Open-end spinning machine and a method of stopping the same

Details Open-end spinning machine and a method of stopping the same Open-end spinning machine and a method of stopping the same

1977-04-15

1978-09-12

Watkins, Donald

Textiles: spinning, twisting, and twining

Apparatus and processes

Web material

57 5889, 57 80, 57156, D01H 112, D01H 1316, D01H 1500

Patent

active

041126610

ABSTRACT:
Disclosed is an open-end spinning machine and a method of stopping the same. The machine comprises: feed rollers, for supplying fibers to a combing roller, connected to a main power source via a clutch; a spinning rotor, for collecting the fibers combed by the combing roller into a yarn and for twisting the yarn, connected to another power source via a clutch; a draw off roller and a press roller urged toward the draw off roller, for withdrawing the yarn from the spinning rotor, connected to the main power source via an endless driving belt and to a brake; a traverse guide, for traversing the withdrawn yarn along a bobbin supported by a pair of cradle arms, connected to the main power source via a clutch and to a brake; a winding drum, for frictionally driving the bobbin to wind the yarn around the bobbin and form a cheese, connected to the main power source and; a controlling device, for controlling the brakes and clutches according to a predetermined program, by which the traverse guide is stopped when both the feed rollers and the spinning rotor are turned off, but before both the draw off rollers and the winding drum are stopped. By utilizing this machine and method, the number of yarn breakages occurring during the starting operation is decreased.

REFERENCES:
patent: 3354626 (1967-11-01), Cizek et al.
patent: 3541774 (1970-11-01), Sterba et al.
patent: 3670484 (1972-06-01), Brazda et al.
patent: 3678673 (1972-07-01), Prochazka et al.
patent: 3695017 (1972-10-01), Hori et al.
patent: 3733799 (1973-05-01), Roethke
patent: 3749327 (1973-07-01), Roethke et al.
patent: 3939638 (1976-02-01), Bruckert et al.
patent: 4020622 (1977-05-01), Lattion

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