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G. Still Picture Clutch
fne stitl picture clutch consists of the shutter
pulley (50|, the shutter blade and hub {a6} and rhe
still picture clutch lever {55) and uension spring
(12). The ftiction betwee* the shutter blade hub!
coned $urface and the coned surface of the rhutter
pulley is maintained by the tension spring (12)
when the still picture clutch is in the up position,
driving the cam tank and fhe r€st sf the projector
mechanism. In the down position the still picture
lever releases the spring tension, slightly separating
the shutter blade hub and the shutter pulley. To
adiust the still position clearance, spacer {54} may
be added or deleted, as necessary. Lubricate the
bushing with a small amount of molybdenum
disulfide grsase. In
'the
still position th€ heat
filter {57} allows a single frame to be shown
without burning the film, however, the proiector
is not designed to sperate in this position for
extended periods of time. Long still operations will
caus€ Fremature wear to the shutter pulley bushing
and cam tank shaft-
Fq'. #*
51
52
$l
- 3 ? -
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