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Fig. 2
the shaft and gear assembly can be removed from the frame. Shafts can be adjusted and locked in a position to eliminate end play. In replacement, both shaft and gear assembly can be replaced, eliminating re-bushing of frames. All lubrication is done on the gear side, with the exception of the intermittent movement. The old reliable oil can is used for lubricating necessary parts when and where oil is needed. As most necessary equipment and sound producers require manual oiling, this is not an additional burden to the projectionist. All oil cups are painted red, which makes oversight improbable.
“The intermittent movement (Fig. 4) is the star-and-cam double-bearing type.
Fig. 3
End play in the camshaft can be easily adjusted. The pad roller arm is a part of the intermittent movement. Two pad rollers are used, which allow the film to move over the sprocket without friction. A fixed film snubber takes the slap ouo of the intermittent loop and steadies the picture without friction on the film itself.
Fig. 4
Movement can be removed from the frame in a few minutes.
“One of the main features of the Superior Model “A” is that it is a simple, rugged projector; a culmination of the most
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I THE BALLANTYNE COMPANY
Built by Ballantyne to give you the finest sound your money
con buy. Embraces all of the features of the famous PD-50 Series Amplifier, now being used in theatres all over the
world . . . plus the advantages of dual channel operation. Two amplifiers in one, with instant dual channel change-over
switch . . . designed to give you greater dependability, better quality, more listening pleasure. Before you buy, see and
compare the ROYAL SOUNDMASTER PD-56 SERIES DUAL AMPLIFIER, the amplifier with all the features.
Write us today for complete information and name of dealer serving your theatre.
BOXOFFICE Septembei' 13, 1947
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