Method and apparatus for driving and piecing-up open-end spinnin

Details Method and apparatus for driving and piecing-up open-end spinnin Method and apparatus for driving and piecing-up open-end spinnin

1975-01-06

1979-08-07

Gorenstein, Charles

Textiles: spinning, twisting, and twining

Apparatus and processes

Driving

57263, 57 5889, 57100, 57105, D01H 130, D01H 1500

Patent

active

041633598

ABSTRACT:
The present invention relates to a method and an apparatus for changing the ratio of the yarn taking-up speed to the number of revolutions of the rotor at the time of yarn piecing and normal spinning. According to the present invention, the ratio of the yarn taking-out speed to the number of revolutions of the rotor at the time of yarn piecing has a different value from that employed at the normal spinning, while the ratio of the yarn taking-out speed to the sliver supply speed is made constant at the time of yarn piecing as at the normal spinning, in a manner such that the spun yarn has fewer number of twists at the normal spinning than that at the time of yarn piecing. The rotor speed may also be simultaneously reduced as the speeds of the take-out and sliver supply are reduced.

REFERENCES:
patent: 3704579 (1972-12-01), Tooka et al.
patent: 3780513 (1973-12-01), Wanatabe et al.
patent: 3810352 (1974-05-01), Miyazaki et al.

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