applied to a button, spring or other device in or attached to the handle of the knife (sometimes known as a 'flick-knife' or 'flick gun')".<ref>[http://www.legislation.govt.nz/regulation/public/2008/0241/latest/DLM1455710.html#DLM1455710 "Prohibited offensive weapons imports"], legislation.govt.nz</ref> The Summary Offences Act 1981<ref>[http://www.legislation.govt.nz/act/public/1981/0113/latest/whole.html#DLM53545 "Summary Offences Act 1981"], legislation.govt.nz</ref> and the Crimes Act 1961 section 202A(4)(a) make it an offence to possess any weapon in a public place without reasonable excuse.

===Norway===
Switchblades or automatic knives (''springkniver'') may not be acquired, possessed, or carried in Norway "without justifiable purpose" and also assuming they "appear as products of violence".<ref name="LAN"/><ref>{{cite web|url=http://lovdata.no/for/sf/jd/td-20090625-0904-004.html#9|title="Forskrift om skytevåpen, våpendeler og ammunisjon mv. (våpenforskriften) - Kapittel 2. Forbudte våpen og ammunisjon"}}</ref>

===Poland===
Knives, including switchblades, although regarded as dangerous tools, are not considered weapons under Polish law,<ref>[http://isip.sejm.gov.pl/DetailsServlet?id=WDU19990530549 Act of 21 May 1999 on weapons and ammunition] {{Webarchive|url=https://web.archive.org/web/20110807130602/http://isip.sejm.gov.pl/DetailsServlet?id=WDU19990530549 |date=7 August 2011 }} (Dz.U. 1999 nr 53 poz. 549)</ref> except for blades hidden in umbrellas, canes, etc. It is legal to sell, buy, trade and possess a switchblade, and Polish law does not prohibit carrying a knife in a public place. However, certain prohibitions may apply during mass events.<ref>[http://isip.sejm.gov.pl/DetailsServlet?id=WDU20090620504 Act of 20 March 2009 on the safety of the mass events] {{Webarchive|url=https://web.archive.org/web/20110807130625/http://isip.sejm.gov.pl/DetailsServlet?id=WDU20090620504 |date=7 August 2011 }} (Dz.U. 2009 nr 62 poz. 504)</ref>

===Russia===
In Russia, switchblades ([[Russian language|rus.]] ''автоматический нож'', ''выкидной нож'', ''пружинный нож'') are illegal only if their blade's length is more than {{convert|9|cm|in|abbr=on}} – this is an [[Crime|illegal]] weapon, and there is a [[fine (penalty)|fine]] 500–2000 Russian [[ruble]]s (about $8–30) and [[confiscation|withdrawing]] of the knife only for carrying it (article 20.8 of [[Offences Code of Russia]]), but not for illegal purchasing and possession (keeping at home or somewhere else). Only self-making and selling white arms (rus. ''холодное оружие'') is a [[crime]] in Russia (these two crimes are punished by: part 4 article 222 and part 4 article 223 of [[Russian Criminal Code]]). If the blade is shorter than 9 centimetres, anyone (even if people younger than 18 years old, having a [[criminal history]] or [[mental illness]]) can buy, own and [[concealed carry]] ([[open carry]] of any weapon or things that look like weapon at [[human settlement]]s is forbidden in Russia; with the exception for [[policeman|policemen]]) such a switchblade without any [[license]]. But even in this case, it is recommended that people carry on their person an official certificate ([[type approval]]) (which is usually in a box with a purchased knife), which proves that it is not a melee weapon and not restricted to carry, in which case even knives longer than 9&nbsp;cm are sometimes approved.<ref>{{cite web|url=http://zakonprost.ru/zakony/ob-oruzhii/statja-6/|title=Статья 6 ограничения устанавливаемые на оборот гражданского и служебного оружия федеральный закон об оружии n 150-ФЗ (скачать) (2017). Актуально в 2017 году - ЗаконПрост!|website=zakonprost.ru}}</ref><ref>[[:ru:Холодное оружие#Ограничения гражданского оборота холодного оружия]]</ref><ref>{{cite web|url=http://www.consultant.ru/popular/ukrf/10_34.html#p3956|title="Уголовный кодекс Российской Федерации" от 13.06.1996 N 63-ФЗ (ред. от 29.07.2017) (с изм. и доп., вступ. в силу с 26.08.2017) / КонсультантПлюс|website=www.consultant.ru}}</ref><ref>{{cite web|url=http://www.consultant.ru/popular/koap/13_21.html#p7427|title="Кодекс Российской Федерации об административных правонарушениях" от 30.12.2001 N 195-ФЗ (ред. от 29.07.2017) (с изм. и доп., вступ. в силу с 10.08.2017) / КонсультантПлюс|website=www.consultant.ru}}</ref>

===Singapore===
The importation and possession of switchblades are illegal in Singapore. It may not be also listed or sold in auctions in Singapore.<ref>{{cite web|url=https://www.ica.gov.sg/enteranddeparting/before/enteranddeparting_prohibitedcontrolleditems |title=Prohibited Goods and Controlled Goods|work=ICA}}</ref>

===Slovenia===
Switchblades are specifically prohibited under Slovenian law.<ref name="LAN"/>

===Slovakia===
It is legal to carry and possess switchblade or automatic knives with no restriction to the length of the blade.<ref>[[Knife legislation]]</ref>

===South Africa===
In South Africa, little to no laws exist on the possession, sale, manufacture, and carrying of weapons, other than firearms. Switchblades are legal for possession, sale, manufacture, and carrying.{{Citation needed|date=January 2016}}

===South Korea===
In South Korea, any knife that automatically opens wider than 45 degrees with the push of a button and has a blade that is longer than {{convert|5.5|cm|abbr=on}} is subject to registration. In order to register the knife and legally possess it, one must be older than 20, have no previous criminal offences and be healthy both physically and psychologically. The registration process is carried out at nearby police stations. However, unless the owner of the knife has a hunting license, carrying the knife in public is generally prohibited.

===Spain===
Manufacture, importation, trade, use and possession of switchblade knives are prohibited in Spain.<ref>{{cite web|url=http://www.guardiacivil.es/es/servicios/armasyexplosivo/controldearmas/clasifica_armas/armas_prohibidas/index.html|title=Armas prohibidas|publisher=www.guardiacivil.es|access-date=October 12, 2016|quote=[[Swordstick|Bastones-estoque]], los [[Poignard|puñales]] de cualquier clase y las '''navajas llamadas automáticas'''. Se considerarán puñales a estos efectos las armas blancas de hoja menor de 11 centímetros, de dos filos y puntiaguda}}</ref>

===Sweden===
In Sweden, the possession of any knife in a public place, at school, or public roads is prohibited.<ref name="LAN"/> Exceptions are made for those who carry knives for professional or otherwise justified reasons. Switchblades may not be possessed by individuals under 21 years of age.<ref>Svensk Lag (1988:254) ''Om förbud Beträffande Knivar och andra Farliga Föremål'', Justitiedepartementet L4, 5 May 1988</ref>

===Switzerland===
Knives whose blade can be opened with an automatic mechanism that can be operated with one hand are illegal to acquire (except with a special permit) in Switzerland under the Federal Weapons Act.<ref>{{cite swiss law | sr = 514.54 | link = 514.54 | art = 4 | date = 20 June 1997 (as amended) | en = | enab = | de = Bundesgesetz über Waffen, Waffenzubehör und Munition | deab = Waffengesetz, WG | fr = Loi fédérale sur les armes, les accessoires d’armes et les munitions | frab = Loi sur les armes, LArm | it = |es = | esab = | itab = }} par. 1 litt. c in conjunction with art. 5 par. 1 litt. c.</ref> [[Butterfly knife|Butterfly knives]], [[throwing knife|throwing knives]] and [[push dagger|daggers]] with a symmetrical blade are banned likewise. Violations are punishable with imprisonment of up to three years or a fiscal penalty, as provided for by article 33 of the same act.

===Turkey===
Switchblades are illegal to buy, sell and carry in [[Turkey]] per the corresponding law 6136 (4) which includes an incarceration sentence of up to 1 year. However, due to the widespread use of switchblades and [[butterfly knife|butterfly knives]] in the country, imprisoning is very rare and sentences are often converted to a fine when it is the only violation.

===Ukraine===
Under Article 263 of the Criminal Code, switchblades are not specifically prohibited; however, any knife definable as a 'dagger' may not be manufactured, sold, repaired for sale, nor carried on one's person without a valid permit.<ref>[https://www.legislationline.org/documents/action/popup/id/16257/preview Article 263, Criminal Code of Ukraine]</ref>

===United Kingdom===
On 12 May 1958, Parliament passed the Restriction of Offensive Weapons Act 1959,<ref name="ROOWA">[http://yourdemocracy.newstatesman.com/parliament/restriction-of-offensive-weapons-bill/HAN8897315 Restriction of Offensive Weapons Bill] {{Webarchive|url=https://web.archive.org/web/20120402123630/http://yourdemocracy.newstatesman.com/parliament/restriction-of-offensive-weapons-bill/HAN8897315 |date=2012-04-02 }}, New Statesman, retrieved 29 October 2011</ref> which banned the manufacture, sale or offer to sell or hire any type of automatic-opening or switchblade knife. The law came in response to their perceived use by juvenile delinquents and gangs and associated media coverage, as well as by the 1958 passage of the Switchblade Knife Act in the United States. Indeed, much of the language in the Restriction of Offensive Weapons Act 1959 appears to be taken directly from the American law.

In 2019, parliamentary amendments to Section 43, 44, and 46 of The Restriction of Offensive Weapons Act 1959 make it illegal to own, possess, sell or transfer a switchblade or flick knife within the United Kingdom, including possession at home.<ref>''Offensive Weapons, Knife Crime Practical Guidance'', 10 September 2020 [https://www.cps.gov.uk/legal-guidance/offensive-weapons-knife-crime-practical-guidance]</ref><ref name="ROOWA"/> According to UK government websites, assisted-opening knives are included in the amended and expanded definition of a prohibited 'flick knife'.<ref>''Offensive Weapons Act 2019'', Part 4, Section 43-46, Legislation.gov.uk, retrieved 28 March 2022 [https://www.legislation.gov.uk/ukpga/2019/17/part/4]</ref><ref>''Selling, Buying, and Carrying Knives'', Crime, justice & the law, GOV.UK [https://www.gov.uk/buying-carrying-knives], retrieved 28 March 2022: See Banned Weapons/Flick Knife: "Also known as ‘switchblades’ or ‘automatic knives’. Folding knives where the blade opens automatically, by gravity ''or by pressing a button or something else on the knife''".</ref>

===United States===
{{Main|Knife legislation#United States}}

==== Federal law ====
The ''Switchblade Knife Act'' ({{USPL|85|623}}, {{USStat|72|562}}, aka ''SWA'', enacted on August 12, 1958, and codified in {{USC|15|1241|1245}}) prohibits the manufacture, importation, distribution, transportation, and sale of switchblade knives in commercial transactions [[Commerce Clause|substantially affecting interstate commerce]]<ref>In ''Gibbons v. Ogden'', the U.S. Supreme Court first established the principle that Congress may regulate under the [[Commerce Clause]] of the Constitution only those activities within a state that arise out of or are connected with a commercial transaction, which viewed in the aggregate, substantially affect interstate commerce.</ref> between any state, territory, possession of the United States, or the District of Columbia, and any place outside that state, territory, U.S. possession, or the District of Columbia. The Act also prohibits possession of such knives on federal or Indian lands or on lands subject to federal jurisdiction. The federal SWA does ''not'' prohibit the ownership or carrying of automatic knives or switchblades inside state lines while not on federal property, nor does it prohibit the acquisition or disposition of such knives in  an intrastate (in-state) transaction.  Finally, the law does not prohibit interstate knife sales or transactions that are either noncommercial in nature, or which do not substantially affect interstate commerce (as defined by recent decisions of the U.S. Supreme Court).

