Apparatus for obtaining cambered and/or glazed glass sheets

Details Apparatus for obtaining cambered and/or glazed glass sheets Apparatus for obtaining cambered and/or glazed glass sheets

1991-09-24

1993-12-07

Woodard, Joye L.

Glass manufacturing

Glassworking or preform by or with reheating means

Planar sheet preform

65287, 65355, C03B 23023

Patent

active

052680169

ABSTRACT:
An apparatus for cambering glass sheets includes a reheating furnace for reheating a glass sheet, a sealed cambering station and a conveyor for transferring a heated glass sheet from the furnace to the cambering station. The cambering station includes a shaping upper member. The glass sheet therein is raised into engagement with the upper member, for example by gas pressure, in order to camber the glass sheet. Hot gas ducts surrounding the upper member blow hot gas onto the upper member in such a way as to increased the temperature thereof to a temperature higher than that of the glass sheet when the glass sheet enters the cambering station. Therefore, the glass sheet can be introduced into the cambering station at a relatively low temperature and heated to a temperature high enough for cambering only when in contact with the upper member. The cambered glass sheet can then be discharged to a cooling station.

REFERENCES:
patent: 2969613 (1961-01-01), Lambert et al.
patent: 3778244 (1973-12-01), Nedelec et al.
patent: 4764196 (1988-08-01), Boutier et al.
patent: 4775402 (1988-10-01), Letemps et al.
patent: 4802903 (1989-02-01), Kuster et al.
patent: 4813993 (1989-03-01), Letemps et al.
patent: 4865638 (1989-09-01), Kudo
patent: 4902331 (1990-07-01), Vanaochen et al.

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