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Eugene Doyen
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5646. Doyen, E. March 26. Magic-lantern apparatus; stereoscopes.-An apparatus for viewing stereoscopic, kinematographic, or like views projected by a single or double lantern, consists of electromagnetic arrangements for alternately opening and closing sight apertures for the right and left eye respectively. In the form shown in Fig. I, the apertures 1 and 2 are opened and closed by pivoted flaps 4 and 5, which are actuated by electromagnets 11, 12 and 13, 14, the current through which is broken alternately. Springs 7, 8 serve to return the flaps. In a modified arrangement, each aperture is fitted with two flaps carried on arms working between electromagnets, and in another arrangement a single flap and a single electromagnet are used.
GB190005646D1900-03-261900-03-26Apparatus for use in Viewing Cinematographic or other Pictures.
ExpiredGB190005646A
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