Singer 1200-1 User manual

INSTRUCTIONS
-OR US1NC
IN.GER
SEWING
Built-on [
1200-1

To 'ill whom itmay concern:
The placing or renewal ofthe name "Sing-.
pr" Reg. U.S. Pat. Off. i oranyofthe trade
marks ofThe Singer Manufacturing Com-
pany onany machine that has been repaired,
rebuilt, reconditioned, or altered in any way
.-'»•• **".•..• . „;
whatsoever outside a Singer factory orah
authorized Singer agency is forbidden.
Genuine Cinder Needles should be used
in SingerMachines.
TheseNeedles and their Containers
are markedwith the
Company'sTradeMark "SIMANCO." 1
Needles in Containers marked
"ForSinger Machines"
arenot Singer made needles.
i Copyright, U.S. A., 1915, 1920,1921,1923, I&24.
1928,1931, 1932, 1933,1935 and 1936 _.-
by The Singer Manufacturing Co.
All Rights Reserved forall Countries *T
"

INSTRUCTIONS FOR USING
SINGER , ;
ELECTRICSEWINGMACHINE
(P. H. Buili-on Motor I
1200-1
REVERSIBLE FEEDLOCK STITCH
FOR DRESSMAKERS
MACHINE IL'OO-l ONT un.i-: KNX127 AVD
THE SINGERMANUFACTURING COMPANY

-
Description
Machine 1200-1 is especially suited for dress-
makers and homeindustrial use. Itis used on Table
1(K)027 and Stand 46913, as shown on page 1,andis
fitted with a knee lifter for raising and lowering the
prosper foot.
The machine is driven byan electricmotor built
on the back ofits arm, and controlled bya treadle.
An electric Singerlight is also built on the armto
throw light onthe work.
The machine hasa horizontal rotary sewing hook
and makes the lock stitch. 7t has reverse feeding
mechanism by means of which the machinestitches
as readily ina reversedirection asit does ina for-
ward direction.
FIG. 2. REAK VIEW OF MACHINE,
.MriT'iii \NT> PKKJWKR BAK LUTING LKVKR
B. C
D E
j,
FIG. 3. UNDEHSIDB OK TABLE, SHOWINU
DHII* PAN AND K.vtK LIFTER
The knee plate (D, Fig. 3)maybe moved upor
down to suit the operator after loosening the set
screw (E). It maybe swung tothe right or left
after loosening theset screw in the hub (B).
The stop (C) should be set so that the knee lifter
cannot raise the presser barany higher than itis
raised by the hand lifter (A, Fig. 2),in order to pre-
vent strain onthe tension relea.se mechanism. Thc
rear stop (F, Fig. 3) should permit a little loose
motion ofthe knee lever after the presser foot has
beenlowered tothe throat plate.

r
Motor Canbe Operated on Either Alternating
Current or Direct Current
The electric motor, which is located atthe back
of the machine, canbe operated on either alternat-
ing current or direct current, as desired. The
standard windings ofthe motor arefor110 volts,
but motors canbe furnished for any voltage be-
tween 100and 250.
Special motors for32 volts direct current, and
for oO voltsalternatingcurrent and directcurrent,
have also been developed andare available.
Points to Determine Before Connecting
Motor to Electric Service Line
Obtain the following information from the Elec-
tric LightCompanywhich supplies the electric
current forthe circuit to which the motor isto
be connected:
1. If current is direct, what isthe voltage? The
voltage range stamped on the nameplate ofthe
motormustcorrespond to that ofthe circuit.
2. If current is alternating, in addition to the
voltage,what isthe number of cycles? The number
of cyclesstamped en the name plate ofthe motor
mustcorrespond to that ofthe circuit.
The voltage ofany circuitand, if alternating
current, the number of cycles, canbe verified by
looking at the name plate on service watt meter
installed by the local Klectric Light Company.
To Connect the Machine to
Electric Service Line
Push the terminal plug atoneendofthe electric
cord asfarasit will goonthe three-pin terminal
block atthe right ofthe machine, as shown in
Fig. 7. Attach the plug atthe other endof the
cord tothe nearest electric outlet and the machine
is ready for operation.
To Insure Perfect Action of the Machine
When turned by hand, the balancewheel must
always turn overtoward the operator.
Donotrunthe machine with the prcsser foot
resting onthe feed withoutclothunder the presser
foot.
Donotrunthe machine when both bobbincase
and needle arc threaded, unless there is material
under the presser foot.
Donottryto help the machine by pulling the
fabric, lest you bend the needle. The machine feeds
the work without assistance.
The slideover the bobbin case should be kept
closed when the machine isin operation.
CAUTION
When you have finished your sewing,alwaysdis-
connect the plug from the electric outlet.

