SINGER
107W100
USE ONLY SINGER OILS
and LUBRICANTS
They insure freedom from lubricating trouble and give
longer life to sewing equipment
The following are the correct lubricants for this machine:
TYPE B — MANUFACTURING MACHINE OIL, HEAVY
GRADE
When a stainless oil is desired, use:
TYPE D — MANUFACTURING MACHINE OIL, STAIN-
LESS, HEAVY GRADE
OTHER SINGER LUBRICANTS
TYPE E — THREAD LUBRICANT
For lubricating the needle thread of sewing machines for
stitching fabrics or leather where a thread lubricant is
required.
TYPE F — MOTOR OIL
For oil lubricated motors and plain bearings in power
tables and transmitters.
NOTE: All of the above oils are available in 1 quart,
1 gallon and 5 gallon cans or in 55 gallon drums.
GEAR LUBRICANT
This specially prepared grease is recommended for gear
lubrication on manufacturing sewing machines.
BALL BEARING LUBRICANT
This pure grease is specially designed for the lubrication
of ball bearings and ball thrust bearings of motors and
electric transmitters, ball bearing hangers of power tables,
etc. Furnished in 1 Ib. and 4 Ib. tins.
1423 w
INSTRUCTIONS
FOR USING AND ADJUSTING
SINGER
SEWING MACHINE
NO. 107 w 100
ZIGZAG STITCHING
* A TRADE MARK OF
THE SINGER MANUFACTURING COMPANY
TO ALL WHOM IT MAY CONCERN:
The improper placing or renewal of the Trade Mark "SINGER" or
any other of the Trade Marks of The Singer Manufacturing Company
(all of which are duly Registered Trade Marks) on any machine that has
been repaired, rebuilt, reconditioned, or altered in any way whatsoever
outside a SINGER factory or an authorized SINGER agency is forbidden.
THE IMPORTANCE OF USING
SINGER” PARTS AND NEEDLES
IN SINGER MACHINES
The successful operation of SINGER machines can only be assured
if SINGER parts and needles are used. Supplies are available at all
SINGER Shops for the Manufacturing Trade, and mail orders will
receive prompt attention.
SINGER Needles should be used
in SINGER Machines
These Needles and their Containers
are marked with the
Company's Trade Mark “SIMANCO.*" ;
Needles in Containers marked
"FOR SINGER MACHINES”
are NOT SINGER made needles. >
Copyright, U.S. A, 1914, 1915, 1925, 1935, 1940 and 1948
by The Singer Manufacturing Company
All Rights Reserved for all Countries
DESCRIPTION
Machine 107 w 100 has a rotary hook and is designed for
embroidery work. It makes a zigzag lock stitch formed of a
needle thread and a bobbin thread. The finished seam has the
appearance of hand embroidery.
Speed
The maximum speed recommended for Machine 107 w 100
is 150C stitches per minute. The machine should be run slower
than the maximum speed at first until the parts which are in
movable contact have become glazed by their action upon each
other. When the machine is in operation, the balance wheel
should turn over towards you.
Needles and Thread
Needles for Machine 107 w 100 are of Class and Variety
135x7 and are made in sizes, Nos. 7, 8, 9, 10, 12, 14, 16 and 18.
The size of needle to be used should be determined by the
size of thread which must pass freely through the eye of the
needle, and care should be taken that the size of needle is no larger
than necessary, so that the needle punctures in material will be
small, to prevent disfiguration of the material by “shirring” or
distortion. If rough or uneven thread is used, or if it passes with
difficulty through the eye of the needle, the successful use of the
machine will be interfered with. Use soft finish thread of the same
size for the needle and the bobbin. Use left twist thread, that is,
thread twisted over from right to left.
Orders for needles must specify the quantity required, the
size number, also the class and variety numbers separated by
the letter x.
4
No other needles will give as good results as those sold by
Singer Sewing Machine Company, and no other needles but
those specified should be used with this machine as these needles
135x7 are especially designed for this work.
