An improved cabinet for containing projecting apparatus for kinematograph films

摘要

145,395. Petra Akt.-Ges. f³r Elektromechanik. Jan. 24, 1920, [Convention date]. Optical-projection apparatus.-A kinematograph cabinet screen, for projection in lighted rooms, is carried by a slide connected to toggle-joint levers which support and lock the screen when drawn out, thus dispensing with counterweights, or other support. The slide c of the screen a is connected to the cabinet sides b by toggle levers d. Fig. 2 shows the slide extended and supported by the toggles.