View source for Prussian G 12.1

{{morefootnotes|date=April 2021}}
{{Infobox locomotive
| name             = Prussia, Alsace-Lorraine G&nbsp;12.1<br/>DRG Class 58.0<br/>SNCF 1-150.B<br/>Belgian State Railways Type 92
| bgcolor          = 000000
| color            = FFFFFF
| builder          = [[Henschel-Werke|Henschel]]
| builddate        = 1915–1917
| totalproduction  = 33
| whytetype        = [[2-10-0]]
| DRGtype          = G 56.17
| gauge            = {{track gauge|sg}}
| leadingdiameter  = {{convert|1000|mm|ftin|frac=8|abbr=on}}
| driverdiameter   = {{convert|1400|mm|ftin|frac=8|abbr=on}}
| over bufferbeams = {{convert|20340|mm|ftin|frac=4|abbr=on}}
| axleload         = {{convert|17.1|t|abbr=on}}
| serviceweight    = {{convert|98.8|t|abbr=on}}
| weightondrivers  = {{convert|84.3|t|abbr=on}}
| fuelcap          = 
| watercap         = {{convert|21.5|m3|impgal usgal|abbr=on}}
| boilerpressure   = {{convert|14|kgf/cm2|MPa lbf/in2|sigfig=3|abbr=on}}
| fireboxarea      = {{convert|3.28|m2|sqft|abbr=on}}
| evaporativearea  = {{convert|195.63|m2|sqft|abbr=on}}
| superheaterarea  = {{convert|77.72|m2|sqft|abbr=on}}
| cylindercount    = 3
| cylindersize     = {{convert|560|mm|in|frac=16|abbr=on}}
| pistonstroke     = {{convert|660|mm|in|frac=16|abbr=on}}
| maxspeed         = {{convert|60|km/h|abbr=on}}
| indicatedpower   = 1,203 kW {{convert|1640|PS|kW hp|sigfig=3|abbr=on}}
| fleetnumbers     = {{ubl|Erfurt 5551–5554|Cassel 5551–5555|Saarbrücken 5551–5562|EL 5551–5562|DRG 58&nbsp;001&nbsp;– 58&nbsp;015}}
| retiredate       = 1957
}}
The '''Prussian G 12.1''' was a German [[steam locomotive]] built for the [[Prussian state railways]] during the [[First World War]] and was the largest Prussian freight locomotive with a 2-10-0 [[Whyte notation|wheel arrangement]]. It had three [[cylinder (locomotive)|cylinder]]s, the two outer ones driving the third axle and the inner one the second axle.
 
==History==
As early as 1913 there was a requirement for a powerful goods train locomotive in several of the divisions within the Prussian state railways. This need grew as a result of the [[First World War]]; at the same time however the delivery of the first engine by [[Henschel-Werke]] was delayed until 1915.

Between 1915 and 1917, 21 vehicles were built for Prussia and 12 for the [[Imperial Railways in Alsace-Lorraine]]. All the locomotives were manufactured by [[Henschel-Werke|Henschel]]. The Prussian locos went to the [[Erfurt]] (4), [[Kassel|Cassel]] (5) and [[Saarbrücken]] (12) divisions.{{sfn|Hütter|2015|pp=463–464}} Further production was then ceased in favour of the [[Prussian G 12|G 12]].

The [[Deutsche Reichsbahn]] took over 15 vehicles from Prussia as the '''DRG Class 58.0''' and gave them operating numbers 58&nbsp; 001 to 58&nbsp;015. The majority of locomotives were retired by 1935. Numbers 58&nbsp;002 and 58&nbsp;005 ended up in the [[Deutsche Reichsbahn (East Germany)|Deutsche Reichsbahn]] in [[East Germany]] after the [[Second World War]]. The last one, number 58 005, was retired in 1957.{{sfn|Hütter|2015|pp=463–464}}

Five of the Saarbrücken Division locomotives had to be surrendered to France as [[World War I reparations|reparations]]. They went to the ''[[Chemins de fer de l'Est]]'', who numbered then 5101–5105. They sold them to the ''[[Administration des chemins de fer d'Alsace et de Lorraine ]]'' in 1925, who renumbered then 5546–5550, below the G&nbsp;12.1 locomotives that they had had from new, the higher numbers already being occupied by G&nbsp;12 locomotives. They were allocated to the [[Hausbergen]] and [[Thionville]] locomotive depots and used to haul heavy heavy coal and ore trains. In 1938, all 17 passed to the [[SNCF]], who renumbered them as 1-150.B.546 to 1-150.B.562 and scrapped them by 1955.{{sfnb|Davies|2001|p=76}}{{sfnb|Spielhoff|1991|p=193–195}}

