Apparatus for controlling the bi-directional transport of a flex

Details Apparatus for controlling the bi-directional transport of a flex Apparatus for controlling the bi-directional transport of a flex

1976-08-24

1978-03-21

Wright, Jr., Ernest T.

Textiles: fiber preparation

197162, 242 674, 747105, 74770, B41J 3340

Patent

active

040798283

ABSTRACT:
Unidirectional driving torque is applied to the inputs of first and second differential gears. Each differential gear includes an output blocking gear as well as a spool output gear coupled to a spool with a ribbon web transported between the spools. A locking gear alternately engages the blocking gears and is held in position by a detent mechanism which yieldably restrains rotation of the locking gear. Each of the spool output gears are provided with unidirectional brakes. The restrained blocking gear selects the differential gear through which the input drive is transferred to its respective spool. A web tension condition causes the restrained blocking gear to rotate the locking gear against the detent and the locking gear increments to its alternate position with the previous supply spool becoming the take-up spool.

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