Automatic image shifting device

Claim 1

An automatic image shifting device characterized in that a picture plate and a sectioning plate are superposed, said picture plate being a single film sheet on which several independent complete pictures sectioned into strips are successively printed, said sectioning plate being adapted to transmit only the strips of one of the pictures by shielding a part of the picture plate, said picture plate and said sectioning plate being relatively displaced at an interval of specified time, said strips each having a specified width, the picture plate being a sheet of film on which said pictures thus sectioned are printed in regular order, the sectioning plate having shielding portions and transparent portions, said shielding portions being substantially opaque so as to transmit only images of strips of said picture plate aligned with said transparent portions of said sectioning plate, the two plates being provided with reinforced peripheral edges respectively formed with notches with the notches of one of said plates out of line with the notches of the other of said plates, a frame surrounding said peripheral edges of said plates, and spring means connected to unnotched portions of said peripheral edges of said plates and to said frame for placing said plates in cloSe contact, and displacing means operatively engaging one of said plates for shifting the latter with respect to the other, and light source means coacting with said plates for showing several respectively independent pictures alternately.