Singer 1640 - Page 20

Section
4
STITCH
LENGTH
Length
of
the
stitch
is
regulated
by
Stitch
Length
Dial
(Fig.
30)
Turn
the dial
to
right
to
lengthen
and
to
left
to
shorten
the
stitch.
Near
point
A
Fig.
30
is
the
shortest
stitch
and
near
point
B
Fig.
30
is the
longest.
In
general,
short
stitches
are
best
for
light
weight
fabrics;
longer
ones
for
heavy
fabrics.
Most
normal
sewing
is
done
with
stitch
length
set
about
12
stitches
per
inch.
Stitch
Length
(Approximate)
Marks
on
dial
-
—
—
—
—
—
(
point
A
)
(
Point
B
Number
of
stitches
per
inch
No
Feeding
36
20
12
9
7
REVERSE
STITCHING
Press
in
center
button
of
Stitch
Length
Dial
(Fig.
30)
and
hold
for
reverse
stitching.
Fabric
will
immediately
start
feeding
backwards.
Release
button
and
machine
will
resume
normal
forward
stitching.
A
few
reverse
stitches
are
very
useful
for
fastening
beginning
or
end
of
seams
and
darts
without
having
to
tie
threads.
V
Fig3
—18—