Optics: image projectors – Slide transfer mechanism – Gravity operated
Patent
1982-01-04
1983-05-31
Marcus, Stephen
Optics: image projectors
Slide transfer mechanism
Gravity operated
353111, 353 21, G03B 2302
Patent
active
043858163
ABSTRACT:
A slide previewer/sorter/stack loader having a holder (18) which is adapted to receive two photographic slides in first and second receptacles at one end thereof. The holder is initially positioned at an angle above horizontal so that a first slide placed on a chute (16, 17) will drop into the first receptacle by force of gravity. When in the initial position, the slide in the holder is illuminated by a back light so that the slide can be previewed through a window in the holder and edited. The holder pivots in such a manner that the second receptacle can be positioned over a slide slot (28) above a projector. Means (26) are provided to restrain the slide in the first receptacle during transit from the initial viewing position to the position wherein the second receptacle is positioned over the slide slot. A second slide in the projector is forced upward by the projector slide lifter mechanism into the second receptacle in the holder, and is retained therein by a latch (52). The holder is then moved by the projector tray indexing mechanism (78) to position the first receptacle over the slide slot. The first slide in the first receptacle is then lowered into the projector by the projector slide lifter mechanism for projection. The holder is then returned to its initial position, and the second slide drops out of the second receptacle into a bin in a tray (29). The cycle is repeated to project successive slides.
REFERENCES:
patent: 3276314 (1966-10-01), Robinson
patent: 3591275 (1971-07-01), Badalich
patent: 3858970 (1975-01-01), Collier
patent: 4249329 (1981-02-01), Lamb
patent: 4338738 (1982-07-01), Lamb
Lamb Owen L.
Marcus Stephen
Sharp William R.
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