To Remove the Bobbin
Draw out the slide in the bed of the machine; reach under the
bed of the machine with the thumb and forefinger of the left
Fic. 2. Taking OUT THE Bonnin Case
hand, open the bobbin case latch with the forefinger and lift
out the bobbin case (see Fig. 2).
While the latch remains open the bobbin is retained in the
bobbin case. Release the latch, turn the open end of the bobbin
case downward and the bobbin will drop out.
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To Wind the Bobbin
(SEE Fia. 3)
Fasten the bobbin winder to the table with its driving pulley in
front of the machine belt so that the pulley will drop away from
the belt when sufficient thread has been wound upon the bobbin.
Fra. 3. WINDING THE BOBBIN
Place the bobbin on the bobbin winder spindle and push it
on as far as it will go.
Pass the thread down through the thread guide (1) in the
tension bracket, around the back and between the tension discs (2).
Then wind the end of the thread around the bobbin a few times,
push the bobbin winder pulley over against the machine belt,
and start the machine.
If the thread does not wind evenly on the bobbin, loosen the
screw (A) in the tension bracket and move the bracket to the
right or left as may be required, then tighten the screw.
When sufficient thread has been wound upon the bobbin, the
bobbin winder will stop automatically.
The amount of thread wound on the bobbin is regulated
by the screw (B). To wind more thread on the bobbin, turn the
screw (B) inwardly. To wind less thread on the bobbin, turn the
screw outwardly.
Bobbins can be wound while the machine is stitching.
RN A A AREA A A N
Fia. 4
the tension spring being at the
front (see Fig. 4) and place the
bobbin into it.
Then pull the thread towards
the left into the slot in the
edge of the bobbin case (see
Fig. 5), draw the thread
under the tension spring and
into the second slot in the
edge of the bobbin case; then
To Thread the Bobbin
Case
Hold the bobbin between
the thumb and forefinger of
the right hand, the thread
leading on top from the right
towards the left.
With the left hand hold
the bobbin case open side up,
Ета. 6
pull the thread between the
bobbin and bobbin case and
into the third slot in the
edge of the bobbin case,
then into the delivery eye
as shown in Fig. 6.
TT NE A
7
To Replace the Bobbin Case
After threading take the bobbin case by the latch, holding it
between the thumb and forefinger of the left hand, place the
Fig. 7. Вовв1М Case THREADED AND REPLACED
bobbin case on the center stud of the bobbin case base, release the
latch and press the bobbin case back until the latch catches the
groove near the end of the stud (see Fig. 7). Allow the thread
to hang free and replace the slide in the bed of the machine.
To Set the Needle
Turn the balance wheel over towards you until the needle bar
moves up to its highest point; loosen the set screw in the lower end
of the needle bar and put the needle up into the bar as far as it will
go, with the long groove of the needle squarely towards you, then
tighten the set screw.
AA
8
To Thread the Needle
Pass the thread from the thread stand into the thread guide
at the top of the face plate, down and from left tc right through
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Fig. 8. THREADING THE NEEDLE
the hole in the head of the machine near the top, under the thread
take-up lever and over from left to right between the discs of the
thread controller on the front of the arm of the machine, down
under from right to left between the tension dises up and into the
hook of the tension discs down under the thread controller spring,
up through the wire thread guide on the front of the arm head
and from right to left through the eyelet in the end of the take-up
lever, then down and through the auxiliary take-up and through
the small wire thread guide at the front of the arm head, into the
thread guide near the lower end of the needle bar frame and
through the thread guide at the lower end of the needle bar, then
from front to back through the eye of the needle. Draw about
3 inches of thread through the eye of the needle with which to
commence sewing.
9
To Oil the Machine
The machine should be oiled at the places designated by
arrows as shown in Figs. 9 and 10, and when in continuous use
it should be oiled frequently.
Use “TYPE B” or “TYPE D” OIL, sold by Singer Sewing
Machine Company. See inside front cover for descriptions of
these oils.
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FiG. 9. FRONT VIEW oF MACHINE, SHOWING OILING Points
Remove the face plate and oil all of the bearings which are
thus uncovered, then replace the face plate. Turn back the cap
Which is at the top of the arm of the machine and oil the bearings
Which are thus uncovered, then replace the cap.
