Apparatus for bending glass sheets

Details Apparatus for bending glass sheets Apparatus for bending glass sheets

1991-06-26

1993-01-12

Woodard, Joye L.

Glass manufacturing

Glassworking or preform by or with reheating means

Planar sheet preform

65162, 65356, C03B 2303

Patent

active

051786605

ABSTRACT:
The present invention relates to a female press bending ring for use in the press bending of glass sheets outside of a furnace, and more particularly to a female press bending ring which is suitably heated during the bending cycle to regulate the transfer of heat between the peripheral margin of the glass and the female bending ring with which it is in contact. By so doing, near-edge tension and edge stresses are greatly reduced, thereby reducing chill cracking and glass breakage during and after production. The female ring may be covered by a layer of fiberglass cloth or the like to provide a smooth resilient surface for engaging the glass sheet.

REFERENCES:
patent: 3418098 (1968-12-01), Kirkman
patent: 3753673 (1973-08-01), Pickard et al.
patent: 4670036 (1987-06-01), Enk et al.
patent: 4909819 (1990-03-01), McMaster et al.
patent: 5009694 (1991-04-01), Nishitani et al.

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