Sound-film camera

Optics: motion pictures – With sound accompaniment – Common picture and sound record carrier systems

Patent

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Details

352 72, 352178, G03B 3102

Patent

active

040663450

ABSTRACT:
A cine camera for taking talking pictures comprises a film-feeding mechanism which includes a driven capstan and a pinch roller normally spaced therefrom to facilitate insertion of a section of film therebetween when the camera casing is loaded with a sound-film cassette. A trigger, serving to close a switch for energizing the film drive, becomes effective to move the pinch roller -- mechanically or electromagnetically -- into a working position close to the capstan after a support for this roller has been moved from a retracted position into a standby position by the displacement of an independently operable external actuating member. Continued depression of the trigger may prevent the roller support from returning to its retracted position even if the actuating member is released.

REFERENCES:
patent: T920009 (1974-03-01), Kosarko
patent: 3825327 (1974-07-01), Kosarko
patent: 3880504 (1975-04-01), Marvin

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