U.S. Code Title 15, Sect. 1241 defines switchblade knives as any knives which open "1) by hand pressure applied to a button or other device in the handle of the knife, or any knife having a blade which opens automatically; (2) by operation of inertia, gravity, or both". The Act also prohibits the manufacture, sale, or possession of switchblade knives on any Federal lands, Native American reservations, military bases, and Federal maritime or territorial jurisdictions including the District of Columbia, Puerto Rico, and other territories.<ref name="Walker">Walker, Greg (1993). ''Battle Blades: A Professional's Guide to Combat/Fighting Knives'' (Hardcover), pages 210 {{ISBN|0-87364-732-7}}</ref><ref>Title 15, Ch. 29, § 1241 United States Code (Definitions): The term “interstate commerce” means commerce between any State, Territory, possession of the United States, or the District of Columbia, and any place outside thereof.</ref> The act was amended in 1986 to also prohibit the importation, sale, manufacture, or possession of [[Ballistic knife|ballistic knives]] in interstate commerce.

U.S.C. 1716 prohibits the mailing or transport of switchblades or automatic knives through the U.S. mails ([[U.S. Postal Service]]), with a few designated exceptions.<ref name="Walker"/> The act provides for a fine and/or imprisonment of not more than one year.<ref name="Walker"/> {{USC|18|1716(g)(2)}} provides:

{{blockquote|{{ordered list|start=7|list_style_type=lower-alpha
| All knives having a blade which opens automatically (1) by hand pressure applied to a button or other device in the handle of the knife, or (2) by operation of inertia, gravity, or both, are nonmailable and shall not be deposited in or carried by the mails or delivered by any officer or employee of the Postal Service. Such knives may be conveyed in the mails, under such regulations as the Postal Service shall prescribe —{{ordered list|
| to civilian or Armed Forces supply or procurement officers and employees of the Federal Government ordering, procuring, or purchasing such knives in connection with the activities of the Federal Government;
| to supply or procurement officers of the National Guard, the Air National guard, or militia of a state, territory or the District of Columbia ordering, procuring, or purchasing such knives in the connection with the activities of such organization;
| to supply or procurement officers or employees of the municipal government of the District of Columbia or the government of any State or Territory, or any county, city or other political subdivision of a State or Territory; procuring or purchasing such knives in connection with the activities of such government.
| to manufacturers of such knives or bona fide dealers therein in connection with any shipment made pursuant of an order from any person designated in paragraphs (1), (2), and (3).}}}}}}

{{USC|15|1244}} provides that the federal ''Switchblade Knife Act'' does '''not''' apply to: 1) any common carrier or contract carrier, with respect to any switchblade knife shipped, transported, or delivered for shipment in interstate commerce in the ordinary course of business; 2) the manufacture, sale, transportation, distribution, possession, or introduction into interstate commerce of switchblade knives pursuant to contract with the Armed Forces; 3) to the Armed Forces or any member or employee thereof acting in the performance of his duty; 4) the possession and transportation upon his person of any switchblade knife with a blade {{convert|3|in|cm|abbr=on}} or less in length by any individual who has only one arm, and 5) a knife "that contains a spring, detent, or other mechanism designed to create a bias toward closure of the blade and that requires exertion applied to the blade by hand, wrist, or arm to overcome the bias toward closure to assist in opening the knife".<ref name="Walker"/>

====State laws====
In addition to federal law, some U.S. states have laws restricting or prohibiting automatic knives or switchblades, sometimes as part of a catchall category of ''deadly weapons'' or ''prohibited weapons''. A few states, among them Delaware, Hawaii, New Jersey, New Mexico, and New York, prohibit sale, transfer, ownership or possession of automatic knives or switchblades as deadly or prohibited weapons, while others such as New Hampshire and Arizona have no restrictions on sale, ownership, possession, or carry (with some location-specific exceptions). Other states allow purchase, possession, and carrying on one's person to a limited degree, sometimes with restrictions on blade length or location.

The negative public reputation of the switchblade as the tool of the juvenile delinquent, derived from sensational media coverage of the 1950s, was enshrined in many states' criminal codes, and some of these laws persist to this day.  Thus in some states, the possession or carrying of an automatic-opening knife or switchblade may become illegal based solely on its design or aesthetic appearance, or simply its use as a weapon in a given circumstance.<ref name="ReferenceC">New Jersey Code of Criminal Justice – 2C:39-3e, 39-3g(2), 39-5</ref><ref name="See 2017">See ''State of New Jersey v. Montalvo'', 162 A.3d 270 (2017)</ref><ref name="akti.org">American Knife & Tool Institute, ''New Jersey Knife Laws At A Glance'', akti.org, retrieved 22 March 2022 [https://www.akti.org/state-knife-laws/new-jersey]</ref>  For example, switchblade knives with blade shapes originally designed for the purpose of stabbing or thrusting, such as the [[dirk]], [[dagger]], [[poignard]], or stiletto are automatically considered to be 'deadly weapons' (i.e. knives designed or specially adapted for use as a weapon to inflict death or serious bodily injury).<ref name="ReferenceD">American Knife & Tool Institute, ''California Knife Laws At A Glance'', akti.org, retrieved 22 March 2022 [https://www.akti.org/state-knife-laws/california]</ref>

Over the years, state judicial decisions have expanded the original reach  of switchblade laws, either by reclassifying single-edged automatic pocket knives with short, general-purpose blades as illegal 'dirks or daggers', or by re-defining otherwise legal manually operated lock-blade pocket knives as a prohibited gravity knife, flick knife, or switchblade.<ref name="ReferenceD"/><ref>''People v. Hester'', 58 Cal.App.5th 630 (2020): In People v. Hester, a state appeals court went so far as to define an ordinary ''[[boxcutter]]'' utility knife with an exposed blade length of less than {{convert|1|in|cm|abbr=on}} as a 'dirk or dagger' under the California Penal Code</ref><ref>KnifeRights.org, ''UPDATE: Motion for Reargument in NY Assisted-Opener = Switchblade Case Denied'', October 28, 2018 retrieved 22 March 2022 [https://kniferights.org/legislative-update/motion-for-reargument-filed-in-ny-assisted-opener-case-knife-rights-helps-defendant-who-had-ineffective-counsel/motion-for-reargument-in-ny-assisted-opener-switchblade-case-denied]</ref>  Persons who used knives deemed prohibited as in their work or for self-defense, or who could not afford adequate legal representation, particularly racial minorities, have been disproportionately affected by the capricious enforcement of such laws.<ref>Comstock, Paul, ''Knife laws: Companion bills Seek State Preemption of Municipal Ordinances'', The Columbus Dispatch, 26 April 2021 [https://www.dispatch.com/story/news/local/2021/04/26/knife-laws-companion-bills-seek-state-preemption-municipal-ordinances/7390605002] retrieved 22 March 2022</ref>

In response to complaints raised about the constitutionality and inconsistent application of existing statutes to modern knife designs, several states such as Alaska, Arkansas, Indiana, Kansas, Michigan, Missouri, Montana, Tennessee, Texas, Virginia, West Virginia, and Wisconsin have repealed older laws against possession or purchase of switchblade or automatic knives. Five states still prohibit anyone from selling, purchasing, owning or carrying a switchblade.

In August 2024, the [[Massachusetts Supreme Judicial Court]] relied on the 2022 U.S. Supreme Court decision ''[[New York State Rifle & Pistol Association, Inc. v. Bruen]]'' when it struck down a 1957 ban on switchblade knives in the state, on the grounds there were no similar bans at the time of the writing of the Second and Fourteenth Amendments.<ref name="Ellement">{{cite news |url=https://www.bostonglobe.com/2024/08/27/metro/sjc-rules-switchblade-knife-possession-not-a-crime/ |newspaper=[[The Boston Globe]] |title=Mass. high court rules possessing a switchblade knife is no longer a crime under the Second Amendment |author=John R. Ellement |date=August 27, 2024}}</ref> This may mean other switchblade laws at the federal and state level will be ruled unconstitutional.

