Camera apparatus for taking stereographic photographs

Claim 1

In a camera mechanism with lens means for photographing pictures stereographically in relief, including a movable lenticular screen, electrically operated shutter means for exposing through the lens means a photographic sensitive surface whereby the lenticular screen serves to restrict the fall of exposure light to a plurality of separately restricted areas only of said sensitive surface, the improvement comprising: a. a first-mechanism constituting an improved lever and activating mechanism for more accurately moving said lenticular screen a predetermined distance, and b. a second mechanism for opening and closing the shutter means operatively interconnected to said lenticular screen activating mechanism; c. said first mechanism including: 1. a frame to hold said lenticular screen so that said screen is capable of laterally shifting movements relative to the frame and lens means; 2. an angular lever adjustably and pivotally mounted near an upper end on said frame with the latter end which is adjacent the pivotal mounting being selectably engageable with said screen to move same; said lever having an opposite lower depending end to which a sleeve nut is mechanically connected to help actuate said lever; 3. a rotatable screw-threaded adjusting bolt mounted generally transverse to the depending lever, said sleeve nut mounted upon said bolt in a non-rotative but axially shiftable manner, whereby the sleeve nut is adjustably moved axially thereon responsive to relative rotation of said adjusting bolt to effect very accurate adjustment and correlated shifting movement of said screen relative to the frame; d. said second mechanism for operatively interconnecting said shutter opening and closing mechanism with said lenticular screen activating mechanism, including: 1. a switch-closing member attached to said sleeve nut on the adjusting bolt; 2. an electrical circuit for operating said shutter means; said circuit including a limit switch and electrical solenoid means connected into the circuit with said limit switch mounted adjacent to said for engagement by said switch-closing member on said sleeve nut; and e. said first and seCond mechanisms being interconnected, whereby said shutter means is timely activated responsive to closing of said limit switch by said switch closing member at a precisely predetermined time when the predetermined shiftable movement of said lenticular screen has been effected to enable photographing the subject from the particular angle of the camera relative to the subject.