Textiles: spinning – twisting – and twining – Apparatus and processes – Open end spinning
Patent
1981-11-24
1983-08-23
Watkins, Donald
Textiles: spinning, twisting, and twining
Apparatus and processes
Open end spinning
D01H 1135
Patent
active
043996507
ABSTRACT:
This friction spinner includes an opening roller system for feeding fibers to and through a feed duct to a throat formed between the adjacent peripheral surfaces of two parallel drum rollers rotating in the same direction, one roller perforate so that air may be drawn thereinto through its peripheral surface, and the other imperforate, and rotating such that the imperforate roller rotates out of the throat and the perforate roller rotates into the throat when viewed from above. Yarn formed at the throat, by frictional contact of the fed fibers with the rotating surfaces, is withdrawn along the throat. The fiber feed duct is arranged to feed the fibers in an airstream having a direction inclined to the yarn axis of yarn being formed at the throat and providing a component of fiber movement opposite to the direction of yarn withdrawal, which is to say transverse thereto. An additional airstream is provided across the duct close to its opening within the throat substantially parallel to the direction of the yarn axis as it is formed to turn the fibers from the direction of inclination of the duct to a direction more nearly parallel to the yarn axis as they approach the duct mouth opening.
REFERENCES:
patent: 4107909 (1978-08-01), Fehrer et al.
patent: 4109454 (1978-08-01), Fehrer et al.
patent: 4130983 (1978-12-01), Dammann et al.
patent: 4148177 (1979-04-01), Fehrer
patent: 4168601 (1979-09-01), Didek et al.
patent: 4202163 (1980-05-01), Turk et al.
patent: 4249368 (1981-02-01), Fehrer
Farnhill William M.
Parker Alan
Feldman Donald H.
Watkins Donald
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