Patent prismatic rolled glass, c 1892-1930.

Made:
England
maker:
Pilkington Glass Limited
and
Pilkington Glass Limited
and

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Science Museum Group Collection
© The Board of Trustees of the Science Museum, London

Science Museum Group Collection
© The Board of Trustees of the Science Museum, London

Sample of patent prismatic rolled glass by Pilkington Brothers Ltd., St. Helens, England, 1892-1930. Glass is fluid at high temperatures and its fluidity decreases as the temperature is reduced. Glass does not have a specific melting or freezing point but gradually changes from the solid state to the liquid state as the temperature is increased. This property of variable viscosity is used when glass is formed into objects, whether of beauty or utility.The two manufacturing processes for producing flat glass in the UK are the float glass method and rolling. In rolling a continuous stream of molten glass is poured between water-cooled rollers.

Details

Category:
Glass Technology
Object Number:
1987-260
type:
prismatic rolled glass
credit:
Geological Museum
status:
Permanent collection

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