{| class="wikitable" style="text-align:left"
|+U.S. state laws regarding possession, concealed and non-concealed carry by adult age 21 or older
|-
! State !! Possession/Display/Purchase/Sale !! Carry in Public (on Person)
|-
! Alabama
| '''Legal''' – [https://archive.today/20121225074317/http://alisondb.legislature.state.al.us/acas/CodeOfAlabama/1975/148207.htm ''State Code: Section 13A-11''] || '''Legal''' – Only Bowie knives or knives of "like kind or description" are restricted from carry in a vehicle or concealed about the person.<ref>{{cite web |title=Carrying concealed weapons. |at=Section 13A-11-50 |work=Code of Alabama 1975 |url=http://alisondb.legislature.state.al.us/acas/CodeOfAlabama/1975/13A-11-50.htm |author=Alabama State Legislature |access-date=2012-02-27 |archive-date=2012-08-21 |archive-url=https://web.archive.org/web/20120821013608/http://alisondb.legislature.state.al.us/acas/CodeOfAlabama/1975/13A-11-50.htm |url-status=dead }}</ref> or outside of one's own property without good reason.<ref>{{cite web |title=Indictment for carrying weapons unlawfully; proof. |at=Section 13A-11-55 |work=Code of Alabama 1975 |url=http://alisondb.legislature.state.al.us/acas/CodeOfAlabama/1975/13A-11-55.htm |author=Alabama State Legislature |access-date=2012-02-27 |archive-date=2012-08-22 |archive-url=https://web.archive.org/web/20120822034445/http://alisondb.legislature.state.al.us/acas/CodeOfAlabama/1975/13A-11-55.htm |url-status=dead }}</ref>
|-
! Alaska
| '''Legal''' – became legal on September 16, 2013 – [http://weaponlaws.wikidot.com/us-switchblade-laws]|| '''Legal''' – became legal on September 16, 2013 -[http://weaponlaws.wikidot.com/us-switchblade-laws]
|-
! Arizona
| '''Legal''' – [http://www.azleg.gov/legtext/49leg/2r/bills/sb1108s.pdf ''S.B. 1108 Changes to Arizona Code: 13-3102, 13-3105, and 13-3112''] || '''Legal''' – [http://www.azleg.gov/legtext/49leg/2r/bills/sb1108s.pdf ''S.B. 1108 Changes to Arizona Code: 13-3102, 13-3105, and 13-3112'']. Knives prohibited in certain locations (schools, airports, hydroelectric facilities, nuclear facilities, polling places, and on the grounds of organized public events and gatherings. Persons under 21 may not carry a switchblade definable as a deadly weapon concealed on their person<ref>In 2010, Arizona law was changed to allow concealed carry of a knife such as a switchblade that '''might''' be defined by an Arizona court as a ''deadly weapon'' as long as the person is over 21 years of age; discloses the fact to a law enforcement officer upon questioning; is not carrying the deadly weapon in furtherance of a serious offense or felony, is not a prohibited possessor, is not carrying the deadly weapon in a listed prohibited area (schools, airports, power plants, polling places, etc.) or in furtherance of a terrorist act; is not carrying the deadly weapon into a public establishment or public event that bans carrying of a deadly weapon; and is not knowingly carrying a defaced deadly weapon.</ref>
|-
! Arkansas
| '''Legal''' – [http://www.arkleg.state.ar.us/bureau/Publications/Arkansas%20Code/Title%205.pdf ''State Code: 5-73-120''] || '''Legal''' – Legal to carry concealed on one's person or in a vehicle in most circumstances unless with intent to harm.<ref>Illegal to possess on one's person or in a vehicle or otherwise readily available a switchblade (or any knife) with a blade length exceeding {{convert|3|in|cm|abbr=on}} capable of causing serious bodily injury by cutting or stabbing with a purpose to attempt to unlawfully employ the knife against a person. AR Code § 5-73-120 (2014)</ref><ref>{{Cite web|url=https://law.justia.com/codes/arkansas/2014/title-5/subtitle-6/chapter-73/subchapter-1/section-5-73-120|title = 2014 Arkansas Code :: Title 5 - Criminal Offenses :: Subtitle 6 - Offenses Against Public Health, Safety, or Welfare :: Chapter 73 - Weapons :: Subchapter 1 - Possession and Use Generally :: § 5-73-120 - Carrying a weapon}}</ref>
|-
! California
| '''Limited''' – Illegal to sell, transfer or manufacture, may possess at home only. [https://www.shouselaw.com/possession-switchblade.html ''State Code: California Penal Code 17235 and Penal Code 21510'']<ref>Note: Many California city criminal codes, such as Oakland, are more restrictive and prohibit possession or carry of all switchblades regardless of blade length.  See OMC 9-36.040</ref>|| '''Limited''' – Illegal to carry openly or concealed on one's person, or in a motor vehicle stationed in a public place or in a place open to public unless blade is under {{convert|2|in|cm|abbr=on}}<ref>CA Penal Code 653 ''[http://www.oclaw.org/research/code/ca/PEN/653k./content.html#.XLUNtYmpHZ4 Cal. Penal Code §653k]''</ref> Note: some city criminal codes, such as Oakland, are more restrictive and prohibit all switchblades regardless of blade length. See OMC 9-36.040 
|-
! Colorado
| '''Legal*''' – Changed by [https://leg.colorado.gov/bills/sb17-008 ''SB17-008''] (effective in August 2017); *However, the cities of Denver, Aurora, Boulder, Colorado Springs and Lakewood still ban the sale, display, possession or carrying of switchblades and [[Gravity knife|gravity knives]].<ref>REVISED Municipal Code Code, City and County of Denver, Colorado Codified through Ordinance No. 0002-22, adopted January 18, 2022. (Supp. No. 143, Update 2), Ch. 38 Art. IV, Div. 2, §38-119: ''It shall be unlawful for any person to sell, display, use, possess, carry or transport any knife or instrument having the appearance of a pocket knife, the blade of which can be opened by a flick of a button, pressure on the handle, or other mechanical contrivance.''</ref><ref>Simmons, Tommy, ''[https://www.greeleytribune.com/news/crime/heres-what-you-should-know-about-colorados-new-switchblade-law Here's What You Should Know About Colorado's New Switchblade Law]'', The Greeley Tribune, 2 November 2017: The cities of Denver, Aurora, Boulder, Colorado Springs and Lakewood all have switchblade ordinances.</ref>
|| '''Limited''' – Open carry legal, except in Denver, Aurora, Boulder, Colorado Springs and Lakewood. Illegal to carry any knife concealed (including switchblade) having a blade length over {{convert|3.5|in|cm|abbr=on}}. 
|-
! Connecticut
| '''Legal''' – [http://pweb.netcom.com/%7Ebrlevine/ct.txt ''State Code: Sec. 53-206''] {{Webarchive|url=https://web.archive.org/web/20080513083231/http://pweb.netcom.com/~brlevine/ct.txt |date=2008-05-13 }} || '''Limited''' – Possession in vehicle prohibited; Illegal '''unless''' carried by person with a valid hunting, fishing, or trapping license while actively hunting, fishing or trapping; when moving one's possessions; when being transported for repair; when being used in an authorized historic reenactment; or if the blade of the switchblade is under {{convert|1.5|in|cm|abbr=on}} – [http://www.cga.ct.gov/2005/rpt/2005-R-0198.htm ''Knives Defined As Dangerous Weapons'']
|-
! Delaware
| '''Illegal''' – [http://delcode.delaware.gov/title11/c005/sc07/index.shtml#1446 ''State Code: Crimes & Criminal Procedure – Chapter 11 Section 1446''] || '''Illegal''' – [http://delcode.delaware.gov/title11/c005/sc07/index.shtml#1446 ''State Code: Chapter 11 Section 1446'']
|-
!District of Columbia
|'''Illegal''' – [https://code.dccouncil.us/us/dc/council/code/sections/22-4514.html § 22–4514]
|'''Illegal''' – [https://code.dccouncil.us/us/dc/council/code/sections/22-4504.html § 22-4504]
|-
! Florida
| '''Legal''' – [http://pweb.netcom.com/%7Ebrlevine/fl.txt ''State Code: 790.001''] {{Webarchive|url=https://web.archive.org/web/20080513083308/http://pweb.netcom.com/~brlevine/fl.txt |date=2008-05-13 }}|| '''Legal''' – [http://pweb.netcom.com/%7Ebrlevine/fl.txt ''State Code: 790.001''] {{Webarchive|url=https://web.archive.org/web/20080513083308/http://pweb.netcom.com/~brlevine/fl.txt |date=2008-05-13 }}
|-
! Georgia
| '''Legal''' – [http://www.knifeup.com/georgia-knife-laws/''O.C.G.A. § 16-11-126'']|| '''Limited''' – legal if carried openly and legal if carried concealed when blade is less than {{convert|5|in|cm|abbr=on}}. Concealed carry of a blade greater than {{convert|5|in|cm|abbr=on}} requires a "Weapons Carry License" [http://www.knifeup.com/georgia-knife-laws/''O.C.G.A. § 16-11-126'']
|-
! Hawaii
| '''legal''' – [https://www.capitol.hawaii.gov/hrscurrent/Vol03_Ch0121-0200D/HRS0134/HRS_0134-0052.htm ''State Code: §134-52'']|| '''legal''' – [http://pweb.netcom.com/%7Ebrlevine/hi.txt ''State Code: §134-51''] {{Webarchive|url=https://web.archive.org/web/20080513083204/http://pweb.netcom.com/~brlevine/hi.txt |date=2008-05-13 }}
|-
! Idaho
| '''Legal''' – [http://pweb.netcom.com/%7Ebrlevine/id.txt''State Code: 18-3302''] {{Webarchive|url=https://web.archive.org/web/20080513083050/http://pweb.netcom.com/~brlevine/id.txt |date=2008-05-13 }}|| '''Limited''' – Concealed carry allowed if not otherwise prohibited by local ordinance, but prohibited if possessor is intoxicated, exhibits an 'intent to assault another', or exhibits any deadly or dangerous weapon in a rude, angry or threatening manner – [http://pweb.netcom.com/%7Ebrlevine/id.txt ''State Code: 18-3302''] {{Webarchive|url=https://web.archive.org/web/20080513083050/http://pweb.netcom.com/~brlevine/id.txt |date=2008-05-13 }}
|-
! Illinois
| '''Limited''' – Allowed with valid Firearm Owner's Identification Card. -[http://www.ilga.gov/legislation/publicacts/fulltext.asp?Name=100-0082 ''State Code:720 ILCS 5/24-1''] || '''Limited''' – Allowed with valid Firearm Owner's Identification Card. -[http://www.ilga.gov/legislation/publicacts/fulltext.asp?Name=100-0082 ''State Code:720 ILCS 5/24-1'']
|-
! Indiana
| '''Legal (except on school property)''' – [http://iga.in.gov/legislative/laws/2020/ic/titles/035#35-47-5''State Code: IC 35-47-5'']|| '''Legal (except on school property)''' – [http://iga.in.gov/legislative/laws/2020/ic/titles/035#35-47-5]
|-
! Iowa
| '''Legal''' – [http://pweb.netcom.com/%7Ebrlevine/ia.txt ''State Code: Crime Control and Criminal Acts – Definitions. 702.7''] {{Webarchive|url=https://web.archive.org/web/20080509060905/http://pweb.netcom.com/~brlevine/ia.txt |date=2008-05-09 }}|| '''Limited''' – illegal if carried concealed without "Iowa Permit to Carry Weapons", legal to carry openly – [http://www.dps.state.ia.us/asd/weapons/SF2379_FAQ.pdf ''Iowa Department of Public Safety SF2379 Frequently Asked Questions''] – [http://pweb.netcom.com/%7Ebrlevine/ia.txt ''State Code: 724.4''] {{Webarchive|url=https://web.archive.org/web/20080509060905/http://pweb.netcom.com/~brlevine/ia.txt |date=2008-05-09 }}
|-
! Kansas
| '''Legal''' – ''[http://www.kslegislature.org/li/b2013_14/measures/documents/hb2033_enrolled.pdf Session of 2013 amending K.S.A. 2012 Supp. 21-6301]'' || '''Legal''' – ''[http://www.kslegislature.org/li/b2013_14/measures/documents/hb2033_enrolled.pdf Session of 2013 amending K.S.A. 2012 Supp. 21-6302]''
|-
! Kentucky
| '''Legal''' – [http://pweb.netcom.com/%7Ebrlevine/ky.txt ''State Code: 500.080 Definitions for Kentucky Penal Code''] {{Webarchive|url=https://web.archive.org/web/20080513083151/http://pweb.netcom.com/~brlevine/ky.txt |date=2008-05-13 }}[http://pweb.netcom.com/%7Ebrlevine/ky.txt ''State Code: 527.020''] {{Webarchive|url=https://web.archive.org/web/20080513083151/http://pweb.netcom.com/~brlevine/ky.txt |date=2008-05-13 }} || '''Limited''' – concealed carry, even on one's own property, allowed only with "concealed deadly weapons permit" – [http://pweb.netcom.com/%7Ebrlevine/ky.txt ''State Code: 527.020''] {{Webarchive|url=https://web.archive.org/web/20080513083151/http://pweb.netcom.com/~brlevine/ky.txt |date=2008-05-13 }}
|-
! Louisiana
| '''Legal''' – [http://legis.la.gov/Legis/Law.aspx?d=78739 Became Legal on August 1, 2018]||'''Illegal-''' illegal to intentionally conceal a switchblade on  one's person. ''[http://legis.la.gov/Legis/Law.aspx?d=78739 R.S. 14:95]''
|-
! Maine
| '''Legal''' – No restrictions 
|-
! Maryland
| '''Legal''' – [http://pweb.netcom.com/%7Ebrlevine/md.txt ''State Code:§ 4-105''] {{Webarchive|url=https://web.archive.org/web/20080509184417/http://pweb.netcom.com/~brlevine/md.txt |date=2008-05-09 }} || '''Limited''' – legal to carry openly; illegal if carried concealed unless holder has a license to carry a handgun [http://pweb.netcom.com/%7Ebrlevine/md.txt ''State Code: § 4-101 (a).(5).(ii)'' – definition ''§ 4-101 (c).(1-2)''] {{Webarchive|url=https://web.archive.org/web/20080509184417/http://pweb.netcom.com/~brlevine/md.txt |date=2008-05-09 }}
|-
! Massachusetts
| '''Legal''' – [http://www.mass.gov/legis/laws/mgl/269-10.htm Mass. Gen. Law Ch. 269 § 10] {{Webarchive|url=https://web.archive.org/web/20080809080932/http://www.mass.gov/legis/laws/mgl/269-10.htm |date=2008-08-09 }}
| '''Legal''' under 2024 MSJC ruling; before that, legal if length of blade does not exceed 1.5", illegal otherwise – [http://www.mass.gov/legis/laws/mgl/269-10.htm Mass. Gen. Law Ch. 269 § 10] {{Webarchive|url=https://web.archive.org/web/20080809080932/http://www.mass.gov/legis/laws/mgl/269-10.htm |date=2008-08-09 }}
|-
! Michigan
| '''Legal''' – [http://pweb.netcom.com/%7Ebrlevine/mi.txt ''State Code: 750.226a.''] {{Webarchive|url=https://web.archive.org/web/20080509185407/http://pweb.netcom.com/~brlevine/mi.txt |date=2008-05-09 }} || '''Legal''' – [http://pweb.netcom.com/%7Ebrlevine/mi.txt ''State Code: 750.226a. repealed under Michigan Switchblade Ban Repeal bill, SB 245 went into effect 90 days after signing on October 10, 2017''] {{Webarchive|url=https://web.archive.org/web/20080509185407/http://pweb.netcom.com/~brlevine/mi.txt |date=May 9, 2008 }}
|-
! Minnesota
| '''Limited''' – Illegal unless allowed under exceptions made for collectors and/or possession as curios or antiques – [http://pweb.netcom.com/%7Ebrlevine/mn.txt ''State Code: Section 609.66 Subdivision 1''] {{Webarchive|url=https://web.archive.org/web/20080513083330/http://pweb.netcom.com/~brlevine/mn.txt |date=2008-05-13 }}[https://www.revisor.mn.gov/statutes/?id=609.02 ''State Code: Section 609.02 Subdivision 6'']
|| '''Illegal''' – [http://pweb.netcom.com/%7Ebrlevine/mn.txt ''State Code: Section 609.66 Subdivision 1''] {{Webarchive|url=https://web.archive.org/web/20080513083330/http://pweb.netcom.com/~brlevine/mn.txt |date=2008-05-13 }}[https://www.revisor.mn.gov/statutes/?id=609.02 ''State Code: Section 609.02 Subdivision 6'']
|-
! Mississippi
| '''Legal''' – [http://pweb.netcom.com/%7Ebrlevine/ms.txt ''State Code: Crimes Section § 97-37-1''] {{Webarchive|url=https://web.archive.org/web/20080513083711/http://pweb.netcom.com/~brlevine/ms.txt |date=2008-05-13 }} || '''Limited''' – Illegal if carried concealed or when intoxicated – [http://pweb.netcom.com/%7Ebrlevine/ms.txt ''State Code: Crimes Section § 97-37-1''] {{Webarchive|url=https://web.archive.org/web/20080513083711/http://pweb.netcom.com/~brlevine/ms.txt |date=2008-05-13 }}
|-
! Missouri
| '''Legal''' – [http://www.senate.mo.gov/12info/pdf-bill/tat/SB489.pdf ''Senate Bill 489 (2012), signed by Governor on 10 July 2012 with emergency clause.''] || '''Legal''' – as long as possession is not against federal law – [http://www.senate.mo.gov/12info/pdf-bill/tat/SB489.pdf ''Senate Bill 489 (2012), signed by Governor on 10 July 2012 with emergency clause.'']
|-
! Montana
| '''Legal''' – [https://leg.mt.gov/bills/2019/billhtml/HB0155.htm ''State Code: HB 155 repeal of Section 45-8-331''] || '''Legal''' –[https://leg.mt.gov/bills/2017/billhtml/HB0251.htm  ''State Code HB 251 amendment of Section 45-8-315'']
|-
! Nebraska
