Glass manufacturing – Processes – With measuring – sensing – inspecting – indicating – or testing
Patent
1984-01-20
1985-05-07
Lindsay, Robert
Glass manufacturing
Processes
With measuring, sensing, inspecting, indicating, or testing
65162, 65337, 65346, 65356, 65DIG13, 373 40, 373 41, C03B 502
Patent
active
045156140
ABSTRACT:
A conditioning section of a forehearth is disclosed with sidewall electrodes for Joule effect heating of glass positioned and connected to confine the current and Joule effect heating separately to the side portions of the molten glass flow path therein. Separate circuits, controls, temperature sensors and temperature set point control means are provided for the sidewall electrodes on each side. Glass temperature across the flow path is controlled and can be adjusted by separately controlling the flow of Joule effect current along each side of the flow path through manual or automatic, thermally actuated, controls for each side.
REFERENCES:
patent: 1928288 (1933-09-01), Henry
patent: 3198619 (1965-08-01), Nuzum
patent: 3954433 (1976-05-01), Holler
patent: 4323383 (1982-04-01), Sims
patent: 4389725 (1983-06-01), Barkhau et al.
Barkhau Marvin L.
Perry Philip D.
Poundstone Donald H.
Sherman James E.
Lindsay Robert
Nelson John R.
Owens--Illinois, Inc.
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