Yarn piecing arrangement for an open-end friction spinning machi

Details Yarn piecing arrangement for an open-end friction spinning machi Yarn piecing arrangement for an open-end friction spinning machi

1984-05-17

1985-12-24

Watkins, Donald

Textiles: spinning, twisting, and twining

Apparatus and processes

Piecing up

57 22, D01H 1502

Patent

active

045597740

ABSTRACT:
A yarn piecing arrangement is disclosed for an open end friction spinning machine of the type having two friction rollers rotatably drivable in the same direction and disposed adjacent one another to form a yarn forming wedge-shaped gap therebetween, fiber supplying means for supplying individual fibers to the wedge-shaped gap, yarn withdrawal means for withdrawing spun yarn in the direction of the wedge-shaped gap, and suction device means for applying suction forces to hold the spinning yarn in the wedge-shaped gap. In order to facilitate fine control of the yarn piecing process, the friction rollers are stopped before the spun yarn end section is returned to the wedge-shaped gap. Once the yarn end section is positioned at the wedge-shaped gap, the rollers are restarted and yarn piecing is carried out.

REFERENCES:
patent: 4202163 (1980-05-01), Turk et al.
patent: 4327545 (1982-05-01), Fehrer
patent: 4367623 (1983-01-01), Parker et al.
patent: 4392343 (1983-07-01), Parker et al.

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