Automatic control apparatus for weaving machine

Textiles: weaving – Stopping – Warp

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Details

139336, 1393701, 250561, D03D 5128

Patent

active

039890686

ABSTRACT:
An automatic control apparatus for a weaving machine is disclosed, which includes a photoelectric detecting scheme provided at a reed of the machine such that a light beam thereof penetrates the shed of the warp sheet and detects improperly shedded warp. A timing switch is coupled to a crank shaft for generating a timing signal at a predetermined angle of the crank shaft, and delay circuits are provided for delaying the timing signal so as to generate a gate control signal. The leading and/or trailing edges of the gate control signal are defined by the delay circuits and a gate circuit is included which is responsive to the gate control signal for allowing the warp detected signal to be gated. A wave shaping circuit receives the warp detected signal as gated and provides wave shaped signals thereof. A charge storing capacitor is connected to receive wave shaped signal, said the charge voltage thereof is threshold detected to provide a control signal. A control circuit is provided which is responsive to the gate control signal for stopping the weaving machine.

REFERENCES:
patent: 3379225 (1968-04-01), Ichimi et al.
patent: 3608590 (1971-09-01), Hohener
patent: 3697732 (1972-10-01), Duss
patent: 3818236 (1974-06-01), Lind et al.
patent: 3824401 (1974-07-01), Suzuki
patent: 3863241 (1975-01-01), Kamiyamaguchi et al.

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