ADJUSTING THE HEIGHT OF THE FEED
DOG
1 The
maximum
height of the feed dog (1)
j 1 from the surface of the needle plate (2) is
T / *
normally
1
mm.
(In
case
of
the
machine
with
I m the
synchronized
binder,
the
height
of the
feeder should be equal to the surface of
I
adjust
this
height,
turn
the
hand
wheel
so as to raise
the
feed dog to its highest
Draw
out
the
cylinder (4, Fig. 2).
p.
Loosen
the
set
screw
(3),
adjust
the
height
of
the
feeder by raising or lowering it.
Securely tighten the
screw
and replace
the
cylinder.
ADJUSTING
THE
TIMING
OF
THE NEEDLE PLATE,
NEEDLE
AND
FEEDER
Fig. 23
1.
RELATIVE
POSITION
OF
THE
FEEDER
TO
NEEDLE
PLATE
Adjust
the
feed
motion
to
the
maximum
and
loosen
the
screw
(4, Fig. 19).
Set
the
position of
the
feeder
so
that
both
clearances A
and
B(Fig. 22)
are
equal
before
starting feed motion and after finishing the
feed.
Securely
tighten
the
screw.
Fig. 22
2.
THE
POSITION
OF
THE
NEEDLE
AND
NEEDLE
HOLE
OF
THE
FEEDER
To adjust this, turn
the
hand
pulley to raise
the
needle bar to its highest point and put a perfect
needle.
Turning
the
hand
wheel
to
lower
slowly
the
needle
bar,
check
whether
the
needle
descends
to
the
center
of
the
needle
hole
of
the
feeder
or
not.
If
the
needle
does
not
enter
into
the
center
of
the
hole,
loosen
the
screw
(1, Fig. 23)
through
the
window
of
the
arm (5, Fig. 2).
Holding
the
bottom
of
the
needle
bar rock frame
(1,
Fig.
3) move it as may be required to get the
correct
position
to
the
feeder.
Then,
tighten
the
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14
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