Pneumatic yarn control arrangement for open-end friction spinnin

Details Pneumatic yarn control arrangement for open-end friction spinnin Pneumatic yarn control arrangement for open-end friction spinnin

1986-02-12

1987-05-05

Watkins, Donald

Textiles: spinning, twisting, and twining

Apparatus and processes

Open end spinning

D01H 1135, D01H 7898

Patent

active

046621687

ABSTRACT:
The invention relates to an arrangement for open-end friction spinning having two adjacently arranged rollers driven in the same rotational direction and forming a wedge-shaped gap in which the yarn formation takes place. An air supply device is provided having at least one compressed air jet extending into the plane of the wedge-shaped gap and being directed upon the yarn for purposes of favorably influencing the contact force of the yarn against the rollers, and thereby the friction effect and/or the position of the yarn. In especially preferred embodiments, a plurality of compressed air jets are disposed to blow air against the yarn at positions downstream of the fiber feed in the yarn withdrawal direction. A suction device and a further compressed air jet are provided at the side of the wedge-shaped gap opposite the fiber feed opening in certain embodiments.

REFERENCES:
patent: 4281507 (1981-08-01), Didek et al.
patent: 4483136 (1984-11-01), Stahlecker et al.

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