| '''Legal''' – [http://pweb.netcom.com/%7Ebrlevine/ne.txt ''State Code: Crimes and Punishments. 28-1201''] {{Webarchive|url=https://web.archive.org/web/20080509184732/http://pweb.netcom.com/~brlevine/ne.txt |date=2008-05-09 }} || '''Limited''' – Illegal if carried concealed – [http://pweb.netcom.com/%7Ebrlevine/ne.txt ''State Code: Crimes and Punishments. 28-1201''] {{Webarchive|url=https://web.archive.org/web/20080509184732/http://pweb.netcom.com/~brlevine/ne.txt |date=2008-05-09 }}
|-
! Nevada
| '''Legal''' – [http://www.leg.state.nv.us/NRs/NRS-202.html#NRS202Sec355 ''State Code: NRS 202.355'']|| '''Legal''' – Nevada Knife Law Reform Bill, SB 176 (effective July 1, 2015) – [http://www.leg.state.nv.us/NRs/NRS-202.html#NRS202Sec350 ''State Code: NRS 202.350 paragraph 8(h)''], [http://www.leg.state.nv.us/NRs/NRS-202.html#NRS202Sec355 ''State Code: NRS 202.355'']   
|-
! New Hampshire
| '''Legal''' – [http://www.gencourt.state.nh.us/legislation/2010/HB1665.html HB 1665-FN (2010)] || '''Legal''' – [http://www.gencourt.state.nh.us/legislation/2010/HB1665.html HB 1665-FN (2010)]
|-
! New Jersey
| '''Limited''' – Ownership, display, or possession unlawful unless possessor has an "explainable lawful purpose" for possession and then only if possessor used knife for lawful purpose, and not under circumstances "not manifestly appropriate for such lawful use[s]".<ref name="ReferenceC"/><ref name="See 2017"/><ref name="akti.org"/>|| '''Illegal''' – Carrying openly or concealed illegal except for members of armed forces, National Guard, or law enforcement officials authorized to carry such weapons<ref>New Jersey Code of Criminal Justice – 2C:39-3e, 3g(2)</ref>
|-
! New Mexico
| '''Illegal''' – [http://pweb.netcom.com/%7Ebrlevine/nm.txt ''State Code: Criminal Offenses – 30-1-12''] {{Webarchive|url=https://web.archive.org/web/20080509184722/http://pweb.netcom.com/~brlevine/nm.txt |date=2008-05-09 }} || '''Illegal''' – [http://pweb.netcom.com/%7Ebrlevine/nm.txt ''State Code: Criminal Offenses – 30-1-12''] {{Webarchive|url=https://web.archive.org/web/20080509184722/http://pweb.netcom.com/~brlevine/nm.txt |date=2008-05-09}}
|-
! New York
| '''Limited''' – Possession illegal except for holders of valid hunting, fishing, or fur-trapping licenses – [http://pweb.netcom.com/%7Ebrlevine/ny.txt ''State Code: Penal Law Section 265.01, 265.20(6)''] {{Webarchive|url=https://web.archive.org/web/20080513083032/http://pweb.netcom.com/~brlevine/ny.txt |date=2008-05-13 }}|| '''Limited''' – Carrying open or concealed illegal except for holders of valid hunting, fishing, or fur-trapping license actually engaging in said activity – [http://pweb.netcom.com/%7Ebrlevine/ny.txt ''State Code: Penal Law Section 265.01, 265.20(6)''] {{Webarchive|url=https://web.archive.org/web/20080513083032/http://pweb.netcom.com/~brlevine/ny.txt |date=2008-05-13 }} Note: several NY cities and the New York Transit Authority have additional criminal codes restricting or prohibiting the carrying of automatic knives.
|-
! North Carolina
| '''Legal''' – Ownership or possession legal except "on campus or other educational property", as defined in [http://ncga.state.nc.us/EnactedLegislation/Statutes/HTML/BySection/Chapter_14/GS_14-269.2.html ''NC General Statutes Chap. 14, Article 35, §14-269.2'']
|| '''Limited''' – Concealed carry illegal except when on one's own property; open carry legal unless with the intent "to terrify or alarm the public", or if on a school campus, state property, or into a Courthouse or at a parade, funeral procession, picket line, or demonstration upon any private health care facility. – [http://ncga.state.nc.us/EnactedLegislation/Statutes/HTML/BySection/Chapter_14/GS_14-269.html ''NC General Statutes Chapter 14, Article 35, §14-269''];
|-
! North Dakota
| '''Legal''' – [http://pweb.netcom.com/%7Ebrlevine/nd.txt ''State Code: Criminal Code – Weapons – 62.1-04-02''] || '''Legal''' – Concealed carry permitted only with dangerous weapons permit – [http://pweb.netcom.com/%7Ebrlevine/nd.txt ''State Code: Criminal Code – Weapons – 62.1-04-02'']
|-
! Ohio
| '''Legal''' – [http://codes.ohio.gov/orc/2923.12 ''State Code: § 2923.12''] || '''Legal''' – [https://search-prod.lis.state.oh.us/api/v2/general_assembly_133/legislation/sb140/05_EN/pdf/ ''SB 140''] (effective April 12, 2021) changes the definition of "deadly weapon" to explicitly exclude knives not actually used as weapons, thereby legalizing the open or concealed carry of any knife. [https://search-prod.lis.state.oh.us/api/v2/general_assembly_134/legislation/sb156/05_EN/pdf/ ''SB 156''] (effective September 13, 2022) protects knives under the state arms preemption law, prohibiting municipalities from enacting or enforcing regulations on knives. [https://codes.ohio.gov/ohio-revised-code/section-9.68 ''State Code: § 9.68''] [http://codes.ohio.gov/orc/2923.12 ''State Code: § 2923.12'']
|-
! Oklahoma
| '''Legal''' – [http://pweb.netcom.com/%7Ebrlevine/ok.txt ''State Code: §21-1272.''] {{Webarchive|url=https://web.archive.org/web/20080509190041/http://pweb.netcom.com/~brlevine/ok.txt |date=2008-05-09 }}|| '''Legal''' – HB 1911 (effective November 1, 2015) amends Title 21 O.S. § 1272 (unlawful carry). [http://www.ok.gov/cleet/documents/2015LegalUpdate_05Oct2015.pdf#page=5] {{Webarchive|url=https://web.archive.org/web/20151208171921/https://www.ok.gov/cleet/documents/2015LegalUpdate_05Oct2015.pdf#page=5 |date=2015-12-08 }}
|-
! Oregon
| '''Legal''' – [http://pweb.netcom.com/%7Ebrlevine/or.txt ''State Code: 166.240''] {{Webarchive|url=https://web.archive.org/web/20080513083443/http://pweb.netcom.com/~brlevine/or.txt |date=2008-05-13 }}|| '''Limited''' – Illegal if carried concealed [http://pweb.netcom.com/%7Ebrlevine/or.txt ''State Code: 166.240''] {{Webarchive|url=https://web.archive.org/web/20080513083443/http://pweb.netcom.com/~brlevine/or.txt |date=2008-05-13 }}
|-
! Pennsylvania
| '''Legal''' – Legal as of January 2, 2023 [House Bill 1929 amendment to State Code: Pa. C.S.A. 18.908]<ref>{{cite web | url=https://www.akti.org/state-knife-laws/pennsylvania/ | title=Pennsylvania Knife Laws | date=10 March 2014 }}</ref> || '''Limited''' –  Carry legal except "concealed carry of an automatic knife "…with the intent therewith unlawfully and maliciously to do injury to any other person…" remains illegal in Pennsylvania."<ref>{{cite web | url=https://kniferights.org/legislative-update/pennsylvania-switchblade-ban-repeal-signed/ | title=Pennsylvania Switchblade Ban Repeal Signed! Effective 1/2/2023 – Knife Rights | date=3 November 2022 }}</ref>''State Code: Pa. C.S.A. 18.907'']
|-
! Puerto Rico
| '''Illegal''' – [http://knife-expert.com/fedswitch.txt ''Title 15, Ch. 29, Sec. 1243 United States Code'']|| '''Illegal''' – [http://knife-expert.com/fedswitch.txt ''Title 15, Ch. 29, Sec. 1243 United States Code'']
|-
! Rhode Island
| '''Legal''' – [http://www.rilin.state.ri.us/Statutes/TITLE11/11-47/11-47-42.HTM ''State Code: 11-47-42'']|| '''Limited''' – legal to carry concealed unless blade is a [[dagger]], [[dirk]], or [[stiletto]] or concealed while containing a blade length of over {{convert|3|in|cm|abbr=on}} [http://www.rilin.state.ri.us/Statutes/TITLE11/11-47/11-47-42.HTM ''State Code: 11-47-42'']
|-
! South Carolina
| '''Legal''' – [http://pweb.netcom.com/%7Ebrlevine/sc.txt ''State Code: 16-23-460''] {{Webarchive|url=https://web.archive.org/web/20080509061053/http://pweb.netcom.com/~brlevine/sc.txt |date=2008-05-09 }}|| '''Legal''' – [http://www.scstatehouse.gov/code/t16c023.htm ''State Code: 16-23-460''] {{Webarchive|url=https://web.archive.org/web/20100621201138/http://www.scstatehouse.gov/code/t16c023.htm |date=2010-06-21 }}
|-
! South Dakota
| '''Legal''' – [http://pweb.netcom.com/%7Ebrlevine/sd.txt ''State Code: 22-14-19''] {{Webarchive|url=https://web.archive.org/web/20080513084016/http://pweb.netcom.com/~brlevine/sd.txt |date=2008-05-13 }} || '''Legal''' – [http://pweb.netcom.com/%7Ebrlevine/sd.txt ''State Code: 22-14-19''] {{Webarchive|url=https://web.archive.org/web/20080513084016/http://pweb.netcom.com/~brlevine/sd.txt |date=2008-05-13 }} Note: The City of Sioux Falls prohibits concealed carry of switchblades definable as a dirk, dagger, or other dangerous or deadly weapon or any instrument or device which when used is likely to produce death or great bodily harm, a definition which in practice appears to cover all switchblade knives.<ref>Sioux Falls § 133.001 (1957). There is an exemption for an "ordinary pocket knife" which does not include a switchblade: "An "ordinary pocket knife" means a small knife designed for carrying in a pocket or purse, that has its cutting edge and point entirely enclosed by its handle, and that may not be opened automatically by a throwing, explosive, or spring action."</ref><ref>Raposa, Megan, ''[https://www.argusleader.com/story/news/crime/non-emergency/2015/11/13/city-dont-pocket-switchblades-brass-knuckles/75652078/ City: Don't Pocket Switchblades, Brass Knuckles]'', Argus Leader 13 Nov 2015</ref> 
|-
! Tennessee
| '''Legal''' – [http://pweb.netcom.com/%7Ebrlevine/tn.txt ''State Code: 39-17-1302 (c) (1)''] {{Webarchive|url=https://web.archive.org/web/20080513083824/http://pweb.netcom.com/~brlevine/tn.txt |date=2008-05-13 }} || '''Legal''' – Effective July 1, 2014 – [http://pweb.netcom.com/%7Ebrlevine/tn.txt ''State Code: 39-17-1302''] {{Webarchive|url=https://web.archive.org/web/20080513083824/http://pweb.netcom.com/~brlevine/tn.txt |date=2008-05-13 }}
|-
! Texas
| '''Legal''' – Effective 9/1/13 – [ftp://ftp.legis.state.tx.us/bills/83R/billtext/html/house_bills/HB01800_HB01899/HB01862H.htm HB 1862] || '''Limited''' – Effective September 1, 2013 – Legal for adults and minors to carry a switchblade (or any knife) with a blade length of less than {{convert|5.5|in|cm|abbr=on}} (measuring the non-handle portion) [ftp://ftp.legis.state.tx.us/bills/83R/billtext/html/house_bills/HB01800_HB01899/HB01862H.htm HB 1862]. Switchblades with blades {{convert|5.5|in|cm|abbr=on}} or more are prohibited in certain locations listed in the Texas Penal Code.<ref>Texas Penal Code Title 10 Sect 46.02 (Places Weapons Prohibited): airports, amusement parks, churches, synagogues, or other places of religious worship, correctional facilities, courts, hospitals, nursing homes, racetracks, schools and colleges, on the physical premises of a school or educational institution, any grounds or building on which an activity sponsored by a school or educational institution is being conducted, any passenger transportation vehicle of a school or educational institution, polling places, on the premises where a high school, college, or professional sporting event is taking place, venues serving alcohol, and any area within 1000 feet of a designated execution site on execution day.</ref><ref>''[https://statutes.capitol.texas.gov/Docs/PE/htm/PE.46.htm#46.01 Texas Penal Code Title 10 Sect. 46.01 et seq]''</ref> 
|-
! U.S. Virgin Islands
| '''Illegal''' – [http://www.handgunlaw.us/states/usvirginislands.pdf ''Title 14 Chapter 119 § 2251 V.I.C.''] || '''Illegal''' – [http://www.handgunlaw.us/states/usvirginislands.pdf ''Title 14 Chapter 119 § 2251 V.I.C.'']
|-
! Utah
| '''Legal''' – [http://pweb.netcom.com/%7Ebrlevine/ut.txt ''State Code: Offenses Against Public Health and Safety – 76-10-504''] {{Webarchive|url=https://web.archive.org/web/20080509184840/http://pweb.netcom.com/~brlevine/ut.txt |date=2008-05-09 }} || '''Limited''' – Allowed if not concealed; concealed carry allowed with permit or license – [http://pweb.netcom.com/%7Ebrlevine/ut.txt ''State Code: Offenses Against Public Health and Safety – 76-10-504''] {{Webarchive|url=https://web.archive.org/web/20080509184840/http://pweb.netcom.com/~brlevine/ut.txt |date=2008-05-09 }}
|-
! Vermont
| '''Legal''' – [http://pweb.netcom.com/%7Ebrlevine/vt.txt ''State Code: Ch. 85 Weapons – T.13-4003''] {{Webarchive|url=https://web.archive.org/web/20080513083928/http://pweb.netcom.com/~brlevine/vt.txt |date=2008-05-13 }} || '''Legal''' – As long as blade is less than {{convert|3|in|cm|abbr=on}} – [http://pweb.netcom.com/%7Ebrlevine/vt.txt ''State Code: Ch. 85 Weapons – T.13-4003''] {{Webarchive|url=https://web.archive.org/web/20080513083928/http://pweb.netcom.com/~brlevine/vt.txt |date=2008-05-13}}
|-
! Virginia
| '''Legal''' – possession and sale legal as of 1 July 2022 per recent legislation.<ref>VA Senate Bill 758</ref><ref>§18.2-311. If any person sells or barters, or exhibits for sale or for barter, or gives or furnishes, or causes to be sold, bartered, given or furnished, or has in his possession, or under his control, with the intent of selling, bartering, giving or furnishing, any...<s>switchblade knife</s>, ballistic knife as defined in § 18.2-307.1, or like weapons, such person is guilty of a Class 4 misdemeanor. The having in one's possession of any such weapon shall be prima facie evidence, except in the case of a conservator of the peace, of his intent to sell, barter, give or furnish the same.</ref> || '''Legal''' as of 1 July 2023, except for those with double-edged blades.<ref>{{cite web | url=https://kniferights.org/legislative-update/virginia-switchblade-concealed-carry-ban-repeal-signed-by-governor/ | title=Virginia Switchblade Concealed Carry Ban Repeal Signed by Governor – Knife Rights | date=28 March 2023 }}</ref>
|-
! Washington
|'''Illegal''' – Only legal for possession by on/off-duty police officers and paramedics [http://apps.leg.wa.gov/RCW/default.aspx?cite=9.41.250 ''State Code: RCW 9.41.250''] [http://apps.leg.wa.gov/documents/billdocs/2011-12/Pdf/Bills/Session%20Laws/House/2346.SL.pdf HB 2346] || '''Illegal''' – [http://apps.leg.wa.gov/RCW/default.aspx?cite=9.41.250 ''State Code: RCW 9.41.250''] [http://apps.leg.wa.gov/documents/billdocs/2011-12/Pdf/Bills/Session%20Laws/House/2346.SL.pdf HB 2346]
|-
! West Virginia
| '''Legal''' – [http://pweb.netcom.com/%7Ebrlevine/wv.txt ''State Code: §61-7-2''] {{Webarchive|url=https://web.archive.org/web/20080509184712/http://pweb.netcom.com/~brlevine/wv.txt |date=2008-05-09 }} || '''Limited''' – Legal to carry concealed if 21 years of age or older. Illegal if carried concealed by a person under 21 years of age without a state license. – [http://pweb.netcom.com/%7Ebrlevine/wv.txt ''State Code: §61-7-2''] {{Webarchive|url=https://web.archive.org/web/20080509184712/http://pweb.netcom.com/~brlevine/wv.txt |date=2008-05-09 }}[http://www.wvlegislature.gov/wvcode/code.cfm?chap=61&art=7 ''W. Va. Code § 61-7-7'' (2016)]
|-
! Wisconsin
| '''Legal''' – For adults not convicted of a felony. – [http://pweb.netcom.com/%7Ebrlevine/wi.txt ''State Code: 941.24''] {{Webarchive|url=https://web.archive.org/web/20080513084000/http://pweb.netcom.com/~brlevine/wi.txt |date=2008-05-13 }}<ref name="Amended on February 6th, 2016">Amended on February 6th, 2016</ref> || '''Legal''' – Legal unless possessed or carried by a felon or on government property and other weapon-free zones. – [http://pweb.netcom.com/%7Ebrlevine/wi.txt ''State Code: 941.24''] {{Webarchive|url=https://web.archive.org/web/20080513084000/http://pweb.netcom.com/~brlevine/wi.txt |date=2008-05-13 }} {{Webarchive|url=https://web.archive.org/web/20080513084000/http://pweb.netcom.com/~brlevine/wi.txt |date=2008-05-13 }}<ref name="Amended on February 6th, 2016"/> ||
|-
! Wyoming
| '''Legal''' – [http://pweb.netcom.com/%7Ebrlevine/wy.txt ''State Code: Statutes 6-8-104''] || '''Limited''' – Illegal to carry switchblade definable as dangerous weapon concealed unless carrier meets eligibility requirements for a WY concealed carry permit. – [http://pweb.netcom.com/%7Ebrlevine/wy.txt ''State Code: Statutes 6-8-104'']
|}