r
Singerlight
To turn the Singerlight "on" or "off", a switch is
conveniently located atthe front of the three-pin
terminal block, as shown atD, Fig. 7.
To Remove and Replace the Bulb
Do not attempt to unscrew the bulb. Itisofthe
bayonet and sockettype and does not unscrew.
Fid. 4
To Remove the Bulb. Press the bulbinto the
Singarlight socket andatthe sametimeturn the
bulbover toward the machine asfarasit will go,
then withdraw the bulb.
To Insert a New Bulb. Press the bulbinto the
Singerlight socket and turn it over from the machine
until the bulb pin(A, Fig. 4) enters the notch inthe
socket, as shown in Fig. 4.
To Operate the Machine
Raise the presser foot (B)by means of the presser
bar lifter (C)to prevent injury tothe foot (B)and
feed (A).
I-'IG. 5.END VIEW IIF THE MACHINE
Place a piece of clothunder the presser foot and
let the foot downupon it.
Turn on the electric current and depress the
treadle. Asthe pressure on the treadle is increased,
the speed of the machine is increased, the speed
being controlledentirely bythe amount of pres-
sure onthe treadle.Operate the machine hi this
way, without being threaded, until you have be-
come accustomed to guiding the material and
operating the treadle.

r
To Remove the Bobbin
Draw tothe left the slide inthebedofthema-
chine and lift outthe bobbinwith the thumb and
forefinger ofthe left hand, as shown in Fig. 6.
FIG. C>. HEMOVIXG THE ROBBI\o Wind the Bobbin
Itis necessary to understand the stop motion
(C, Fig. 7}by which the balancewheel (B, Fig. 7)
canbe released when required, thuspermitting the
winding of bobbinswithoutrunning the stitching
mechanism.
Release the balancewheel by turning the stop
motion screw (C) overtowardyou. It is necessary
to hold the balance wheel while loosening the stop
motion screw.
"
9
Place the bobbin onthe bobbinwinderspindle
und push itup closelyagainst the shoulder, having
FIG. 7. WINDING THE BOBBIN
the small pininthe shoulder enter the hole inthe
side ofthe bobbin. Putthe spool of thread onthe
spool pin (1). Draw the thread under and between
the tension discs (2)onthebedofthe machine,
then pass the thread upand through the hole (3)
in the leftside ofthe bobbin, from the inside.
Press down onthe bobbin andthe bobbinwinder
latch (A, Fig. 7) will dropdown and hold the bobbin
winder pulley against the hubofthe balancewheel.
Then press the treadle the same asfor sewing.

r
10
Theendofthe threadmust be held bythe hand
until a few coils are wound and shouldthen be
brokenoff. When sufficient thread has beenwound
upon the bobbin, the bobbin winder is automatically
released from the balance wheel.
FIG. 8. ADJUSTMENT OF BOBBIN WINDER
If the pressure ofthe bobbinwinderpulley against
thehubofthe balancewheel is insufficient for wind-
ing the bobbin, pressdown the bobbinwinderuntil
the latch (A) dropsdown and holds it, then loosen
the adjustingscrew (F). With the forefinger, push
back the upper endofthe slotted plate (E)asfar
asit will go,as shown in Fig. 8,andatthe same
time press the bobbin winder pulleyagainst thehub
of the balancewheel,thentighten the adjusting
screw (Fj.
If the threaddoes not windevenly on the- bobbin,
loosen the screwwhichholds the tensionbracket
(2, Fig. 7)in position onthebedofthe machine and
slide the tension bracket tothe right or left, asmay
he required,thentighten the screw.
Bobbins can also be wound while the machine
is sewing.
•
11
To Replace the Bobbin and
Thread the BobbinCase
Hold the bobbinbetween the thumb and fore-
finger of the left hand, the thread drawing onthe
bottom from right to left, as shown in Fig. <).
120932
FIG. 0. REPLACING THE BOHHIN
Place the bobbin inthe bobbin case and draw the
thread into the slot (1, Fig. 10)inthe bobbin case,
as shown in Fig. 10.
£1129^ I
Fin. 10. THREADING THE BOBBIN CASE