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Fig. 10. Back View or MACHINE, SHOWING OILING PoINTS
10
Remove the belt and turn the machine back on its hinges
and apply oil at the places designated by arrows, as shown in
Fia. 11. Base or MACHINE, SHOWING OILING POINTS
Fig. 11; and all other places where there are parts in movable
contact, then bring the machine forward into place.
Occasionally oil the bobbin case bearing in the bobbin case
race.
To Prepare for Sewing
With the left hand hold the end of the needle thread, leaving
it slack from the hand to the needle, turn the balance wheel over
towards you until the needle moves down and up again and the
take-up lever moves to its highest point, thus catching the under
thread; draw up the needle thread and the under thread will
come up with it through the hole in the throat plate. Lay both
threads back under the presser feet.
To Commence Sewing
Place the material beneath the presser feet, lower the presser
feet upon it and commence to sew, turning the balance wheel over
towards you.
To Remove the Work
Have the thread take-up lever at its highest point, raise the
presser feet, draw the work back and cut the threads close to the
goods. Leave the ends of the threads under the presser feet.
- LM EES).
11
Tensions
Ordinarily, for zigzag stitching the upper and under threads
require very little tension; there should be only enough to prevent
the loops from showing along the upper surface of the work.
For straight stitching the upper and under threads should be
locked in the center of the thickness of the material, thus:
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Ca A а | CLA CA
Fic. 12. PERFECT STITCH
If the tension on the upper thread is too tight or if that on the
under thread is too loose, the loops of the under thread will be
visible along the upper surface of the material, thus:
Юта. 13. TiGHT UPPER TENSION
If the tension on the under thread is too tight, or if that on
the upper thread is too loose, the loops of the upper thread will
be visible along the under side of the material, thus:
Fig. l4. Loose Urrer TENSION
To Regulate the Tensions
The tension on the upper thread is regulated by the thumb
nut at the front of the tension discs on the front of the arm of the
machine. To increase the tension turn the thumb nut over to the
right. To decrease the tension turn the thumb nut over to the left.
The tension on the under thread is regulated by the screw
nearest the center of the bobbin case tension spring. To increase
the tension turn the screw over to the right. To decrease the
tension turn the screw over to the left.
12
To Regulate the Length of Feed
The length of feed is regulated by the thumb screw at the
right of the balance wheel. To increase the length of feed turn the
thumb screw over towards you. To decrease the length of feed
turn the thumb screw over from you.
To Regulate the Form of Seam
There are three separate forms of making the overseam with
zigzag stitching, namely: seams varying in width from a zero
Fra. 15 Fi. 16 Fra, 17
point at the extreme right edge of the seam as shown in Fig. 15;
seams varying in width equally on each side of a line central of the
stitching as shown in Fig. 16, and seams varying in width from a
zero point at the extreme left edge of the seam as shown in Fig. 17.
13
Each form of seam is governed by the lever shown in Fig. 18
at the back of the machine. To move the lever, pull back the
£18916
Fig. 18. Sowing LEVER For REGULATING THE POSITION OF THE NEEDLE
spring pin at its upper end, press the knee lifter and move the
lever to the left or right as desired, allowing the pin to enter the
hole in the bracket.
When the lever is in the central position, the lateral vibrations
of the needle can be increased or diminished equally on each side
of a line central of the stitching.
When the lever is in the left position the needle will be caused
to vibrate to the left and the line of stitching can be increased or
diminished laterally from a zero point at the extreme right edge
of the seam. When the lever is in the right position the needle
will be caused to vibrate to the right and the line of stitching can
be increased or diminished laterally from a zero point at the
extreme left edge of the seam.
To Regulate the Width of Zigzag Stitch
The width of zigzag stitch or extent of the lateral vibrations
of the needle is regulated by the knee lifter which can be operated
to make each form of seam any width varying from zero to 14 inch:
14
To Make Seams of Continuous Widths
Set the lever spring pin in the centre hole in the bracket on
the back of the arm of the machine and press the knee lifter until
the needle vibrates to the desired width of the seam, then tighten
the large thumb nut A, as shown in Figure 18.
