Singer 247-4 User manual

SINGER
247-4 TO 247-7

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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 -STAINLESS THREAD LUBRICANT
For lubricating the needle thread of sewing machines for
stitching fabrics or leather where a stainless thread lubri-
cant 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 lb. and 4 lb. tins,
Copyright,U.S.A., 1923, 1931, 1940, 1941, 1949and 1950,
by The Singer Manufacturing Company
All Rights Reserved for All Countries
20453
ADJUSTERS MANUAL
FOR
SINGER*
SEWING
MACI-IINES
247-4, 247-5, 247-6 and 247-7
CAUTION: Special attention is called to the
lubricating instructions on pages 4 to 7.
0' A TRADE
MARK OF
T~~ SING~R MANUFACTURING CO.

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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.
USING
Tl-IE IMPORTANCE OF
SINGER* PARTS AND NEEDLES
IN s
INGER MACHINES
The successful operation of SINGER machines can only be nssur ed
if SINGER parts and needles are used. Supplies are available al 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. 2
3
DESCRIPTION
SINGER Machines of Class 247, described in this book, are equir,r,ed
with a vertical trimrnPr and have threp neerlles, two loor,Prs and mechanism
for layinq a tor, covering thread. Each machine simultaneously trims the erl9n
of the fabric and r,roduces an erl9e coverin~J stitch with two needl0,s, one
loopnr and a thread laying linger and makes a reinforcing, independent
r,arollel line of two-thread chain stitching with the third needl0, and second
loor,er.
They each have boll beorinDs for the arm rotary shaft intermediote and
rear beorings, and on oilinD system which autornaticolly oils all r,rincir,ol
bearings.
The greatest distance between the outside needles is Vr inch, and machines
can be furnished in the following gouges:
Distance bPtween
overedgin~J
needles
1/s"
1/s"
1/s"
1/s"
1/i6"
1/i6"
1/i6"
¼"
¼"
Distonce between
single line of stitching and
overedging stitching
1/16"
1/s"
1/i6"
¼"
1/16"
1/s"
3/16"
1/16"
1/s"
Following are descriptions of the individual machines:
Machine 247-4 (drop feed) is equir,ped with gathering feed and is used
for seaming dresses, children's wear, trousers and similar work, and has a
needle bar stroke of l ½2 inches. Maximum stitch length is 8 stitches to the inch.
Machine 247-5 !drop feed) is used for seaming and welting auto seat
covers, upholstery, cushions, trousers, coats and similar work, and has a
needle bar stroke of 13/s inches. Maximum stitch lenS")th is 6 stitches to the inch.
Machine 247-6 is equipped with independent ur,per and under feeds
and with gathering feed, and is used for seaming children's dresses, children's
wear, trousers, bed sr,reads with inserted welt, and for similar work. Needle
bar stroke is l ½2 inches. Maximum stitch lenS")th is 8 stitches to the inch.
Machine 247-7 is equipr,ed with independent upper and under feeds and
is used for seaming and welting outo seat covers, ur,holstery, cushions,
trousers, coats and similar work. Needle bar stroke is l ¾ inches. Maximum
stitch length is 6 stitches to the inch.

