Pressed glass (or pattern glass) is a form of glass made by pressing molten glass into a mold using a plunger. 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.
Pressed glass (or pattern glass) is a form of glass made by pressing molten glass into a mold using a plunger. 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.
Source: Wikipedia "Pressed glass" · CC BY-SA 4.0
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