Cinematographic annual : 1931 (1931)

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MACHINERY DEVELOPMDXTS 423 question, so that the sound can be synchronized exactly. Another application is the translation of the film from one language to another, and it can also be used in connection with title music. Box "B" contains an electrical operated Veeder counter. The face of this counter is illuminated by two 10 Watt lamps contained in the lamp houses "A." The image of the counter numbers is thrown on a small screen below the main screen by the lens "C." A contactor "D" attached to the projector is driven by a worm gear "E." This contactor makes one contact for every 1 6 frames, thereby moving the counter ahead one unit.