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4
SETTING
UP
When
setting
up
the
machines, see
that
the
rubber
insulating
bushings
are
in
place
in the
four
holes
in
the
machine
bed.
Place the
felt
pads
over
the
four
studs in
the
corners
of
the base, then set the
machine
on
the base,
with
the studs
through
the
holes
in the
rubber
bushings.
CAUTION: After setting
up
the machine, do not
run
it
until
it
has
been
oiled
as
instructed below and
on
pages 5, 6 and
7.
SPEED
The maximum
speeds
recommended
for
these machines
are
as
follows:
Machines 2
47-4
and 2
47-6
.
.....
3800
rrvolutions
per
minute
Machines
247-5
and
247-7
.....
.
3600
rnvolutions
per
minute
CAUTION
--These machines
should
be
operated
at
moderate speeds
for
the first
few
days,
after
which
they can
be
operated
at
maximum speeds
depending
on
the nature
of
the work being sewn.
TO
OIL
THE
MACHINES
These machines
are
each
equipped
with
an
oiling
system
which
automatic-
ally
delivers
the
required
quantity
of
oil
to
all
principal
bearings.
A
connect-
ing
rod
scoop
takes
oil
from
the
reservoir
and
lubricates,
by
splash,
the
various
bearings
inside
the
machine
arm. Some
of
this
oil
is
distributed,
through
pipes
and
wicks,
to
the
principal
bearings
outside
the
machine
arm.
TO
INSURE OPERATION
OF
THIS
OILING
SYSTEM,
THE
FOLLOWING
INSTRUCTIONS MUST
BE
CAREFULLY
OBSERVED.
FAILURE
TO
DO
THIS
WILL
RESULT
IN SERIOUS
DAMAGE
TO
THE
MACHINE.
5
CAUTION-Use
"TYPE
B"
or "TYPE D" OIL
sold
only
by
Singer Sewing
Machine Company. For description
of
oils, see inside
of
front cover.
B
I
,~~~~=:::=~~ E
A
l50
I
I
~
Fig. 2. Priming
and
Oiling
Points
al
Rear Side
of
Machine
K
G
H
A
machine
new
from
the
factory,
or
one
which
has
been
idle
for
some
time,
must
be
oiled
as
instructed
next
below
and
on
pages
6
and
7.
NOTE
--It
is
not necessary to remove the work
plate
for the first or
subsequent oiling
of
the machine. For
this
purpose, open
out
hinged portion
of
the work
plate
at
the front side. The work
plate
is
removed
in
Figs.
2
and 3 for the purpose
of
illustration.
1st.
lift
up
and
turn
aside
the
cover
B,
Fig. 2,
and
apply
oil
to
the
filler
A,
Fig. 2,
until
the
oil
stands
at
the
mark
Y,
Fig. 3,
when
the
gauge
is
inserted
in
the
gauge
pipe
X, Fig. 3,
as
far
as
it
will
go.
The
oil
supply
must
be
main-
tained
at
this
level.
After
applying
oil
to
the
filler,
turn
the
cover
B
to
closed
position.
CAUTION-
This
cover
must
be
kept closed
at
all
times
except
when
oiling.

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6
2nd. Fill the oil holes or troughs at D, Land K, Fig. 2, and at R, T, U, V, Z
and A2, Fig. 3, to prime the wicks at these points.
Fig. 3. Priming and Oiling Poinh al Front Side al Machine
(Oil Gauge shown Removed)
3rd. Fill the oil holes or troughs at P, Q and F, Fig. 2.
4th. Fill the main oil pipe to overflowing through the oil hole W, Fig. 3.
5th. Apply oil to oil holes at C, N, E and G, Fig. 2, and at S, Fig. 3. These
two oil holes are not visible in thesA illustrations, but the arrows S will
indicate their location. They serve the looper avoiding motion eccentric
connection hinge pin. Also apply an occasional drop of oil at H, Fig. 2, on
the gathering feed control.
7
6th. Apply oil at D2, Fig. 4, for the needle bar connecting stud, also apply
a drop or two of oil at 82 and F2, Fig. 4, where the presser bar passes
Fig. 4. Face Plate removed to show Oiling Points
through its bushings, also at C2 and E2, Fig. 4, where the needle bar passes
through its bushings.
NOTE -After the machine has run at a moderate speed for about five
minutes, it should be stopped and allowed to stand idle for a few minutes.
The oil in the reservoir should then be checked and oil should be added,
when necessary, to bring it to the oil level mark Y, Fig. 3.
A machine in daily use must be oiled as follows:
1st. Apply oil to the oil filler A, Fig. 2, until the oil stands at the oil level
mark Y, Fig. 3, when the machine is at rest.
2nd. Fill
the oil cup D, Fig. 2, LEVEL FULL twice daily or as required.
3rd. Apply oil twice daily, or as required, to all oil holes.
4th. Remove the face plate and apply oil to the points shown in Fig. 4.
SPECIAL NOTICE
The letter O marked on the oil pipe coupling M, Fig. 2, must always be
at the top. This is to insure that the oil spoon, attached to the inner end of
the coupling, is open side up.

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8
NEEDLES
Needles
for
these machines
are
of
Class
and
Variety
62x53 in Sizes
12,
14,
16, 18,
21, 22,
and
23.
The size
of
the
needles
to
be
used
is
determined
by
the size
of
the
thread
which
must pass
freely
through
the
needle
eye.
Rough
or
uneven
thread,
or
thread
which
passes
with
difficulty
through
the
needle
eye,
will
interfere
with
correct
stitching.
Orders
for
needles
must
specify
the quantity
required,
the
size
number,
also
the
class
and
variety numbers
separated
by
the
letter
"X".
Following
is
an
example
of
an
intelligible
order:
"100
No.
21, 62 x 53
needles"
The best stitching results
will
be
obtained
with
needles
furnished
by
Singer
Sewing
Machine
Company.
TO
SET
THE
NEEDLES
Insert the
needles
as
far
as
they
will
go
up
into
the
needle
clamr,,
with
rhe
single
continuous
groove
of
each
needle
toward
the
front
side
of
the
machine
!toward
the
operator),
then
securely
tighten
the set
screw
for
each
needle.
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
mode
needles.
2
9
TO
THREAD
THE
NEEDLES
AND
THE
THREAD
CARRYING
FINGER
See
Figs.
5, 6
and
7
Spool
A supplies the
thread
for
the
right-hand
needle.
Spool
B
is
for
the
center
needle.
Spool
C
is
for
the
left-hand
needle.
Spool
Dis
for
the
thread-
carrying
finger
G.
The
course
of
each
thread
is
shown
in
detail
in
Figs.
5, 6,
and
7.
Fig.
5.
Threading
the
Needles
and
Thread-Carrying
Finger
Spools
E
and
Fare
for
the
loopers.
See
instructions
on
pages
10
and
l l
for
threading
the
loopers.

