Method and apparatus for treating package yarn end

Details Method and apparatus for treating package yarn end Method and apparatus for treating package yarn end

1993-03-01

1994-10-18

Gilreath, Stanley N.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

242 3560E, 242164, 242172, B65H 6500

Patent

active

053560850

ABSTRACT:
Method and apparatus for picking up an yarn end so as to fix the same on a yarn package comprising picking up an yarn end from a yarn package by a suction means so as to hold the yarn end therein in a drawn state, inserting an yarn end handling bar between the held yarn end and the package surface, revolving the yarn end handling bar along the package surface while maintaining the bar beneath an outermost layer yarn connected to the yarn end until a layered portion is formed, in which the end yarn held in a drawn state coincides with the outermost layer yarn, and ejecting a jet of pressurized fluid onto or in the vicinity of the layered portion so as to entangle the yarn end with the outermost layer yarn so that the yarn end is fixed on the package.
Method and apparatus for treating a package end yarn when the yarn end is released from an entangled portion, in which the yarn end is entangled and fixed with an outermost yarn layer of a package comprising drawing the outermost yarn layer so as to float the same above the package surface with both ends thereof continuing to the package, severing the floating outermost layer yarn from the package at a portion on one side thereof, rotating the package in the unwinding direction so as to draw the other portion of the outermost yarn layer, severing the outermost yarn layer from the package at a portion on the other side thereof, and rotating the package in the winding direction so as to withdraw a fresh end yarn.

REFERENCES:
patent: 1527751 (1925-02-01), Seyfarth
patent: 3110450 (1963-11-01), Raasch
patent: 4384689 (1983-05-01), Bloomfield et al.
patent: 4760969 (1988-08-01), Otoshima et al.
patent: 4805845 (1989-02-01), Fluck et al.

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