F
L2
Draw the threadtoward you between the bobbin
case andthe tension spring until it passes the notch
(2, Fig. 11)inthe bobbincase, as shown in Fig. 11.
13
To Set the Needle
Turn the balancewheel over toward you until
the needle barisatits highestposition, and loosen
the thumbscrew (A, Fig. 13)inthe needle clamp
FIG. 11. BOBBIN CASE THREADED
Then close the slide andatthe same timedraw
the threadinto the longnotch inthe right edge of
the slide, as shown at(3, Fig.12).
FLAT
SIDE
FIG. 13. POSITIONING or N
IN NUKDLE CLAMP
Have theflat side ofthe shank ofthe
needletoward the left as shown above and
put the needle up into the clamp asfaras
it will go. Then tighten the thumb screw.
FIG. 12. UNDER THREADING

14
UpperThreading
(SEE FIG. 14)
Turn the balance wheelovertoward you until
the threadtake-uplever (5)is raised toits highest
point. Place the spool of thread onthe spool pin
atthetopofthe machine- and pass the thread to
the left through the thread guide (1), down, under
and from right to left between the tensiondiscs(2).
With the righthandhold the spool to prevent it
from turning, and with the left handdraw the thread
up into the take-up spring (4) until the thread
enters the retaining fork (3), then pass the thread
from right to left through the hole inthe thread
take-up lever (5), downthrough the guide (6) on
the face plate,into the wire guide (7)onthe needle
bar bushing,into the guide (8)onthe needleclamp
and from right to leftthrough the eye(9)of
the needle.
Draw about two inches of threadthrough the eye
of the needle with which to commence sewing.
15
£11700
VlG. 14. Ul'PER TlIUEADIXG

16
To Prepare for Sewing
Witli the left hand hold the end ofthe thread,
leaving it slack from the hand to the needle. Turn
FIQ. 15. DBA wise UPTHE BOBBIN THREAD
the balance wheelovertoward you until the needle
moves down andup again toits highest point, thus
catching the bobbin thread.Draw up the needle
thread andthe bobbin thread will come up with it
through the hole inthe throatplate, as shown in
Fig. 15.Lay boththreads back under the presser
foot and close the slide.
To Commence Sewing
Place the materialbeneath the presserfoot, lower
the presser foot and commence to sew.
When sewing thick material, itmaybe necessary
to turn the balance wheel overtoward youby hand
to start the machine.Thisshouldalso be done ifthe
machine stops when sewing across thick seams.
17
To Remove the Work
Stop the.machine with the; thread tako-up lever
(5, Fig. 14)atits highestpoint, raise the presser
foot and draw the fabric back andtothe left, pass
the threadsover the threadcutter (A, Fig. 15)and
pull down lightly to severthem. Leave the ends of
the threadsunder the presserfoot.
To Turn a Corner
Stop the machinewhen the needle isatits lowest
point. Raise the presserfoot and turn the work as
desired,using the needle asa pivot,thenlower
the presser foot.
To Regulate the Pressure onthe Material
For ordinary family sewing, itis seldom necessary
to change the pressure on the material. If sewing
fine silk orflimsy material,lighten the pressure by
turning the thumbscrew (C, Fig. 32) onthetopof
the machineover tothe loft so that it screws up. To
increase the pressure, turnthisthumbscrewover to
the right so that it screwsdown. The pressure
should be onlyheavyenough to prevent the material
from rising with the noodle andto enable the feed to
move the workalongevenly. The heavier thema-
terial, the heavier the pressure; the lighter the
material, the lighter the pressure.

