Slide viewer or projector

Details Slide viewer or projector Slide viewer or projector

1981-09-09

1983-06-28

Mancene, Gene

Card, picture, or sign exhibiting

Photographic transparency viewer, e.g., x-ray viewer

40362, 40366, 353104, G03B 2001, G03B 2304

Patent

active

043898033

ABSTRACT:
A slide viewer or projector is provided with a device for preventing two or more slides from attempting to enter into the viewing or projecting area simultaneously. The device comprises a barrier with a wiper pivotally mounted thereon. The barrier and wiper are spaced apart from the path taken by a slide so that the slide pivots the wiper against the action of biasing means and then the barrier is raised into engagement with the upper surface of the slide and this allows the wiper to wipe over the upper surface of the slide to "kick off" any other slide resting on the surface.

REFERENCES:
patent: 2853816 (1958-09-01), Rogas
patent: 3419982 (1969-01-01), Heisler

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