Bell and Howell 1598, User Manual

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P a n chromatic TQIII & TQIII Specialist User Manual
Page
24
5. By upward pressure at 37a and 37b, raise the first and second sprocket guards until
they click into their open positions. Press down at 37c to open the third sprocket
guard.
6. Holding the film in both hands, slide it under roller "4" and then into the space
between the first sprocket guard and the upper sprocket wheel. Engage the
sprocket holes with the sprocket teeth, then press down the sprocket guard until it
clicks into the closed position.
7. Rotate the manual advance (inching) knob 39a until the three teeth of the shuttle
in the film gate are extended. Now, leaving a free loop at 391b. slide the film partly
into the slot 39c and at the same time carry it under roller 39d and into the space
39e between the sprocket guard and sprocket wheel.
8. Without pushing the film so far towards the projector that the sprocket teeth
engage with the perforations, carry it forward under roller 40a and around the
sound drum 40b, leaving it as in the illustration. Returning to the film gate, and
preserving the loop above the gate, engage the perforations with the shuttle teeth,
easing the film fully into slot 40c and under roller 40d and sliding the perforations
into engagement with the teeth on the sprocket wheel. Press the front 40e of the
sprocket guard until it closes with a click.
9. Slide the film behind the edge guide 41a below the sound drum. From there, and
without pushing the film fully in towards the projector, lead it over roller 41 band
into the space between the lower sprocket guard and the sprocket wheel.
Continuing this action, carry the film downwards and around the roller 41 c and lay
it in the exit slot 41 d below the three rollers. The film should now be correctly
seated round the sound drum and in the exit slot, but not yet pushed into
engagement with the sprockets on the underside of the sprocket wheel.
10. Pull lightly but steadily on the film now extending front rear until the rollers 42a
move as far as they will go in the directions shown by arrows in the illustration. Still
keeping the film under tension press it towards the projector at 42b to bring it into
alignment with the sprocket wheel. Gradually reduce the tension until the
perforations are engaged by the sprocket teeth. Press the lower sprocket guard 42c
upwards until it closes with a click and release the film at the rear. Finally, after
satisfying yourself that the film is lying flat in the gate, swing the lens mount to the
closed position. Rotate the rear spool clockwise to absorb all surplus film between
the rear exit roller and the spool.
11. Check that threading is correct by rotating the manual advance knob 43a in an
upward direction. The loops above and below the gate should grow bigger and
smaller alternately and the amount of film between the sound drum and the top
and bottom of the sprocket wheel should remain constant. If in the course of
threading the loop above or below the gate has become too small, open the
sprocket guard above the lens, ease the film out of engagement with the sprocket
teeth, and "feed" one or more frames into the loop 43b above the gate. As soon as