Optics: motion pictures – Camera and/or projector drive mechanisms – With continuous feed and intermittent film arresting means
Patent
1973-01-31
1976-12-21
Hayes, Monroe H.
Optics: motion pictures
Camera and/or projector drive mechanisms
With continuous feed and intermittent film arresting means
352185, G03B 100
Patent
active
039985334
ABSTRACT:
A video film projector has a pin registration transport mechanism which employs inherent spring means in a loop of film to advance the film, and a synchronizing shutter to inhibit projection of light during transport of the film. The shutter comprises a rotating arcuate member rotatable to interrupt a light path of the projector, and an eccentric spindle rotatable with the shutter member and adapted to engage the film to `trigger` transport in synchronization with shuttering.
The projector also includes a unique film guide construction for self-threading of the projector, a co-axial film reel mounting and driving mechanism, and a film storage cartridge which includes a mechanism for retaining the free end of the film strip in proper orientation for self-threading of the projector.
REFERENCES:
patent: 1244920 (1917-10-01), Thomas
patent: 2960914 (1960-11-01), Rogers
patent: 3554635 (1971-01-01), Milliken
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