Singer 328 - ADJUSTMENT & MEASUREMENT OF EACH PART OF NEEDLE BED; Dimension Between Rail & Rack

9.
ADJUSTMENT
& I4EASUREMENT
OF
EACH
PART
OP
NEEDLE
BED.
9-1
The.dimension
beth,ecn
Lhe
back
surface
Needle
Bed
Rack
is
l9.O i
o.Z
^/^.
(The..difference
.
between
[he
maximunr
and
snourd
be
rvithin
0.2
m/m)
-
of
the
Rail
and
the
minimum
measurenent
I
t
$
Fig.
7l
l.
fn
case
the
dinension
between
the
Rail
and
Rack
is
too
large:
a)
If
the
dimension
is
too
l,I-in
o',rrn"
Jniu-i;a'i,
ii"-.t"9"
jt
gives
too
much
ol
.or
ria.
-"rii,'ii:-,:;ji.:l:.'"8:;
i#HTi;.j::";ii:i:ir::'"
b)
As
the position
of
the
I
Enan
the
standard
oo"rr?Il*
unit
rec-'des
further
backwarals
or!,
"o*u-ouf-irlriii;iJ3ll
the-needres
selected
by
the
sub
cam.
lnr-Ly
and
collide
with
the
separation
eed
Latch
N
1e
Fi9.7B
Main
Drum
Sub
Drun