Device for monitoring the weft thread travel on an air jet weavi

Details Device for monitoring the weft thread travel on an air jet weavi Device for monitoring the weft thread travel on an air jet weavi

1981-09-14

1983-11-15

Kee Chi, James

Textiles: weaving

Stopping

Weft

139435, 250561, 250571, 340677, D03D 5134

Patent

active

044150083

ABSTRACT:
An electronic device for monitoring the insertion or travel of the filling or weft thread on an air jet weaving machine or loom which comprises at least one air jet arranged at the picking side of the machine, and a lathe or sley beam with thereon fixed lamellae forming a reed. The device comprises a tactile weft thread travel sensor arranged at the weaving machine upstream of said air jet, a start pulse generator controlled by the weaving machine, an optoelectrical sensor located near the end of the reed adjacent the weft receiving means, and electronic circuitry controlled by said start pulse generator and optoelectrical sensor for producing an activating signal defining the time interval during which the weft thread travel is monitored.

REFERENCES:
patent: 3633706 (1972-01-01), Kennedy
patent: 3908710 (1975-09-01), Van Mullekom
patent: 4178971 (1979-12-01), Malasek et al.
patent: 4215728 (1980-08-01), Weidman et al.

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