====City and county ordinances====
Unless preempted by state law, various county, city, or other local jurisdictions may also have their own codes or ordinances further restricting or prohibiting switchblade possession or use, for example Sioux Falls, South Dakota, or Oakland, California.

== History ==
Switchblades date from the mid-18th century.<ref name="ME">Erickson, Mark (2004). ''Antique American Switchblades''. Krause Publications, 0873497534, 9780873497534</ref>  The development of the first automatic knife was made possible by the invention of small tempered springs by the clockmaker [[Benjamin Huntsman]] in 1742.<ref name="ZI">Zinser, Tim, Fuller, Dan, and Punchard, Neal, ''Switchblades of Italy'', Nashville, TN: Turner Publishing Co. (2003), ISBN 1-56311933-1, pp. 7,9-11</ref>

The first spring-fired switchblade that can be authenticated appeared in the late 1700s, probably constructed by a craftsman in Italy.<ref name="ZI"/> After 1816, no automatic knives were produced in Italy for 50 years due to laws passed by the Austro-Hungarian Empire.<ref name="ZI"/> By 1900, Italy had resumed production of automatic knives of the [[stiletto]] pattern, all hand-crafted by individual cutlers or small knife forges.  Most of these knifemakers were concentrated in the towns of Maniago, Frosolone, Campobasso, and Scarperia.

