GATE
SPROCKET
KNOB
SPROCKET SPROCKET
CLAMPS
Fig. 17
Attach
the end
of
the
film
to
the core
of
the empty take-up spool by
inserting
it
in the slot. Give the spool a few turns in the direction in-
dicated by the
arrow
B,
Figure 17, and pull
the
film
to
make sure
it
is
firmly attached. Place the spool on
the
TAKE-UP SPINDLE (Figure
16, page 14), square hole
down.
The
threaded chamber should
now
appear
as
in Figure
17
. .
A
short
trial run should
be
given
to
see
if
the threading is correct
and the loops maintained,
as
described for the lOO-foot chamber.
Close the chamber by replacing the
DOOR and
rotating
DOOR
LOCK
a
half
turn
to
the left (Figure IS, page 14).
If
the
door
does
not
close easily,
the
sprocket clamps
or
the
spools are
not
in
their
proper positions.
Run off
the
leader and set
CAMERA
FILM
METER (Figure 18)
as
described for
the
lOO-foot chamber.
16
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