Optics: image projectors – Slide transfer mechanism – Slides fixed to movable carrier
Patent
1974-03-22
1976-01-20
Aegerter, Richard E.
Optics: image projectors
Slide transfer mechanism
Slides fixed to movable carrier
352103, G03B 2310, G03B 2500
Patent
active
039334139
ABSTRACT:
A drive mechanism for a spiral array of individual film photographs comprising a rotary driving plate having a spiral array of switch operating portions adapted to energize a driving motor for driving the driving plate; rotary axis means coupled to said driving plate; a photographic mount coupled to said rotary axis means and carrying a spiral array of individual photographs. A rectilinear bearing means on said frame adapted to guide said rotary axis means and said rotary driving plate together with said photographic mount in a rectilinear path laterally of the rotary axis of said rotary axis means, and mounting means carrying a track follower adapted to operate said switch and engagable with said switch operating portions. The track follower engaging a spiral track means on the rotary driving plate and serving to index said plate relative to said swith operating portions and also to activate said rotary driving plates in a direction along said rectilinear bearing means. The disclosure also relating to novel pawl means adapted to operate a single revolution at a time according to energization of a reduction gear motor for moving said rotary driving plate from one switch operating portion to the next one for controlling successive energization and movement of said pawl.
Additionally, the disclosure relates to specific details of the switch operating portions arranged in a spiral array on the rotary driving member and the relative geometry and spacing of the switch operating portions relative to rectangular photographs carried by the photographs mount of the invention. Additionally, the disclosure relates to an indicator arm used in conjunction with the foregoing rotary driving plate and photograph mount for moving the rotary driving plate and the photograph mount manually in a direction along a rectilinear path on the frame for reseting the rotary driving plate and respective individual photographs relative to an exposure area maintained in stationary position on the frame which carries the rectilinear bearing means.
REFERENCES:
patent: 1236819 (1917-08-01), Bulask et al.
patent: 2093033 (1937-09-01), Coullery
patent: 2373392 (1945-04-01), Griswold
patent: 3322035 (1967-05-01), Admon
Aegerter Richard E.
Stephan Steven L.
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