Pfaff 436 Manuale utente

PFAFF

436

One

Needle

Locksfifch

Superspeed

Sewer

with

Automatic

Lubrication

INSTRUCTION

BOOK

G. M. PFAFF AG, Sewing Machine Factory, KAISERSLAUTERN

>/-

•

From the library of: Superior Sewing Machine & Supply LLC

Ind

Section

Brief Description of the Machine

Varieties

the

PFAFF

435

Setting

the

Machine

2. Filling In the Oil

Testing

the

Machine

4. Taking

Qjt

the Bobbin

Case

Cover

...

Winding

the

Bobbin

Threading

the

Bobbin

Case

Threading

the

Needle

8. Drawing Up the Bobbin

Thread

Regulating

the

Thread

Tensions

10. Regulating the Pressure on the Material

11. Choosing the

Proper

Needle

12. Changing the

Needle

13.

Regulating

the

Length

Stitch .

14.

The

Knee

Lifter

15.

The

Hook

16. The

Mechanical

Opener

17. Tilting the

Head

of the Machine . . . .

18. Taking

the

Hook

Apart

19.

Service

and

Maintenance

Instructions

for

Mechanics

20.

The

V-Belt

Drive

21.

Regulating

the

Automatic

Lubrication

System

22. Regulating the Lubrication of the

Head

Parts

23. Regulating the Lubricalion of the Hook . . .

24.

Changing

the

Oil

Page

25. Regulating the Throw of the Threcid Check Spring 25

26. Setting the

Needle

Bar

Correct

Height .

27. Timing

the

Hook

28. Changing the Hook

29. Timing

the

Mechanical

Opener

....

30.

Disassembling

the

Link

Take-up

....

31. Adjusting the Length of Stitch for Forward and Reverse Feeding

32. Removing the Oil Reservoir

and

Taking the Oil Pump

Apart

33.

Probable

Causes

of Sewing Troubles .

From the library of: Superior Sewing Machine & Supply LLC

Instruction

Book

PFAFF

436

One

Needle

Lookstifch

Superspeed

Sewer

with

Automatic

Lubrication

This

Instruction

Book

contains

useful

instructions

for

operators

and mechanics alike and therefore should be

made

available to both

rather

than

put away In your files.

From the library of: Superior Sewing Machine & Supply LLC

PFAFI=

436

Brief

Descrlpfion

the

Machine

The PFAFF436

One

Needle

Lockstitch

Superspeed

Sewing Machine,

fitted

with link

take-up

and

horizontal

rotary

hook, in its mechanical set-up

may

be regarded as an improved model of the

PFAFF

134.

The high sewing speed

of this machine, ranging

from

4,000 to 5,000 stitches

per

minute

depending

on the

grade

of material sewn, has mode it

mandatory

that

it be provided

with

forced

feed

lubrication

system.

Since the manipulations required for this machine, such as for threading

the needle, regulating the length of stitch,

and

tying

off

seams,

have

not

been

changed,

operators

need not bs retrained

and

expenses

for such re

training

are

eliminated.

With its

modern,

functional design,

sturdy

construction,

and

its

sewing

properties

of highest

perfection,

this machine

satisfies

any

demand

in all

branches

the

sewing

industry.

Variefies

off

the

PFAFF

436

The PFAFF 436 is

availoble

in the following

three

varieties:

Model

Class

Work

Maximum

Length

of Stifch

(Stitches p.

Indit

Maximum

Speed

(Stitches

per

Minute)

Needle

System

Presser

Foot

Clearence

Sheer,

light

weight

fobrics 75,000

133

''Ua"

BMedium

weight

fabrics

64,800

134

CMedium

heavy

fabrics

5'/,

4,500

134

R"/ic '

The

above

models of the

PFAFF

436 differ in

regard

to the maximum

length of stitch, the

needle

bar

rise, the

presser

foot

clearance,

and

the

take-up motion,

and

thereby

are

particularly

adapted

to the class of work

they

are

intended

for.

Setting

the

Machine

most

instances the PFAFF 436 is

fitted

for individual

power

drive to

set

up on on individual

power

table.

The machine is driven by a '/» HP motor, friction clutch type. (Type of

current

and

tension

optional

to suit local requirements).

Power is transmitted from the motor to the sewing machine by

means

of a V-belt,

2V0.1"

wide

(DIN 2215).

