Device for use on a film projector for copying films

Details Device for use on a film projector for copying films Device for use on a film projector for copying films

1973-11-05

1977-04-26

Hayes, Monroe H.

Optics: motion pictures

Camera and/or projector drive mechanisms

With single frame operation

352137, 352121, G03B 2138

Patent

active

040198146

ABSTRACT:
A device on a film projector for copying movie films in combination with a movie camera which is equipped with a releaser for the exposure of single frames. Said device includes a speed-changing mechanism at the film projector for changing the speed of projection to less than the maximum exposure rate of the movie camera when operating the single-frame releaser. The film projector further comprises a pulse-generating switch, which is operated synchronously with the film feed mechanism of the film projector, such that a pulse is generated or transmitted at each change of frame of the projected film. Said pulses are used for releasing the single-frame releaser of the movie camera.

REFERENCES:
patent: 2011353 (1935-08-01), Capstaff
patent: 2310339 (1943-02-01), Arndt

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