View source for Machine drawn cylinder sheet glass

{{Short description|Glass production technique}}
{{use mdy dates|date=June 2025}}
[[File:The Employment of Women in Britain, 1914-1918 Q28392.jpg|thumb|A Lancashire factory worker with a cylinder of glass (1918)]]
'''Machine drawn cylinder sheet''' was the first mechanical method for "drawing" window [[glass]]. Cylinders of glass {{convert|40|ft|m}} high are drawn vertically from a circular tank. The glass is then [[Annealing (glass)|annealed]] and cut into {{convert|7|to|10|ft|m|adj=on}} cylinders. These are cut lengthways, reheated, and flattened.

This process was invented in the US in 1903.  This type of glass was manufactured in the early 20th century (it was manufactured in the United Kingdom by [[Pilkington]] from 1910 to 1933).

Other historical methods for making window glass included [[broad sheet]], [[blown plate]], [[Crown glass (window)|crown glass]], [[polished plate]] and [[cylinder blown sheet]]. These methods of manufacture lasted at least until the end of the 19th century.  The early 20th century marks the move away from hand-blown to machine manufactured glass such as [[rolled plate]], [[flat drawn sheet]], [[single and twin ground polished plate]] and [[float glass]].

==Sources==
*{{cite web|title=Hand-blown glass: manufacturing process |work=London Crown Glass Company |url=http://www.londoncrownglass.co.uk/Manufacturing.html |access-date=December 30, 2005 |archive-url=https://web.archive.org/web/20051106023351/http://www.londoncrownglass.co.uk/Manufacturing.html |archive-date=November 6, 2005 |url-status=dead }}

{{Glass forming}}

[[Category:Glass production]]


{{Glass-engineering-stub}}