Textiles: spinning – twisting – and twining – Apparatus and processes – Web material
Patent
1976-10-04
1978-03-28
Queisser, Richard C.
Textiles: spinning, twisting, and twining
Apparatus and processes
Web material
57 5889, 57 78, 57156, D01H 112, D01H 132
Patent
active
040807754
ABSTRACT:
Process and apparatus for yarn piecing in an open end spinning assembly are provided. The individual steps of the yarn piecing process are controlled by a predetermined piecing program whose start is triggered as a function of the running up of a previously braked down spinning rotor, so that a yarn carried back into the spinning rotor will be applied in the spinning rotor to a fiber ring at a time during which the spinning rotor has only reached a revolutionary speed that is below the operating revolutionary speed thereof. In order to avoid imprecisions in the piecing process caused by delays and/or differences in the running up characteristics of the individual spinning rotor, one or more predetermined spinning rotor revolutionary speeds are established, and upon reaching the same, the yarn piecing process is initiated and controlled.
REFERENCES:
patent: 3760576 (1973-09-01), LeChatelier et al.
patent: 3877210 (1975-04-01), Seidl
patent: 3878671 (1975-04-01), Seidl et al.
patent: 3892062 (1975-07-01), Stahlecker et al.
patent: 3987610 (1976-10-01), Stahlecker et al.
Gorenstein Charles
Queisser Richard C.
Stahlecker Fritz
Stahlecker Hans
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