Singer 72W19 User manual

Form 1825w
Rev. (548)
INSTRUCTIONS
FOR USING
SINGER
SEWING MACHINE
72wl9
HEMSTITCH
4
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THE SINGER MANUFACTURING COMPANY
Printed in U. S. A.
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From the library of: Superior Sewing Machine & Supply LLC

USE SINGER" OILS
and LUBRICANTS
They insure freedom from lubricofing trouble and give
longer life to sev/ing equipment
The followir)g are the correct lubricants for this machine:
type B — MANUFACTURING MACHINE OIL, HEAVY GRADE
When an oil is desired which will produce a minimum of
stain on fabrics, even after a long period of storage, use:
TYPE D — MANUFACTURING MACHINE OIL, 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,
1gallon and 5gallon cans.
GEAR LUBRICANT
This specially prepored 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 tobies,
etc. Furnished In 1 lb. and 4 lb. tins.
From the library of: Superior Sewing Machine & Supply LLC

1825w
INSTRUCTIONS
FOR USING
SINGER
SEWING MACHINE
Machine 72wl9
No. 72wl9
HEMSTITCH
*A TRADE MARK OF
THE SINGER MANUFACTURING COMPANY
From the library of: Superior Sewing Machine & Supply LLC

TO ALL WHOM IT A\AY 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 ore duly Registered Trade Marks) on any machine that
hasbeen repaired, rebuilt, reconditioned, or altered in any way whatsoever
outside a SINGER factory or an authorized SINGER agency isforbidden.
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 forthe Manufacturing Trade, and mail orders will receive
prompt attention.
SINGER Needles should be used
in SINGER Machines.
These Needles and iheir Containers
are marked with the
Company's Trade Mark "SIMANCO."" i
Needles in Containers marked
"FOR SINGER AAACHINES"
are NOT SINGER made needles. 2
Cop/righf,
U. S. A., 1922,1923,1925,1931 and 1933by
The Singer Manufacturing Company
All
RighU Reserved for All Countries
From the library of: Superior Sewing Machine & Supply LLC

DESCRIPTION
Hemstitch Machine 72wl9 is known as of straight-away feed
construction and has piercers and double needle actuating
device.
The stitch is known as the overedge hemstitch, having each
side of the opening overseamed. The piercer divides the cross
threads and the stitches collect and hold them in the form of bars
or spokes, leaving the clear openings in hemstitch work for which
this machine is famous.
Machine 72wl9 is fitted for straight-away two needle hem
stitch work, having ^ inch openings. It has an independent
piercer driving mechanism, and a detachable auxiliary piercer,
the function of which is to perforate closelywoven, stiff or heavy
material in advance of the needles, which work more freely and
with less spring in such material than when the auxiliary is not
used. While the auxiliary piercer is often used in the production
of "imitation drawn work," it is not required for material previ
ously drawn. For ornamental stitching on Shirt Waists, Neckties,
Underwear, etc.
From the library of: Superior Sewing Machine & Supply LLC

The number before the hyphen or letter designates the Class
to which the machine belongs, and the number after, the Variety
of the machine in its Class.
When supplies for a machine are to be ordered and there
is any uncertainty as to the correct numbers of needles or parts,
the Class and Variety numbers of the machine, as shown on the
number plate, should be given to ensure a correct understanding
of the order.
THREAD
Fine thread should always be used. We recommend Nos.
120 to 150 in cotton thread.
SPEED
The maximum speed recommended for Machine No. 72wl9 is
1300 stitches per minute. Run the machine somewhat slower
than this at first and after the parts have become thoroughly
glazed by their action, increase the speed to the maximum stated.
NEEDLES
Needles for Machine No. 72wl9 are of Class and Variety
130x3 (usually of sizes 10, 12'and 14).
The needle which is best adapted for the work that the
machineis fitted to do is set in the machine at the factory.
The size number of the needle is marked upon its shank.
The Sizes. 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 seriously interfered with.
Orders for needles must specify the quantity required, the
size, alsothe classand variety numbers, separated by x.
The following are details of an intelligible order:
'TOO No. 12—130x3 Needles."
From the library of: Superior Sewing Machine & Supply LLC

