Device for friction false-twisting of textile yarns of synthetic

Details Device for friction false-twisting of textile yarns of synthetic Device for friction false-twisting of textile yarns of synthetic

1976-11-09

1978-10-17

Petrakes, John

Textiles: spinning, twisting, and twining

Apparatus and processes

Receiving twist type

57 7745, D02G 104

Patent

active

041201442

ABSTRACT:
Friction false-twisters for textile yarn are described in which the yarn passes sinuously and in zig-zag fashion past the edges of overlapping circular rotating members distributed between and fixed to three parallel rotating shafts having their axes parallel and located, in plan view, at the corners of an equilateral triangle. The intermediate members are simple rotary discs but the member that receives the yarn and that from which it is withdrawn are hemispheres or hemiellipsoids respectively on two of the shafts, or both on the same shaft, and facing in opposite directions. The yarn is fed perpendicular to the shaft axis to the convex end of one hemisphere and withdrawn from the convex end of the other hemisphere either perpendicular to or at an angle between 50.degree. and 80.degree. to the shaft axis. All three shafts rotate at the same speed in the same sense.

REFERENCES:
patent: 3919833 (1975-11-01), Horvath et al.
patent: 3964248 (1976-06-01), Schuster
patent: 3973383 (1976-08-01), Yu

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