Glass manufacturing – Processes – Glass preform treating
Patent
1977-03-01
1977-12-27
Kellogg, Arthur D.
Glass manufacturing
Processes
Glass preform treating
65116, C03B 2700
Patent
active
040652840
ABSTRACT:
Glass sheets of unequal thickness are tempered sequentially on one tempering line by employing a lightweight heating furnace within which each glass sheet may be brought up to a thermal condition suitable for tempering by a two-stage heating cycle which differs from one glass thickness to another. Also disclosed are means for temporarily adapting a conventional tempering line for carrying out such a process.
REFERENCES:
patent: 2198622 (1940-04-01), Forbes
patent: 3762905 (1973-10-01), Artama et al.
patent: 3776709 (1973-12-01), Melling et al.
Carr Thomas W.
Mang Raymond L.
Kellogg Arthur D.
Millman Dennis G.
PPG Industries Inc.
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