G - Physics – 03 – B
Patent
G - Physics
03
B
271/37, 88/74
G03B 1/58 (2006.01) G03B 21/44 (2006.01)
Patent
CA 1055977
ABSTRACT OF THE DISCLOSURE A motion picture projector having a slot for edgewisw loading of the film a provided with a film strip encapsulating and drive system which is operated by a single control lever. Operation of a control lever moves a plurality of film path forming elements to an open position so that edgewise insertion of the film into the projector automatically forms loops on either side of a film gate. Closure of the control lever encapsulates the film strip within film gate drive sprockets and around a sound drum while maintaining free loops on either side of the film gate. The actuator includes a pair of switches to shut down a drive system projection lamp and an audio amplifier when moving between an open or loading position and a closed position to prevent inadvertent damage to the film which could occur if the drive means continued in operation. A second switch connected to the projection lamp and audio amplifier maintains these units in an off position when the actuator is in an open position.
265492
Kerstein Melvin T.
Pasturczak Vincent S.
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