18
To Regulate the Direction of Feed
To feed the goods from you, push down the
stitch regulator lever (B, Fig. 16)as far asit will go.
FIG. 16. SHOWING LEVER FOE REVERSING DIRECTION
OF FEED AND REGULATING LENGTH OF STITCH
To feed the goods toward you, raise the stitch
regulator lever (B)as high asit will go.
The direction of feed can be reversed atany point
of a seamwithoutremoving the work from the
machine.
Back tacking is therefore readily accomplished
and the fastening ofthe ends of seams is made easy.
19
To Regulate the Length of Stitch
The machine canbe adjusted to make from 6 to
30 stitches tothe inch as indicated bythe numerals
on the stitchindicator plate (C, Fig.16).
The number of stitches tothe inch that the
machine issetto make is indicated bythe number
which isin line with the upperside ofthe stitch
regulating lever (B, Fig. 16).
To change the length of stitch,loosen the thumb
screw (AT Fig. 16)and move ittothe bottom of
the slot. Thenmove the stitchregulatinglever (B)
until its upperside isin linewith the number ofthe
desired length of stitch. Now move the thumb
screw (A) until the stitch regulating plate touches
the lever(B),then tighten the thumbscrew(A).
The machine will make the same number of stitches
tothe inch in reversedirection when the lever (B)
is moved toits highestposition.
Should forward stitching only be necessary,
move the screw (A) down tothe bottom ofthe
curvedslot and firmly tighten it.The length of the
forward stitch can then be changed by moving the
lever (B) downward fora long stitch or upward
for a short stitch- In this case the lovershould not
be raisedhigherthan the top line inthe scale.
Basting
The longest stitch made bythe machine, Xo. C>
onthe stitchindicator, is found satisfactory for
basting, after loosening the tension onthe needle
thread so that the stitches maybe easily pulled from
the material.
Machine basting is firmerand more even than
thatdone by hand in addition to being muchquicker.
ToSew Flannel or Bias Seams
Use a short stitch and as light a tension as possible
on the needle thread soasto leave the thread loose
enough inthe seam to allow the goods to stretch
if necessary.

20
Tensions
For ordinarystitching, the needle and bobbin
threads should be locked inthe centre ofthe thick-
ness of the material, thus:
Fiu. 17. PERFECT STITCH
If the tension onthe needlethread istoo tight, or
if that onthe bobbinthread istoo loose, the needle
thread will lie straightalong the upper surface of
the material,thus:
Fiu. IS. TIGHT XEEDLE THREAD TENSION
If t.hc tension on the bobbinthread istoo tight,
or if that onthe needle thread istoo loose, the bobbin
thread will lie straight along the underside ofthe
material, thus:
FIG. 19. LOOSE NEEDLE THKEAD TENSION
B
To Regulate the Needle ThreadTension
The tension onthe needle thread canbe regulated
onlywhen the presser foot is down.
The tension index
flange (D, Fig. 20)is
marked witharbitrary
numbers ranging from
1to9 which indicate
different degrees of ten-
sionthat canbe pro-
duced. The numbers do
not denote the amount
of tension ora par-
ticular size of thread.
By noting the number
which is opposite the
FIG. 20. NEEDLE THREAD TENSION pointer Oil the indica-
tor(G) when setfora
satisfactorytension onthe work being stitched, the
number canbe readilyreverted to when a change
is made inthe tension or size of thread.
To increase the tension, turn the thumb nut
(B) over tothe rightuntil the desired number on
the index flange(D)is opposite the pointer, the
higher numbersdenotingincreasedtension.
To decrease the tension, turn the thumb nut(B)
over tothe left, the lower numbers indicatingless
tension.
The tensionindicator (G)is markedwith the signs
+and —, whichalsoindicatewhichdirection to turn
the thumb nut (B)for more or less tension.
To Regulate the Bobbin Thread Tension
The tension onthe bobbinthread is regulated by
the screw (C, Fig. 11)inthe bobbin case tension
spring. To increase the tension, turn the screw (C)
overtowardyou. To decrease the tension,turnthis
screw overfromyou.
When the tension onthe bobbinthread has been
once properly adjusted, itis seldom necessary to
change it, as a correct stitch can usually be obtained
by varying the tension onthe needle thread.

