Glass manufacturing – Processes – Reshaping or surface deformation of glass preform
Patent
1986-12-29
1987-12-08
Kellogg, Arthur
Glass manufacturing
Processes
Reshaping or surface deformation of glass preform
65104, 65273, C03B 2303
Patent
active
047116536
ABSTRACT:
A press bending apparatus includes a shaping station having an upper mold with a shaping surface having a generally concave downward elevational configuration and a lower mold with an apertured shaping surface complementing the shaping surface of the upper mold. A vacuum shuttle transfers heat softened glass sheets from a heating furnace to the shaping station where it deposits the glass sheets on the lower vacuum mold. The glass sheet is shaped between the molds. A rotating arrangement rotates the lower mold and the shaped glass sheet held thereagainst by vacuum from a first position wherein the shaping surface of the lower mold faces upward to a second position wherein the shaping surface of the lower mold faces downward. The shaped glass sheet is then deposited on a tempering ring. A rotating arrangement maintains vacuum in the lower mold as the mold rotates.
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Claassen George R.
Fecik Michael T.
Frank Robert G.
Schultz Stephen J.
Waterloo Thomas L.
Kellogg Arthur
PPG Industries Inc.
Siminerio Andrew C.
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