Industrial sewing machines
Singer 61w91, 61w92 — User manual
User manual for Singer 61w91, 61w92. 27 pages in English. Read the original PDF, download or print a copy without registration.
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- Brand
- Singer
- Model / document
- Singer 61w91, 61w92
- Document type
- User manual
- Language
- English
- Pages
- 27
- File size
- 11.4 MB
- Category
- Industrial sewing machines
- Document date
- Not specified in catalog
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Page 2 · Read text
USE ONLY SINGER OILS
and LUBRICANTS
They insure freedom from lubricating trouble and give
longer life to sewing equipment
SINGER OIL FOR HIGH SPEED SEWING MACHINES
(Cloth and Leather)
For all manufacturing sewing machines except where a
stainless oil is desired.
SINGER STAINLESS OIL FOR HIGHSPEED
SEWING MACHINES
For all manufacturing sewing machines where a stainless
oil is desired.
SINGER MOTOR OIL
For oil-lubricated motorS, power tables, transmitters and
machinery in general.
SINGER STAINLESS THREAD LUBRICANT
For lubricating the needle thread of sewing machines for
stitching fabrics or leather where a stainless thread lubri
cant is required.
OTE: All of the cbove oils are availablein 1 quart, 2 qUort,
l gallon and 5gallon cans or in 55 gallon drums, and can also
besupplied in customer's containers.
SINGER GEAR LUBRICANT
This specially prepared grease is recommended for gear
lubrication on manufacturing sewing machines.
SINGER BALL BEARING LUBRICANT
This pure grease is specially designed for the lubrication
of ball bearings and ball thrust bearings of motors and
electric transmitters, ballbearing hangers of power tables, etc.
NOTE: The above greases are furnished in lb. tubes and 4
1b. and 4 Ib. tins.
Copyrlght,U. 1915, 1922 and 1926,
by The Singer Manufacturing Company
All Rights Reserved for CountriesView original page 2Page 4 · Read text
To allwhom it may concern:
The placing or renewal of the name "Singer'" (Reg. U.S.
Pat. Off.) or any of the trade marks of The Singer Manu
facturing Company 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
GENUINE SINGER PARTS AND NEEDLES
IN SINGER MACHINES
The successful operation of Singer machines can only be
assured if genuine Singer parts and needles are used. Sup
plies are available at all Singer Shops for the Manufacturing
Trade and mailorders willreceive prompt attention.
Genuine Singer Needles should be used
in Singer Machines.
These Needles and their Containers
are marked with the
Company's Trade Mark SIMANCO." 1
Needles in Containers marked
"For Singer Machines"
are not Singer made needles. 2View original page 4Page 5 · Read text
MACHINES OF CLASSES
61w and 62w
DESCRIPTION
Machines of above Classes contain the horizontal, belt
driven, rotating sewing hook with stationary bobbin case
mechanism for making the lock stitch at high speed in fabrics
and light leather work,and are distinguished for absolute cleanli
ness of operation, a feature especially desirable in stitching
white goods.
The link thread take-up is a most.efficient device for its
purpose. It consists of a light and strong lever and link, working
silently without the use of cam or spring. It is capable of the
highest speed without vibration of the machine, and with least
friction and wear of parts. The bearings and wearing parts
are of such generous size and construction that the machines
do their work under severe conditions for a long time without
showing appreciable wear.
Machine 62w 1 is designed forsewing tubular articles; other
wise similar to Machine 61 w 52.View original page 5Page 7 · Read text
Machines, and Needles Adapted for Them
61 w 52 61 w 66
61 w 62 61w 156 USE NEEDLE 135X 5
61w 63 61 w 157
61 w 72
X 1 61 w 74 USE NEEDLE 135
61 w 76
61 w 7 61 w 80 USE NEEDLE 135 X 4
61 w 84
61 w 154
The needle which is best adapted for thework that the
machine is fitted to dois set in the machine at the factory.
The size No. of the needle is marked upon its shank.
