Node fixation in self-twist yarn

Details Node fixation in self-twist yarn Node fixation in self-twist yarn

1978-03-29

1979-10-09

Gorenstein, Charles

Textiles: spinning, twisting, and twining

Apparatus and processes

Alternate twist

57 22, H01B 1304, D02G 326

Patent

active

041701038

ABSTRACT:
False-twisted yarns are continuously fed to a locking mechanism on a rotating guide wheel. The locking device has a clamping shoe for engaging the yarn, after which the direction of false twist is reversed. Two additional clamping shoes then engage the yarn upstream and downstream of the first clamping point. The first shoe is then retracted to permit the twist between the additional shoes to cancel, and a fluid vortex is used to entangle the yarn filaments, locking the node.

REFERENCES:
patent: 3407583 (1968-10-01), Irwin et al.
patent: 3434275 (1969-03-01), Bacher et al.
patent: 3572025 (1971-03-01), Irwin
patent: 3775955 (1973-12-01), Shah
patent: 4002012 (1977-01-01), Norris et al.

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