For making seams of continuous widths as in “striping,” the
index shown in Figure 18 is provided so that the striping position
may be readily returned to after sewing other various ornamental
figures.
To Regulate the Pressure on Material
The pressure on the material is regulated by the thumb screw
on the top of the head of the machine. To increase the pressure
turn the thumb screw over to the right. To decrease the pressure
turn the thumb screw over to the left. The pressure should be only
heavy enough to enable the feed to move the work along evenly.
The Automatic Thread-Check or Controller
The action of the thread controller or automatic thread-
check through which the thread passes just previously to entering
between the regular tension discs is such, when in proper adjust-
ment, that the thread is released as the take-up lever is nearing
the end of its upward stroke, about 5% to 34 of an inch from
its highest position, and is so set when the machine leaves the
factory. In case this does not release the thread early enough,
loosen the Jam nut at rear side of discs and screw the knurled
bushing inward or toward the right; or to make it release later,
screw the bushing outward or toward the left. Be sure to re-
tighten the jam nut to secure the bushing in its desired adjustment.
When in proper adjustment as above indicated, the sewing may be
done with a far lighter tension on the regular tension discs than is
otherwise possible, thereby permitting the use of various kinds
and qualities of thread and at speeds that would otherwise be
impracticable.
№10, 19. SAMPLE oF WORK PRODUCED BY MACHINE 107 w 100
. 20, SAMPLE oF WORK PRODUCED BY MACHINE 107 w 100
17
INSTRUCTIONS
FOR
ADJUSTERS AND MACHINISTS
Thread Controller
The function of the thread controller spring is to hold back
the slack of the upper thread until the eye of the needle nearly
reaches the goods in its descent.
For more controller action on the thread, loosen the stop
screw at the right of the tension and set the stop lower, and for
less action set the stop higher.
To strengthen the action of the controller spring on the
thread, loosen the tension stud screw at the right of the stop
screw and turn the tension stud slightly to the left with a screw
driver, or to lighten its action turn to the right and retighten the
tension stud screw.
Feed
To Take up Lost Motion of the Feed Driving and Lifting
Connections, adjust their hinge and pinch screws.
To Prevent the Feed Dog from Striking at Either End
of the Slots in the Throat Plate. Loosen feed driving con-
nection crank pinch screw and move the feed dog forward or
backward until the longest stitch can be taken without the feed
dog striking the throat plate and retighten the screw.
To Raise or Lower the Feed Dog
Usually when at its highest position, the feed dog should
show a full tooth above the throat plate.
Remove the throat plate; elean the lint and dirt from between
the feed points and replace the throat plate; tip the machine
back and turn the balance wheel toward you until the feed dog
is at its highest position; loosen feed bar slide block crank pinch
screw and raise or lower the feed dog as desired and retighten
the screw.
When raising or lowering the feed dog be careful that its
underside does not drop low enough to strike the hook.
18
Needle, Needle Bar and Hook Timing
The timing or position marks on the needle bar register with
the lower edge of the needle bar frame when the needle 1s in
central position midway between its extreme sidewise move-
ments. This condition may be obtained by placing the lever
at the back of the machine in central position, as shown in Fig. 18.
With the parts in this setting and the needle bar at the down-
ward limit of its movement, the upper mark on the needle bar
should be just barely visible at the under edge of the needle bar
frame; then, as the needle bar rises, the sewing hook point should
pass the needle at its centre just as the lower mark on needle bar
registers with under edge of needle bar frame.
Having ascertained the correctness of the needle bar setting
(by these position marks) the sewing hook may also be timed
by first moving the needle to its extreme left-hand position and
then timing the hook point so that it will pass the needle at a
point just barely above the needle eye, or as “slow” in passing
the needle at this point as will ensure it seizing the thread loop.
In any case, the hook should never be so fast in time as to drag
the needle point on any part of the hook when rising. This
method of hook timing may be found beneficial in handling some
varieties of thread.
Should the needle require slight adjustment to the right or
left, this may be done by turning the needle bar frame pitman
eccentric stud at the lower end of the needle bar frame, and in
case this eccentric stud is removed, be careful in replacing to
have the bulge downward.
