Optics: image projectors – With sound accompaniment – Common picture and sound record carrier system
Patent
1974-06-05
1976-04-27
Aegerter, Richard E.
Optics: image projectors
With sound accompaniment
Common picture and sound record carrier system
353110, 353120, 274 1R, 274 9B, G03B 3106
Patent
active
039531180
ABSTRACT:
An audio-visual unit includes a disc mounting a plurality of discrete image transparencies arranged in a continuous pattern for successive visual display; a record co-axially mounted on the disc includes separate recorded messages corresponding to respective transparencies on the disc. The projector includes an advance mechanism manually operable successively for intermittently rotating the disc thereby to present the transparencies in seriatim for visual display. An indexing mechanism is operated in response to actuation of the advance mechanism for intermittently moving a tone arm to successive positions corresponding to the starting grooves of respective messages on the record. A reset mechanism is connected with the indexing mechanism for locating the tone arm in a position corresponding to the beginning groove of a selected one of said messages; the reset mechanism is automatically actuated either by manually actuating the advance mechanism a predetermined number of times or by moving the advance mechanism to a "load" position.
REFERENCES:
patent: 3484160 (1969-12-01), Glass
patent: 3572704 (1971-03-01), Glass
patent: 3836241 (1974-09-01), Staav
Aegerter Richard E.
Dresner Arthur
GAF Corporation
Kehm Walter C.
Mirabito A. Jason
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