Method and system to automatically lift the curtains of the exit

Details Method and system to automatically lift the curtains of the exit Method and system to automatically lift the curtains of the exit

1996-01-25

1997-09-16

Griffin, Steven P.

Glass manufacturing

Processes

With measuring, sensing, inspecting, indicating, or testing

65 991, 65158, 65160, 36447301, C03B 1802

Patent

active

056675496

ABSTRACT:
A system and method is disclosed to automatically lift the curtains of the exit hood of a machine for the production of float flat glass by the floating process. A light beam emitter is provided for a light beam which strikes the surface of the glass ribbon, being formed, and is reflected by that surface. A light beam receptor receives the light beam reflected by the surface of the glass ribbon and provides a signal representative of the absence or deviation of the reflected light beam should there be a break in the glass ribbon. A controller receives the signal representative of the absence or deviation of the reflected light beam, and provides operating signals to the actuators of the i) curtain lifting mechanism, ii) reheating system, iii) glass edge follower mechanism and iv) alarm of the glass ribbon forming machine. These signals automatically a) lift the curtains to avoid clogging of the broken glass ribbon, b) operate the reheating system of the exit hood, c) retract the glass edge follower mechanism, and d) trigger the to allow for a rapid restoration of the glass ribbon forming process.

REFERENCES:
patent: 2621808 (1952-12-01), Blakeney
patent: 2625658 (1953-01-01), Robinson
patent: 3251667 (1966-05-01), Touvay
patent: 4585343 (1986-04-01), Schave et al.
patent: 4665392 (1987-05-01), Koontz
COMAX Laser Level Gauge Product Data LL 01 Information Sheet, Courser Inc., Elmira, New York, 6 pages Dec. 1980.

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