Textiles: spinning – twisting – and twining – Apparatus and processes – Piecing up
Patent
1986-10-16
1988-08-16
Levy, Stuart S.
Textiles: spinning, twisting, and twining
Apparatus and processes
Piecing up
57 86, D01H 1318, D01H 1500
Patent
active
047634677
ABSTRACT:
Controlling the stop of the feed of roving in a spinning machine in which yarn is wound on spindles through travelers rotating on rings and in which a stop motion is actuated to stop the feed of the roving to drafting rolls in response to detecting a yarn break and is subsequently deactuated to permit roving feed during a yarn break repair operation. The stop motion includes an arcuate stop member rotatably mounted on one of the drafting rolls for rotation into disposition between opposing rolls to separate the rolls and stop roving feed, with the stop member having a projecting cam engaging in a recess in a slide member that is manipulated by a spring and electromagnetic device to control manipulation of the stop member. Response of the stop motion to the detection of a yarn break is deactivated upon initiation of a yarn break repair operation and is maintained until the detection indicates that spinning has resumed for a predetermined length of time sufficient to indicate that the yarn break has been repaired, with the deactivating continuing in the event a yarn break has not been successfully repaired. The repair operation is repeated until successful or for a selected number of unsuccessful attempts, at which time a false simulation of resumption of spinning is given to reactivate response of the stop motion to the yarn break detection for deactuating the stop motion and to stop roving feed. Device for sensing whether a yarn break has been successfully repaired and the device for providing a false simulation are incorporated in an electronic circuit on the yarn break repair device, which circuit is connected through an optical transmission device to an electronic circuit on the spinning machine that includes the stop motion deactivating device.
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Igel Wolfgang
Meissner Werner
Nickolay Helmut
Schollhammer Richard
Hail III Joseph J.
Levy Stuart S.
Zinser Textilmaschinen GmbH
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