Singer 71K101 User manual

• INSTRUCTIONS
FOR USING AND ADJUSTING
SINGER
SEWING. MACHINE
71K101
FOR MAKING STRAIGHT BUTTONHOLES
WITH SQUARE BARRED ENDS
From the library of: Superior Sewing Machine & Supply LLC

USE SINGER* OILS
and LUBRICANTS
They insure freedom from lubricating trouble and give
longer life to sewing equipment
The following are ihe correct lubricants for this machine:
TYPE B — MANUFAaURING 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
1
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 ore available in 1 quart,
1gallon
and 5gallon cans.
GEAR LUBRICANT
This specially prepared grease Is recommended for gear
lubrication on manufacturing sewing machines.
BALL BEARING LUBRICANT
This pure 0'rease 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 lb. and 4 lb. tins.
From the library of: Superior Sewing Machine & Supply LLC

Form K6441
(861)
INSTRUCTIONS
FOR USING AND ADJUSTING
SINGER
SEWING MACHINE
7IkI0I
HIGH SPEED
GEAR DRIVEN FEED
THE SINGER MANUFACTURING COMPANY
*A Trademark of THESINGER MANUFACTURING COMPANY
Printed in U.S.A.
From the library of: Superior Sewing Machine & Supply LLC

Copyright under international Copyright Union
From the library of: Superior Sewing Machine & Supply LLC

DESCRIPTION
Machine 71k101 is designed for making straight buttonholes
in cotton, linen, rayon and silk fabrics, knit goods,etc.
This machine has a positive, gear driven, intermittent feed
which controls the movement of the work clamp so that the
stitches are uniformly spaced around the buttonhole under all
conditions.
By simply changing the stitch regulating gear, the number
of stitches in the buttonhole can be varied, as desired. (See list
of stitch regfulating gears on page 16.)
The stop motion mechanism of this machine includes a pair
of gears having a ratio of 2 to 1 for reducing the speed of the
stop cam to one-half of the speed of the -sewing shaft. The stop
cam has two stop notches located diametrically opposite each
other so that when the stop motion mechanism is engaged, the
stop cam turns only a part of a revolution before the interlocking
rod drops into one of the notches to stop the machine. Asingle,
extra long spiral spring in the stop cam gear helps the machine
to stop without shock.
Machine 71k101 makes purl stitch buttonholes with square
barred ends, the hole being cut from f to f inch long. Both
threads and the buttonhole are cut after stitching. Buttonholes up
to 1 inch long can also be made on this machine by using Clamp
Check Complete 249758, Clamp Check Holder 271946, Fibre
Washer 40045 and a knife of the required length. These parts will
be furnished, on
order, in place of the regular equipment, or they
can be supplied additionally at an extra charge.
Unless otherwise ordered, the 71k101 machine will be sent out
fitted with a f inch knife and three additional knives for §, ^ and
J inch buttonholes.
Whip Stitch Buttonholes can be produced on above machine
by substituting the following parts in place of similar parts on
the machine;
249633 Shuttle Bobbin Case complete
40028 Shuttle Body
Stitch Regulating Gears for Whip Stitch
For Machine 7IK10I
249682 - 30 Teeth
249725 - 36 "
249727 - 40 "
249744 - 45 "
For other gears and specifications see page 16.
From the library of: Superior Sewing Machine & Supply LLC

Speed
The maximum speed recommended is 2000 stitches per minute.
When the machines are in operation, the tight machine pulley
should turn over to the left as indicated by the arrow in Fig. 5.
To Set Up Machines on SINGER* Universal
Power Tables
The machine is usually set so that its face plate is toward
the edge of the table nearest the operator, about midway between
the leg sections.
rront Pd<j<! of Table
Fig. 2. Underside of Power Table,
showing Belt and Chain Guides for Low Shaft Drive
One hole should be bored for the chain to connect with the
lever ( B, Fig. 5) and another hole for the chain to connect with
the starting lever (D2, Fig. 6).
There are four treadle chain pulleys (C, H, J and K, Fig. 2).
each consisting of a bracket and asingle pulley. Fasten one of
these pulleys {K, Fig-. 2) to the underside of the table directly
below the clamp lifting lever (B, Fig. 5) and in line with the
chain adjusting slide on the left hand treadle. Fasten the second
pulley (II) to the underside of the table directly over the chain
acljnsting^ slide and in line with the first pulley (K). Fasten the
1)iillc\- {(1. Fig. 2) to the underside of the table direct))' below the
starting lever (D2, I-'ig. 6) and in line with the chain adjusting
slide on the right hand treadle, l-^asten the fourth pulle)' (J. Fig.
2) to
the underside of the table directly over the cliain adjusting
slide on the rigiit hand treadle and in line with the pulley ((1).
Bass one chain from the left treadle straight up and over the
pulley (II) and under the pulley (K), then up through the hole
From the library of: Superior Sewing Machine & Supply LLC

