Optics: motion pictures – With film treating or working
Patent
1977-01-03
1978-08-08
Adams, Russell E.
Optics: motion pictures
With film treating or working
352176, G03C 1100
Patent
active
041053095
ABSTRACT:
An apparatus for processing and viewing cassette contained film strips automatically in response to the condition of a cassette containing the film strip in accordance with programmed operational modes determined by an electro-mechanical logic system. The logic system enables the use of a single unidirectional electric motor for driving all viewer apparatus components including a programming cam disc between "off", "project" and "process/rewind" positions. A power switch organization brings about energization of the motor upon cassette insertion as well as movement of the logic disc to the off position upon a combination of cassette ejection and rotation of the camming disc to the off position. Motor operation in the process mode is controlled by an electronics system controlled by a combination of the programming disc position and the conductive or non-conductive state of cassette contained contacts which correspond respectively to the unprocessed or processed state of the film strip in the cassette.
REFERENCES:
patent: 3851958 (1974-12-01), Land
patent: 3879116 (1975-04-01), Land
patent: 3941465 (1976-03-01), Figge et al.
Adams Russell E.
Goettel Frederick A.
Polaroid Corporation
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