Switch control apparatus for ribbon tensioning systems

Details Switch control apparatus for ribbon tensioning systems Switch control apparatus for ribbon tensioning systems

1975-01-17

1976-10-12

Scott, James R.

Electricity: circuit makers and breakers

Special application

Running length, web or strand actuated

242 7543, 242 673R, 335236, B65H 2514

Patent

active

039859835

ABSTRACT:
A tension control system employing a shunt-positioning slide provided with a longitudinal slot engaged by a pin carried by a tension-responsive actuating slide member only when predetermined upper and lower tension thresholds are exceeded to insert and withdraw a shunt member from a position between a magnet and a reed switch which deactivates and activates a rewind motor while preventing undesirable recycling of the reed switch and rewind motor.

REFERENCES:
patent: 3246526 (1966-04-01), Dollheimer et al.
patent: 3426976 (1969-02-01), Maxey
patent: 3541277 (1970-11-01), Miller et al.
patent: 3741054 (1973-06-01), Alperin et al.
patent: 3797773 (1974-03-01), Berry

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