For 50 cycle current, a

motor

performing 2,800 R.P.M. should be used,

whereas

for 60 cycle current, a

motcr

performing 3,400 R.P.M. would be

appropriate.

From the library of: Superior Sewing Machine & Supply LLC

The

motor

pulley

can

easily

exchanged

alter

the maximum number

of stitches

per

minute of the machine.

The below

table

should be consulted for all

data

regarding the maximum

number of stitches

obtainable

in relation to the

various

motor

pulley

diame

ters.

Diameter

Balar^ce

Wheel

50 Cycles 60

Cycles

Diameter

Motor

Pulley

Stitches

per

Minute

Diameter

Motor

Pulley

Stitdies

per

Minute

(64 mm)

3'Vei"

(95 mm)

3'"/ic"

(100mm)

4'Vg4" (106mm)

4%2"

(112mm)

4 (118 mm)

4,200

4,400

4,600

4,800

5,100

3 (80 mm)

3'Vn2"

(85 mm)

35/^,,"

(90 mm)

3^'/c.i" (95 mm)

3";ic"

(100 mm)

4,200

4,500

4,800

5,000

5,300

Head

and

stand

are

packed

separately.

The

head

should be

unpacked

very

carefully lo

avoid

damage.

After

taking

off

the lid of the

box,

unscrew

the wood screws holding the cushioned wooden blocks supporting the

machine

head

inside the box. Take the

head

out carefully,

remove

the

dust

thoroughly,

and

set

it up on the

rubber

pads

on the

table.

facilitate

mounting the

rubber

V-belt,

place

the

belt

on the machine pulley, lift up

the motor

somewhat,

and

than pull the

belt

on the motor pulley. Setting

the

V-belt

tension

instructed

Section

20.

The

machine

dispatched

without

oil filling in

the

oil

reservoirs

and

must

not

run

while

this

condition!

Filling In

ihe

Oil

The

amount

of oil

required

for the first

two

fillings

comes

with the

machine in a can. It is a spindle oil, viscosity 3.2° Engler

20° C, which

has

proved

very

satisfactory

for the lubrication of the

PFAFF

436. To fill

Photo

From the library of: Superior Sewing Machine & Supply LLC

in the oil,

proceed

follows: Remove

screw

d (Photo 1), fill in

about

1pint

(0.5

oil,

and

wait

few

minutes

until it

has

accumulated

the

oil

reservoir.

Now

check

the

oil level

gauge

the

front

the

oil

reservoir

(Photo 2) if

the

amount

oil filled in is sufficient. The oil level

should

between

the

two

marks

indicating the maximum

and

minimum levels of 0.6

and

0.3 I

respectively

with

the

machine

being

idle.

Under

circumstances

should the

top

cover

removed

and

oil be filled in there. Experience fias

shown

that

it is

advantage

lubricate

the

hook

separately.

Oil

reservoir

serving

this

purpose

is on

top

the

machine

arm

(Photo

1). To fill up

the

hook oil,

remove

screw

and

fill in

approximately

4.5—4.9 cu. in. (75—80

cm^) of oil. ,As long

the

red

point

of the

float

.spindle is visible in

the

oil level

tube

while

the

machine is in

operation,

there

is sufficient oil in the

reservoir.

If,

however,

the

red

point

.the

float

spindle

is flush

with

the

top

surface

of the oil

sealer

nut, oil should be filled up.

Photo

Testing

the

Machine

It Is

recommended

test-run

the

machine

with

thread

and

bobbin

case

removed.

First of all,

however,

make

sure

that

the

line

voltage

corresponds

with the

voltage

given on the

rating

plate

the

motor,

and

that

the

chine pulley

rotates

in the

proper

direction, i. e.

toward

the

operator.

Never

must the

motor

rotate

reverse

direction. Therefore,

before

running the

machine, cut in the

motor,

hold the

balance

wheel with your right

hand,

tip

on the

treadle,

and

make

sure by the jerk of the

balance

wheel

that

rotates

in the

proper

direction. If not, simply

exchange

the

two

motor

ter

minals.

Now

press

down

the

treadle

and,

while running the machine, check

ot the oil

gauge

dome on the top of the machine arm if the pump

works

correctly (indicator

cap

top

position).

For regulating the hook lubrication

system,

see

Section 23.

Note:

Never run the machine unless a piece of fabric is inserted under

the

presser

foot

the

latter

raised.

