Sound system pinch roller actuating device

Details Sound system pinch roller actuating device Sound system pinch roller actuating device

1975-03-10

1976-05-25

Hayes, Monroe H.

Optics: motion pictures

With sound accompaniment

Common picture and sound record carrier systems

352178, 352 29, G03B 3102

Patent

active

039588688

ABSTRACT:
In a sound motion picture camera, a pinch roller actuating device for displacing the pinch roller into engagement with a constantly rotating capstan for transporting an elongated web such as sound film. The pinch roller contacting device includes a manually actuatable camera operating trigger member movable into and out of operative engagement with a control member provided with a neutral portion and an active portion which moves the pinch roller into engagement with the capstan. The neutral portion is provided to move the control member slightly, if at all, even if the trigger member is moved significantly after the pinch roller has contacted the capstan through displacement by the active portion.

REFERENCES:
patent: 3492067 (1970-01-01), Matsubara
patent: 3751149 (1973-08-01), Mueller
patent: 3880504 (1975-04-01), Marvin

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