Yarn feed roll assembly

Details Yarn feed roll assembly Yarn feed roll assembly

D - Textiles, Paper

05

C

28/51, 192/6

D05C 15/08 (2006.01) D05C 15/18 (2006.01)

Patent

CA 1102720

ABSTRACT A yarn feed roller assembly for a tufting machine pattern attachment for controlling the amount of yarn supplied to the needles of the machine in accordance with a pattern. The assembly includes a plurality of roller sets, each roller of the set hav- ing an inner race secured for rotation to a shaft driven at a different speed than the other rollers of the set. The roller also has an outer race journally supported on the inner race for rotation relative thereto. The outer race has a toothed ring at the inner circumference and the inner race carries a plurality of toothed segments adapted for coupling engagement with the ring to drive the outer race. The segments are comprised of magnetic material and an external magnetic field is selective- ly energized to attract the segments or one or the other rollers into engagement with its ring to reed yarn at the rate of the selected roller.

313369

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