Process and apparatus for preparing a cut-to-length thread end f

Details Process and apparatus for preparing a cut-to-length thread end f Process and apparatus for preparing a cut-to-length thread end f

1985-05-17

1987-03-31

Levy, Stuart S.

Textiles: spinning, twisting, and twining

Apparatus and processes

Piecing up

57 23, D01H 1502

Patent

active

046532609

ABSTRACT:
To improve the re-piecing operation, especially in terms of its success rate, at high spinning speeds, the free thread end cut to the length of a piecable end and retained after cutting the length is exposed to a turbulent air flow which causes it to execute whiplash-like oscillations. The surface of the thread end is thereby roughened. The thread end prepared in this way is subsequently transferred to the fiber-collecting surface of the open-end spinning apparatus. The roughening of the surface of the free thread end is accelerated when the end is whipped against an edge-like projection or a rough surface.

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