Journal of the Society of Motion Picture and Television Engineers (1950-1954)

Record Details:

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Fig. 3. Close-up showing removable, prefocused lamp mounts. onds of time is mounted just below the footage counter. The sound and projection lamps are mounted in cartridge-type lamp mountings which are quickly removable from the front of the machine for replacement of lamps, as shown in Fig. 3. Both holders are keyed for registration and held by detents so that no tools or readjustments are required. Just above the control panel is a lever which rotates through 180° to interlock the sound and picture drive mechanisms. It operates a coupling consisting of an internal gear meshing with an external gear of the same number of teeth, and a one-tooth interval in mesh is equivalent to one sprocket hole. The engagement is spring loaded by the control lever and the indicator light is lighted only when actual mesh is achieved, which may require the rotation of one shaft by a fractional tooth pitch. A high-speed rewind flange is located on the left side of the machine and is normally operated by the constant-speed motor. Several features of the Editer are sufficiently interesting to merit a more detailed description. The picture system employs continuous projection by means of a rotating 1 2sided prism, thus eliminating the noise introduced by the conventional type of intermittent movement. The picture image is projected from the rear on a translucent screen with sufficient light intensity to permit operation in the presence of normal room illumination. The image is 3f X 5 in. of the same Crane, Hauser and Manley: Westrex Film Editer 319