Singer 321 KNITTER - Page 48

44
IX
THE
MEASUREMENT
OF
EACH
PART
OF
NEEDLE
BED
AND
ADJUSTMENT
IX
-a
The
dimension
between
the
back
surface
of
Rail
and
Rack
of
Needle
Bed
is
19+0.2
m/m.
The
difference
between
the
max.
and
mini,measurement
should
be
within
0.2
m/m.
19±0.214,
Fig.
56
IX
-a-1
In
case
the
dimension
between
Rail
and
Rack
is
too
large.
(A)
Larger
dimension
gives
too
much
play
to
Main
Drum
engaged
with
Rack
and
causes
the
needles
to
collide
with
Separation
Cam
while
pattern
knitting.
(B)
As
the
position
of
Drum
Unit
becomes
more
backward
than
the
standard
position,
the
needles
selected
by
Sub
Drum
come
out
insufficient
and
collide
with
Separation
Cam.
Main
Drum
Rack
Fig.
57