Open-end friction spinning

Details Open-end friction spinning Open-end friction spinning

1985-08-02

1986-05-27

Watkins, Donald

Textiles: spinning, twisting, and twining

Apparatus and processes

Open end spinning

57334, D01H 1135, D01H 7882

Patent

active

045907560

ABSTRACT:
An open-end friction spinning machine is provided having two adjacently arranged rollers that are drivable in the same rotational direction and form a wedge-shaped gap serving as a yarn formation zone. A fiber feeding device forms a scatter zone in which fibers scattered over a limited area of the axial length of the rollers are fed to the wedge-shaped gap. In the scatter zone, the rollers have sections with surfaces resulting in different frictional effects. Additionally, the sections of the two rollers that are opposite one another have different frictional effects. This difference in frictional effects between oppositely disposed roller sections can be used to create forces which either maintain forming yarn in the wedge-shaped gap during a yarn forming operation, or displace formed yarn from the wedge-shaped gap after a yarn forming operation.

REFERENCES:
patent: 4168601 (1979-09-01), Didek et al.
patent: 4202163 (1980-05-01), Turk et al.
patent: 4380892 (1983-04-01), Parker et al.
patent: 4420928 (1983-12-01), Fehrer
patent: 4522022 (1985-06-01), Parker et al.
patent: 4537021 (1985-08-01), Parker

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