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fig.
6.
Upper
Threading
of
Machine
fig.
7.
Threading
Needle,
and
Thread-Carrying
finger
NOTE-Draw
about
two
inches
of
thread
through
each
needle
eye
and
the
eye
of
the
Thread-Carrying
Finger
with
which
to
commence
sewing.
TO
THREAD
THE
LOOPERS
Spool
E,
Fig.
5,
is
for
the
rear
looper
K,
Fig.
9,
the
thread
for
which
is
passed
down
through
the
rear
hole
in
the
lifting
lever
W,
Fig.
8,
crnd
down
through
tension
N,
Fig.
8,
down
through
tlw
outside
hole
in th,,
upriqht
guide
P,
Fig. 8,
then
forward
lhrouoh
the
slot
Q,
Fig. 8,
in
th,!
work
plote,
then
forward
and
over
guide
R,
Fig.
9,
through
guide
S,
Fig.
9,
through
under
thread
take-up
stripper
T,
Fig.
9,
through
the
rear
slot
of
threod
separotor
U,
Fig.
9,
under
the
tension
V,
Fig.
9,
and
forward
through
the
rear
looper
K,
Fig.
9.
11
\¥-_fl:~,._'-~~'-~""•::·:·
E
r
\e
1
1
·11
.r
-----=--
·
_(}\"'•"c~
~Q
=1=1
ff9~18
fig.
8.
Threading
the
leapers-
Rear
Side
of
Machine
Spool
F,
Fig.
5,
is
for
the
front
looper
L,
Fig.
9,
the
thread
for
which
is
pa"ed
down
thrOU(Jh
the
front
hole
of
the
liftinq
lever
W,
Fig. 8,
down
through
tcmion
0,
Fig.
8,
ond
down
throuqh
th,"
inside
hole
of
11,,,
upriqlit
guide
P,
Fig. 8,
then
forward
through
the
slot
Q,
Fig. 8,
in
the
work
plate,
fig.
9.
Threading
the
leapers-front
Side
of
Machine
then
forward
through
the
guide
R,
Fig.
9,
and
over
the
quide
S,
Fig.
9,
through
under
thread
take-up
stripper
T,
Fig.
9,
through
the
front
hole
of
thread
separator
U,
Fig.
9,
over
the
tension
V,
Fig.
9,
through
wire
guide
W,
Fig.
9,
and
forward
through
the
front
looper
L,
Fig.
9.
Draw
about
two
inches
of
thread
through
the Pye
of
eoch
looper
with
which
lo
commence
scwi11q.
CAUTION~
Before commencing to sew, hold the covering
thread
D,
to
the
left
of
the presser
foot
and
toward
the
rear
side
of
the machine,
for
the first
few
stitches to insure that the
thread-laying
finger
M,
Fig.
7,
catches the covering
thread.

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12
TO
REGULATE
NEEDLE
THREAD
TENSIONS
See Fig. 10
Tensions
should
be
just
enough
to
set
the
stitches
properly
in
the
goods.
fig.
10. To
Regulate
Ne.-dle
Thread
Tension,
and
Tension on
Covering
Thread
Turn thumb nuts
J,
downward
to
increase
the
tensions
or
upward
to
decrease
the
tensions.
TO
REGULATE
TENSION
ON
THE
COVERING
THREAD
Tension
for
the
covering
thread
is
regulated
by
loosening
screw
H2,
Fig.
11,
and
setting
the
controller
J2,
Fig.
11,
forward
(toward
the
operator)
··i
~
-1
...
-
;!
J
J2
Fig.
11.
Ta Regulate Covering Thread
Tension
or
backward
!away
from
the
operator).
When
adjustment
is
completed,
tighten-
screw
H2.
This
adjustment
is
in
conjunction
with
tension
regulation
by
means
of
thumb
nut
G2,
Fig.
10.
Turn
this thumb nut
downward
for
increased
tension,
or
upward
for
less
tension
on
the
covering
thread.
13
TO
ADJUST
THREAD
SEPARATOR
After
loosening
screw
L2,
Fig.
10, the
thread
separator
K2,
Fig.
10,
is
orljustohlP
upward
or
downword
to
obtain
thP bPst
rPs11lts
with
various
kinds
and
thicknesses
of
thread.
Tighten
screw
L2
after
adjustment
has
been
completed.
TO
REGULATE
LOOPER
THREAD
TENSION
See Fig. 12
To
increase
the
tension
on
the
looper
threads,
turn
the
thumb
nuts
M2,
at
Fig.
12.
To
Regulate
Looper
Thread
Tension
and
To
Regulate
Pressure on
the
Material
the
rear
side
of
the
machine,
inward,
or
turn
these
thurnb nuts
outward
for
less
tension
on
the
looper
threads.
TO
REGULATE
THE
PRESSURE
ON
THE
MATERIAL
Turn
the
thumb
nut
N2,
Fig.
12,
downward
for
increased
pressure,
or
upward
for
less
pressure
on
the
material.

