Lewis 150-2 - Page 12

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11

ADJUSTING

LENGTH

OF

STITCH

The

stitch

is

regulated

by

the

knob

No.

426-47

(Plate

3).

located

on

top

of

the

arm

of

the

machine

near

the

head.

First

open

the

top

cover

of

machine

to

observe

the

feed

indicator

on

the

shaft.

with

numerals

which

indicate

number

of

stitches

per

inch.

Press

down

the

feed

knob

located

on

top

of

the

machine,

which

will

engage

a

slot

in

the

feed

mechanism.

Now,

turn

the

handwheel

over

and

away

from

you

while

hold-

ing

the

knob

in

the

slot

to

lengthen

stitch,

and

toward

you

to

shorten

stitch.

Observe

through

the

opening

in

the

top

of

arm

the

numbers

on

the

feed

disc

as

you

turn

until

the

numeral,

indicating

stitches

per

inch.

is

directly

under

the

indicator.

CYLINDER

BASE

PARTS

AND

THEIR

ADJUSTMENT

(See

Plate

1A)

The

parts

in

the

cylinder

base

and

base

of

arm

operate

the

ridge

forming

disc,

depress

the

feed

plate

and

retract

the

disc

to

insert

and

remove

the

work

from

the

machine.

Parts

in

the

cylinder

base,

where

possible,

are

held

in

position

with

spot

screws

and

a

timing

mark

has

been

milled

in

the

bracket

No.

50-222.

Parts

assembled

in

this

bracket

that

have

timing

marks

that

must

match

the

timing

mark

in

the

bracket

are

eccentric

No.

433-151

and

gear

No.

27-165.

Bracket

No.

50-222

can

be

removed

from

the

machine

by

removing

stud

No.

17-145

which

will

disconnect

the

end

of

connecting

rod

No.

447-118

from

lever

No.

45-352.

Next

remove

the

three

screws

No.

18-664

and

take

bracket

from

the

base

by

slipping

the

headless

bearing

stud

No.

865

L

out

of

the

hole

in

ball

joint

No.

4124-51.

Gear

No.

27-166

and

eccentric

No.

433-151

are

held

on

to

the

shaft

No.

14-431

by

the

set

screws

Nos.

1025

L

and

18-624

6

therefore

when

assembling,

if

the

gear

teeth

are

engaged

so

that

the

timing

marks

all

coincide

6

the

machine

will

function

properly.

Crank

No.

448-131

is

clamped

to

the

disc

shaft

and

is

used

to

adjust

the

ridge

forming

disc.

(See

Plate

1A)

Crank

No.

48-127

is

for

adjusting

shaft

No.

14-429

for

depressing

feed

plates.

The

adjustment

is

made

through

a

hole

in

front

of

cylinder

base.

Loosen

screw

No.

CS331

in

crank

No.

48-127

and

with

feedplates

incontact

with

presser

foot,

adjust

surface

(A)

of

14-429

so

that

two

thicknesses

of

newspaper

will

just

pinch

against

the

contact

surface

of

feed

plate

holders

(A

6

Plate

1A).

Be

sure

feed

plates

are

in

contact

with

bottom

of

presser

foot.

From the library of: Superior Sewing Machine & Supply LLC

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