The successful use of a sewing machine depends largely
upon the quality and size of the needle in use. When needles
are to be ordered the Class and Variety of the machine, as shown
by its number plate, and the line of work to be accomplished
must be considered, therefore the order should callfor the style
and size of the needle required,asshown by the Needle Table and
the list of Relative Sizes of Needles and Thread. The size to
be used should be determined by the size of the thread, which
must pass freely through the eye. 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.
Orders for needles must specify the quantity required, the
size, also the class and variety numbers separated by x. In
theclass and variety of needle of which various styles of points
are made the order should also specify the style of point required.
The following are details of an intelligible order:
"100 No. 14 135 x 4 Reverse Triangular Point Needles."
100No. 12 135x5 Needles."
The best results will be obtained in using the needles fur
nished by the Singer Sewing Machine Company.View original page 7Page 8 · Read text
RELATIVE SIZES OF NEEDLES AND THREAD
NEEDLES FOR LEATHER WORK FOR CLOTH WORK
Size Cotton Silk Cotton Silk
Naumbers f Thread Thread Thread Thread
Needles
100 to 150 O00 to00 10 70 O0 and O
90 100 00 11 60
80 90 12 50
13 40 70 80 A
14 36 70 A
15 30 50 60 B
50 C 16 30 E 40 (
18 24 30 40 C
20 20 24 30 D
16 24 E 22 16 |
Twist, Linen and Cotton Thread and Needles
To make a smooth,even stitch with your sewing machine,
use good, firmly twisted and smoothly finished thread, that
other needlespasses freely through the eye of the needle. No
will give as good results and satisfaction as those recommended
above.
In using slack twist or uneven silk, should it be frayed or
roughened, the needle is too fine or too sharp, or has a hooked
point, made by striking the throat plate. A hook may be easily
honed off the needle.
For ordinary work use the samesize of thread on the bobbin
as in the needle.
Ready wound bobbins for Singer Sewing Machines are sold
by thread manufacturers.View original page 8Page 9 · Read text
7
L
IL L 39
10
QUL
51A
Fig. 2
To Oil the Machine
Good oil is the life of a machine, and should be regularly
used on any surface of metal which comes in movable contact
with another surface.
The large hole on top of the arm near the take-up lever is
for serew driver use.
There are five oil holes outside of the arm and bed as follows:
1st. Back of the large hole, to oil the conduit to the take-up
lever hinge stud (see Fig. 3).
2nd. The oil packing wick thumb serew, to oil the arm
shaft bushing (front) and conduits (see Fig. 3).
3rd. Near the balance wheel, to oil the arm shaft bushing
(back).
4th. Near the bed on the inside of the arm, to oil the hook
shaft bushing (back).
5th. In the center of the bed plate, to oilthe hook shaft
bushing (tront).
Move the arm cap aside, to oil the feed connections.
Move the face plate aside,to oil the needle bar connecting
link stud, the needle and presser bars,and the slide behind the
link (see Fig. 3).View original page 9Page 10 · Read text
8
Tip the machine back, to oil each end of the rock shafts.
the feed bar, slide block, and the connection hinge screws (see
Fig. 2).
Oil the bearings at both ends of the treadle, pitman and
shaft, and all other movable parts of the transmitter, ete.
OIL
OIL
OlL
PAD
Fig. 3
Oil Conduits
Fig. 3shows that the shaft and studs are hollow and illed
with oil wicking, as are also the conduits for conducting the oil
from the shaft through the needle bar crank to the needle bar
driving and the take-up driving studs. The centrifugal force
works the oil from the shaft to the bearing and through the
conduits and studs. There is a conduit from the top of the arm
to the stationary take-up stud.View original page 10Page 11 · Read text
Oilthe bobbin case bearing in the hook race each time a
bobbin is replaced.
When a machine has been neglected or becomes gummed,
it should be soaked well with benzine and run for a short time,
keeping allparts flooded with oil, until it runs freely, then wipe
thoroughly to remove all old oil and dirt and oil as before
directed.
Never run the machine with the presser foot down except
when sewing, as it will seratch the presser foot and dull the teeth
of the feed dog.
