D - Textiles – Paper – 01 – H
Patent
D - Textiles, Paper
01
H
118/10
D01H 1/00 (2006.01) D01H 1/32 (2006.01) D01H 7/00 (2006.01) D01H 7/56 (2006.01) D01H 13/10 (2006.01)
Patent
CA 1121670
ROTATING RING YARN SPINNING OR TWISTING APPARATUS AND METHOD Abstract of the Disclosure An air-bearing supported, freely rotated spinning or twisting ring carrying a yarn traveler having radial and cylin- drical air-bearings and an annular plenum cavity in at least one of the cylindrical air-bearing surfaces for generally open, unencumbered and continuous admission of pressurized air to the air-bearings. The air-bearings communicate through an annularly disposed mutually connecting enlarged air space. Time delay means is provided for reducing the air supply to the air- bearings at a selected predetermined time after de-energizing the power drive of the apparatus. A method of controlling yarn tension during stop-off of the apparatus includes the steps of maintaining air pressure in the air-bearings after de-energizing the power drive to the apparatus, continuing to maintain the air pressure while the apparatus and the freely rotating ring decelerate for a predetermined time period, and reducing the air pressure at the end of the time period so that the ring decelerates more rapidly and stops prior to the remainder of the apparatus.
343948
Baucom Joe B.
Donnelly James E.
Ridout & Maybee Llp
Spin-O-Magic Inc.
LandOfFree
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