Hand held transparency projector with simple advance mechanism

Details Hand held transparency projector with simple advance mechanism Hand held transparency projector with simple advance mechanism

G - Physics

03

B

88/83

G03B 23/08 (2006.01) G03B 21/00 (2006.01)

Patent

CA 1151916

FDN-1242 HAND-HELD TRANSPARENCY PROJECTOR WITH SIMPLE ADVANCE MECHANISM Abstract of the Disclosure A hand-held transparency projector includes a housing having a recess formed in the housing for carrying a film cartridge, and a projection aperture in one end of the housing through which the images on the film in the cartridge may be projected. The housing carries a film driving mechanism for advancing the film within the cartridge past the projecting aperture when the cartridge is carried within the recess of the projector. The film driving mechanism includes a claw mounted for slideable forward and return movements within the housing, the claw engaging perforations in the film at the end of the forward movement and advancing the film during the return movement in discrete steps of one frame. In addition there is an actuating lever for selective elec- trical connection of a projector light source within a battery source.

361247

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