Unknown artisans  developed an automatic folding spike bayonet for use on [[flintlock]] pistols and [[coach gun]]s.<ref name="BE"/><ref name="ME"/> Examples of steel automatic folding knives from [[Sheffield]] in England have crown markings that date to 1840.<ref name="ME"/> Cutlery makers such as Tillotson, A. Davey, Beever, Hobson, Ibbotson and others produced automatic-opening knives.<ref name="ME"/> Some have simple iron bolsters and wooden handles, while others feature ornate, embossed silver alloy bolsters and stag handles.<ref name="ME"/> English-made knives often incorporate a "pen release" instead of a central handle button, whereby the main spring activated larger blade is released by pressing down on the closed smaller pen blade.<ref name="ME"/>

In France, 19th-century folding knives marked ''Châtellerault'' were available in both automatic and manually opened versions in several sizes and lengths.<ref name="ME"/> ''Châtellerault'' switchblades have recognizable features such as S-shaped cross guards, picklock type mechanisms and engraved decorative pearl and ivory handles.<ref name="ME"/> In Spain, Admiral D'Estaing is attributed with a type of folding naval dirk that doubled as an eating utensil.<ref name="ME"/> In closed (folded) position, the blade tip would extend beyond the handle to be used at the dining table. It could be spring activated to full length if needed as a side arm, by pressing a lever instead of a handle button.<ref name="ME"/> By 1850, at least one American company offered a .22 rimfire single-shot pistol equipped with a spring-operated knife.<ref name="BE"/> After the American Civil War (1865), knife production became industrialized.<ref name="ME"/> The oldest American made mass-production automatic knife is the ''Korn Patent Knife'', which used a rocking bolster release.<ref name="ME"/>

The advent of mass production methods enabled folding knives with multiple components to be produced in large numbers at lower cost.<ref name="BE"/> By 1890, US knife sales of all types were on the increase, buoyed by catalog mail order sales as well as mass marketing campaigns utilizing advertisements in periodicals and newspapers. In consequence, knife manufacturers began marketing new and much more affordable automatic knives to the general public. In Europe as well as the United States, automatic knife sales were never more than a fraction of sales generated by conventional folding knives, yet the type enjoyed consistent if modest sales from year to year.<ref name="BE"/>

In 1892, George [[Imperial Schrade|Schrade]], a toolmaker and machinist from [[New York City]] developed and patented the first of several practical automatic knife designs.<ref name="BE"/><ref name = "RL">{{cite book | last = Langston | first = Richard | title = Collector's Guide to Switchblade Knives: An Illustrated Historical and Price Reference | publisher = Paladin Press | year = 2001 | location = Boulder, Colorado | pages = 224 | isbn = 1-58160-283-9 }}</ref><ref name="SC">Schrade, George M. (1982). ''George Schrade and his accomplishments to the Knife Industry''. George Schrade Knife Co., ASIN B00072P8NU</ref> The following year, Schrade founded the New York Press Button Knife Company to manufacture his switchblade knife pattern, which had a unique release button mounted in the knife bolster.<ref name="SH"/> Schrade's company operated out of a small workshop in New York City and employed about a dozen workmen.<ref name="SH"/><ref name="SC"/>

===1900–1945===
Swordmakers in [[Toledo, Spain]], developed a market in the 1920s for gold plated automatic leverlock knives with pearl handles and enamel inlaid blades. Italian knifemakers had their own style of knives including both pushbutton and leverlock styles, some bearing design characteristics similar to the early French ''Châtellerault'' knife.<ref name="ZF"/> Prior to World War II, hand crafted automatic knives marked ''Campobasso'' or ''Frosolone'' were often called ''Flat Guards'' because of the two-piece top bolster design.<ref name="ZF"/> Some Italian switchblades incorporated a bayonet-type blade equipped with a blade lock release activated by prying up a locking flange at the hinge end, and were known as ''picklock'' models. These knives were later supplanted by newer designs which incorporated the blade lock release into a tilting bolster.<ref name="ZF"/>

In Italy, increased production of automatic knives resulted from the actions of German businessman Albert Marx, who owned two cutlery manufacturing concerns in Solingen, Germany.<ref name="ZI"/> After a trip to Maniago in 1907, Marx was convinced of the appeal of Italian style automatic knives, and duly took note of attempts by Maniago knifemakers to increase productivity using powered cutting tools.<ref name="ZI"/> Marx promptly introduced the Solingen methods of semi-mass production to the Maniago knife industry, increasing output and lowering individual costs.<ref name="ZI"/>  While Italian automatic knives would remain hand-assembled and to some extent hand-crafted products, Marx's innovations did increase production, enabling exports to other parts of Italy and eventually throughout Europe and abroad.<ref name="ZI"/><ref>''History of Maniago, Italy'', antiqueswitchbladeknives.com [http://antiqueswitchbladeknives.com/Italy.html], retrieved 28 March 2022</ref>  Over time, Maniago became the central hub of automatic knife production in Italy.

In the United States, commercial development of the switchblade knife was primarily dominated by the inventions of George Schrade and his ''New York Press Button Knife Company'',<ref name="BE"/><ref name="SC"/> though ''[[W. R. Case & Sons Cutlery Co.|W.R. Case]]'', ''[[KA-BAR|Union Cutlery]]'', ''[[Camillus Cutlery]]'', and other U.S. knife manufacturers also marketed automatic knives of their own design.<ref name="BE"/> Most of Schrade's switchblade patterns were automatic versions of utilitarian jackknives and [[pocket knives]], as well as smaller penknife models designed to appeal to women buyers.<ref name="ME"/> In 1903, Schrade sold his interest in the New York Press Button Knife Co. to the Walden Knife Co., and moved to Walden, New York, where he opened a new factory.<ref name="SH"/><ref name="SC"/> There Schrade became the company's production superintendent, establishing a production line to manufacture several patterns of Schrade-designed switchblade knives, ranging from a large folding hunter to a small pocket knife.<ref name="SC"/> Walden Knife Co. would go on to sell thousands of copies of Schrade's original bolster button design.<ref name="SH"/><ref name="SC"/>

The advertising campaigns of the day by Schrade and other automatic knife manufacturers focused on marketing to farmers, ranchers, hunters, or outdoors men who needed a compact [[pocket knife]] that could be quickly brought into action when needed.<ref name="BE"/> In rural areas of America, these campaigns were partially successful, particularly with younger buyers, who aspired to own the most modern tools at a time when new labor-saving inventions were constantly appearing on the market.<ref name="BE"/> Most American-made switchblades made after 1900 were patterned after standard utilitarian pocketknives, though a few larger ''Bowie'' or ''Folding Hunter'' patterns were produced with blade shapes and lengths that could be considered useful as [[knife fight|fighting knives]]. Most had flat or sabre-ground clip or spear-point blade profiles and single-sharpened edges.<ref name="SH"/> Blade lengths rarely exceeded {{convert|5|in|cm|abbr=on}}.<ref name="ME"/> A few manufacturers introduced the double switchblade, featuring two blades that could be automatically opened and locked with the push of a button.<ref name="SC"/>

At the low end of the market, ''Shapleigh Hardware Company'' of St. Louis, Missouri contracted thousands of switchblades under the trademark ''Diamond Edge'' for distribution to dealers across the United States and Canada.<ref name="BE"/> Most of these knives were novelty items, assembled at the lowest possible cost. Sold off display cards in countless hardware and general stores, many low-end ''Diamond Edge'' switchblades failed to last more than a few months in actual use.<ref name="BE"/><ref>Shackleford, p. 152: The name ''Diamond Edge'' would live on after Shapleigh Hardware went into bankruptcy in 1960. Its trademarks were purchased by Imperial Cutlery Company, who used the ''Diamond Edge'' trademark on a variety of knives.</ref> Other companies such as Imperial Knife and Remington Arms paid royalties to Schrade in order to produce automatic "contract knives" for rebranding and sale by large mail-order catalog retailers such as [[Sears, Roebuck & Co]].<ref name="BE"/><ref name="ME"/>

In 1904, in combination with his brothers Louis and William, George Schrade formed the Schrade Cutlery Co. in Walden, and began developing a new series of switchblades, which he patented in 1906–07.<ref name="SH"/> Schrade's new ''Safety Pushbutton Knives'' incorporated several design improvements over his earlier work, and featured a handle-mounted operating button with a sliding safety switch.<ref name="SC"/> A multi-blade operating button allowed the knife to operate with up to four automatic blades.<ref name="SC"/> In successive patents from 1906 through 1916 Schrade would steadily improve this design, which would later become known as the ''Presto'' series.<ref name="SH"/> With the ''Presto'' line, Schrade would largely dominate the automatic knife market in the United States for the next forty years. Schrade would go on to manufacture thousands of contract switchblade knives under several trademarks and brands, including ''E. Weck'', ''Wade & Butcher'', and ''Case XX'', while other companies used Schrade's patent as the basis for their own switchblade patterns. Among these were pocket and folding hunter pattern switchblades bearing the name ''[[Keen Kutter]]'', a trademark owned by E.C. Simmons Hardware Co. (later purchased by the Shapleigh Hardware Co.).

Having earned a handsome return from his work, Schrade traveled to Europe in 1911, first to [[Sheffield, England]], where he assisted ''Thomas Turner & Company'' in expediting a wartime order from the British Navy.<ref name="SC"/> He next moved to the knifemaking center of Solingen, Germany.<ref name="SH"/><ref name="SC"/> Schrade was aware of Solingen's reputation for having the best cutlery steel in Europe, and he opened a factory to produce his safety pushbutton switchblade knife there. In 1915 or 1916 Schrade sold his Solingen holdings (some sources state they were seized by the German government)<ref name="SH"/> and returned to the United States.<ref name="SH"/><ref name="SC"/>

In 1918, Captain [[Rupert Hughes]] of the U.S. Army submitted a patent application for a specialized automatic-opening [[trench knife]] of his own design, the ''Hughes Trench Knife''.<ref>Hughes, Rupert. ''[http://patents.google.com/patents?id=v-VbAAAAEBAJ&printsec=drawing&zoom=4#v=onepage&q&f=false Letters Patent No. 1,315,503 issued September 9, 1919] {{Webarchive|url=https://web.archive.org/web/20170406042115/https://patents.google.com/patents?id=v-VbAAAAEBAJ&printsec=drawing&zoom=4#v=onepage&q&f=false |date=April 6, 2017 }}'', Washington, D.C.: United States Patent Office</ref> This was a curious device consisting of a folding spring-loaded knife blade attached to a handle which fastened to the back of the hand and was secured by a leather strap, leaving the palm and fingers free for grasping other objects.<ref name="ReferenceB">Hughes, Rupert, ''Letters Patent No. 1,315,503 issued September 9, 1919'', Washington, D.C.: United States Patent Office</ref> Pressing a button on the handle automatically extended a knife blade into an open position and locked position, allowing the knife to be used as a stabbing weapon.<ref name="ReferenceB"/> The ''Hughes Trench Knife'' was evaluated as a potential military arm by a panel of U.S. Army officers from the American Expeditionary Force (AEF) in June 1918.<ref>Crowell, Benedict (1919), ''America's Munitions 1917–1918, Report of Benedict Crowell, Assistant Secretary of War (Director of Munitions)'', U.S. War Department, Washington, D.C.: U.S. Government Printing Office, pp. 88, 228</ref> After testing the board found the ''Hughes'' design to be of no value, and it was never adopted.<ref>''Military affairs: journal of the American Military Institute'', American Military History Foundation, American Military Institute, Kansas State University, Dept. of History (1937) Vol. I, p. 153</ref> Hughes went on to patent his automatic trench knife in 1919, though Hughes appears to have been unsuccessful in persuading a knife manufacturing company to produce his design.<ref name="ReferenceB"/>

From 1923 to 1951, the ''Union Cutlery Co.'' of Olean, New York produced a series of lever-operated switchblades designed for the mid and upper end of the market, featuring celluloid, stag, or jigged bone handles, a bolster-mounted push-button, all featuring the company's ''[[KA-BAR]]'' trademark on the blade tang.<ref name="ME"/> The line included the ''KA-BAR Grizzly'', ''KA-BAR Baby Grizzly'', and ''KA-BAR Model 6110 Lever Release'' knives.<ref>Erickson, Mark, ''Antique American Switchblades, Chapter 22: KA-BAR, a trademark of Union Cutlery Co., Olean, NY'', Krause Publications, {{ISBN|0-87349-753-8}} (2004)</ref> The largest model was ''KA-BAR Grizzly'', a folding hunter pattern with a broad bowie-type clip point blade.

[[File:Flylock pocket knife with two blades.jpg|thumb|Pocket knife made by Flylock Knife Company of Bridgeport, Connecticut with two spring-loaded, button activated blades. Scales are made of horn. Measures 3 3/8" (86 mm) closed. These were manufactured from 1918 to 1929.]]

