Textiles: spinning – twisting – and twining – Apparatus and processes – Piecing up
Patent
1984-11-26
1986-10-21
Watkins, Donald
Textiles: spinning, twisting, and twining
Apparatus and processes
Piecing up
57408, 57412, D01H 1500, D01H 7892
Patent
active
046177906
ABSTRACT:
In the case of an open-end friction spinning machine having a plurality of spinning units, each having a feeding and opening device with a feeding roller for the feeding of a sliver and with an opening roller for the opening of the fed sliver into individual fibers to be fed to a wedge-shaped gap, an automatic piecing process is provided. In the case of this piecing process, an already spun yarn end is returned into the wedge-shaped gap and, by means of a piecing, is pieced to newly fed fibers. It is provided that the quantity of fibers to be pieced by means of the returned yarn end is for each piecing process adjusted to a constant value by the fact that for each piecing process a sliver end is fed to the opening roller that has the same characteristics.
REFERENCES:
patent: 4055942 (1977-11-01), Stahlecker
patent: 4059946 (1977-11-01), Boettcher et al.
patent: 4102116 (1978-07-01), Derichs et al.
patent: 4150530 (1979-04-01), Derichs
patent: 4156341 (1979-05-01), Raasch
patent: 4367623 (1983-01-01), Parker et al.
patent: 4524578 (1985-06-01), Raasch et al.
Stahlecker Fritz
Stahlecker Hans
Watkins Donald
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