Method of sensing abnormality of weft detecting device in loom

Details Method of sensing abnormality of weft detecting device in loom Method of sensing abnormality of weft detecting device in loom

1980-10-31

1982-12-07

Jaudon, Henry

Textiles: weaving

Stopping

Weft

139353, 139336, 66163, D03D 5134

Patent

active

043621902

ABSTRACT:
Disclosed is a method of sensing an abnormality in a weft detecting device which is employed in a loom in order to detect whether a weft is present in a predetermined interval corresponding to a set crank angle range within one revolution of the crank. When the weft detecting device generates a signal in the predetermined crank angle range excluding the weft detection angle range, the signal is regarded as an abnormal signal. The abnormal signal is processed by circuitry to detect the abnormality in the weft detecting device. Thus, when it is impossible to detect a weft insertion error because of some abnormality in the weft detecting device, the presence of the abnormal signal is utilized to issue an alarm or to stop the operation of the loom.

REFERENCES:
patent: 3608590 (1971-09-01), Hohener
patent: 3863241 (1975-01-01), Kamiyamaguchi et al.
patent: 4023599 (1977-05-01), Zeleny
patent: 4051871 (1977-10-01), Vella
patent: 4178590 (1979-12-01), Weidmann
patent: 4295499 (1981-10-01), Suzuki et al.

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