Process and device for joining a thread in an open-end spinning

Details Process and device for joining a thread in an open-end spinning Process and device for joining a thread in an open-end spinning

1983-01-24

1987-02-24

Petrakes, John

Textiles: spinning, twisting, and twining

Apparatus and processes

Piecing up

D01H 1502

Patent

active

046447423

ABSTRACT:
When a thread is joined in an open-end spinning device, the thread is fed back into the open-end spinning device as a result of reverse rotation of a bobbin and a pair of auxiliary rollers. After the feedback has ended, the thread is released by the pair of auxiliary rollers and, until normal spinning draw-off is started, the thread is subjected to an auxiliary draw-off at a greater distance from the open-end spinning device than the normal spinning draw-off. This auxiliary draw-off can be carried out exclusively by means of the bobbin or also independently of it. An auxiliary draw-off device serves for generating this drawing force and is located at a greater distance from the open-end spinning device than the pair of draw-off rollers.

REFERENCES:
patent: 3355868 (1967-12-01), Civrny et al.
patent: 3680300 (1972-08-01), Landwehrkamp
patent: 3695017 (1972-10-01), Hori et al.
patent: 3810352 (1974-05-01), Miyazaki et al.
patent: 3938306 (1976-02-01), Bous
patent: 4175370 (1979-11-01), Stahlecker
patent: 4327546 (1982-05-01), Derichs et al.

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