Sewing machines
Singer 99-31 — User manual
User manual for Singer 99-31. 64 pages in English. Read the original PDF, download or print a copy without registration.
64 pagesEnglish12.0 MB PDF
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Document details
- Brand
- Singer
- Model / document
- Singer 99-31
- Document type
- User manual
- Language
- English
- Pages
- 64
- File size
- 12.0 MB
- Category
- Sewing machines
- Document date
- Not specified in catalog
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Page 5 · Read text
WHA -1 E E VICE MEANS TO YOU
Over 1400 ~E !ING CENTERS in
the nite alone ser e wo1nen who
sew.
I STRUCTIO J by skilled teachers are given
to purchasers of new SINGER Sewing.Machines
at no extra charge. Budget courses in- hon1e
dressmaking, home decoration and Fashion
Stitching are also available.
REPAIR SERVICE is as co9venient as your
telephone. Whenever your n1achine needs ad-
j us tmen t, a trained SINGER representative
will call at your home. SINGER* Service as-
sures excellent workmanship, guaranteed re-
pairs and SINGER~'f parts. An esti1nate is
given for your approval. ./
And remember, your SINGER SEWING
CENTER and the SINGER Service car are
identified by the f arnous SINGER Red "S".
• • • • • • • • • • • • • • • • • • • • •
r. 3View original page 5Page 6 · Read text
Before Inserting Electric Plug
be sure that voltage and number of
cycles stamped on motor nameplate are
within the range marked on the electric
The SINGER~: Electric Motor meter installed by, the electric power
is loc1.ted at the back of the machine company.
and is regularly furnished for operation
I To Connect the Machine toon an alternating .current of 110-120
Electric Service Line volts, 2 5-7 5 cycles, or on 110-120 volts . .
direct current. Special mot'ors can be Attach the terminal plug at the end· of
furnished for direct or alternating cur- the electric cord to the nearest electrical
rent for any voltage between 50 and outlet, and the machine is ready for op-
250, and for 32 volts direct current. _ eration.
4View original page 6Page 7 · Read text
0 0
Before replacing lens B make sure lens ~
spring is in place. Then insert lens and
• turn it approximately ½ turn to hold
lens behind stops. .
• I CAUTION: Wherr you have finished To turn the spotlight "on" or "off", your sewing, always disconnect the plug turn. th.e knurled switch A, Fig. 2 over from the electric outlet. to the right.· r ) "'
To Remove~ and Replace the Bulb u
/
To .. remove ·bulb, first disengage lens
B, Fig. 2 by pressiqg it inward and turn-
ing it ½ turn to clear the lens stops.
Lens will then drop out into your hand.
!he _bulb is !hen removed by unscr~w~
1ng 1t from its socket in the spotl'.ight.,~
To replace, screw the bulb into the
socket, then replace the lens. Fig. 2. Spotli~ht
• 4
5 .View original page 7Page 9 · Read text
If the machine i u ed ontinuou Iy it
should be oiled dail . If moderately
used an occasional oilin i ufficient. 0 IL ' Apply one drop of oil to each of the
places indicated in Figs. 3, 4, 5 and 6, 01
and carefully clean the machine to in-
sure smooth and satisfactory perform-
ance. Oil holes are provided in the ma-
chine for bearings which cannot be di- •
rectly reached.
'- . 01Remove face plate D, Fig. 3 by taking
out screw C and loosening screw E near
the top of the plate. Slip plate, from
under screw E. Oil the points indicated
in Fig. 4 and then replace face plate D.
Fig. 4. Face Plate Removed,
Showing Oiling Points
7View original page 9Page 10 · Read text
OIL
OIL
OIL
OIL OIL 'OI
Fig. 5. Oiling the Sewing Hook
Fig. 6. Oiling Points in Base of i\tlachine
L..
To oil the n1echanisn1 under the slide, the right of the bobbin ejector at F,
draw the s.lide to the lefL ( as shown in Fig. 5. The slide should then be closed.
