Optics: image projectors – Slide transfer mechanism – Gravity operated
Patent
1979-06-27
1980-11-11
Stephan, Steven L.
Optics: image projectors
Slide transfer mechanism
Gravity operated
40511, G09F 1130, G03B 2302
Patent
active
042329531
ABSTRACT:
A slide projector for projecting slides, which may be transferred into the registry with projection aperture and out of the registry with the projection aperture, solely by the force of gravity, without the need for any mechanical slide transferring apparatus. A rotary slide tray is vertically arranged with the slides in a radial orientation, and the rotary slide tray is arranged over a central hub portion having a vertically arranged projection passage formed therein. Upon rotating the rotary slide tray, slides are permitted to radially drop from the tray by the influence of gravity into the projection passage and will be caused to back-up in the passage, since they are falling entirely through the slot and resting upon slides already in the rotary slide tray in diametrically opposed locations. A specialized slide construction, formed as a double planar slide of two individual slides arranged having like horizontal edges arranged adjacent, is employed and successive cycles of the rotary slide tray are required in order to project both images of the double slide.
REFERENCES:
patent: 1412885 (1922-04-01), Mottet
patent: 2748653 (1956-06-01), Pollan et al.
patent: 3343454 (1967-09-01), Mahoney
patent: 3402489 (1968-09-01), Schlessel
patent: 3469910 (1969-09-01), Badalich
patent: 3680953 (1972-08-01), Rube
patent: 3874788 (1975-04-01), Thorn et al.
patent: 4105317 (1978-08-01), Sobotta
LandOfFree
Gravity-feed rotary tray slide projector does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Gravity-feed rotary tray slide projector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gravity-feed rotary tray slide projector will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1688261