To Set the Needle
Push the needle up in the needle bar as far as it will go,
with the long groove to the right, or toward the column of the
arm,and secure it firmly with the set screw.
It may be necessary to turn the needle slightly to the right
or left for some threads, if stitches are missed.
Operators are liable to use needles which are too fine.
Better results usually follow theuse of a larger size.
For ordinary work use the same size of thread on the bobbin
as in the needle.View original page 11Page 12 · Read text
10
FOR MACHINES WITHOUT OPENERS
To Thread the Bobbin Case
Place the bobbin in the bobbin case, with the thread leading
from the top toward you; hold the thread with the right hand
LATCH
FiG. 4
(see Fig. 4), guide it into the notch (close the latch) and draw
until the thread is under the spring on the bobbin case, or
drawing the thread up through theneedle hole in the throat plate
willdraw the thread under thespring asyou start to sew.View original page 12Page 13 · Read text
11
FOR MACHINES WITH OPENERS
To Remove the Bobbin
Draw out the slide in thebed of the machine. Reach down
with the thumb and forefinger of the left hand, open the bobbin
case latch with the forefinger and lift out the bobbin case cap.
While the latch remains pen, the bobbin is retained in the bobbin
case cap. Release the latch, turn the open end of the bobbin case
cap downward and the bobbin will drop out.
To Thread the Bobbin Case Cap
Hold the bobbin between the thumb and forefinger of the
righthand, the thread leading on the bottom from the left toward
the right.
With the left hand hold the bobbin case cap open side up and
place the bobbin into it.
W 2416
FIG. 5
Then pull the thread into the slot in the edge of the bobbin
case cap and under the tension spring and into the notch in the end
of the tension spring.
To Replace the Bobbin Case Cap
After threading, take the bobbin case cap by the latch, holding
it between the thumb and forefinger of the left hand, place the
bobbin case cap on the center stud of the bobbin case base.
Release the latch and press the bobbin case cap back until the
latch catches the groove near the end of the stud.View original page 13Page 14 · Read text
12
To Thread the Needle
Guide the thread as shown in Fig. 6, and as the thread is
Dassed around between the tension discs draw it up to the right
untilit passes into the fork above the thread controller.
<STOP
SCREW
E 5238
FIG, 6
Roller Presser
For convenience in threading, press down on the roller and
swing it out to the left.View original page 14Page 15 · Read text
13
To Wind the Bobbin
(SEr FiG. 7)
Fasten the bobbin winder tothe table with its driving pulley
in front of the machine belt,so that the pulley will drop away from
thebelt when sufficientthread has been wound upon the bobbin.
A
E4194
FIG. 7, 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 dises
(2). Then wind the end of the thread around the bobbin a
few times, push the bobbin winder pulley over againstthemachine
belt and start the machine.
When sufficient thread has been wound upon the bobbin,
the bobbin winder will stop automatically.
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 asmay be required, then tighten the screw.
The amount of thread wound on the bobbin is regulated by
the screw (B). To wind more thread on the bobbin, turn the
serew (B) inwardly. To wind less thread on the bobbin, turn
the serew outwardly.
Bobbins can be wound while the machine is stitching.View original page 15Page 16 · Read text
14
To Commence Sewing
With the left hand take hold of the needle thread, leaving
it slack between the hand and the needle, turn the balance wheel
toward you untilthe needle moves down and the take-up lever
rises to itshighest point, thus catching the bobbin thread; draw up
the needle thread and the bobbin thread with itthrough the needle
hole in thethroat plate and lay both threads back across the feed
dog: then place the material beneath the needle, lower the presser
foot upon it, turn the balance wheel toward you and commence
to seW.
The Tensions
To regulate the tensions, please observe the following:
FiG. 8
The upper and under threads should lock in the center of
the material as shown in Fig.8.
FIG. 9
its tension, or if If the upper thread is held too tightly by
the under thread is too loose, the thread will be straight along
the upper surface of the material as shown in Fig. 9.