Fig. 3) and, after removing the lint and To oil the parts underneath the bed of
dust which may have accumulated ( see the n1achine, turn the ma hine back on
instructions on page 31), put a few its hinge and apply oil to the oil hole
drops of oil on the small piece of felt at an l bearing indi ated in Fig. 6.
8View original page 10Page 11 · Read text
0 • • • • •
The motor requires no lubrication.
IBELT
See that the belt has the correct tension.
This tension should be only enough to
keep the belt from slipping.~ If t~e belt
tension is incorrect, loosen the screw
HH, Fig. 7, about qne· turn and "allow•
the motor to drop downward until the
belt has the correct tension, then
tighten the screw HH.
Fig. 7. S,wing Motn QII 99 MadJi1#
gView original page 11Page 13 · Read text
•••••••
~
" ·,,, $ 4
~~~ ~i~w~-;-:.tl#&~~.r.i~ screw H. A screwdriver slot is provided
for stronger clamping of needle (re-
quired for attachments driven from
needle clamp hub).For perfect stitching, thread should be
selected according to fa bric to be
stitched and needle must be correct size
for thread which must pass freely
through eye of needle.
TO SET THE NE·EDLE
Select the correct needle according to
the table on page 10. Be sure that needle··
is not blunt or bent. Raise the needle
bar to its highest position and loosen
thumb screw H, Fig. 8 in needle clamp.
Push needle with its flat side toward
the right up into needle clamp as far
as it will go, then tighten the thumb Fig. 8. To Set the N eedJe
11View original page 13Page 14 · Read text
• • • • • • • • • • • • • • • • • •
See Fig. 9
Place spool of thread on spool pin
Raise take-up lever S to its highest point
Lead thread in to thread guide 1
Down and from right to left between
tension discs 2
Into the loop of the take-up spring 3
Under the slack thread regulator 4
(not thro_ugh the eye in the thread
regulator)
Up and from right to left through hole
in take-up lever 5
Down through guide 6 on face plate
Down through the lower wire guide 7
From left to right through the eye of
the needle 8
Draw about two inches of threa i
through the eye of the needle with
Fig. 9. Upper Tbreading which to begin ewing.
12View original page 14Page 17 · Read text
If thr ad d s not wind even! y on obbin loosen screw which holds thread guide 3, Fig. 11. Turn guide to left if bobbin winds high on right. Turn guide to right if bobbin winds high on left. When guide is proper 1y cen te:ed, ~hread will wind evenly across bobbin. Tighten guide clamping screw. If the pressure of the bobbin winder pulley N, Fig. 12, against the hub of the hand wheel is insufficient for wind- ing the bobbin, loosen clamping screw P, Fig. 12, and set the bobbin winder pulley in more positive contact with the Fig. 12. Bobbin Winder Adj1,stm nt hand wheel hub. Then tighten clamping screw P.View original page 17
Page 20 · Read text
hold the needle thread, leaving it slack
from the hand to the needle. Turn the
Have the thread take-up lever at its ,hand wheel over toward you until the
highest position. With the left hand, • needle moves down and up again to its
highest position, thus catching bobbin
thread. Draw up the needle thread and
the bobbin thread will come up with it
through the hole in the throat plate as
shown in Fig. 1 7.
Lay both threads back under the presser
foot diagonally across the feed, to the
right or left, depending upon which side
of the needle the material is to be lo-
cated so that when the presser foot is
lov.rered, the threads will be firmly held
between the feed and the presser foot.
Fig. 17. Drawing Up the Under Thread
18View original page 20Page 21 · Read text
TO START SEWING
Be sure to have thread take-up lever 5, Fig. 9
in its highest position.
Place n1aterial beneath the presser foot Q, Fig.
18, turn the hand wheel to bring the point of the
needle into the n1aterial, then I wer the presser
foot by n1eans of presser bar lifter R and start
to sew. Press the controller pedal to start the
machine. The speed depends upon the amount
of pressure on the controller pedal.
