Feed shuttle mechanism for motion picture film strips

Details Feed shuttle mechanism for motion picture film strips Feed shuttle mechanism for motion picture film strips

1978-09-13

1980-05-20

Hayes, Monroe H.

Optics: motion pictures

Camera and/or projector drive mechanisms

With film engaging claws reciprocally driven to engage film

226 62, G03B 122

Patent

active

042036569

ABSTRACT:
A film strip feed shuttle mechanism is provided in which a film engaging claw is supported laterally of an elongated body member adapted to be driven by camming surfaces for both longitudinal reciprocation and oscillatory rotation with respect to an axis established by means for supporting the body member. The shuttle is supported by tension springs retaining the member against the supporting means. The camming surface effecting the longitudinal reciprocation of the shuttle and its mating cam follower surface are positioned with respect to the axis and the laterally supported film engaging claw so that the frictional force developed as a result of the interaction between the cam and cam follower effect an induced torque encouraging rotation of the body member and the claw carried thereby about the axis in a direction causing the claw to move into engagement with the film strip.

REFERENCES:
patent: 2733633 (1956-02-01), Wottring
patent: 3410639 (1968-11-01), Chandler

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