To Remove and Disassemble the
Needle Thread Tension
Loosen theset screw (A,
Fig. 21)and withdraw the
complete tension assembly
from the machine.
Turn the thumb nut
(B, Fig. 22) until zero
onthe indexflange
FIG. 21
(D) is opposite
thepointeronthe
indicator(G),
then press in the
index flange (D)
to disengage the
pin (C)inthe
thumb nut(B)
from theflange
and remove the thumb nutandflange,theflange
stopwasher (E, Fig. 23),tensionspring(F),indicator
C B
FIG. 23
(G), tension releasing pin (J), and tensiondisc assem-
bly (II), which includes the thread take-np spring,
thread guard plate andtwo discs.
23
FIG. 24
To Reassemble and Replace
the NeedleThread Tension
Place (hetwo tension discs (T-, Fig. 24) with then-
convex sides (high centers) facing each other in posi-
tion onthe thread
guard (M). Then
pass the eyelet (N)
of the thread take-
up springunder the
thread guard (M),
having the coils of
the spring above
the tension discs,
as shown in Fig. 24.
Pass the threaded end (O, Fig. 25)ofthe tension
stud through the coils ofthe take-up spring
(P), through the holes
in thetwo tension discs
(L) and thread guard
(M), and through the
eyelet (X, Fig.24)ofthe
take-upspring, having
theendof the take-up
springenter one ofthe
grooves (Q) inthe stud.
Thenplace the tension
releasing pin (J) inthe
tension stud.
26
Hold the parts thus assembled against the shoulder
on the stud and place the tension indicator (G, Fig. 20)

24
on the stud,theninsert the tension spring (F)in
the indicator with the first half-turn ofthe spring
below (he stud or away from the pointer ofthe indi-
cator as shown in Fig. 26. Xmv place index flange
stop washer (E)on t lie stud \vii h its extension toward
the indicator pointer asin Fig. 26.if spring and
stopwasher arein correctposition, the extension
(S) will clear thefirst coil ofthe spring as shown in
Fig. 27.
Place index flange(D, Fig- 26)onthe stud, turn
it so that the number 1 is opposite the pointer on
the tensionindicator ((".), and press it inward until
the thumb nut (15) canbe turnedonto the slud. Try
engaging thepin(C)in different holes intheflange
until oneis found which permits the full range of
tensions from light to heavy to be produced with
one revolution ofthe thumb nut.
FIG. 27
Lower the presser barto relieve the pressure on
thepin(J, Fig. 26). Replace the complete tension
assembly inthe machine,having the long lug
(K, Fig.' 25) enter the hole (U, Fig.28), the pointer
(G, Fig26)atthe top, andthe threadtake-up
spring resting onthe regulatorplate at(V, Fig.28),
as shown in Fig. 20. Push the complete tension in
asfarasit will go, then firmly lighten the set
screw (A).
The tension onthe thread take-upspring (T, Fig.
26) should be just sufficient to take upthe slack of
the needle thread until theeveofthe needle reaches
25
the goods inits descent. A slightvariation inthe
tension on the take-up spring maybe secured by
loosening theset screw (A, Fig. 28) and turning the
tension stud, with the indicator (G, Fig.26), to
the left formore tension orto right for less tension.
However, ifthe correct tensioncannot be secured
without turning the indicator pointer (G)toa posi-
tion inconvenient to read, remove the assembly
from the machine, disengage theendofthe spring
from the groove (Q, Fig. 2o) inthe tensionstud,
revolve the spring and place its end inthe groove
which produces the correcttension.
U
FIG. 28
Ordinarily, the tension onthe needlethread is
regulated by turning the thumb nut (11,Fig.26),
butifthe requiredtensioncannot be produced by
this means, adjust the tension as follows: Press in
the index flange(D, Fig. 26)to disengage the pin(C)
in the thumb nut(B) from theflangeand reset the
pininoneofthe otherregulating holes intheflange,
turning the thumb nut inwardly to increase the
tension or outwardly to decrease it.