Some materials, such as soft finished sheers,
nylons, jerseys, tricots and other elastic and
spongy textiles, require a slight an1ount of assist-
a_nce in feeding the goods during sewing opera-
tions.
Fig. 18. To Start Seu·ing
19View original page 21Page 22 · Read text
H • ·er, t 11u h pull will stretch the BASTING
seam create irreo-ular stitching and The longest stitch, o. 6, on stitch in-
ben the needle. Mo t n1aterials require dicator plate is satisfactorf fo~ basting
onl., guidin f r be t sewing results. and is easily remov_ed by cl~pp1ng every
sixth stitch and w1thdraw1ng the long
The machine ~rill sew its own thread continuous thread.
when se~Ting from one piece of material Machine basting is firmer, more even
to another. However, it is not recom- and much quicker than hand basting.
mended that any sewing be done with a
TO SEW BIAS SE threaded machine unless some fabric
Use a short .stitch when sewing bias or is under the presser foot.
curved seams to increase the elasticin·
of the seam and to prevent seam failu{e
under strain. No change in tensions is TO R A CORNER required.
Pivot on the point of the needle. Stop TO REMOVE THE
the machine when the needle is in the Stop the machine with the thre d ta ·e-
fabric on its upward stroke. Raise the up lever;, Fig. 9 at its highest point. .
presser foot and turn the work as Raise · the presser foot by means ot
desired, the.n lower the presser foot and presser bar lifter R, Fig. 18 draw theresume sewing. fabric back and to the left and ever
20View original page 22Page 23 · Read text
the thread on thread cutler S, l;ig. 18.
Pla e end of threads under presser foot.
CAUTION: . .
When the machine is not 1n use, raise
the presser foot by r:n~ans of presser bar
lifter R to prevent 1nJury to the presser
foot and the feed T, Fig. 18.
0 REGULATE LENGTH
OF STITCH
The machine is adjustable to make from-
6 to 30 stitches per inch, as indicated by
the numerals on the stitch indicator Fig. 19. To Regulate Stitch Length
plate.
The "red dot" indicator U, Fig. 19 Move the lever at V until the· ·r d doc"
in the slot at the left indicates the stitch indicator U is at the d ir d tirch er-
setting. ting. Then turn thumb nut V in\ ard
To regulate the length of stitch, turn until it touch indicator place. The
thumb nut V, Fig: 19 on lever away machine is now t to ti tch the de ired
from the stitch indicator plate as far as numb r of tirche p r inch in a for-
necessary. ward dir ction.
21View original page 23Page 24 · Read text
t E DIR.ft"l~ , , e e o • • o • • • • •
F EED n1aterials. The pressure should be only
heavy enough to prevent the material
from rising with the needle and to en-
able the feed to move the work along
evenly without side creeping. To in-
For Back Tacking, raise the lever to crease the pressure, turn the thumb
the upper end of the indicator plate. screw W, Fig. 2 0 clockwise or down-
The machine will then stitch in a re- ward. To lighten the pressure, turn the
verse direction, making it easy to fasten thumb screw W so that it scre-\VSup-
the ends of seams. ward.
TO REGULATE PRESSURE
ON PRESSER FOOJ
For ordinary sewing, the pressure of the
presser foot on the material seldom re-
quires changing. Heavy materials re-
quire more pressure than light weight
Fig. 20. Thumb Scretv for Regulating
Pressure on Presser Foot
22View original page 24Page 25 · Read text
Thread Tensions
For perfect stitching, the tension on the ~-~
needle and bobbin threads must be Fig. 21. Perfect Stitching
heavy enough to pull the threads to t!1e
center of the thickness of the material
and make a firm stitch, as shown in
Fig. 21. If the needle thr.ead lies straight
along the top side of the material, the ---~ tension on the needle thread is too ~ ~
heavy or the tension on the bobbin Fig. 22. Imperfect Stitching
thread is too light, as shown in Fig. 22.
