Optics: motion pictures – Camera and/or projector drive mechanisms – With film engaging claws reciprocally driven to engage film
Patent
1987-12-17
1990-01-09
Hayes, Monroe H.
Optics: motion pictures
Camera and/or projector drive mechanisms
With film engaging claws reciprocally driven to engage film
352193, 352191, 226 62, 226 69, G03B 122
Patent
active
048924040
ABSTRACT:
A film transporting mechanism includes two film transporting claws disposed on opposite sides of a center plane. The claws come into engagement with perforations in two rows of perforations in a film to be transported stepwise past a picture window. Each claw is driven by its own transporting drive. The tips of the claws traverse an elongate, closed curve which at one end enters into the film's traveling plane and at another end leaves the plane. Each of the transporting drives has at least one drive shaft that is mounted in axially spaced bearings mounted in openings in laterally spaced bearing plates. The bearings for the drive shaft, or drive shafts, are disposed on opposite sides of the center plane, in the opening of the bearing plates. Transporting drive elements that couple the claws to a drive shaft, or drive shafts, are disposed further from the center plane than the bearings in the bearing plates and, when worn, can be easily replaced since the drive elements are located outwardly from the bearing plates.
REFERENCES:
patent: 3235151 (1966-02-01), Adams
patent: 3587960 (1971-06-01), Gerb
patent: 3759433 (1973-09-01), Gerber
patent: 4402581 (1983-09-01), Bauer
Arnold & Richter Cine Technik GmbH & Co. Betriebs KG
Hayes Monroe H.
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