Wind the bobbins evenly, Relative sizes of needles and threads – SINGER 404K User Manual
Page 11
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Wind the Bobbins Evenly.
Bobbins must be wound evenly in order that they may work properly in
the machine. In winding them, see that the thread is placed smoothly and
evenly.
A
correctly
wound
bobbin
will
insure
the
thread
running
smoothly
from the shuttle and prevent uneven stitching, which may occur if the bobbin
is not properly wound.
15K80,15K110, 99K (New Style), 185K, 201K, 327K, 328K and 329K.
If the thread does not wind evenly on the bobbin, loosen the screw which holds
the bobbin winder tension bracket (see 2, Fig. 8) on the machine bed and
slide the bracket to the right or left as may be required, then tighten the screw.
Always
have
a
sufficient quantity of bobbins
on
hand
and never
wind
thread
on
a
partly
wound
bobbin
containing
thread
of
another
colour.
Bobbins so wound are usually uneven and cause trouble in the bobbin case.
When a rubber ring becomes worn or oil has come in contact with it, the
ring will not grip the wheel and will slip when winding a bobbin. A worn or
oily ring should be replaced.
Relative Sizes of Needles and Threads.
Needles used. Catalogue 2020 (15 x 1
T
ypes
of
F
abrics
T
hread
S
izes
M
achin e
N
eedle
S
izes
M
achin e
S
titches
per
I
nch
H
and
N
eedle
I
nside
S
eams
T
op
S
titching
F
ilmy
M
aterials
Comparable to Net—
Marquisette —Chiffon—
Silk—Chiffon Velvet—
Ninon—Nylon Sheers
100 Cotton
A Silk
Nylon
0
15-20
20-30
10
S
heer
M
aterials
Comparable to Lawn—
Organdie—Dimity—Batiste
—Pure Silks—Paper Taffeta
—Silk—Synthetic Tricots—
Synthetic Sheers
80 to 100 Cotton
A Silk
Nylon
11
12-15
15-20
9
L
ightw eight
M
aterials
Comparable. to Gingham—
Chambray Sheers—Wool
Crêpe—Taffeta—Synthetic
V el ve ts—Satin—Synthe tic
or Wool Jersey
50 to 80 Cotton
A Silk
Nylon
14
12
16
8
M
edium
L
ightw eight
M
aterials
Comparable to Poplin—
Pique—Percale—Cretonne
—Chintz—F aille—Bengaline
—Wool Flannel—Crêpe—
Lightweight Suitings
50 Mercerised
60 to 80 Cotton
A Silk
Nylon
14
12
16
7-8
M
edium
H
eavy
M
aterials
Comparable to Cotton
Vel ve teen—Corduroy—
Gabardine—Rep—Coatings
and Heavy Suitings
Heavy-Duty Mercer
ised
40 to 50 Cotton
A Silk
16
10
12
6
H
eavy
M
aterials
Comparable to Sailcloth—
Denim—T icking—
Overcoatings
Heavy-Duty Mercer
ised
30-40 Cotton
16-18
8
10
4-5
V
ery
H
eavy
M
aterials
Comparable to Canvas—
Duck
40 to 60 Linen
20-24 Cotton
A Silk
18-19
6
8
o
O
P
lastic
M
aterials
Nylon or
Mercerised Cotton
9-11
10
12
9-11
11