If the bobbin thread lies straight along
the underside of the material, ·the ten-
sion on the needle thread is too light or
the tension on the bobbin thread is too
heavy, as shown in Fig. 23.
Fig. 23. Imperfect titchin
23View original page 25Page 26 · Read text
TO L
is obtained. Each higher number de-
notes increased tension.
Th ten ion n the needle thread can be To decrease tension, turn the thumb
e ted onl ~ hen the presser foot is nut Z gradually to the left (counter-
clockwise) until the required tension is do" 1n.
obtained. Each lower number denotes The numerals «O" to «9" on dial X,
less tension. Fig. 24 indicate the different degrees of
tension that can be obtained. The num- The tension indicator Y is marked with
bers do not denote size of thread or the signs + and -, which indicate the
ounces of tension. direction in which to turn the thumb
nut Z for more or less tension. When the tension has been correctly set,
note the number at the indicator line Y,
Fig. 24 so that this setting may be re-
gained should the tension be altered for
special work.
To increase tension, turn the thumb
nut Z, ~ig. 24 ~radually to the right
( clockw1se) until the required tension
Fig. 24. To Reg11/a1e
Needle Thread Tension
24View original page 26Page 27 · Read text
The ten ion on the bobbin thread is reg··
ulated b the screw A, Fig. 25 which is
nearest the center of the tension spring
on the outside of the bobbin case. To in-
crease the tension, turn screw A over to
the right. To decrease the tension, turn
this screw to the left.
When the tension on the bobbin thread
has been once properly adjusted, it is
seldom necessary to change it. A cor-
rect stitch can usually be obtained by
varying the tension on the needle thread.
llJiOll Fi . . obbi Thr T
2View original page 27Page 28 · Read text
TO I
ENS,IDN
press in the dial to disengage the pin C,
Fig. 26 in the thumb nut from the dial,
Turn the thumb nut B, Fig. 26 to the and remove the thumb nut and dial,
left until the numeral "O" on the num- stop washer E, tension spring F, indi-
bered dial stops opposite the center line cator G, the two tension discs L, and
between the plus and minus signs, then the thread take-up spring N.
J C B
l
t N
Fig. 26. Needle Thread Tension Disassernbled
26View original page 28Page 29 · Read text
A
-•-it tB,RIAD TENSION
l lake sure that the tension rel~asing pin
J is in place in the stud 0, then place
the thread take-up spring on the stud,
having the tail ( inside the coil) of this ,,
spring in one of the grooves T of the
Fig. 27. Needle Thread Take-up Springstud, and with the large loop N of the
spring resting against the thread take-
up spring_regulator at M, Fig. 27.
~i~. 27 shows the spring in correct po-
sition on th~ stud. The tail of the
spring is not visible in these illustra-
ti~ns,_b~t its locatiqn, inside the spring
coil, 1s indicated by K, Fig. 26.
•
Fig. 2 eedle Thre d Tension
27 Discs i • e,nble IView original page 29Page 30 · Read text
,.,
F E O C B
Pl~ce the t\"\o ten ion discs L, Fig. 22
\vith their flat thread-bearing sides to-
ether in position on the stud O and
ith the loop N of the thread take-up
spring straddling the discs L as shown
in Fig. 28. Next replace the indicator G
v. i th the large open side facing the end
of the stud and so that the plus and
minus marks will be at the top with the Fig. 2!). Reassembling Needle T bread
minus sign to the left. Then insert the Tension .....
tension spring F in the indicator with
clear the first (half) coil of the tension the first (half) coil of the spring strad-
spring as shown in Fig. 30. dling the lower half of the stud, as
shov.'n in Fig. 29. Place the stop washer Next place the numbered dial on the
E on the stud so that the extension will stud so that the numeral "2" is oppo ice
be above the tension stud. the stop washer extension, then pu h
the dial to compress the spring, o that
If the spring and stop washer are 1n the thumb nut can be turned nto the
correct position, the extension S will stutl, carefully guiding the pin C in the
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PDF verified 2026-10-11.