Self twist yarn and method and apparatus for making such yarns

Details Self twist yarn and method and apparatus for making such yarns Self twist yarn and method and apparatus for making such yarns

1979-12-17

1981-07-21

Petrakes, John

Textiles: spinning, twisting, and twining

Strand structure

Alternately twisted

57293, D02G 326, D02G 328, D01H 790, D01H 792

Patent

active

042791200

ABSTRACT:
Self-twisting yarns are made by a system in which a strand twisting device is engaged with the strand and moves at strand speed to twist the oppositely-extending sections of the strand in opposite directions. The strand is brought together with another strand and released, enabling it to untwist and twist itself to the other strand. Various arrangements are disclosed for maximizing the distance between twist reversal nodes, for cabling plied yarns together, for strengthening the strands, for reducing the tensile stresses imposed on the strands and for producing unique products with non-uniform node spacing or unequal strand lengths between adjacent pairs of nodes.

REFERENCES:
patent: 3225533 (1965-12-01), Henshaw
patent: 3434275 (1969-03-01), Backer et al.
patent: 3468120 (1969-09-01), Hildebrand
patent: 3545194 (1970-12-01), Fish et al.
patent: 3775955 (1973-12-01), Shah
patent: 4068459 (1978-01-01), Movshovich et al.
patent: 4074511 (1978-02-01), Chambley et al.
patent: 4170103 (1979-10-01), Norris et al.

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