Singer 72W19 - Stitch Formation and Piercer Action; Hemstitch Opening Process

To Next Page

To Previous Page

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

discs

(2).

Then

wind

the

end

the

thread

around

the

bobbin

a few

times,

push

the

bobbin

winder

pulley

over

against

the

machine

belt

and

start

the

machine.

When

sufficient

thread

has

been

wound

upon

the

bobbin,

the

bobbin

winder

will

stop

automatically.

the

thread

does

not

wind

evenly

the

bobbin,

loosen

the

screw

(A)

the

tension

bracket

and

move

the

bracket

the

right

left as

may

be required,

then

tighten

the

screw.

The

amount

thread

wound

the

bobbin

regulated

the

screw

(B).

wind

thread

the

bobbin,

turn

the

screw

(B)

inwardly.

wind

less

thread

the

bobbin,

turn

the

screw

outwardly.

After

the

bobbin

has

been

wound,

turn

the

thumb

screw

(C,

Fig.

over

from

you

tighten

the

balance

wheel.

KNEE

LIFTER

The

knee

lifter

used

for

raising

the

presser

foot by

knee

pressure

against

the

knee

plate,

leaving

both

hands

free to

manip

ulate

the

work.

the

knee

lifter

does

not

raise

the

presser

foot

satisfactorily,

adjust

the

rod

the

rock

lever

which

connects

with

the

rod

the

arm

the

machine

lift

the

presser

foot.

STITCH

FORMATION

AND

PIERCER

ACTION

How

the

Straight-away

Hemstitch

Opening

Made

One

double

stitch

made

the

inside

vibration,

another

the

outside

vibration

and

the

third

the

inside

vibration

the

needles.

The

piercer rises

out

of the material

every stitch.

First

Stitch.

the

inside

vibration,

the

piercer,

followed

the

needles

with

their

points

housed

its

grooves,

enters

its

widest

part

and

spreads

the

material

just

after

the

feed

dog

has

dropped below

the

surface of

the

throat

plate;

the

needles rise

they

spread a

little

for the hooks to catch

the

thread

loops.

Second

Stitch.

the

outside

vibration

the

needles

descend

spread apart, each needle entering the material outside of and

the

piercer

within

the

opening, to make

the

stitches which

draw

and

hold the

bar

(or spoke) stitches up to

the

material in imitation of

hand

work.

From the library of: Superior Sewing Machine & Supply LLC

Singer 72W19 - Stitch Formation and Piercer Action; Hemstitch Opening Process

Other manuals for Singer 72W19

Related product manuals