Optics: image projectors – Slide transfer mechanism – Slides reciprocated horizontally
Patent
1977-12-30
1979-05-08
Haroian, Harry N.
Optics: image projectors
Slide transfer mechanism
Slides reciprocated horizontally
353DIG1, G03B 2314
Patent
active
041533534
ABSTRACT:
Apparatus having a chamber for receiving a stack of photographs which are to be sequentially moved into a projection plane whereat their images may be projected onto a viewing screen. One wall of the chamber includes a shelf which is adapted to support one end of the stack of photographs such that, upon initial loading of the stack of photographs into the chamber, the endmost photograph located closest to the projection plane is prevented from falling completely into the projection plane. The apparatus includes an indexing member which is movable into and out of engagement with the one end of the endmost photograph so as to push it off of the shelf thereby enabling it to move substantially fully into the projection plane wherein it defines an acute angle with the next adjacent photograph which is now being supported at one end by the shelf. The relationship of these two photographs is now such that only their ends, i.e., the ends opposite the shelf are in engagement with each other thereby substantially obviating any problem of the two photographs damaging each other, e.g., by scratching each other, during movement of the endmost photograph in a direction away from their engaged ends and toward their said one ends.
REFERENCES:
patent: 2849814 (1958-09-01), Rideout
patent: 3038274 (1962-06-01), Nagel
patent: 3264937 (1966-08-01), Antos
Corrigan Alfred E.
Haroian Harry N.
Polaroid Corporation
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