Open end spun slub yarn method and apparatus

Details Open end spun slub yarn method and apparatus Open end spun slub yarn method and apparatus

1980-03-05

1982-11-30

Watkins, Donald

Textiles: spinning, twisting, and twining

Apparatus and processes

Open end spinning

57404, 57408, 57413, D01H 112, D01H 7882, D01H 7892, D02G 334

Patent

active

043610072

ABSTRACT:
The invention relates to a method of and an apparatus for open-end spinning a novelty yarn (especially slub yarns), and the yarn so produced. A sliver is fed to the fiber separating device of an open-end spinning apparatus to form distinct fibers, the fibers are air transported in a fiber flow path to the twisting device, controlled formation of effects (particularly slubs) is effected during air transport of the distinct fibers in their path, the formed effects are intermittently passed to the twisting device (e.g. pseudo-randomly), the fibers fed to the twisting device are twisted into a continuous strand of effect yarn (particularly slub yarn), and the continuous strand of effect yarn is taken up. The controlled formation of effects is preferably accomplished by introducing a needle into the fiber flow path in the transport section, the fibers collecting on the needle. The fibers are passed to the twisting device by withdrawing the needle from the fiber flow. Virtually any type of conventional open-end spinning apparatus may be modified to practice the slub yarn spinning according to the invention.

REFERENCES:
patent: 3908349 (1975-09-01), Urifu et al.
patent: 3956876 (1976-05-01), Artzt et al.
patent: 3968636 (1976-07-01), Junek et al.
patent: 4109454 (1978-08-01), Fehrer
patent: 4144702 (1979-03-01), Pittman
patent: 4160359 (1979-07-01), Frentress
patent: 4201037 (1980-05-01), Artzt et al.
German Publication 2657096, Messing, Pub. Date 6/22/78.
German Printed Application, Rohrberg, 2808589, Aug. 30, 1979.

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