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Plate glass is often used in windows. Fragment of a Roman window glass plate dated to 1st to 4th century CE. Plate glass, flat glass or sheet glass is a type of glass, initially produced in plane form, commonly used for windows, glass doors, transparent walls, and windscreens. For modern architectural and automotive applications, the flat glass ...
Evidence of the use of the blown plate glass method dates back to 1620 in London and was used for mirrors and coach plates. Louis Lucas de Nehou and A. Thevart perfected the process of casting polished plate glass in 1688 in France. Prior to this invention, mirror plates, made from blown "sheet" glass, had been limited in size.
Machine drawn cylinder sheet was the first mechanical method for "drawing" window glass. Cylinders of glass 40 feet (12 m) high are drawn vertically from a circular tank. The glass is then annealed and cut into 7 to 10 foot (2 to 3 m) cylinders. These are cut lengthways, reheated, and flattened. This process was invented in the US in 1903.
Glassware was produced by 73 of these factories, while 49 made window glass. Green glass was produced at 42 factories, and plate glass was made at five glass works. [76] Based on the value of the glass produced, Pennsylvania accounted for 41 percent of production, while New Jersey accounted for 13 percent. [77]
Window glass was made at 49 glass works, while plate glass was made at five establishments. [8] The total value of all glass products produced was $21,154,571 (equivalent to $667,900,869 in 2023). Glassware accounted for 45 percent of the total value of glass products made in 1880; while green glass, window glass, and plate glass had ...
The Marsh Plate Glass Company built a plant to use the new technology, which was purchased by Pittsburg Plate Glass Company before 1901. [52] In addition to the two just–mentioned companies, the Edward Ford Plate Glass Company became involved with continuous lehrs for plate glass in 1900. [52]
In 1839 the Chance Brothers invented the patent plate process where the glass plate was placed on a wet piece of leather and ground and polished to remove all the surface damage. [2] Other methods of producing hand-blown window glass included broad sheet, blown plate, crown glass and polished plate. These methods of manufacture lasted at least ...
Other terms often used for printed engravings are copper engraving, copper-plate engraving or line engraving. Steel engraving is the same technique, on steel or steel-faced plates, and was mostly used for banknotes, illustrations for books, magazines and reproductive prints, letterheads and similar uses from about 1790 to the early 20th century, when the technique became less popular, except ...