Thread monitoring apparatus for textile machines

Details Thread monitoring apparatus for textile machines Thread monitoring apparatus for textile machines

1980-08-28

1982-12-28

Kee Chi, James

Textiles: weaving

Stopping

Weft

66163, 250561, 250571, 340677, D03D 5134

Patent

active

043656544

ABSTRACT:
A weft or filling thread monitor comprises a wire-shaped feeler pin which is pivoted by a thread, against the action of spring force, in the region of a measuring field. The measuring field encompasses a light-emitting diode and a photocell and enables generating, in a contactless manner by the feeler pin, an electrical control signal which is related to the monitored thread. This control signal is infed to a first input of a gate switching stage, at the second input of which there is applied a machine-controlled reference signal. In the absence of the control signal there appears at the output a work signal suitable for shutdown of the machine. Due to these measures such thread monitoring apparatus, working with contactless signal triggering, can fulfil all of the requirements placed thereon.

REFERENCES:
patent: 3802468 (1974-04-01), Meyer et al.
patent: 3863241 (1975-01-01), Kamiyamaguchi et al.
patent: 4095621 (1978-06-01), Kakinaka
patent: 4267554 (1981-05-01), Loepfe et al.

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