Apparatus for providing false twist to moving yarn

Details Apparatus for providing false twist to moving yarn Apparatus for providing false twist to moving yarn

1980-05-16

1981-10-27

Watkins, Donald

Textiles: spinning, twisting, and twining

Apparatus and processes

Twist setting

57336, D02G 106, D01H 792

Patent

active

042965985

ABSTRACT:
Apparatus including two endless aprons, one operating inside the other, the top strands thereof forming a contact zone therebetween. The aprons are angled with respect to each other preferably between 130 and 150 degrees. The yarn applied through the zone is twisted upstream of the zone with respect to a variably adjustable, insertion length stop. The yarn can be heat treated, if desired, upstream or downstream of the contact zone. Alternatively, two or more yarn strands also can be false-twisted in parallel paths through the zone and joined thereafter. By changing the length of insertion of one strand with respect to the other, alternated twist is provided to the combined yarn.

REFERENCES:
patent: 3228181 (1966-01-01), Paterson
patent: 3659408 (1972-05-01), Burr
patent: 4047373 (1977-09-01), Takai
patent: 4144700 (1979-03-01), Takai et al.
patent: 4144701 (1979-03-01), Takai et al.
patent: 4218870 (1980-08-01), King
patent: 4248038 (1981-02-01), Takai

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