Singer 15-91 - Needles and Threads; To Set the Needle; Upper Threading

8
TO OPERATE THE MACHINE
Raise the presser foot B by means of the presser
bar lifter C to prevent injury to the foot B and
feed A.
lezowo__
Fie. 4. Front View or rae Macuine
Place a piece of cloth under the presser foot and
let the foot down upon it.
Turn on the electric current and, if the combina-
tion knee and foot controller is installed as a knee
controller, press the controller to the right, or, if the
controler is placed on the floor to be used as a foot
controller, press down on the pedal of the controller.
As the pressure on the controller is increased, the
speed of the machine is increased, the speed being
controlled entirely by the amount of pressure on the
controller. Operate the machine in this way, without
being threaded, until you have become accustomed
to guiding the material and operating the controller.
9
NEEDLES AND THREADS
For perfect stitching, the thread should be selected
according to the fabric to be stitched and the needle
must be the correct size for the thread which must
pass freely through the eye of the needle.
CHART SHOWING THE RELATIONSHIP OF
TYPES OF FABRICS,
THREAD AND NEEDLE SIZES AND
MACHINE STITCHES TO THE INCH
| MACHINE
TYPES OF THREAD NEEDLE STITCHES
FABRICS SIZES SIZES PER INCH
Filmy materials comparable 100 Cotton
to Net, Marquisette, Or- OO and OOO 9
INSIDE) TOP
SEAMS STITCHING
gandie, Ninon, Silk | [20:1 se
Sheer materials comparable}
to Lawn, Dimity, Voile, 80 to 100 11 16 20
Batiste, Chiffon, Rayon, Cotton
Sheer, Rayon Crepe. O Silk
Lightweight muterials com-| 60 io 80 i
parable to Gingham, Cham- Cotton 14 12 18
ray, Sheer Wool Crepe, A and B Silk
Taffeta.
Medium lightweight mater-) 1
ials comparable to Poplin,
Pique, Percale, Cretonne,| 50 to 70
Chintz, Faille, Bengaline, Cotton 14 12 16
Wool Flannel, Wool Crepe,, B Silk |
Wool Jersey. | |
Medium heavy materials) .
comparable to Crash, Gab-| 40 to 50 |
ardine, Rep, Corduroy, Cotton 16 19 12
Velveteen. C Silk
Heavy materials compar- 30to40Cotton 18 Tay
able to Sailcloth, Denim,|24to30Cotton 19 8 10
Ticking. D Silk 18 or 19
40 to 60 Linen
Very heavy materials com |20to24Cotton 21 6 8
parable to overcoating. E Silk |
9 : Mercerized
Plastic materials. Cotton 11 10 12
When ordering needles, always specify “Class and
Variety 15x1”’and state the size and quantity required.
10
TO SET THE NEEDLE
Select the cor-
rect needle ac-
cording to the K
table on page 9.
Be sure that the
needle is not
blunt or bent.
Raise the needle
bar to its highest
osition and
oosen the thumb
screw K in the
needle clamp.
Push the needle
with its flat side
to the left up
into the needle
clamp as far as
it will go, then
tighten the
thumb screw.
UPPER THREADING
(Sex Fie. 6 on THE Fotuowrna Pace)
Raise
the
take-up
lever
5
to
its
highest
point.
Place
the
spool
of
thread
on
spool
pin
at
top
of
machine
Pass the thread through the thread guide 1
Down, under and from back to front between the
tension
dises
2
(the
thread
guard
L
guiding
the
thread
between
the
dises)
:
Hold the spool tightly and pull the thread against
the take-up spring 4 until it enters the retain-
ing fork 3
Pass the thread from back to front through the
hole 5 in the take-up lever
Down through the guide 6 on the face plate
Into the guide 7 on the needle clamp
From right to left through the eye 8 of the needle.
Draw about two inches of thread through the eye
of the needle with which to commence sewing.
19010 i
Fra, 5, Serrina rue NEEDLE