Process and apparatus for reattachment of a thread in an open-en

Details Process and apparatus for reattachment of a thread in an open-en Process and apparatus for reattachment of a thread in an open-en

1974-11-18

1977-08-16

Petrakes, John

Textiles: spinning, twisting, and twining

Apparatus and processes

Web material

57 5895, 57156, D01H 1500, D01H 112

Patent

active

040416852

ABSTRACT:
A process and apparatus for repairing thread breakage occurring in an open-end spinning machine which includes a spinning rotor, a pair of draw rollers, a thread tension sensor and thread windup spindles. The end of the thread to be reattached to fibers located within the spinning rotor is guided back from the windup spindle in such a way as to bypass the drawoff rollers and avoid being pinched thereby. The thread is passed alongside one of the draw rollers, preferably on a specially configured conical surface which facilitates eventual reinsertion between the two draw rollers.
The drive of the windup spindle is restarted by the tension sensor when it detects the reattachment of the end of the thread to the fibers in the spinning rotor as manifested by the increased tension in the thread. The increased tension pulls the thread between the drawoff rollers which transport it to the windup spindle at normal operating speed.

REFERENCES:
patent: 3540201 (1970-11-01), Susami et al.
patent: 3601969 (1971-08-01), Susami et al.
patent: 3670484 (1972-06-01), Brazda et al.
patent: 3680300 (1972-08-01), Landwehrkamp
patent: 3685267 (1972-08-01), Landwehrkamp et al.
patent: 3782089 (1974-01-01), Landwehrkamp
patent: 3803823 (1974-04-01), Niestroj et al.
patent: 3821878 (1974-07-01), Parsons

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