Optics: motion pictures – Film strip viewing apparatus
Patent
1978-12-11
1980-08-26
Hayes, Monroe H.
Optics: motion pictures
Film strip viewing apparatus
G03B 2100
Patent
active
042192595
ABSTRACT:
A machine to facilitate editing of several films employs sprocket wheels spaced vertically along a central vertical shaft. The sprocket wheels are individually selectively engageable and disengageable from the vertical shaft to permit the synchronization of the films to be adjusted and maintained. In a first embodiment, the supply reels and the take-up reels associated with each sprocket wheel are supported at the same height as the sprocket wheel at the left and right sides of the machine, respectively, in stacked arrangements. In a second embodiment, the supply reels and the take-up reels are supported in terraced arrangements. In both of these embodiments, a central area of the top of the machine between the supply reels and the take-up reels is left clear as a working space, giving the operator easy access to the reels and to the sprocket wheels. Each film passes through only a single sprocket wheel, and therefore is quickly threaded and unthreaded by the operator.
REFERENCES:
patent: 3602606 (1971-08-01), Rigby
patent: 3751142 (1973-08-01), Roller
patent: 3771860 (1973-11-01), Stone et al.
patent: 3856389 (1974-12-01), Gardner
patent: 3912383 (1975-10-01), Stutz
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