Glass forehearth

Details Glass forehearth Glass forehearth

1983-12-07

1985-11-12

Kellogg, Arthur

Glass manufacturing

Glass conditioning channel section

65337, 65356, C03B 5235

Patent

active

045525790

ABSTRACT:
A forehearth for the conveyance of molten glass has at least one cooling zone which includes a trough and a roof over the trough. A pair of spaced projections extend downwardly from the roof to define in the space below the roof a central channel over the central portion of the stream of molten glass and side channels over respective side portions of the stream of glass. The roof has at least one area of reduced thickness in the portion over the central channel. An enclosed upper cooling channel extends longitudinally of the forehearth over the area of reduced thickness and has an inlet and an outlet spaced longitudinally from the inlet. Heating means are provided for applying heat to each side portion of the stream of glass.

REFERENCES:
patent: 1893061 (1933-01-01), Peiler
patent: 2282554 (1942-05-01), Barker
patent: 3582310 (1971-06-01), Avery et al.
patent: 3999972 (1976-12-01), Brax
patent: 4294603 (1981-10-01), Winzer et al.
patent: 4494974 (1985-01-01), Vilk et al.

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