EII319
FIG. 10
If the under tension is too tight or the upper too loose, the
thread will be straight along the under side of the material, as
shown in Fig. 10.
To Regulate the Tension on the Under Thread
The tension on the under thread is regulated by the serew in
the center of the tension spring on the outside of the bobbin case
cap. To increase the tension turn this screw over to the right.
To decrease the tension turn this screw over to the left. See that
there is no lint or dirt under the tension spring.View original page 16Page 17 · Read text
15
Correctly made stitches, as shown in Fig. 8, can usually be
obtained by regulating the upper tension only, turn the tension
thumb nut inwardly to tighten and outwardly to loosen the
tension (see Fig. 6).
Caution. Do not try to adjust the upper tension when the
presser foot is up,as the tension is then released.
Feed Regulator
The figures on the feed regulating spindle head at the right
of the balance wheel, showing through the notch in the balance
wheel, indicate the number of stitches to the inch which the
machine should make. Turn the spindle head until the figures
representing the desired number of stitches to the inch appear
in the notch.
To Turn a Corner
Stop the machine while the needle is rising, but before it is
out of the material, raise the presser foot and turn the corner,
using the needle as a pivot.
In sewing where special elasticity is required, as on bias
seams or very elastic material, hold the work back slightly, to
keep the cloth stretched while being sewed.
The Pressure on the Material
The pressure of the presser foot or of the roller presser
should be only heavy enough to assure an even length of stitch
and to prevent the work from rising with the needle; if too heavy
it will make the machinerun harder and be of no benefit.
The pressure is regulated by turning the thumb serew (see
Fig. 6) at the top of thearnm head through which the presser
bar pasSses.
Roller Presser
The roller should be set close enough to the needle to steady
it and prevent it from staggering, and far enough back to prevent
the leather from stretching.View original page 17Page 18 · Read text
16
To Remove the Work
Raise the presser lifter, turn the machine by the balance
wheel until the take-up lever is at its highest point and draw
thework from you. Ifthe threads do not draw out easily,the
take-up lever is not in the right position, as directed. If the
machine is stopped as directed, the needle will not be unthreaded
in starting to sew, even if only a short end is left through the
needle.
For convenience in taking out the work, the tension of the
upper thread is released by raising the presser foot with the
lifter; but is not released by thick goods or seams passing under
the presser foot. Do not try to adjust the upper tension when
the presser lifter is up as the tension is then released.
Causes of the machine not working properly will usually
be found in the tension not being correctly adjusted, or its discs
may be clogged with lint or knots of thread, or the thread may
be too coarse or too fine for the needle, orthe needle and thread
too coarse or too fine for the throat plate, or the needle bent or
blunt. Seethat a straight needle is pushed up in the needle bar as
far as it willgo; any particle of lint or dirt which prevents it from
going up can be removed through the eross hole in the needle bar.
Knee Lifter
The knee lifter is used for raising the presser foot by knee
pressure against the knee plate, leaving both hands free to manip
ulate the work. If the knee lifter does not raise the presser foot
satisfactorily,adjust the rod in the rock lever which connects
with the rod in the arm of the machine to lift the presser foot.View original page 18Page 19 · Read text
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 reaches
the goods in its descent.
For more controller action on the thread, loosen the stop
serew (see Fig. 6) 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 (C, see Fig. 7) 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 tighten the tension stud serew.
Feed
To take up lost motion of the feed connections, adjust their
hinge and pinch serews.
Toprevent the feed dog from striking at either end of the
slots in the throat plate, loosen the feed driving connection crank
pinch serew (51A, see Fig. 2) and move the feed dog forward
orbackward 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.
Removethe throat plate; clean 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 the feed lifting connection crank
pinch screw (51, see Fig. 2) and raise or lower the feed dog as
desired and retighten the serew.View original page 19Page 20 · Read text
18
When raising or lowering the feed dog be careful that its
underside does not drop low enough to strike the hook (sewing).
To See if the Needle Bar is Set Correctly
See that the needle is up in the bar as far as it will go. The
needle bar which is in the machine when shipped from the factory
has upon it (about 1% inches from the bottom) two inch
apart. lines, When the needle bar is at its lowest position, the upper
mark should be just visible at the end of the bushing.
