Shaping glass sheets using molds of different shapes

Details Shaping glass sheets using molds of different shapes Shaping glass sheets using molds of different shapes

1979-09-25

1981-02-24

Kellogg, Arthur D.

Glass manufacturing

Processes

Reshaping or surface deformation of glass preform

65107, 65273, 65268, 65287, C03B 23023

Patent

active

042525527

ABSTRACT:
Shaping glass sheets by lifting a heat-softened glass sheet on a lower mold having an upwardly facing surface defining a given sharpness of bend and transferring said glass sheet by suction to an upper vacuum mold having a downwardly facing shaping surface defining a lesser sharpness of bend. Optionally, a ring-like member defining a sharpness of bend that may be equal to, less severe, or more severe than that defined by the upper vacuum mold moves between the molds when the latter are separated to impose a shape in the glass sheet that is correlated with the shape defined by the ring-like member. The ring-like member is used to support the glass sheet for rapid cooling if the glass sheet is to be tempered. Only the ring-like member need be changed when a change in production pattern is made.

REFERENCES:
patent: 1889881 (1932-12-01), Thompson
patent: 2817928 (1957-12-01), Lambert et al.
patent: 3508903 (1970-04-01), Seymour
patent: 3573889 (1971-04-01), McMaster et al.
patent: 3607187 (1971-09-01), McMaster
patent: 3846106 (1974-11-01), Seymour
patent: 4092141 (1978-05-01), Frank et al.
patent: 4185986 (1980-01-01), Frank
patent: 4202681 (1980-05-01), McMaster et al.
patent: 4204854 (1980-05-01), McMaster

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