Compact visualizer

Details Compact visualizer Compact visualizer

1976-07-26

1977-09-27

Haroian, Harry N.

Optics: image projectors

Composite projected image

Slides and/or film superposed in projector

40 86A, G03B 2126

Patent

active

040508099

ABSTRACT:
A visualizer has a case containing spools arranged in sets of two. A different film strip is wound around the two spools of each set and the portion of the film strip located intermediate the two spools passes through a gate where all the film strips are superimposed. Each spool has a pinion gear which is normally located adjacent to a large drive gear rotated by a hand crank on the case. An actuating mechanism brings the pinion gear of either spool for a set into engagement with the drive gear, causing the spool to rotate and advance the film strip of that set through the gate, the direction of advancement being dependent on which of the spools is engaged with the spur gear. Hence, it is possible to change the composition of the composite illustration formed by the superimposed film strips.

REFERENCES:
patent: 149809 (1974-04-01), Taylor
patent: 225130 (1880-03-01), Herbert et al.
patent: 1090502 (1914-03-01), Robinson
patent: 2647435 (1953-08-01), Nemeth
patent: 2813457 (1957-11-01), Fitzgerald
patent: 3975094 (1976-08-01), Boggs

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