Method and apparatus for detecting the faulty working of spinnin

Details Method and apparatus for detecting the faulty working of spinnin Method and apparatus for detecting the faulty working of spinnin

1977-02-11

1980-03-25

Smith, Jerry

Boots, shoes, and leggings

57 81, 57264, 57362, 73160, 364552, D01H 1322, G06F 1546

Patent

active

041953452

ABSTRACT:
A method and apparatus for detecting the faulty working of spinning units of an open-end spinning machine by monitoring the faults in yarn as it is fed from the spinning machine. An electrical signal is produced by a sensor indicating faults appearing in the yarn. Another signal of predetermined frequency corresponding to the speed of delivery of the yarn from the spinning machines is generated. The electrical signal produced by the sensor is electrically multiplied by the signal of predetermined frequency for producing a differential signal. This differential signal is filtered, shaped and integrated and subsequently compared with a preset threshold value for producing a signal indicating when the occurrence of faults exceed a predetermined threshold. This signal can be used for stopping the spinning unit.

REFERENCES:
patent: 4007457 (1977-02-01), Aeppli
patent: 4051722 (1977-10-01), Feller
patent: 4056926 (1977-11-01), Stuber
patent: 4058962 (1977-11-01), Spescha et al.
patent: 4060965 (1977-12-01), Schwartz

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