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 BarWhich Has no Mark. Set the needle
bar so that when it rises inch from its lowest position the
point of the hook will be at the center of the needle and about
inch above the eye.
To See if the Hook is Correctly Timed
Remove the throat plate and turn the balance wheel toward
you until the lower mark across the needle bar, as it is going up,
is just visible at the end of the bushing; now, if the needle bar
and hook are in correct timethe point of the hook willbe at the
center of the needle and about to inch aboveits eye.
To Time the Hook
Loosen the serews inthe hook shaft connection belt pulley
and turn the balance wheel toward you until the needle bar
goes to its lowest position and upward until the lower mark
across the needle bar is just visible at the end of the bushing,
then stop turning and hold the wheel firmly; with the left hand,
turn the hook until the point is at the center of the needle t
inch above its eye seethat the end play to the shaft is almost
eliminated, then retighten the pulley serews.
To Remove the Hook
Loosen the serews which hold the belt pulley, remove the
throat plate and draw the hook and shaft out.View original page 20Page 21 · Read text
19
To Set the Hook To or From the Needle
Loosen the set screws that hold the belt pulley on the hook
shaft and the set screw at the right of the hook (see Fig. 4) that
holds the bushing, and carefully drive the bushing to the right,
to set the hook closer to the needle, or to the left, to set it farther
from the needle. After carefully adjusting and timing the hook
to the needle, tighten the serews that hold the bushing and the
pulley. Leave the least amount of end play possible to the shaft,
for lubricating purposes.
B
F
G.
FiG. 11. Transparent view through the arm shaft connection belt pulley and
shaft, showing the feed regulating spindle and adjusting screw
(B),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 serew (A, see
Fig. 11),set the indicator at 8 and the feed dog at its highest
point, a full tooth showing above the throat plate, then adjust
serew (B) until eight stitches to the inch is the result and replace
check serew (A) firmly, making the master adjustment, which
controls the other numbers of stitches as indicated.View original page 21Page 22 · Read text
20
To Set the Feed Regulator so that a Stitch Longer than
the One desired Cannot be made. Turn spindle head (L, see
Fig. 11)toward you 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)asa check. The stitch may
then be changed by turning spindle head (L) for a shorter stitch,
but operators cannot make longer stitches than the limit that
set to produce.screw (B)is
FOR MACHINES WITHOUT OPENERS
THROAT PLATE
HQOK
61
THE UNDER
TENSION
SPRING.
GIB
Fig. 12 FIG. 13 FIG. 14
BoBBIN BOBBIN CASE
Figs.13 and 14 show the Hook Gib open and the Bobbin Case removed.
To remove the bobbin case from the hook to thoroughly
clean the bobbin case, remove the screw from the gib and open
the gib as shown in Fig. 13; turn the balance wheel until the
point of the hook is toward you and lift out the bobbin case.
See that there is no lint or dirt under the tension spring.View original page 22Page 23 · Read text
21
When returning the bobbin case to the hook, have the
positions the same as when removing it, be sure to have the
notch at the top of the bobbin case entered by the stop on the
throat plate, then close the gib and turn the screw in firmly,
being careful not to damage the head of the serew,
When returning the throat plate to its position be sure
that the stop on the throat plate enters the notch at the top
of the bobbin case.
FOR MACHINES WITHOPENERS
HOOK
8OBB N
GIB
BOBBIN CASE W 2415 BASE 60BB)N CASE
CAP
Fig. 15. Hook Gib open and the Bobbin Case removed.
To remove the bobbin case from the hook to thoroughly clean
the bobbin case, remove the bobbin case cap then remove the
Serew from the gib and open the gib as shown in Fig. 15; turn the
lift out is toward you andbalance wheel until the point of the hook
the bobbin case base.View original page 23Related documents and language editions
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From the ISMACS International. Original publisher and archive notices are retained.
Check the model and edition against your equipment.
PDF verified 2026-10-11.