Process and apparatus for rejoining a thread on an open-end fric

Details Process and apparatus for rejoining a thread on an open-end fric Process and apparatus for rejoining a thread on an open-end fric

1985-08-28

1987-01-06

Watkins, Donald

Textiles: spinning, twisting, and twining

Apparatus and processes

Piecing up

D01H 1502

Patent

active

046336605

ABSTRACT:
A process for rejoining the thread on an open-end friction-spinning device, in which fibers are fed into a V-shaped nip subjected to suction, and the thread formed in the V-shaped nip is drawn off from this and wound onto a bobbin. For rejoining, the fiber feed into the V-shaped nip is interrupted and a thread end drawn off from the bobbin is guided towards the V-shaped nip counter to the spinning direction. This thread end is paid out in front of the V-shaped nip and is stored in a joinable length in a storage station at the end of the V-shaped nip facing away from the bobbin. The bobbin is then advanced towards its drive roller and the thread is drawn off from the storage station. After a predetermined time after the start of the thread draw-off, the fibers are fed again into the V-shaped nip, where they come up against the thread end running through the V-shaped nip and are twisted together with this.

REFERENCES:
patent: 4539804 (1985-09-01), Derichs
patent: 4541234 (1985-09-01), Wassenhoven et al.

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