2(1
HINTS
Machine Working Heavily. Ifthe machine
runs hardafter standing idle for some time, usea
little kerosene inthe oiling places, runthe machine
rapidly, then wipe clean and oil. See following
pages.
To Avoid Breaking Needles. See that the
prcsscr foot or attachments arc securelyfastened by
the thumb screw. Donotsew heavyseams or very
thick goods with toofinea needle. A large needle
and thread to correspondshould be used on heavy
work (see page 61).
See that the needle isnot bent and avoidpulling
the materialwhenstitching.
Breaking of Needle Thread. If the needle
thread breaks itmay be caused by:
Improperthreading.
Tensionbeing too tight.
The threadbeing too coarse for size of needle.
The needlebeing bent, having a bluntpoint,
or being set incorrectly.
Breaking of BobbinThread. If the bobbin
thread breaks itmaybe caused by:
Improper threading of bobbin case.
Tension being too tight.
Skipping of Stitches. The needle maynotbe
accurately set into the needle baror the needle may
be blunt or bent. The needle maybetoo small or
too large forthe thread in use.
Free Instruction for using the machine is gladly
given atany SingerShop.
27
To Oil the Machine
To insure easy running, the machinerequires
oiling andif used continuously it should be oiled
FIG. 29. FRONT VIE.V, SHO\VI.\ OILING POINTS
eachday-With moderate use, an occasional jilinp
is sufficient. Oil should be applied at each ofthe
placesshown by arrows in Figs. 2!) to33, inclusive.
One drop ofoiiat each point is sufficient. Oil holes
are provided inthe machine for bearings which
cannot be directlyreached.Draw
tothe left the
slide inthebedofthe
machine. Sec that the
thread take-up lever
(5, Fig. 14)isatits
highest point, then
apply oiltothe sew-
ing hook race inthe
bobbin case andoil
hole as indicated by
F'° :JO , the arrows in Fig. 30,
VIEW OF SKWING HOOK,
SHOWIN-G OILING POI-XTS then close the slide.

28
At the back ofthe machine isa roundcoverplate,
fastened bya thumb screw. Loosen the thumb screw
FlG. 31. OlLI.VG PoiMTS AT THE BACK OFTHE MACHINE
(AKM BIIOKEN AWAY TO SHOW OIL HOLE)
and turn the cover plate upward and fasten by
tightening the screw. Turn the balance wheel over
toward you until the connecting rod (B, Fig. 31)is
atits highest point.Then apply a few drops ofoil
through the hole inthetopof tin- machine, tothe
wick which is retained inthecapofthe connecting
rod, as .shown in Fig. 31. Also oilthe other moving
parts andoil hole inside, turn the cover plate down
and fasten itas before.
29
Remove the thumb
screw (A, Fig. 2:)) near
the lower endofthe face
plate and loosen the screw
(D, Fig. 32) near the
upper endofthe face
plate, then raise the face
plate and slip itoff over
the head of the screw(D).
Apply one drop ofoilat
each ofthe places indi-
cated by arrows in Fig. 32,
thenreplace the face plate
and fasten itas before.
FIG. 32.END VIEW,
SHOWING OILING POINTS
To reach the parts underneath thebedofthe
machine, turn the machineback onits hinges and
apply oiltotheoil holes and bearings indicated
by the arrows in Fig. 33.
'112.72
FIG. 33. OILIM: POINTS IN BASE or MACHINE

30
31
To Lubricate the Motor
USE ONLYSINGER MOTOR LUBRICANT
FOR LUBRICATING THE MOTOR. A tube
of thislubricant is sent with the machine.
The SingerMotorLubricant isa specially
prepared non-flowing compound which isnot
affected by varying temperatures. It isthe
onlylubricantwhich will positivelylubricate
the motor. Other lubricants, includingoil,
vaseline or ordinary grease must notbe used
for lubricating the motor, as they are harmful
for this purpose.
When the machine is shipped from the factory,
thetwo motorgreasecups (A, Fig. 34)arefilled
with sufficient SingerMotor Lubricant for approxi-
mately one year's use,underordinarycircumstances.
At least once a year thereafter,turn the machine
back onits hinges and remove the two thumb screws
from the two grease cups (A1 and clean out the in-
terior ofthe cups.Theninsert the tipof the motor
lubricant tube into the greasecups as shown in
Fig. 34, and while holding the t\ibe firmly against
the bottom ofthe grease cups, squeeze about a
quarter ofa tube of the lubricant intoeach cup,
then replace and tighten the thumb screws.
FIG. 31. LUBRICATING THE MOTOR