Fig. 2. Machine 72wl9. Phantom view, showing places to oil
and reference letters.
a—Thumb Nuts, adjustable for
width of needle vibration,
b—Needle Vibrating Cam and Gear
Segment Lever Connections,
c—Arm Shaft Connections,
d—Arm Shaft.
e—Needle Vibrating Cam and Gear
48 teeth,
f—Arm Shaft Bushing (back),
g—Needle Vibrating Cam and Gear
Stud.
h—Arm Plate (not shown).
1—Needle Vibrating Cam and Gear
Driving Gear. 16 teeth,
ik—Piercer Driving Eccentric, ad
justable for an earlier or lat
er puncture by the piercer.
J—Needle Vibrating Cam and Gear
Segment Lever Connection
Links,
k—Arm Shaft Bushing (front).
1—Take-up Cam.
o—Needle Bar.
p—Needle Bar Connecting Stud,
adjustable for height of
needle bar.
r—Presser Bar Spring,
u—Feed Driving Rock ShaftCrank.
V—Feed Lifting Cam.
w—Feed Driving Rock Shaft.
X—Hook Counter Shaft,
y—Hook Bevel Pinion (left), 24
teeth.
yy—Hook Bevel Pinion (right), 24
teeth.
aa—Hook Saddle (right),
aaa—Hook Saddle (left),
bb—Hook Saddle Screw,
cc—Feed Driving Cam and Gear
Shaft Bracket,
dd—Feed Lifting Rock Shaft and
Crank, adjustable for height
of feed dog.
ee—Feed Bar.
ff—Hook Driving Shaft,
gg—Hook Counter Shaft Driving
Gear, 44 teeth,
hh—Hook Counter Shaft Gear, 22
teeth.
ii—Feed Driving Cam and Gear
Driving Gear, 18 teeth,
jj—Feed Driving Cam and Gear,
54 teeth.
kk—Feed Driving Segment Lever
Crank.
11—Feed Driving Segment Lever,
mm—Feed Driving Rock Shaft Con
nection.
nn—Feed Driving Segment Lever
Clamp.
00—Hook Driving Shaft Bearing,
pp—Feed Regulating Handle,
qq—Feed Regulating Handle Shaft
Crank Link,
rr—Feed Regulating Handle Shaft
Crank.
XX—Hook Bevel Gear Socket (right),
24 teeth.
XXX—Hook Bevel Gear Socket (left),
24 teeth.
From the library of: Superior Sewing Machine & Supply LLC

6
TO OIL THE MACHINE
Use "TYPE B" or "TYPE D" OIL sold only by Singer
Sewing Machine Company. For description of oils, see inside of
front cover. Oil should be regularly used on any surface of metal
which comes in movable contact with another surface.
It is necessary for the easy running of the machine, that all
bearings be oiled. The hook especially should have the attention
of the operator, as a drop of oil occasionally on the bobbin case
base flange prevents excessive friction in the hook race and
assists in making the opening between the stop on the bobbin
case and that on the throat plate; thus, preventing the upper
thread from breaking.
TO SET THE NEEDLES
Turn the balance wheel toward you, to raise the needle bar
to its highest position; hold the needle with the flat side of the
shank toward the other needle (or center), push it up in the
needle holder as far as it can go and tighten the pinch screw.
Care must be taken to set the needles so that they will swing
freely, with their points completely housed, into the grooves of
the piercer on the inside vibration, to assure clear openings.
-tii
From the library of: Superior Sewing Machine & Supply LLC

Fig. 3. Machine No. 72 w 19
TO THREAD THE NEEDLES
Lead the thread from the back spool through the lower hole
in the post thread guide, through the eye of the thread guide
(back), under the thread retainer guide wire, between the thread
retainer and tension discs (back), down under inside thread
controller, up through the upper hole in the take-up lever, down
through the inside guides to the inside needle, and thread the
inside needle from left to right.
From the library of: Superior Sewing Machine & Supply LLC

Lead the thread from the front spool through the upper hole
in the post thread guide, through the eye of the thread guide
(front), under the thread retainer guide wire, between the thread
retainer and tension discs (front), down under outside thread
controller, up through the lower hole in the take-up lever, down
through the outside guides to the outside needle, and thread the
outside needle from right to left.
Hook and Bobbin Case
TO REMOVE THE BOBBIN
Draw back the slides on the bed to uncover the hooks; turn
the balance wheel toward you until the notch in the side of the
bobbin case cap is accessible; lift out the bobbin case cap by
placing your thumb nail in the notch and remove the bobbin.
Fig. 5
Bobbin—Bobbin Case Cap
Fig. 6
Bobbin Case Cap
Threaded
? a {
\ 0 S
Fig. 7
Bobbin Case Cap Parts
From the library of: Superior Sewing Machine & Supply LLC