Method of producing knop yarn

Details Method of producing knop yarn Method of producing knop yarn

1974-03-15

1976-03-23

Petrakes, John

Textiles: spinning, twisting, and twining

Apparatus and processes

Elements

57 12, 57 91, 57140J, 57144, D02G 334

Patent

active

039451895

ABSTRACT:
Fancy yarns such as knop or stripe yarns are produced by supplying an effect yarn or roving to a foundation yarn or roving during the operation of spinning but before the foundation yarn reaches the twisting spindle. The effect yarn is kept under a tension which is adjusted to cause the yarn to oscillate with respect to the foundation yarn. Oscillation builds up layers of effect yarn at intermittently spaced locations along the foundation yarn which constitute irregular knops or stripes on the yarn. The twist of the effect yarn in the finished fancy yarn will be found to reverse with each succeeding layer in the knop. The invention enables fancy yarns to be readily produced on ordinary spinning frames without the provision of interrupted feeds or other special features on the frame.

REFERENCES:
patent: 2211641 (1940-08-01), Bry
patent: 2211642 (1940-08-01), Bry
patent: 2211643 (1940-08-01), Bry
patent: 2279297 (1942-04-01), Bry
patent: 2309095 (1943-01-01), Bry
patent: 2731789 (1956-01-01), Holder
patent: 3334483 (1967-08-01), Radcliffe
patent: 3763640 (1973-10-01), Nagel et al.

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