U S Blindstitch 108, 108-1, 1 18, 118-1, 508 Manual

Pr

in

ted

in

INSTRUCTIONS

and

PARTS

BOOK

for

U.S.

MACHINES

BASIC

and

SPECIAL

PARTS

f

or

All

SK

IP

STITCH

MODELS

SUCH

AS

:

108,108

-

1,1

18,

118

-1,

508,

508

-

1,

508

-C, 5

08

-K

518,

518

-1,

518-2,

51

8-9

,

518-A,

518-C,

518

-

PR

, 518-

PRB

U. S.

BLIND

STITCH

MACHINES

U.

S.

BLIND

STITCH

MACHINE

CORP.

231

West

29th

Street,

New

York

1,

N.'

•

LAckawanna

4-9144

From the library of: Superior Sewing Machine & Supply LLC

YOU

CAN

DEPEND

ON

U.

S.

SERVICE

Simplicity of construction

is

the

keynote

of

U.

S.

Blind

Stitch Machines. Every effort has been

mode to

simplify the use

of

this

catalogue

so

that

each machine port con

be

easily identified.

Seldom does

aU.

S. Machine

get

out

of

order,

because it

is

rugged

and

uncomplicated

in

construc-

tion

and

there

are

many years

of

practical experience

behind it. Instructions

are

simply given

and

if

an

ordinary

amount

of

knowledge

is

used, very little

mechanical skill

is

necessary.

You

are

sure to

be

more

than

pleased with quantity

and

quality

of

production you receive from your

U.

S. Machines.

When

Ordering Parts

BE

SURE

to

Specify

Model

of

Machine

2

t

I

VERY

IMPORTANT

To

assure

the

proper

operation

of

U.

S. Machines,.

use

GENUINE

U.

S.

NEEDLES

ONLY,

this

is

the

wise

way

to

avoid

trouble, loss

of

valuable time, costly repairs

and

assures the best results.

Standard

Needle Sizes

Used

in

These Models

# 10, # 15,

#20,

#25,

#30

Each needle has its size

stamped

on

the

shank.

U.

S.

B.

S.

is

stamped

on all

U.

S. needles.

THROW

AWAY

DULL

OR

HOOKED

NEEDLE

Good

results

are

obtained

only

by

using a

sharp

needle. While

U.

S. needles give

extra

long service,

they

do,

eventually, become dull. Then discard

and

insert a new

U.

S.

needle

of

the proper size.

HOW

TO

INSERT

NEW

NEEDLE

CORRECTLY

To

take

out

the

old needle, slightly loosen

the

clamp

screw where

the

needle sets. Before inserting the new

needle, turn

the

Radio Dial Knob to

the

right a sufficient

number

of

times

so

the

needle

is entirely clear

of

the

rib.

To

insert a

new

needle: push it up into

the

groove

as

far

as

it will

go

and

tighten

the

screw,

then

tum

the

dial

back

slowly until you reach

the

required penetration.

It

is

easy

to

operate

the

Radio Dial Knob which regulates needle

penetration.

Be

Sure the Needle

You

Use Has Genuine

U.

S.

Trademark on

the

Shank, on the

Box

and

on

the

Envelope.

3

From the library of: Superior Sewing Machine & Supply LLC

THE

DIAL

The

dial,

of

course,

must

be

adjusted

to

the

thickness

of

the

fabric,

so

that

the

stitch wi

ll

be

regular

and

even.

If

the

needle

fails

to

catch

on

the

right

side

of

the

material,

or

bottom

layer,

turn

the

dial

-a little

at

a

time

-

to

the

left;

as

the

arrow

points

to

"MORE".

Run

a

few

stitches

to

test.

If

the

needle

point

goes

down

too

deep

and

shows

too

much

impression

on

the

right

side

of

the

material,

turn

the

dial

to

the

right

as

the

arrow

points

to

"lESS".

Then

test

until

you

have

the

right

penetration.

Only

a little

patience

is

required

for skilled

adjusting.

GUIDE

FOR

PROPER

NEEDlE PENETRATION

Dial

Showing

"MORE"

Dial

Showin

g

"lESS"

NEW

TYPE

DIAl

NOW

USED

ON

U. S. MACHINES

Rib

Shaft

Adjustment

for

"MORE"

5

-.-

-.

