Electrical supervisory circuit arrangements

Details Electrical supervisory circuit arrangements Electrical supervisory circuit arrangements

1974-07-10

1976-03-02

Reynolds, Wm. Carter

Textiles: knitting

Stopping

66163, 318373, 340267R, 340259, D04B 3514, D04B 3518

Patent

active

039409546

ABSTRACT:
An electrical supervisory circuit arrangement, as for detecting faults such as yarn breakage in a circular knitting machine, comprises a number of channels each responsive to a particular type of fault signal in the machine. Each channel comprises a bistable transistor circuit which is switched in response to the particular fault condition to be detected and, when so switched, energises a warning light. In addition, all the bistable circuits are connected in common to an output transistor which is thus switched when any of the bistable circuits detects a fault. The output transistor controls two relays, one of which disconnects the forward-current supply to the machine and the other of which temporarily provides a reverse-current supply for braking the motor.

REFERENCES:
patent: 3370286 (1968-02-01), Buss
patent: 3388255 (1968-06-01), May
patent: 3496739 (1970-02-01), Motin et al.
patent: 3529444 (1970-09-01), Romoli
patent: 3602727 (1971-08-01), Schwalm
patent: 3659437 (1972-05-01), McArthur et al.
patent: 3792329 (1974-02-01), Kuhnlein

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