Apparatus for freeing the bottom wraps and the downwinds of yarn

Details Apparatus for freeing the bottom wraps and the downwinds of yarn Apparatus for freeing the bottom wraps and the downwinds of yarn

1987-08-06

1989-04-25

Gilreath, Stanley N.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

B65H 5422, B65H 6708

Patent

active

048240370

ABSTRACT:
Apparatus for freeing the bottom wraps and the downwinds of yarn from a textile bobbin to provide a free yarn end in preparation for subsequent unwinding of the bobbin, including three bobbin engaging and rotating rollers arranged in a triangle with two of the rollers being driven and the third roller being movable into engagement with the top of the bobbin to rotationally support the bobbin by the three rollers. The axes of rotation of two of the three rollers are skewed with the skewing being related to the direction of rotation to cause an upward component of rotational support of the bobbin to raise it against a stop member and away from a bottom support plate that is then pivoted downwardly to form an opening to accommodate jets of compressed air acting somewhat downwardly against the bobbin to free the downwinds and bottom wraps of yarn.

REFERENCES:
patent: 3464640 (1969-09-01), Kupper
patent: 3770220 (1973-11-01), Kupper
patent: 3923264 (1975-12-01), Kupper
patent: 4009840 (1977-03-01), Muller
patent: 4103836 (1978-08-01), Kupper

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