The
needle
is
of
eminent
importance
for
obtaining
a
perfect
seam
and
there
fore
should be
chosen
in
proper
relation
to the
thread
and
fabric
weights
used.
j
For
lightweight
fabrics, a
thin
needle
should
be
emjployed
in
order to avoid
ugly
needle
holes in the fabric.
When
using a thin
needle
with a thick
thread,
the
and,
conversely, when using thin
thread
in a
stitches
may
occur
as
a
result.
Select
the
correct
needle
from
the
chart
below:
thread
is likely
to
break
thick needle, skipping
of
Needle
and
Thread
Ch
arf
Needle
Size
Thread
Weight
Needle
Size
Thread
Weight
70
75
80
85
90
Cotton
Silk
Cotton
Silk
Cotton
Silk
100-80
100 (0)
80-60
80
(B)
60-40
70 (C)
100
110
120
Cot'ton
Silk
Line n
Cotton
Silk
Linen
Col
ton
Silk
Linen
40-30
60 (D)
90-80
30
50(E)
80-50
30
40
60-40
We
warn
you
against
using needles of unknown
wrapper
should
bear
the inscription "Needles for
plus
the
needle
system.
Never use rusty
needles!
Only the exceptional quality of the needle
finisl^
will
ensure trouble-free
sewing
and
prevent
thread
breaking.
Due
to
PFAFF
433, o needle with a rough surface will quickly
get
hot and scorch
the thread.
This
is particularly true of nylon thread which is highly sensitive
to
heat
and fuses easily. |
If the ordinary needle should get
too
hot when stitching dense and resistant
materials or long panels of fabric, it is recommended to exchange it for
o superfinished, chromium-coated System 133 or
[134
needle which may be
procured from us. |
If even o superfinished needle should get too hot, the
PFAFF
433 may be
fitted with a "Schmetz needle cooling device".
This
efficient device is
ideally suited to solve the problem since it requires no
attachments
to the
machine
and
does
not disturb the
operator.
The
draft
of air which is
caused
by the needle motion is not noticeable
at
all. When fitted with this device,
the machine
will
stitch also resistant fabrics with appreciable speed.
origin
even
if the
needle
Pfaff
Sewing
Machines"
12
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