Yarn withdrawal apparatus and method

Details Yarn withdrawal apparatus and method Yarn withdrawal apparatus and method

1988-07-12

1990-01-02

Gilreath, Stanley N.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

226 97, 226108, 242 18R, 242 47, 242 4712, 28289, B65H 5120

Patent

active

048908002

ABSTRACT:
A yarn withdrawal apparatus and method is disclosed for temporarily withdrawing a freshly spun and continuously advancing yarn to a waste container when the spinning operation is interrupted, and for thereafter threading the yarn onto the feed godet or winder of the spinning machine. The apparatus comprises a yarn advancing means in the form of a rotating tapered roll, which is adapted to have the yarn looped thereabout. The tapered roll comprises a yarn inlet portion and a yarn exit portion, with the inlet portion being designed to initially contact the advancing yarn. The cone angle of the inlet portion is predetermined so as to cause the yarn to initially engage the rotating roll without lateral slippage and thereby permit the rotating roll to exert a strong tension on the yarn. The yarn subsequently slips laterally along the yarn inlet portion of the roll and toward the yarn exit portion, and it is then tangentially withdrawn from the roll. The yarn exit portion of the roll has a cone angle which is predetermined to prevent the yarn from sliding therealong to the end of the roll.

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