Method of forming S-Z twisted strand units

Details Method of forming S-Z twisted strand units Method of forming S-Z twisted strand units

1978-11-06

1980-01-08

Petrakes, John

Textiles: spinning, twisting, and twining

Apparatus and processes

Alternate twist

H01B 1304

Patent

active

041821076

ABSTRACT:
A method is disclosed for forming strands into twisted strand units having a twist direction that reverses from section to section wherein the strands are advanced side-by-side successively through first and second mutually spaced twister heads. The strands are formed into twisted strand units by the steps of operating the twister heads simultaneously by revolving the twister heads in a common rotary direction about the strands at substantially the same speed of head revolution thereby causing a first progression of twists of one lay direction to pass from the first twister head towards the second twister head, and a second progression of twists of opposite direction lay to emanate from the second twister head. Twisting operations by the first and second twister heads are simultaneously terminated as the leading end of the first progression of twists reaches the second twister head and a trailing end of the second progressing of twists emanating therefore. Twisting operations of the first and second twister heads are then suspended until a trailing end of the first progression of twists reaches the second twister head whereupon the foregoing steps are repeated.

REFERENCES:
patent: 2655781 (1953-10-01), Heberlein et al.
patent: 3052079 (1962-09-01), Henning
patent: 3373550 (1968-03-01), Symonds
patent: 3507108 (1970-04-01), Yoshimura et al.
patent: 3593509 (1971-07-01), Feese et al.
patent: 3643411 (1972-02-01), Vogelsberg
patent: 3782092 (1974-01-01), Vogelsberg
patent: 3808787 (1974-05-01), Vogelsberg
patent: 3823536 (1974-07-01), Vogelsberg et al.
patent: 3941166 (1976-03-01), Maillefer
patent: 4006582 (1977-02-01), Gurkaynak et al.
patent: 4056925 (1977-11-01), Vogelsberg
"Forming Alternate Reverse Twists in a Continuously Advancing Wire Paire"; Hutchinson et al.; Western Electric Technical Digest, No. 23; pp. 33 & 34; Jul. 1971.

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