Textiles: spinning – twisting – and twining – Apparatus and processes – Elements
Patent
1975-05-16
1977-05-17
Petrakes, John
Textiles: spinning, twisting, and twining
Apparatus and processes
Elements
57 75, 57124, D01H 120, D01H 756
Patent
active
040233421
ABSTRACT:
A process and associated apparatus for controlling the rotational speed of a spinning or twisting ring in a spinning or twisting machine during four phases of operation. The first and second phases of operation correspond in time to the period during which the spindle of the machine associated with the ring goes from rest to a predetermined operating speed. The third and fourth phases of operation correspond in time to the period during which the spindle is returned from its operating speed back to its rest position. While the spindle is driven to its predetermined operating speed, the traveler rotates relative to the ring during the first phase of operation causing the ring to accelerate and rotate in synchronism with the traveler during the second phase of operation. During this second phase both the traveler and ring accelerate. Then while the spindle is driven back to its rest position the traveler and ring continue to rotate in synchronism during the third phase of operation, with the ring being decelerated such that the tension in the thread is retained at an adequate level to prevent rupture thereof. Finally during the fourth phase of operation the traveler rotates relative to the ring with the ring decelerating faster than the traveler.
REFERENCES:
patent: 1717642 (1929-06-01), Wentworth
patent: 3324643 (1967-06-01), Kluttz
patent: 3494120 (1970-02-01), Chilpan et al.
patent: 3543503 (1970-12-01), Watabe et al.
patent: 3785140 (1974-01-01), Muller
patent: 3851448 (1974-12-01), Sano et al.
Greigg Edwin E.
Petrakes John
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