Upon returning to the United States, Schrade made a final improvement to his ''Presto'' series of switchblades, filing his patent application on June 6, 1916.<ref name="SC"/> The next year, Schrade licensed a new flylock switchblade design to the ''Challenge Cutlery Company'', which he then joined.<ref name="SH"/> Under the trademark of ''Flylock Knife Co.'', Challenge made several patterns of the flylock switchblade, including a large {{convert|5|in|cm|abbr=on}} folding hunter model with hinged floating guard and a small pen knife model designed to appeal to women buyers.<ref name="BE"/><ref name="SC"/> A Challenge Cutlery advertisement of the day depicted a female hand operating a fly-lock automatic pen knife, accompanied by a caption urging women to buy one for their sewing kit so as not to break a nail while attempting to open a normal pen knife.<ref name="BE"/><ref name="ME"/> Schrade pursued his knifemaking interests at both Challenge and at Schrade, where his brother George now managed one of the company's factories.<ref name="SH"/>

With a few ex-Challenge employees Schrade formed a second company, the ''Geo. Schrade Knife Company'', primarily to manufacture his ''Presto'' series of switchblade knives.<ref name="SH"/> In 1937, Schrade came out with two more low-cost switchblade knives designed to appeal to youth, the ''Flying Jack'' and the ''Pull-Ball Knife''.<ref name="SC"/> The ''Flying Jack'' had a sliding operating latch and could be produced with one or more automatically opening blades. The ''Pull-Ball'' opened by pulling a ball located on the butt end of the handle.<ref name="Benson, pp. 49-50">Benson, pp. 49-50</ref> Schrade would later manufacture alternative configurations to the ball operating handle, including dice, rings, eight balls, or different colors.<ref name="SC"/> The ''Pull-Ball'' required two hands to open, removing much of the switchblade's utility as a one-handed knife.<ref name="Benson, pp. 49-50"/> As the blade catch mechanism required a good deal of space within the handle, the knife's blade length was short relative to its handle length.<ref name="Benson, pp. 49-50"/> Schrade manufactured many pull-ball knives for sale under other brands, including Remington, Case, and the "J.C.N. Co." (''Jewelry Cutlery Novelty Company'' of North Attleboro, Massachusetts)<ref name="SC"/> Always looking for a new way to appeal to customers, Schrade continued to experiment with new forms of switchblade designs up to the time of his death in 1940.

In the late 1930s the German [[Luftwaffe]] began training a ''Fallschirmjäger'' or paratroop force, and as part of this effort developed specialized equipment for the airborne soldier, including the ''[[Gravity knife|Fallschirmjäger-Messer]]'' (paratrooper's knife), which used a gravity-operated mechanism to deploy its sliding spearpoint blade from the handle. The German paratrooper knife, which featured a [[marlinspike]] in addition to the cutting blade, was used to cut rigging and unknot lines, though it could be employed as a weapon in an emergency. The U.S. Army in 1940 tasked the Geo. Schrade Knife Co. to produce a small single-edge switchblade for U.S. airborne troops, to be used similarly to the ''Fallschirmjäger-Messer''.<ref name="SC"/> The knife was not intended primarily as a fighting knife, but rather as a utility tool, to enable a paratrooper to rapidly cut himself out of his lines and harness in the event he could not escape them after landing.

The company's submission was approved by the U.S. Army Materiel Command in December 1940 as the Knife, Pocket, M2.<ref name="BE"/> The M2 had a {{convert|3.125|in|cm|abbr=on}} clip-point blade<ref>Some M2 knives featured a hawkbill blade</ref> and featured a carrying bail. Except for the bail, the M2 was for all intents and purposes a copy of George Schrade's popular Presto safety-button civilian model. The M2 was issued primarily to U.S. Army paratroopers during the war, though some knives appear to have been distributed to crews and members of the [[Office of Strategic Services]]. When issued to paratroopers, the M2 was normally carried in the dual-zippered knife pocket on the upper chest of the [[M42 jacket|M42 jump]] uniform jacket. After the war, the M2 was manufactured by Schrade (now Schrade-Walden, Inc.) as the ''Parachutist's Snap Blade Knife'' (MIL-K-10043) under a postwar military contract. In addition, other companies such as the Colonial Knife Co. made civilian versions of the M2 after the war.

===Postwar usage and the Italian stiletto===
[[File:2014 Nóż sprężynowy.jpg|thumb|left|Italian stiletto]]

From the end of World War II until 1958, most U.S.-manufactured switchblades were manufactured by Schrade (now ''Schrade-Walden, Inc.'', a division of ''Imperial Knife Co.''), and the Colonial Knife Co.

Schrade-Walden Inc. made knives under the ''Schrade-Walden'' trademark, while Colonial made a number of mass-produced switchblade patterns during the 1950s under the trademark ''Shur Snap''. Designed to a price point, ''Shur Snap'' switchblades feature stamped plated sheet-metal bolsters and plastic scales.

In 1956, the U.S. Air Force requested development for a new aircrew knife with several requirements, including the ability to be opened with one hand. The final result was the ''MC-1 Aircrew Survival Knife''. A development of the WW2-era M2 Parachutist Snap Blade knife, the MC-1 featured twin blades, The main blade was a blunt line-cutting blade with a protected sharpened inside edge for severing parachute lines, while the secondary blade opened automatically with a push button in the event the crew member could use only one hand.<ref>Trzaska, Frank, ''Misunderstood Switchblade'', Tactical Knives (July 2013)</ref> First issued in 1958, the MC-1 was restricted to U.S. military sales only, and was produced by the Camillus Cutlery Co., Logan/Smyth of Venice Florida, and Schrade-Walden Inc.. The last production contract for the MC-1 was cancelled in 1993.

After 1945, American soldiers returning home from Europe brought along individually purchased examples of the Italian style of stiletto pattern switchblade produced in Maniago and other cutlery towns.<ref name="ZF">Zinser, Fuller(2003) "Switchblades of Italy", Turner Publishing. {{ISBN|1-56311-933-1}}</ref> Though undeniably limited in practical usefulness, the style and beauty of the so-called stiletto switchblade was a revelation to US buyers accustomed to the utilitarian nature of most U.S.-made automatic knives such as the Schrade ''Presto'' pocketknife.<ref name="ZF"/>  Consumer demand for more of these knives resulted in the importation of large numbers of side-opening and [[Sliding knife|telescoping blade]] switchblades, primarily from Italy. In the case of the switchblade, the name stiletto derives from the blade design, since most Italian designs incorporated a long, slender blade tapering to a needle-like point, together with a slim-profile handle and vestigial cross-guard reminiscent of the medieval weapon. The majority of these stiletto pattern switchblade knives used a now-iconic slender [[bayonet]]-style blade with a single sabre-ground edge and an opposing false edge.  Other blade styles included the double-edged [[dagger]] and the curved-edge [[kris]].  Some were flimsy souvenirs made for tourists or novelty purchasers, while others were made with solid materials and workmanship.<ref name="BE"/><ref name="ZF"/>  Eventually, many thousands of Italian switchblades were exported to the US. Around this time, the traditional Italian switchblade 'picklock' method of blade release was largely replaced by the tilt bolster mechanism, ending the "Golden Age" of hand-crafted Italian switchblades.<ref name="ZF"/>

As with the medieval stiletto upon which it was based, the so-called stiletto switchblade was intended to be a concealable weapon optimized for thrusting rather than cutting or slashing (many imported stiletto switchblades had no sharpened cutting edge at all). These knives ranged in blade length from {{convert|2|to|18|in|cm|abbr=on}}.<ref name="BE"/> As a weapon, the stiletto switchblade was much less effective than most fixed-blade hunting and military knives commonly available in the US, including the [[Bowie knife]] and dagger, which could inflict deep slashing cuts as well as stab wounds.  However, its peculiar properties of easy concealment and rapid blade deployment appealed to some, and as with any other knife, the stiletto switchblade could inflict a severe wound, given sufficient blade length.

===1950s gang usage and controversy===
In 1950, an article titled "The Toy That Kills" appeared in the ''[[Woman's Home Companion]]'', a widely read U.S. periodical of the day. The article sparked a storm of controversy and a nationwide campaign that would eventually result in state and federal laws criminalizing the importation, sale, and possession of automatic-opening knives. In the article, author Jack Harrison Pollack assured the reader that the growing switchblade "menace" could have deadly consequence "as any crook can tell you".<ref name="ReferenceA">Pollack, Jack H., "The Toy That Kills", 77 ''[[Women's Home Companion]]'' 38, November 1950</ref> Pollack, a former aide to Democratic Senator [[Harley M. Kilgore]] and a [[ghostwriter]] for then-President [[Harry S Truman]], had authored a series of melodramatic magazine articles calling for new laws to address a variety of social ills. In "The Toy That Kills", Pollack wrote that the switchblade was "Designed for violence, deadly as a revolver—that's the switchblade, the 'toy' youngsters all over the country are taking up as a fad. Press the button on this new version of the pocketknife and the blade darts out like a snake's tongue. Action against this killer should be taken now".<ref name="ReferenceA"/> To back up his charges, Pollack quoted an unnamed juvenile court judge as saying: "It's only a short step from carrying a switchblade to gang warfare".<ref name="ReferenceA"/>

During the 1950s, established U.S. newspapers as well as the sensationalist tabloid press joined forces in promoting the image of a young delinquent with a stiletto switchblade or flick knife. While the press focused on the switchblade as a symbol of youthful evil intent, the American public's attention was attracted by lurid stories of urban youth gang warfare and the fact that many gangs were composed of lower class youth and/or racial minorities.<ref name="EN"/><ref>Siler, Wes, ''[https://gizmodo.com/why-switchblades-are-banned-1704050416 Why Switchblades Are Banned]'', Gizmodo</ref> The purported offensive nature of the stiletto switchblade combined with reports of knife fights, robberies, and stabbings by youth gangs and other criminal elements in urban areas of the United States generated continuing demands from newspaper editorial rooms and the public for new laws restricting the lawful possession and/or use of switchblade knives—with particular emphasis on racial minorities, especially African-American and Hispanic teens.<ref name="EN"/><ref>Levine, Bernard, "Switchblade Legacy", ''Knife World'' (August 1990), p. 24</ref> In 1954, the state of New York passed the first law banning the sale or distribution of switchblade knives in hopes of reducing gang violence. That same year, Democratic Rep. [[James J. Delaney]] of New York authored the first bill submitted to the U.S. Congress banning the manufacture and sale of switchblades.

Some U.S. congressmen saw the switchblade controversy as a political opportunity to capitalize on constant negative accounts of the switchblade knife and its connection to violence and youth gangs. This coverage included not only magazine articles but also highly popular films of the late 1950s including ''[[Rebel Without a Cause]]'' (1955), ''[[Blackboard Jungle]]'' (1955), ''[[Crime in the Streets]]'' (1956), ''[[12 Angry Men (1957 film)|12 Angry Men]]'' (1957), ''[[The Delinquents (1957 film)|The Delinquents]]'' (1957), ''[[High School Confidential (film)|High School Confidential]]'' (1958), and the 1957 [[Broadway theatre|Broadway]] musical ''[[West Side Story (musical)|West Side Story]]''.  Hollywood's fixation on the switchblade as the symbol of youth violence, sex, and delinquency resulted in renewed demands from the public and Congress to control the sale and possession of such knives.<ref name="TWFK">{{Citation | surname=Dick | given=Steven| title=The Working Folding Knife | year=1997| publisher= Stoeger Publishing Company |isbn= 978-0-88317-210-0 }}</ref><ref name="LEV">Levine, Bernard R., "[http://www.knife-expert.com/schr-pb.txt The Switchblade Menace]", ''OKCA Newsletter'' (1993): Rep. [[Sidney R. Yates]] (D) of Illinois was convinced of a sadistic connection, proclaiming that "vicious fantasies of omnipotence, idolatry ... barbaric and sadistic atrocities, and monstrous violations of accepted values spring from [switchblades]&nbsp;... Minus switchblade knives and the distorted feeling of power they beget—power that is swaggering, reckless, and itching to express itself in violence—our delinquent adolescents would be shorn of one of their most potent means of incitement to crime".</ref> State laws restricting or criminalizing switchblade possession and use were adopted by an increasing number of state legislatures.