From the library of: Superior Sewing Machine & Supply LLC

Taking

Ouf

fhe

Bobbin

Case

Cover

Raise the

thread

take-up

to its highest position,

open

the

bobbin

case

latch with the thumb nail

your

left

hand,

and,

means

this lotch,

pull the

bobbin

case

cover

out

shown in

photo

Note:

As long as the latch is

open,

the bobbin

cannot

fall

out

of the

bobbin

case.

iilTiTIM

SYSTEM

ISA-

Photo

Winding

the

Bobbin

For this

operation

the bobbin winder for

power

drive (Photo 4) is used

which

features

number

improvements.

The bobbin winder spindle runs in a sintered steel bushing making lubrica

tion of the

winder

completely

superfluous.

To reduce the high

speed

somewhat,

the

diameter

of the bobbin winder

pulley

has

been

increased

The rim of the pulley

was

given a V-shaped profile so as to

make

the

concave

bottom

surface

the

V-belt

fit

on it

well.

necessary,

even

round

belt

can

used.

From the library of: Superior Sewing Machine & Supply LLC

hjLv

Photo

Fasten

the

bobbin

winder

to the

table

with its driving pulley for enough

from

the

machine

belt

that

will

not

touch

the

belt

when

the

winder

is disengaged. Awindshield mounted on the winder

base

prevents the

thread

from being

dragged

over

toward

the belt by the suction. An adiust-

oble leather

pad

mounted on the

base

serves to

stop

the winder silently.

Pass

the

thread

from the spool 1through

eyelet

2, clockwise

around

and

between

the tension discs 3, to the bobbin. Now

pass

the end of the

thread

inside-out through the slot in the

face

of the bobbin, place the

latter

the

bobbin

winder

spindle 5,

and

hold the loose

end

thread

until the

winder has

made

few

revolutions.

Start

the winder by pressing down the

flap of engaging lever 6. When sufficient

thread

has

been

wound on the

bobbin, the wincier will

stop

automatically. The amount of

thread

to be

wound

on the

bobbin

regulated

screw

Turning it

right—More

thread

Turning it

left

—Less

thread

From the library of: Superior Sewing Machine & Supply LLC

Threading

ihe

Bobbin

Case

Insert

the

full

bobbin

into

the

bobbin

case

cover

that

the

thread

winds

clockwise

(Photo 5).

Pull

the

thread

into the slot 1,

and

draw

it under the tension spring into

the delivery

eye

2. Place the bobbin

case

cover with the bobbin on the

center

stud

in the

bobbin

case

base

that

the

bobbin

case

latch

points

toward

the

operator.

Press the

bobbin

case

in until it clicks in position

audibly. This is very innportant

otherwise

needle or

bobbin

case

breakage

may

result.

Photo

Threading

fhe

Needle

Threading the

PFAFF

436

presents no difficulty since the thread, as with

PFAFF

133/134

machines, passes in plain view of the operator (Photo 6) so

that every user should be familiar with it. Pass the thread from the thread

unwinder to thread guide pin 1 and, to prevent vibration of the thread

high

speed,

through

both of its holes.

the same token, pass it

through

all

three

holes in fhe

thread

retainer

shown

photo

and

then

tween tension discs 3, to threod check spring 4, below guide 5, through

guide 6, right-left through the take-up eyelet 7, down to thread guide 8 and

needle

bar

eyelet

9, and left-right through the needle

eye

10.

Drawing

the

Bobbin

Thread

Hold

the

end

the

needle

thread,

and

turn

the

balance

wheel

toward

you

until

the needle moves down and up again, thus catching the bobbin

thread which comes up through the needle hole in a loop (Photo 7). Place

both

threads

back

under the

presser

foot.

From the library of: Superior Sewing Machine & Supply LLC

Photo

Basic Rule:

Stop

the machine or

commence

sewing

only with the

take-up

in its

highest

position.

This

precaution

should

always

taken

prevent

jamming of the

thread

in the hook

race,

or slipping

out

of the

needle

eye.

In this

case

it is no't

necessary

to hold the

needle

and

bobbin

threads

when

commencing to

sew.

Regulating

the

Thread

Tensions

obtain

perfect

seam,

observe

the following points:

The

needle

and

bobbin

threads

should

locked

fhe

center

the

material

shown

in Fig. 8.

Turning the tension nut M clockwise

makes

the

needle

thread

tension

tighter;

turning it

counter-clockwise

will

make

looser

(Photo

6).

From the library of: Superior Sewing Machine & Supply LLC

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