Method and apparatus for producing an end winding on a yarn bobb

Details Method and apparatus for producing an end winding on a yarn bobb Method and apparatus for producing an end winding on a yarn bobb

1989-03-22

1990-03-20

Petrakes, John

Winding, tensioning, or guiding

Coil holder or support

Spool or core

57299, 242 356E, B65H 6500, D01H 138

Patent

active

049094513

ABSTRACT:
A method and apparatus for producing an end winding on a bobbin on which yarn has been wound. The bobbin is wound in an unwinding direction while the trailing yarn end is engaged and a length of yarn is unwound from the bobbin by suction. The yarn is released from the suction once a length of yarn has been unwound from the bobbin, the released unwound yarn falls onto a yarn support member to be supported at a location at substantially the level of the upper end of the bobbin. The bobbin is then further rotated in the unwinding direction to wind the unwound yarn length into an end winding on the upper end of the bobbin. The yarn support member includes a pair of oppositely sloping transverse surfaces spaced lengthwise of the yarn from one another to define a receiving slot therebetween and a yarn guiding eye is disposed beneath and in communication with the receiving slot for supporting the unwound yarn length during winding of the end winding.

REFERENCES:
patent: 2921752 (1960-01-01), Bourassa et al.
patent: 3110450 (1963-11-01), Raasch
patent: 3117738 (1964-01-01), Raasch et al.
patent: 3841074 (1974-10-01), Wachendorf et al.
patent: 4617791 (1986-10-01), Lousberg
patent: 4619416 (1986-10-01), Matsui et al.

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