Glass-made lid for a cooking pan and the like and a method of ma

Details Glass-made lid for a cooking pan and the like and a method of ma Glass-made lid for a cooking pan and the like and a method of ma

1988-06-07

1989-07-18

Kellogg, Arthur

Glass manufacturing

Processes

Reshaping or surface deformation of glass preform

65104, 65268, 65275, 220 82R, 220356, 220377, C03B 23023

Patent

active

048490032

ABSTRACT:
A glass-made lid for a cooking pot, pan, and the like and a method of manufacture thereof are disclosed, wherein the glass-made lid includes a peripheral edge of a particular shape formed from a roundly-cut sheet glass by rotating either the sheet glass or a thermally-resistant forming roller to the other and the method provides such a glass-made lid having the features described above. For the purpose of the invention, the forming roller is provided adjacent to the sheet glass and includes a peripheral recess on the side facing the sheet glass so that the peripheral edge in its softened state can be formed to conform to the particular shape of the peripheral recess under the pressure of the forming roller when it is brought closer to the sheet glass. An additional thermally-resistant nipping roller includes two rolls for engaging the formed peripheral edge therebetween and reforming it to a particular shape. Finally, the formed sheet glass is formed by any applied heating so that it can have a curved surface.

REFERENCES:
patent: 293035 (1884-03-01), Jones
patent: 2950569 (1960-08-01), Chapman
patent: 4053295 (1977-10-01), Miyauchi
patent: 4260405 (1981-04-01), Ambrogi

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