White-Westinghouse WW-6000 Sewing Machine User Manual


 
3-6.
Adjustments
For
The
Differential
Feed
Differential
feeding
performs
the
function
of
stret
ching
or
condensing
the
edge
of
the
fabric,
since
two
independent
feed
dogs,
one
in
front
and
one
behind
the
needles,
can
be
adjusted
to
feed
at
different
ratio.
The
function
has
the
eeffect
of
producing
a
neat
finish
of
overedging
for
stretchable
and
condensable
fabrics.
*
“N”
indicates
the
neutral
position.
H
Indicator
OoL
Differential
Refer
to
the
below
chart
and
test
stitch
performance
on
a
scrap
of
material
you
are
going
to
use.
.
Differential
feed
Differential
Result
of
-..
Fabric
.
.
,,
ratio
is
set
N
.
feed
ratio
adjustment
-I
Stretchable
Knit
N-2
materials
Jersey
i
N
Unstretchable
and
Medium
uncondensable
woven
J
N
materials
fabrics
..
..:.:...
::.:
s
..
Condensable
Georgette
0.7-N
materials
.
>
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