Lateral Motion of Needle Bar
The sidewise or lateral motion of needle bar should terminate
as late as possible, just before the needle point enters the fabric.
The time of this motion is important as it also affects the motion
of the sewing hook, and by delaying such motion to as late time
as can be employed without injury to the fabric enables the
thread to be withdrawn from the hook by the take-up at a favor-
able period.
To Time Movement of Needle Bar Frame
Change the time of the needle vibrator driving gear pinion
on arm shaft.
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19
To See if the Needle Bar is Set Correctly
See that the needle is up in the bar as far as it should go.
The needle bar which 1s in the machine when shipped from
the factory has upon it (about two inches from the bottom) two
lines +; Inch apart. When the needle bar is at its lowest and
central position, the upper mark should be just visible at the end
of the needle bar frame.
To Set the Needle Bar in Correct Time. Loosen the needle
bar connecting stud pinch screw and place the needle bar in the
proper position as directed above, then retighten the screw.
To Set a Needle Bar Which Has no Mark. Set the needle
bar so that when it rises 3% inch from its lowest and central
position the point of the hook will be at the centre of the needle
and about 1; inch above the eye.
Fia. 21
Transparent view through the arm shaft connection belt pulley and shaft
showing the feed regulating spindle and feed driving eccentric regu-
lating screw (В), which comes in contact with the cone
of the spindle to gauge the length of stitch.
The figures on the feed regulating spindle head, showing
through the notch in the balance wheel, indicate the number of
stitches to the inch which should be made. If more or less stitches
are made, adjust as follows: Remove screw (A, see Fig. 21) set
the indicator at 8 and the feed dog at its highest point, a full
tooth showing above the throat plate, then adjust screw (B)
until eight stitches to the inch is the result and replace check
20
screw (A) firmly, making the master adjustment, which controls
the other numbers of stitches as indicated.
To Set the Feed Regulator so that a Stitch Longer than
the One Desired Cannot be Made. Turn the spindle head
(L, see Fig. 21) in the direction indicated by the arrow and make
the longest stitch possible; remove check screw (A) and turn
screw (B) down until the machine places the desired number of
stitches to the inch, then turn screw (A) down tightly on screw
(B) as a check. The stitch may then be changed by turning spindle
head (1) for a shorter stitch, but operators cannot make longer
stitches than the limit that screw (B) is set to produce.
— remem em
= кет E.
To Remove the Belt from Within the Arm
A Slide the arm shaft connection belt off the hook driving |
evel pinion shaft belt pulley, remove the feed regulating spindle
and balance wheel; loosen the arm shaft bushing (back) position o SINGER Needles should be used
screw at the back of the arm and remove the bushing; lift the in SINGER Machines
belt up through the arm cap hole as far as possible and draw 1t These Needles and their Containers
out through the space left by the bushing. are marked with the
In replacing the belt see that the hook (sewing) and needle | Company's Trade Mark “SIMANCO.*" ;
are in correct time before running the belt on the lower pulley
and verify the correctness of the timing before commencing to
Sew.
To Remove the Arm Shaft В Needles in Containers marked
Remove screws (B and I, see Fig. 21) and compression screw a | "FOR SINGER MA "
(G); loosen the set screw in the belt pulley, also loosen the screw ; | CHINES
and remove the position screw from the feed lifting eccentric are NOT SINGER made needles. >
and from the needle bar crank; loosen the set screws from the
needle bar frame driving gear pinion (on the arm shaft) and
draw the shaft out from the balance wheel end of the machine.
To Replace the Arm Shaft and Connections
Return the shaft to its place through the belt pulley, the
feed lifting eccentric, the shaft gear, friction washer and needle
bar crank: return the position screws to the belt pulley, feed
lifting eccentric and needle bar crank, and into their position
holes in the shaft; tighten the set screw of each and replace the
balance wheel, leaving the least possible end play to the shaft.
To Remove the Arm Shaft Bushing (front)
After removing the needle bar crank remove the bushing
position screw, from the back of the arm, insert a brass rod through
the arm cap hole and drive the bushing out.
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