..

·

1---

---

"

---

- -

--

Rib

Shaft

Adjustment

for

"lESS"

From the library of: Superior Sewing Machine & Supply LLC

I

,,

HOW

TO THREAD

Thread

follows

from spool or

rone

(A)

thru 9pening and

over tension

(B),

under bar

(C)

thru openings (D) and

(E)

then

thru

the

needle

eye

(F)

THREAD

BREAKAGE:

HOW

TO

AVOID

E

See

that

the machine

is

threaded

properly,

as

im-

proper threading causes breakage. The

thread

should

feed

firmly, but without pull or interruption.

If

the stitch

is

loose,

turn the tension nut

(C)

toward you.

If

the

thread

travels too.

tightly, shirring the material, or

if

it breaks, turn

the

tension

nut

(C)

away

from you which

will

loosen tension

of

the

spring.

After substantial service, the needle

will

be

inclined

to cut a sharp

edge

in

the groove

of

the needle guide,

causing

thread

breakage.

When this occurs,

we

suggest

replacing needle guide:

part

#47.

Sometimes a groove will

be

caused

in

the opening

of

needle clamp

(E)

by

constant

thread

friction; this also will

cause

thread

breakage.

You

can avoid this

by

changing

needle

clamp:

part

#36.

6

.;.

OIL

IS

THE

LIFE

OF

THE

MACHINE

Be

SURE

to oil every movable

part

wherever oil cups

or

open holes

are

located

EVERY

DAY,

especially when

the

machine

is

new. When oiling, insert

the

oil spout firmly.

Use proper lubricating oil.

By

observing these simple instructions, you will

secure satisfactory results from your machine.

If

you

do

run

into

any

trouble,

get

in

touch with our main office,

or

the

representative from whom you

bought

the

machine.

HAND

WHEEL

The

hand

wheel must

always

turn

away

from

the

operator.

SPEED

Speed

of

the

machine

depends

on

the

model.

On

all skip (or interval) stitch machines,

we

recommend

speed

from

2,000

to

3,000

stitches

per

minute.

Very

Important:

Do

not mount machine on high

speed

motors.

7

From the library of: Superior Sewing Machine & Supply LLC

REPLACING LOOPER

Replacing

of

the

looper (part

#22)

is

of

utmost

importM

once

and

the princi-ple

is

the same on all machines.

Loosen

the

screw

and

remove the old looper. Insert new

looper

in

the

same

slot

and

turn with fingers so

that

the looper

is

straight

and

the

needle enters between the prongs

of

the

looper clearing the looper prongs without touching either one.

Then turn

hand

wheel slowly

away

from you until

the

looper

reaches the

far

right side

of

the presser foot where the looper

should clear the needle iust

in

front

of

the needle

eye

and

needle

is

under the looper without touching it. Then when

looper goes to left side

also, see

that

it clears the needle

guide. Tighten looper screw to hold looper

in

position. Make

certain

that

the looper does not touch the feeder.

If,

for some reason, you

are

not

able

to adiust the

looper

in

the proper position, note

that

on the right side

of

machine

is

the eccentric block (part

#21

).

Here

are

three set

screws which hold assembly unit of the entire looper

in

posiM

tion.

By

loosening these three screws, you may raise or lower

looper to desired position. When the looper

is

finally

in

cor-

rect position,

be

sure to tighten the screws

again.

8

,.

REPLACING

FEEDER

To

replace feeder (part

#43),

remove only front screw

of feed lever

and

loosen inner screw. Remove the broken

or

worn feeder from feed lever

and

replace with new

one.

After

new feeder

is

in

place, move

hand

wheel

away

from you to

determine

that

looper clears

above

feeder; if they

do

touch,

press feeder down with finger

until the looper clears and·

tighten screws on feed lever.

DO

NT'S

Do

not rest on knee lifter.

Be

sure

that

the knee

does

not

touch the knee lifter while the machine

is

in

operation.

Do

not try to help the machine by pulling the fabric, lest

you

bend

the needle. The machine feeds the work without

assistance.

When removing the work from the machine,

be

sure

that

the

needle

is

out

of

the cloth.

Do

not run the machine without cloth.

9

From the library of: Superior Sewing Machine & Supply LLC