False twisting apparatus

Details False twisting apparatus False twisting apparatus

1981-06-12

1983-11-15

Petrakes, John

Textiles: spinning, twisting, and twining

Apparatus and processes

False twist device

57348, D02G 108

Patent

active

044148038

ABSTRACT:
A yarn false twisting apparatus is disclosed which includes a pair of twist imparting discs, with the discs being mounted for rotation so that portions of the disc surfaces are disposed in opposing, substantially non-contacting relationship and define a twisting zone therebetween. The discs rotate in a common rotational direction, and a yarn is continuously advanced through the twisting zone in a direction parallel to a line extending perpendicularly between the axes of rotation of the two discs. In one embodiment, one of the discs is relatively thin and flexible, and there is further provided a pressure applying member which acts to locally bias the flexible disc toward the other disc at the twisting zone. Preferably, the two discs are mounted for movement toward and away from each other in a direction parallel to a line extending perpendicularly between the axes of rotation, and the pressure applying member is mounted for movement in a direction perpendicular to the direction of relative movement between the two discs, to thereby permit the ratio of twist insertion to yarn speed to be adjusted.

REFERENCES:
patent: 2863280 (1958-12-01), Ubbelohde
patent: 3156084 (1964-11-01), Van Dijk et al.
patent: 3225533 (1965-12-01), Henshaw
patent: 3373554 (1968-03-01), Raschle
patent: 3394540 (1968-07-01), Bentov
patent: 3488941 (1970-01-01), Asaka
patent: 3495391 (1970-02-01), Njo
patent: 4050229 (1977-09-01), Hayahusa
patent: 4145871 (1979-03-01), Iwata et al.
patent: 4149366 (1979-04-01), Bass et al.
patent: 4339915 (1982-07-01), Dammann et al.

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