Ribbon edge detector and system for metering flow of molten glas

Details Ribbon edge detector and system for metering flow of molten glas Ribbon edge detector and system for metering flow of molten glas

1980-11-26

1982-06-29

Kellogg, Arthur D.

Glass manufacturing

Processes

With measuring, sensing, inspecting, indicating, or testing

65 995, 65164, 65158, 651824, 651825, C03B 1810

Patent

active

043370764

ABSTRACT:
A pair of glass ribbon edge detectors each have a power source connected to a carbon probe suspended over the molten metal bath of a glass forming chamber and to the molten metal bath to form a pair of capacitors. The voltage output of each capacitor has a first value when the probe is over the molten metal bath, a second value when the probe is over the glass ribbon and a third value when the probe is over a portion of the molten metal bath and a portion of the glass ribbon edge. Displacement and direction of displacement of each probe is used to determine glass ribbon width.
A tweel for metering glass onto the molten metal bath has linear displacement gauges mounted at each side thereof and directly connected to the tweel so as to monitor displacement of the tweel to determine the flow of molten glass into the forming chamber. Movement of the tweel in response to the capacitors' output controls the flow of molten glass to control the ribbon width.

REFERENCES:
patent: 3438518 (1969-04-01), Aerts
patent: 3482954 (1969-12-01), Yuen
patent: 3500548 (1970-03-01), Mitsuno
patent: 3528795 (1970-09-01), Swillinger
patent: 3805072 (1974-04-01), Gaernes et al.
patent: 3805073 (1974-04-01), Jayachandra et al.
patent: 3977858 (1976-08-01), Taguchi
patent: 4004900 (1977-01-01), Staahl, Jr. et al.
patent: 4008062 (1977-02-01), Nishikori et al.

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