Method and apparatus for a controlled pneumatic removal of a fau

Details Method and apparatus for a controlled pneumatic removal of a fau Method and apparatus for a controlled pneumatic removal of a fau

1996-06-10

1998-05-05

Falik, Andy

Textiles: weaving

Weft manipulation

Means for withdrawing defective weft

D03D 5134

Patent

active

057462569

ABSTRACT:
A method and apparatus remove a faulty weft thread from a beat-up edge or cloth fell by pulling its leading end with a pneumatic thread removal device, which adaptably takes into account the thread characteristics and particularly the twist of the thread. The method maintains the twist of the thread by generating a simultaneously sucking and rotating airflow in the thread removal device, wherein the direction of rotation of the flow is controlled to coincide with the direction of the twist of the weft thread. The pneumatic thread removal device includes an injector nozzle with at least two gas flow inlet ports oriented to respectively cause oppositely rotating suction flows through the nozzle, and a controllable throttle valve to selectively direct a gas flow to the inlet ports.

REFERENCES:
patent: 4781221 (1988-11-01), Onishi et al.
patent: 5046532 (1991-09-01), Kano et al.
patent: 5050647 (1991-09-01), Baeck et al.
patent: 5226458 (1993-07-01), Bamelis
patent: 5297592 (1994-03-01), Takegawa

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