Switching on device on an apparatus for intermittently taking of

Details Switching on device on an apparatus for intermittently taking of Switching on device on an apparatus for intermittently taking of

1979-12-28

1981-12-01

Jaudon, Henry

Textiles: weaving

Weft manipulation

Weaving with stationary weft supply

139452, D03D 4734

Patent

active

043031072

ABSTRACT:
A device for holding the weft yarn outside of a pair of takeoff rolls after there has been a filling break or upon starting up of the loom. The takeoff rolls in normal operation withdraw a measured length of yarn from a supply package and feed the yarn to a storage device such as a suction tube. The rapier on its filling stroke withdraws the measured length of yarn from the storage tube on each stroke of filling insertion. As the rapier approaches the end of the stroke, the takeoff rolls 4 and 5 separate so that the final portion of the yarn of each filling is taken directly from the supply package. After a filling break or upon starting up of the loom, in order to insure that the length of the first weft yarn is proper, a movable guide arm 14 holds the yarn outside of the takeoff rolls 4 and 5 and the yarn is manually withdrawn from the supply package. At the end of the first stroke of the rapier the rolls 4 and 5 are separated. At this time the pivotal arm automatically brings the yarn between the takeoff rolls and then the takeoff rolls assume their normal operation of feeding a measured length of yarn to the storage device on each subsequent stroke of the rapier.

REFERENCES:
patent: 3561498 (1971-02-01), Tiernan
patent: 4074730 (1978-02-01), Mizuno
patent: 4102362 (1978-07-01), Tojo

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