Self-twisted yarn and method and apparatus for producing it

Textiles: spinning – twisting – and twining – Strand structure – Alternately twisted

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Details

57293, 57350, 57204, 57328, D01H 528, D01H 790, D01H 792, D02G 326

Patent

active

042767407

ABSTRACT:
Two or more single strands are formed and false twisted to provide sections of S-twist and Z-twist which are longitudinally spaced apart and separated by nodes which have no twist. The strands while moving longitudinally are held against rotation at points between which the adjacent strands twist in a same direction. The twist between each pair of points becomes redistributed, and the strands are released to enable them to twist together to form a self twist plural strand yarn.
The strands are held against rotation during twist redistribution by apparatus which includes a device for interconnecting the strands at the points, and a rotation preventer which moves with and lies between the strands adjacent to the interconnected points.

REFERENCES:
patent: 3225533 (1965-12-01), Henshaw
patent: 3434275 (1969-03-01), Backer et al.
patent: 3443370 (1969-05-01), Walls
patent: 3468120 (1969-09-01), Hildebrand
patent: 3537251 (1970-11-01), Kimura et al.
patent: 3717988 (1973-02-01), Walls
patent: 3775955 (1973-12-01), Shah
patent: 4074511 (1978-02-01), Chambley et al.
patent: 4123893 (1978-11-01), Chambley et al.

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