Optics: motion pictures – With sound accompaniment – Common picture and sound record carrier systems
Patent
1978-06-28
1979-06-12
Hayes, Monroe H.
Optics: motion pictures
With sound accompaniment
Common picture and sound record carrier systems
352 29, 352 72, 352174, 242197, G03B 3102
Patent
active
041578651
ABSTRACT:
A sound cine camera with a cassette-receiving compartment, in which a pinch roller is movable toward a continuously rotating capstan to drive a motion-picture film, is provided with a manually operable control member whose displacement into an off-normal position, against the force of a restoring spring, prepared or completes an energizing circuit for the film drive. The control member is linked with a pinch-roller support through a releasable coupling which remains effective only as long as the compartment cover or a latch thereof is in a closure position. Clamping pressure is exerted upon the pinch roller by a biasing spring engaging its support and acting upon the control member through a camming or toggle mechanism which reduces the holding force required to maintain that pressure when the control member is in its off-normal position.
REFERENCES:
patent: 3825327 (1974-07-01), Kosarko et al.
patent: 3963331 (1976-06-01), Komine et al.
patent: 3970378 (1976-07-01), Takagi et al.
patent: 4066345 (1978-01-01), Freudenschuss et al.
patent: 4070107 (1978-01-01), Freudenschuss et al.
Kantner Otto
VON Belvard Peter R.
Hauser Raimund
Hayes Monroe H.
Vockenhuber Karl
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