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

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Fig. 4. Magnetic soundhead, door open. Fig. 5. Magnetic soundhead, rear cover removed. which encloses the area in which the magnetic head is located. (The front cover of the shield is attached to the rear face of the door to facilitate access for film threading.) The two sprockets and associated rollers are offset vertically with respect to each other, to permit film threading downward from the feed magazine to the projector, by-passing the magnetic-head section of the soundhead, when using standard photographic soundtrack type of picture film. If 218 March 1954 Journal of the SMPTE Vol. 62