Form of glass made by pressing molten glass into a mold using a plunger
Pressed glass (or pattern glass)[1] is a form of
glass made by pressing molten glass into a
mold using a
plunger.[2] Although hand pressed glass has existed for over 1,000 years, the use of a machine for pressing was first patented by Pittsburgh glass man
John P. Bakewell in 1825 to make knobs for furniture.
The technique was developed in the
United States from the 1820s and in
Europe, particularly
France,
Bohemia, and
Sweden from the 1830s. By the mid-19th century, most inexpensive mass-produced
glassware was pressed (1850–1910).[1] One type of pressed glass is
carnival glass.[3] Painted pressed glass produced in the early 20th century is often called
goofus glass.[citation needed] The method is also used to make
beads.[4]
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ab[1]"pressed glass". www.britannica.com. Encyclopaedia Britannica Inc. July 20, 1998. Retrieved March 3, 2022. pressed glass, glassware produced by mechanically pressing molten glass into a plain or engraved mold by means of a plunger