Ply yarn spinning assembly

Details Ply yarn spinning assembly Ply yarn spinning assembly

1981-06-10

1983-06-28

Watkins, Donald

Textiles: spinning, twisting, and twining

Apparatus and processes

Covering or wrapping

57 18, 57 19, 57 78, 57 80, 57264, D01H 1322, D01H 1316

Patent

active

043898378

ABSTRACT:
The invention involves a ply or wrapped yarn spinning assembly of the type having a drawing unit supplying a sliver through one or more hollow spindles, at which hollow spindles a binding thread is wrapped spirally around the sliver to form yarn. Yarn condition monitors detect the yarn condition and the supply of binding thread. In the event of a malfunction, including exhaustion of binding thread at a hollow spindle, the monitors automatically disengage the supply of sliver by pivoting open a load bearing member of the drawing unit. In preferred embodiments the monitors also actuate mechanical actuators for pivoting driving or driven rollers of the hollow spindles, yarn take-off rolls, and a yarn windup device of the spinning assembly. An auxiliary thread bobbin and associated cutter mechanisms are also provided to facilitate restarting after a malfunction and shutdown.

REFERENCES:
patent: 1885423 (1932-11-01), Fenton
patent: 2023407 (1935-12-01), Cobb
patent: 3124843 (1964-03-01), Adams et al.
patent: 3609820 (1971-10-01), Hohloch
patent: 4117654 (1978-10-01), Petrov et al.
patent: 4228639 (1980-10-01), Hunt et al.

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