312
To Clean the Stitch FormingMechanism
After considerable use, the stitch forming mechan-
ism inthebedofthe machine may becomeclogged
with lint andas this may interferewith the perfect
operation ofthe machine, it should be removed.
Itis rarelynecessary to remove the bobbin case
to clean outaccumulated lint, but whenrequired,
the bobbincase maybe removed and replaced as
instructedbelow:
To Remove the BobbinCase
(SEE FIG. 35)
The bobbin case maybe easily removed from the
machine without taking offthe throat plate, al-
though forthe purpose of illustration the throat
plate and feed dog are shown broken away in Fig. 35.
Remove the bobbin from the bobbin case. Turn
the balancewheelovertoward you until theendof
the hook ring (K) is toward the front of the machine,
as shown in Fig. 35. Insert the blade ofthe small
tension screwdriver No. ] 20378, which is furnished
with the machine, into the slot (C) between the ring
andthe edge ofthe spring, as shown in Fig. 3.5. With
a downwardpressure,turn the screwdriver one half
turn tothe right so that the screwdriver will drop
into the slot and unlock the spring.With the right
hand hold the balancewheel to prevent its turning,
and with the left place the screwdriver against the
edge ofthe slot inthe ring and push it around ina
direction opposite tothe hookrotationuntil the
circular cut-out (B) is opposite the spring(D). The
ring and bobbin case may then be lifted out.
To Replace the BobbinCase
(SEE FIG. 35)
When replacing the parts, first place the bobbin
ease intoposition with the finger (A)inthe opening
FIG. 3ii. Ronnie CASE IN POSITION
(THROATPLATE BKOKE.V AWAY TO Snow
CORRECT LOCATION- OF FINGER A)
in the position plate under the feed dogas shown in
Fig. 3Ji. Turn the bobbincaseback and forth
slightly to makesure that itis properly seated, them
place the hookring (K)in positionwith the cut-out
(B) opposite the spring (D). Press the ring into
place and turn itin the direction of hookrotation
until the springlocks itin position. Then replace
the bobbin.

34
Darning or Embroidering
When darning with fine thread, theuseof Darn-
ing Foot 121094 is recommended. Thisdarning foot
can be purchased atany Singer shop or from any
Singer salesman.
A BCD
FIG. 3G. ADJUSTMENT FOR DARNING OR EMBROIDERING
Turn the machineback onits hinges. Unscrew
the thiimli screw (D, Fig. IJIi), which is located in
the lowerhole (C)inthe feed lifting crank (H).
Move the feed lifting crank (B) down so that the
thumb screw (D) will enter the upper hole (A). Hav-
ing inserted the screw in this hole, tighten itfirmly.
The feed is thusrenderedinoperative and will not
interfere with the free movement ofthe work.Bring
the machineforward into place.
Move the stitchregulatorlever (B, Fig. 16) to
its neutralposition atthe centre ofthe slot.
Remove the presser foot and let down the presser
bar lifter to re.store the tension on (lie needle thread
which is released when the lifter is raised.
Draw up the bobbin thread as instructed on page 16.
4
Fin. 37. DAHNING IN PHOCESS
35
When darning
flat work, itis
advisable to use
embroidery
hoops to hold
thework.
Place thework
in the machine,
having theun-
worn part near
the hole under
the needle. Com-
mence the darn-
ing by making a
line of stitchesacross the hole a littlelongerthan
the width ofthe hole.Continuemaking parallel
lines of stitchesacross the hole, moving the work
backward and forward andat the sametimegrad-
ually moving the
work side wise
until the hole is
covered with
lines of stitches
running across
the hole. Then
commence as
before and move
the work length-
wise ofthe hole
until the stitches
across the hole
are completely
covered andthe
darn isfinished.
FIG. 38. DARNING FINISHED