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14
TO
REGULATE
STITCH
LENGTH
See
Fig.
13
loosen
the
two
clamping
scrPws
02
in
the
fped
eccPntric
on
thP
rotary
shaft,
and,
to
increase
the
length
of
stitch,
furn the
regulating
screw
P2
Fig. 13.
To
Regulate Stitch
length
counter-clockwise
loutwordl,
or
furn the
r,'qulnfir1q
scre,v
P2
,l()ckwise
linwordl
to
shorten
stitch
lenqth,
then
securely
fiqhff'n
fh0
two
clamping
screws
02.
Then sef the
needle
guard
as
instructed
on
page
24.
TO
SET
THE
NEEDLE
THREAD
TAKE-UP
See Fig. 14
With
the
needle
bar
at
its
lowest
position,
the
needle
thread
fake-up
T2
is
normally
sef
about¼
inch
from
the
fop
of
the
needle
bar,
as
indicated
in
Fig. 14. This
selling
may
be
varied
to
suit
sewing
conditions.
r
o
adjust,
~
Q / /._-/._ I I
-~~~///.""'
~£~~?"£·-
=-Yr
0".1
-~
0
...----:
-:'."cecc-'
/4
~@It\
,-~
L_,
___
_
Fig. 14. Setting
Needle
Thread Take-up
and
Adjusting Auxiliary Thread Toke-up
loosen
clamp
screw
Q2
and
set the take-1Jp as
required,
makin~i
certain
that
it
parallels
the
face
plate
of
the
machine,
then
tighten
screw
02.
15
TO
ADJUST
AUXILIARY
THREAD
TAKE-UP
See Fig. 14
The
auxiliary
thread
take
up
S2
should
be
set
lo
fake
up
the
slock
of
the
needle
threads
after
the
looper
has shed
the
needle
loops
and
as
the
needle
bar
finishes its
downward
stroke
and
the
stitches
are
set.
To
change
the
position
of
the
auxiliary
thread
take-up,
loosen
screw
R2
and
raise
or
lower
the
auxiliary
thread
take-up
as
required,
then
tighten
screw
R2.
For
some
threads
it
will
be
necessary
to
set the
auxiliary
thread
take-up
at
a
height
different
from
that
required
by
others,
owing
to
the
differences
in
finish,
twist,
elasticity,
etc.
GATHERING
FEED
CONTROL
See Fig. 15
The
adjustable
gathering
feed
is
controlled
by
means
of
the
actuatinsi
1,,v,•r
V2
which
is
operated
by
either
foot
control
or
knee
control.
V2
Fig. 15.
Gathering
Feed
Control
The
extent
of
gathering
feed
action
is
limited
by
setting
the
stop
screw
U2.
The
gathering
feed
mechanism
can
be
locked
for
continuous
gafherirHJ.
hy
means
of
the
screw
W2.

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16
TO REMOVE AND REPLACE THE WORK PLATE
See Fig. 16
Turn the balance wheel to raise the needle bar to its highest position.
Remove the presser foot, throat plate and the needles.
Fig. 16. Removing the Work Plate
Remove the nut Y3 from the hinge screw stud Z3, at the back end of the
movable knife lever A4, and withdraw the hinge screw stud Z3. Next
remove the nut V3 from the upper end of the movable knife lever connection,
then remove the movable knife lever A4 with the knife holder and movable
knife F3, attached thereto.
Next remove the three screws which fasten the work plate to the mochine
and remove the work plate.
To replace the work plate, reverse the foregoing procedure, and adiust
the movable knife as instructed on poge 23.
f
l
r
l
INSTRUCTIONS
FOR
ADJUSTERS and MECHANICS