in the table and fasten to the clamp lifting lever (B, Fig. 5).
Pass the second chain from the
right treadle straight up and over
the pulley (J) and under the pulley (G), then up through the
hole in the table and fasten to the starting lever (D2, Fig. 6).
If the machine is to be driven by a pulley mounted on either
a floor or table shaft to the rear of the idler bracket complete (L),
the idlers and idler arm should be assembled with the pulleys
mounted in the two holes of the arm farthest from the vertical
rod hole, as shown at N, Fig. 3. Should it be necessary to drive
the machine from a shaft lying between the rear of the machine
and the front of the table, the two pulleys should be assembled
with the pulleys mounted in the holes of the arms nearest to the
vertical rod hole, as shown at M, Fig. 3.
Two belt holes (O, Fig. 2) should be bored in the table directly
below the tight machine pulley according to the location shown
by the blueprint furnished with the machine and the belt idler
(L, Fig. 2) mounted on the underside of the table directly below
these
two holes (O). The belt should he applied around the pulley
on the shaft, around the idlers, up through the holes (O) in the
table and around the machine pulley as instructed on page 19.
To Set Up Machines on Universal Power Tables
with SINGER* Electric Motor
The foregoing instructions should be followed with the ex
ception that the belt idlers (L, Fig. 3") and arms must be assem-
From the library of: Superior Sewing Machine & Supply LLC

hied as illustrated in Fig. 3. The belt should be applied around
the pulley of motor, around the idlers, up through the holes (O,
Fig. 3) in the table and around the machine pulley as instructed
on page 19.
Machines Run in Pairs
When machines are run in pairs and driven from a table or
floor shaft, they must have belt and belt idlers installed the same
as two individual machines and the chain pulleys mounted ac
cording to the blueprint furnished with the machine.
To install one motor for driving two machines run in pairs,
the motor should be mounted directly below the centre line be
tween the two machines with the tight machine pulley towards
the front of the table as illustrated in Fig. 4. The belt idler pulleys
fR. Fig. 4) must be mounted on their arms (S) as illustrated in
Fig. 4 and the chain pulleys mounted according to the blueprint
furnished with the machine. When individual motors are used
for each machine in pairs, there are no belt idlers used under the
table and the motors are set directly below the machine pulley
and on the same angles that each machine is set with respect to
the table.
For applying belt see instructions on page 19.
Fig. 4. Underside of Table, Showing Location of
Idlers,
Treadle Chain Guides and SINGER Electric Transmitter Motor
for Class 71 Machines when Operated in Pairs
From the library of: Superior Sewing Machine & Supply LLC

To Oil the Machine
Use 'TYPE B" or 'TYPE D" OIL, sold by Singer Sewing
Machine Company. For description of these oils, see inside front
cover of this book.
When the machine is received from the factory, it should be
thoroughly cleaned and oiled. Oil should be applied at each of
Fig. 5. Oiling Points at the Right of the Machine
Also Adjustments on the Machine
the places designated by the unmarked arrows in Figs. 5. 6. 7. 21
and 26- When the machine is in continuous use, it should be
oiled regularlv to ensure easy running and prevent unnecessary
wear of the parts which are in movable contact.
It is important to use either of the above heavy grades of oil
for
the feed gears and stop motion mechanism in the rear of the
machine.
Fig. 6. Oiling Points in the Base of the Machine
Also Adjustments on the Machine
From the library of: Superior Sewing Machine & Supply LLC

To reach the parts underneath the bed plate, throw the belt
off the machine pulley, disconnect the starting and clamp lifting
chains, then turn the machine over on its hinges.
Occasionally remove the screw (G, Fig. 7) from the loose
pulley and apply a small quantity of BALL BEARING LUBRI
CANT to the ball bearing of the pulley through the tapped hole,
using BALL BEARING LUBRICANT sold by Singer Sewing
Machine Company, then replace the screw (G).
Oil the shuttle bearing at the places indicated by the unlettered
arrows in Fig. 21, Page 23, once each day.
Fig. 7. Oiling Points at the Left of the Machine
Also Adjustments on the Machine
Needles
Needles for Machines 71k101 are Catalogue 1526 (71xl)and
are made in sizes 9, 11, 13, 14, 16, 17, 18, 19, 21 and 22.
The size of the needle to be used should be determined by
the size of the thread which must pass freely through the eye of
the needle. 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 number, and also the catalogue number.
The following is an example of an intelligible order:
'TOO No. 16, Catalogue 1526 Needles."
The best stitching results will be obtained when using needles
sold by Singer Sewing Machine Company.
From the library of: Superior Sewing Machine & Supply LLC