C - Chemistry – Metallurgy – 03 – B
Patent
C - Chemistry, Metallurgy
03
B
307/5
C03B 5/02 (2006.01)
Patent
CA 1203827
ABSTRACT OF THE DISCLOSURE Apparatus for heating molten glass flowing through a conditioning section of a forehearth has pairs of electrodes extending through the sidewalls of the forehearth with their ends terminating adjacent the sidewalls and a circuit connect- ed to the electrode pairs and being such as to cause joule effect heating of the glass adjacent the sidewalls of the forehearth, with a source of electrical current connected to the circuit. A first temperature sensor within the fore- hearth at the center line thereof within the conditioning section adjacent an end thereof has a thermocouple immersed in the glass and a second temperature sensor extending into the forehearth adjacent one of the sidewalls thereof in align- ment with the first sensor, a settable, temperature override circuit connected to the circuit means. The second tem- perature sensor is connected to a settable temperature over- ride circuit for adjusting the current to the electrodes to bring the sidewall temperature to the selected set point of the override circuit.
427204
Barkhau Marvin L.
Perry Philip D.
Pimm Roland F.
G. Ronald Bell & Associates
Owens-Illinois Inc.
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