Textiles: spinning – twisting – and twining – Apparatus and processes – Monitor and control
Patent
1997-12-19
1999-09-14
Stryjewski, William
Textiles: spinning, twisting, and twining
Apparatus and processes
Monitor and control
57408, 57412, D01H 746
Patent
active
059504110
ABSTRACT:
A device for transmitting yarn monitor signals to the control circuit of an open-end spinning station for determining whether a yarn spun by the spinning station is being drawn off or whether the yarn travel has been interrupted so that, in case of a yarn break, the infeed of the sliver into the spinning station is interrupted. Defects in electronic components in the circuit of the yarn monitor or in the sensor can result in a continuous yarn traveling signal to the control circuit of the spinning station despite a yarn break. The present invention therefore provides a receiver (5') for contactless receiving the yarn signal of the monitor and an oscillator (16) which can be actuated and deactuated based on the receiver output signal. An integrated circuit (22) is connected between the receiver and the oscillator (16) for generating and maintaining an actuating signal to the oscillator for generating oscillations thereby, and an alternating-voltage coupling (20) is connected between the oscillator and the control circuit of the spinning station for transmitting only an alternating voltage.
REFERENCES:
patent: 4056926 (1977-11-01), Stuber
patent: 4195345 (1980-03-01), Artzt et al.
patent: 4491831 (1985-01-01), Sakai et al.
patent: 4716718 (1988-01-01), Gobbels et al.
Stryjewski William
W. Schlafhorst AG & Co.
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