Argus C3 - Page 26

Now,
with
the shutter in the releosed
position,
notice thot
the moin drive
column is lotched
by
the RELEASED-POSITION
LATCH,
Fig. 33.
The
releosed-position lotch
is the
port
thot
prevents the
moinspring
from
turning the moin drive column in the
releose
roiotion
(the
releose rototion is indicoted by the curved
orrow in figure 33). Even though the
shufter
isn't
cocked,
there
is o certoin
omount of tension on the moinspring
--
this
is
the
lNlTlAL TENSION.
lf
you remove the
moinspring,-os
we'll
loter
ffi
describe,
you
must
reploce the correct omount
of initiol
tension;
on reossembly.
RELEASED-POSIT'ION
LATCH HOLDS
LUG
ON MAIN
DRIVE
COLUMN
LOWER
END
OF
TRANSFER
SHAFT
FIGURE
33 RELEASED POSITION
The
position
of the moin
drive
column
when the
shutter
is
cocked is only slightly
different
from thot shown
in
figure
33.
lf
you'll slowly
rotote the sprocket in fhe cockingdirection,
Fig. 30,
you con see
the moin drive co-lumn
iump
sliohtly
in
the
direction,
of the
curved orrow in figure 33
--this
slight
movement indicqtes'
thot the moin
drive
column is now in its
"reody"
position.
Let's follow through the cocking cycle to see how
the moin
drive column moves
from
its
releosed position
(held
by
the releosed-
position lotch)
to its
"reody"
position.
As you turn the sprocket
in
the film-odvonce
direction, the
geor
on the
bottom of the
sprocket turns the idler
geor.
The idler
geor
then turns
the moin
rr'
wind
geor
to rotote the wind com ond tension
the moinspring.
z*'
During the cocking rototion, the
cqm
surfoce
on the
wind
com
roises the TRANSFER SHAFT, Fig.
33
--
thot is, pushes the
tronsfer shoft toword the
top
of
the comero.
The upperend of the
tronsfer
shqft
then pushes the releosed-position
lotch up
to disengoge ihe moin drive column.
RELEASED POSITION
27