One Erfurt Division locomotive was surrendered to Belgium, where the [[Belgian State Railways]] classified it as Type 92, and numbered it 9252.{{sfn|Hütter|2015|p=463}}

The engines were equipped with [[tender (rail)|tender]]s of Class pr 2′2′ T 21.5.
{{clear}}

==Saxon XIII H ==
{{Infobox locomotive
| name             = Saxon XIII H<br/>DRG Class 58.1<br/>SNCF 1-150.D
| image =  Sächsische XIII H historische Aufnahme.jpg
| bgcolor          = 698B69
| color            = FFFFFF
| builder          = [[Sächsische Maschinenfabrik|Hartmann]]
| builddate        = 1917
| totalproduction  = 20
| over bufferbeams = {{convert|20703|mm|ftin|frac=4|abbr=on}}
| serviceweight    = {{convert|101.1|t|abbr=on}}
| fuelcap          = 
| watercap         = {{convert|21.0|m3|impgal usgal|abbr=on}}
| evaporativearea  = {{convert|210.51|m2|sqft|abbr=on}}
| superheaterarea  = {{convert|81.26|m2|sqft|abbr=on}}
| fleetnumbers     = {{ubl|K.Sä.St.E.: 1165–1184<br/>Est: 5201–5206|DRG 58&nbsp;101&nbsp;– 58&nbsp;114}}
| notes            = data shown where different from G 12.1
}}
In 1917 the [[Royal Saxon State Railways]] ordered [[Sächsische Maschinenfabrik|Hartmann]] to build 20 locomotives based on the Prussian G 12.1. The engines were classified as the '''Saxon XIII&nbsp;H''' but had numerous improvements compared with their prototypes. They were given a larger total heating area, a bigger [[superheater]] area and new tubing. They were therefore heavier than the Prussian locomotives and were the first German locomotives to exceed 100&nbsp;tonnes. They were supplied with sä 2′2′ T 21 [[tender (rail)|tenders]].

The 20 locomotives were given railway numbers 1165–1184. After the [[First World War]] six units had to be given to [[France]] as reparations. The [[Deutsche Reichsbahn]] took over the remaining 14 vehicles as '''DRG Class 58.1''' with operating numbers 58&nbsp; 101 to 58&nbsp;114.{{sfn|Hütter|2015|p=465}} The locomotives in France were allocated to the ''Chemin de fer de l'Est'' who numbered them 5201 to 5206. They all passed to the SNCF in 1938 who renumbered them 1-150.D.201 to 1-150.D.206.{{sfnb|Davies|2001|p=76}}

The German locomotives had a short life of 16 years – the DRG retired them in 1933 and 1934.{{sfn|Hütter|2015|p=465}} During the [[Second World War]] the SNCF locomotives were sent to [[Saxony]] as so-called 'loan locomotives' (''Leihlokomotiven'') They remained in [[East Germany]] after the war and went into the [[Deutsche Reichsbahn (GDR)|DR]] fleet. They were retired by 1951, although it was April 1953 before the SNCF wrote the locomotives off its books.{{sfnb|Davies|2001|p=76}}

Like Prussia, after the initial series, Saxony only ordered further batches of its successor, the [[Prussian G 12]], although it was also designated the Class XIII H. The ''Chemins de fer de l'Est'' however, used the design as the basis for its [[Est 150.001 to 150.195|5211-series]] (later 150.001-series), a class of 195 locomotives built 1926 to 1932 by French manufacturers.{{sfnb|Davies|2001|pp=76–79, 91–93}}

==Notes==
{{Reflist}}

==References==
*{{Davies-EstLocoList3}}
*{{Hütter-54bis59|pages=463–464, 465–466}}
*{{Spielhoff-EL}}

==Further reading==
*{{Vandenberghen-SNCB12.2|pages=277–283}}
*{{Wagner-EFA2.3.2|pages=184–186}}
*{{Weisbrod-EFA1.2|pages=172–176}}

==See also==
* [[List of Prussian locomotives and railcars]]
* [[Prussian G 12|Württemberg G 12]]

{{Prussian locomotives}}

[[Category:2-10-0 locomotives]]
[[Category:Locomotives of Prussia|G 12.1]]
[[Category:Standard-gauge locomotives of Germany]]
[[Category:Standard-gauge locomotives of France]]
[[Category:Henschel locomotives]]
[[Category:1′E h3 locomotives]]
[[Category:Freight locomotives]]