Method and apparatus for monitoring, grasping and release of yar

Details Method and apparatus for monitoring, grasping and release of yar Method and apparatus for monitoring, grasping and release of yar

1989-10-23

1991-05-21

Hail, III, Joseph J.

Textiles: spinning, twisting, and twining

Apparatus and processes

Monitor and control

57274, D01H 902

Patent

active

050164333

ABSTRACT:
A method and apparatus for monitoring the proper grasping and release of yarn tubes by an automatic bobbin changer in removing fully-wound yarn tubes from, and placing empty replacement yarn tubes onto, the spindles of an associated ring spinning machine or ring twisting machine. After an operation of the bobbin changer for either grasping or releasing yarn tubes, a light beam is directed through an area previously occupied by the tubes, a determination is made whether the light beam is interrupted by any tube which the bobbin changer failed to grasp or release, and if so, a failure signal is generated to interrupt continued operation of the bobbin changer.

REFERENCES:
patent: 3751895 (1973-08-01), Anderson et al.
patent: 3791124 (1974-02-01), Kaufmann et al.
patent: 4333411 (1982-06-01), Lerner
patent: 4527496 (1985-07-01), Kemmel
patent: 4660370 (1987-04-01), Matsui et al.

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