G - Physics – 03 – B
Patent
G - Physics
03
B
271/43
G03B 1/00 (2006.01)
Patent
CA 1108660
Abstract of the Disclosure A hand held motion picture viewer includes a housing having a recess formed in one end of the housing for carrying a film cartridge, and a viewing aperture in the opposite end of the housing through which the images on the film in the cartridge may be viewed. The housing carries a film driving mechanism for engaging and advancing the film within the cartridge past the viewing aperture. The film driving mechanism includes a battery operated motor, a claw journaled for rotation within the housing and positioned to engage sprocket holes in the film when the cartridge is carried within the recess of the viewer, and a gear transmission means connected between the motor and the claw for rotating the claw in discrete arcuate steps when the motor is energized to produce intermittent film advance. An actuating lever and movable spring contact means are provided for selective electrical connec- tion of the motor with the battery for selective energization of the motor and film advance. The actuating lever is coupled to a contact cam having a lobe which engages the contact means to move it into electrical contact with a terminal of the battery when the lever is depressed. When released, the lever is restored to its inactive position by the spring force of the contact means.
362835
G. A. F. Corporation
Smart & Biggar
LandOfFree
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