Rotary twister element for frictional open-end spinning

Details Rotary twister element for frictional open-end spinning Rotary twister element for frictional open-end spinning

1987-02-03

1987-11-10

Watkins, Donald

Textiles: spinning, twisting, and twining

Apparatus and processes

Open end spinning

D01H 7892, D01H 7898

Patent

active

047048590

ABSTRACT:
Rotary twister element suitable to keep under tension the fibres during the twisting operation in a frictional open-end spinning process, constituted by a solid, hollow, reduced-thickness element with perforated skirt, which is internally provided with a suction duct defining a longitudinal slot, the edge of which constitutes the thread formation line, is suitably inclined relatively to the general trix of the same solid, hollow element, as a function of the direction of rotation of the solid element, and of the direction of thread extraction. Also a screen is provided for the air dragged by the rotation of the solid element, which may have a cylindrical shape, a cone frustum shape, or the shape of any other revolution solid.

REFERENCES:
patent: 4168601 (1979-09-01), Didek et al.
patent: 4222222 (1980-09-01), Didek et al.
patent: 4537312 (1986-03-01), Brockmanns et al.
patent: 4660366 (1987-04-01), Barrett et al.
patent: 4660371 (1987-04-01), Stalder

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