Film winding and rewinding apparatus

Details Film winding and rewinding apparatus Film winding and rewinding apparatus

1984-10-29

1986-12-02

Jillions, John M.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

242 674, 242202, 242204, 242205, B65H 1810

Patent

active

046259309

ABSTRACT:
This invention relates to a film winding and rewinding machine characterized by a single unidirectional motor being used in cooperation with a pair of electrically-actuated clutch/brake units and a suitable power train to actuate the take-up reel in either direction. It also encompasses an automatic mechanism responsive to the tail end of the film leaving the hub of the supply reel to shut off power to the motor and stop the take-up reel in both the FORWARD and REVERSE modes. It further envisions using the drag of the friction brake in whichever of the clutch/brake units is actuated into its clutch mode to apply a variable tension to the film coming off of the reel functioning in the capacity of the supply reel.

REFERENCES:
patent: 2685950 (1954-08-01), Demby
patent: 2782677 (1957-02-01), Steigman
patent: 3235197 (1966-02-01), Johnson et al.
patent: 3494573 (1970-02-01), Gerlach
patent: 3528628 (1970-09-01), Wangerin
patent: 3677498 (1972-07-01), Johnson et al.
patent: 3779485 (1973-12-01), Wolf et al.
patent: 3806061 (1974-04-01), Kollar et al.
patent: 3809336 (1974-05-01), Kollar et al.
patent: 3858828 (1975-01-01), Bundschuh et al.
patent: 3977620 (1976-08-01), Devel

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