In 1957, Senator [[Estes Kefauver]] (D) of Tennessee attempted unsuccessfully to pass a law restricting the importation and possession of switchblade knives. Opposition to the bill from the U.S. knife making industry was muted, with the exception of the Colonial Knife Co. and Schrade-Walden Inc., which were still manufacturing small quantities of pocket switchblades for the U.S. market.<ref name="BE"/> Some in the industry even supported the legislation, hoping to gain market share at the expense of Colonial and Schrade.<ref name="BE"/> However, the legislation failed to receive expected support from the U.S. Departments of Commerce and Justice, which considered the legislation unenforceable and an unwarranted intrusion into lawful sales in interstate commerce.<ref name="BE"/><ref name="EN"/>

While Kefauver's bill failed, a new U.S. Senate bill prohibiting the importation or possession of switchblade knives in interstate commerce was introduced the following year by Democratic Senator [[Peter F. Mack Jr.]] of Illinois in an attempt to reduce gang violence in Chicago and other urban centers in the state. With youth violence and delinquency aggravated by the severe economic [[Recession of 1958|recession]], Mack's bill was enacted by Congress and signed into law as the Switchblade Knife Act of 1958.

The melodrama created by US media towards the stiletto switchblade had its effect in Canada and the United Kingdom.  The US Switchblade Knife Act was closely followed by the UK Restriction of Offensive Weapons Act of 1959.<ref name="EN">Nappen, Evan(2003), "Are Switchblades Sporting Knives", Sporting Knives 2003: 60-65, {{ISBN|0-87349-430-X}}</ref> In Canada,  Parliament amended the [[Criminal Code (Canada)|Criminal Code]] in 1959 to include all new-production automatic knives as prohibited weapons - banned from importation, sale or possession within that country.

The new laws treated all automatic-opening knives as a prohibited class, even knives with utility or general-purpose blades not generally used by criminals. Curiously, the sale and possession of stilettos and other 'offensive' knives with fixed or lockback blades were not prohibited. In other U.S. states, the sale and possession of switchblade knives remained legal, particularly in rural states where a significant proportion of the population possessed firearms.  As late as 1968, Jack Pollack was still writing lurid articles demanding further federal legislation prohibiting the purchase or possession of switchblade knives. That same year, New York congressman [[Lester L. Wolff]] (D) even read one of Pollack's articles into the U.S. Congressional Record while introducing legislation to further restrict the sale and transportation of switchblades, arguing that 'switchblade knives have no redeeming social value and are restricted almost solely to violence'.<ref>Pollack, Jackson. "We Must Stop The Sale Of Switchblade Knives". ''Parade Magazine''. May 26, 1968: "It could happen to you or any member of your family, any time, anywhere...Tempers flare. Suddenly a hand streaks toward a pocket. There Is a swift click. A hidden, dagger-tipped blade darts out like a snake's tongue. Clutched In a fist is a murderous "switchblade ... "</ref><ref>Wolff, Lester L., Speech to the House of Representatives, U.S. Congressional Record (House), May 27, 1968</ref><ref>UPI, ''The Salinas Californian'', Salinas, CA: 27 May 1968: Rep. Lester L. Wolff, D-N. Y., said today he would introduce legislation shortly to restrict both the manufacture and sale of switchblade knives and similar weapons.</ref><ref>Wolff, Lester R., Prohibited Knife Act, HR8612, HR8613, HR8198, U.S. Congress, 1968, 1973-1974: In his bill's declaration, Rep. Wolff stated flatly that 'switchblade knives have no redeeming social value and are restricted almost solely to violence'.  Wolff would continue his legislative attempts to ban switchblade sales and ownership until 1974.</ref>

As an anti-violence measure, legislation against switchblade sales or use clearly failed in the United States, as youth street gangs increasingly turned from bats and knives to handguns, [[MAC-10]]s, and [[AK-47]]s to settle their disputes over territory as well as income from prostitution, extortion, and illicit drug sales.<ref>Moore, Joan W., ''Going Down to the Barrio: Homeboys and Homegirls in Change'', Philadelphia PA: Temple University Press, {{ISBN|0-87722-855-8}}, {{ISBN|978-0-87722-855-4}} (1991), pp. 40, 59-60</ref><ref>McCorkle, Richard C. and Miethe, Terance D. (2001). ''Panic: The Social Construction of the Street Gang Problem''. New York: Prentice-Hall. pp. 54, 214. {{ISBN|0-13-094458-0}}, {{ISBN|978-0-13-094458-0}}</ref><ref>Schneider, Eric C. (2001). ''Vampires, Dragons, and Egyptian Kings: Youth Gangs in Postwar New York''. Princeton, NJ: Princeton University Press, p. 242. {{ISBN|0-691-07454-2}}</ref> In fact, the U.S. murder rate using cutting or stabbing instruments of all types declined from 23% of all murders in 1965 to just 12% in 2012.<ref>Department of Justice, Federal Bureau of Investigation, ''Uniform Crime Reports for the United States, 1965; Crime in the United States (2012)''</ref>

====1970-2000====
By the late 1960s, new production of switchblades in the United States was largely limited to military contract automatic knives such as the MC-1.<ref name="ME"/>

In Italy, switchblades known among collectors as "Transitionals" were made with a mix of modern parts and leftover old style parts.<ref name="ZF"/>

Switchblade knives continued to be sold and collected in those states in which possession remained legal. In the 1980s, automatic knife imports to the U.S. resumed with the concept of kit knives, allowing the user to assemble a working switchblade from a parts kit with the addition of a mainspring or other key part (often sold separately). Since no law prohibited importation of switchblade parts or unassembled kits, all risk of prosecution was assumed by the assembling purchaser, not the importer. This loophole was eventually closed by new federal regulations.<ref>U.S. 19 CFR 12.95 (1990) Definitions: "A 'switchblade knife' means any imported knife, or components thereof, or any class of imported knife ... which has one or more of the following characteristics or identities: (3) Unassembled knife kits or knife handles without blades which, when fully assembled with added blades, springs, or other parts, are knives which open automatically by hand pressure applied to a button or device in the handle of the knife or by operation of inertia, gravity, or both."</ref>

====Present day====
The ability to purchase or carry switchblades or automatic knives continues to be heavily restricted or prohibited throughout much of Europe, with some notable exceptions. In Britain, the folding type of switchblade is commonly referred to as a flick knife. In the UK, knives with an automated opening system are nearly impossible to acquire or carry legally; although they can legally be owned, it is illegal to manufacture, sell, hire, give, lend, or import such knives. This definition would nominally restrict lawful ownership to 'grandfathered' automatic knives already in possession by their owner prior to the enactment of the applicable law in 1959. Even when such a knife is legally owned, carrying it in public without good reason or lawful authority is also illegal under current UK laws.

Under US federal laws, switchblades remain illegal to import from abroad or to purchase through interstate commerce since 1958 under the old Switchblade Knife Act (15 U.S.C. §§1241-1245).  In recent years, many U.S. states have repealed laws prohibiting the purchase or possession of automatic or switchblade knives in their entirety.

====Modern-day switchblade development====
Despite federal law, there are still a number of U.S. knife companies and custom makers who build automatic knives, primarily for use by the military and emergency personnel.<ref name="EN"/> Some well known present-day automatic knife manufacturers include [[Buck Knives]], Colonial Knife Co., [[Microtech Knives]], [[Benchmade]], Severtech, [[Gerber Legendary Blades]], Mikov, Pro-Tech Knives, Dalton, [[Böker]], [[Spyderco]], [[Kershaw Knives]], and Piranha.<ref name="EN"/> Colonial currently manufactures the M724 Automatic Rescue Knife, which is currently being issued for use in all U.S. military aircraft ejection seat survival kits.

The classic Italian-style stiletto switchblade continues to be produced in Italy, Taiwan, and China. Automatic knife manufacture in Italy consists predominantly as a cottage industry of family-oriented businesses. These include Frank Beltrame and AGA Campolin, which have been making automatic knives using hand assembly techniques for more than half a century.<ref name="ZF"/> Since the late 1990s, the nations of Taiwan and China have emerged as large-scale producers of automatic knives.

Automatic or switchblade knives have been produced in the following countries: Argentina, China, Czech Republic, England, France, Germany, Hong Kong, India, Italy, Japan, Mexico, Korea, Pakistan, Poland, Russia, Spain, Switzerland, Taiwan and U.S.A.{{Citation needed|reason=reliable source needed|date=March 2014}}

==See also==
* [[Assisted-opening knife]]
* [[Ballistic knife]]
* [[Butterfly knife]]
* [[Gravity knife]]

== Notes ==
{{Reflist|2}}

== Further reading ==
{{Refbegin|2}}
* Aldighieri, Paolo, ''Coltello a scatto antico italiano - Italian Switchblade'', self-published, {{ISBN|979-1220036887}} (2018)
* Benson, Ragnar, ''Switchblade: The Ace of Blades'', Paladin Press, {{ISBN|1-58160-283-9}} (1989)
* Byrd, K. L., SwitchPix-.com
* Erickson, Mark, ''Antique American Switchblades'', Krause Publications, {{ISBN|0-87349-753-8}} (2004)
* Federico, Vincent, ''Foreign Spring Steel: Collectors Guide Vol. I'', self-published (2003)
* {{cite journal |last=Jones |first=Adrian |last2=Fuller |first2=Dan |title=The Evolution of a Social Problem: The Case of the Switchblade Knife |journal=Deviant Behavior |volume=45 |issue=2 |date=2024 |issn=0163-9625 |doi=10.1080/01639625.2023.2245105 |pages=287–299 |url=https://www.tandfonline.com/doi/full/10.1080/01639625.2023.2245105 |access-date=2025-05-16|url-access=subscription }}
* Langston, Richard, ''Collector's Guide to Switchblade Knives'', Paladin Press {{ISBN|1-58160-283-9}}, {{ISBN|978-1-58160-283-8}} (2001)
* Meyers, Ben and Meyers, Lowell, ''An Introduction to Switchblade Knives'', American Eagle Publishing (1982)
* Shackleford, Steve, (ed.), ''Blade's Guide to Knives and Their Values'', Krause Publications, {{ISBN|978-1-4402-0387-9}} (1989)
* Zinser, Tim, Fuller, Dan, and Punchard, Neal, ''Switchblades of Italy'', Nashville, TN: Turner Publishing Co., {{ISBN|1-56311933-1}} (2003)
{{Refend}}

== External links ==
{{Commons category}}
* [http://pweb.netcom.com/~brlevine/sta-law.htm Netcom.com] ({{Webarchive|url=https://web.archive.org/web/20060820194833/http://pweb.netcom.com/~brlevine/sta-law.htm |date=2006-08-20 }}), Bernard Levine - State Knife Laws
* [http://police.govt.nz/service/firearms/swords-knives.html Police.govt.nz] ({{Webarchive|url=https://web.archive.org/web/20070112024841/http://police.govt.nz/service/firearms/swords-knives.html |date=2007-01-12 }}), NZ Police: "Swords, Knives and Bayonets"
* [http://www.akti.org/federal-switchblade-act/ State laws map from AKTI]

{{Knives}}
{{Cutting and abrasive tools}}

[[Category:Edged and bladed weapons]]
[[Category:Knives]]
[[Category:Pocket knives]]