Pfaff 469 User manual

PFAFF

CIfafD

Instruction

Book

From the library of: Superior Sewing Machine & Supply LLC

(PFAFP

469

High-Speed

Lockstitch

Differential-Feed

Sewing

Machine

Instruction

Book

G-M

PFAFFAG

KAISERSLAUTERN

BRANCH

From the library of: Superior Sewing Machine & Supply LLC

Foreword

The

scope

of this book is confined to such instructions as are conditioned by variations in the

design of the Pfaff 469 high-speed differential-feed sewing machine as compared with other

Pfaff

high-speed

seamers.

outstanding

feature

ofthe

Pfaff

469

isthe

incorporation

sealed-for-life

ball

and

needle

bearings

the

machine

arm

and

the

needle

head.

Another salient feature is the arrangement of the feed driving and feed lifting eccentrics on the

bottom

rather

than

the

arm

shaft.

The

bottom

shaft

driven

from

the

arm

shaft

cleated

belt

and

drives

the

hook

shaft

by means of helical gears. These driving elements are

enclosed

in an oiltight gear case and are lubricated by an oil-soaked foam plastic sheet. The assemblies

controlling the differential-feed are disposed on two shafts inside and outside the gear case.

The sewing hook is lubricated by means of a gravity lubrication system incorporating a

centrifugal

switch.

Since the armshaft is belted to the

motor,

the

machine

c^n be tilted back without

remoylng

the

V-belt.

Additional features of this

new

high-speed

seamer

are a novel stitch length control,

separate

forward-reverse

feed

control,

built-in

bobbin

winder

and

built-in

lifting lever. •

Operators will like the modern functional design and the stream-lined belt guard which is

attached

the

machine

arm.

PFAFF

From the library of: Superior Sewing Machine & Supply LLC

8766

Setting

the

Machine

Like all

the

other

models

the

new

range

high-speed

seamers,

the

Pfaff

469

differential-

feed

sewing

machine

can only be

set

up on a

power

table

fitted with

the

new

rubber

hinge

bracket

and

cushion

set

The front corners of

the

bedplate are face-milled on

the

underside and rest on matching

rubber

cushions

which

are

recessed

into

the

tabletop.

the

back,

the

new-type

hinge

studs

connect

the

machine

with

the

pins

the

two

rubber

hinge

brackets.

This

mounting

prevents

the

machine

from

coming

contact

with

the

tabletop.

The

machine

is carefully

balanced

and

causes

practically no vibration.

Whatever

vibration

there

Is will be

absorbed

almost

completely

the

rubber

hinge

brackets.

Mounting

the

V-Belt

The machine are shipped with

the

belt guard removed. To mount

the

V-belt, lift

the

sewing

head

slightly

and

place

the

belt

the

machine

and

motor

pulleys.

From the library of: Superior Sewing Machine & Supply LLC

Both belt guard sections are secured to the arm standard by inserting screw dthrough hole

and spacing sleeve c in the rear section into screwhole d1 in the machine base and

tightening

securely.

Slightly turn

out

screws a1 and

(Fig. 1) and push the

two

belt guard sections together,

holding them

the

machine so

that

the

above

screws

enter

the

appropriate slots in

the

back

wall

the

belt

guard.

To tighten

the

screws, insert

the

screwdriver through

openings

b1 and

(Fig. 2).

Test-Running

the

Machine

Before you test-run

the

machine, carefully remove all dirt

which

may

have

accumulated

transit. Be

sure

use

only

brush

and

cleaning

rag for

this

purpose.

The

Pfaff

469

must

never

rinsed

cleaned

with

kerosene'because

there

is a

danger

that

the cleaning fluid enters the sealed-for-life bearings and dissolves the grease. For the same

reason, kerosene or gasoline must not be used for the regular cleaning of the machine.

Never

attempt

to eliminate hard working of

the

machine by squirting oil freely into

the

bearings

which you believe to be responsible for this fault. If oil enters the sealed-for-life bearings,

the grease will be thinned and flung

out

of the bearing, thus rendering permanent lubrication

ineffective.

;

9145

Fig. 1 R

9144

Fig.

From the library of: Superior Sewing Machine & Supply LLC

Winding

the

Bobbin

The new high-speed seamer is fitted with a bobbin winder which is incorporated in the face

cover

rather

than

mounted

at the

balance-wheel

end

of the

machine,

was

customary

previously (Fig. 5).

Arranged

at a convenient height, it is easy to operate and enables the

operator

wind

bobbins

quickly

and

neatly.

The bobbin winder driving motion emanates from the take-up crank. When the bobbin winder

is engaged,

driving

crank F at the

rear

end of

spindle

17 is pushed into the

circular

path of

stud K

which

engagesthe crankand,inthis

way,

drives

the

bobbin

winder

(Fig.

3).The

bobbin

winder spindle is

carried

in a self-lubricating sintermetal bearing which requires no additional

lubrication.

engage

the

bobbin winder, simply

depress

stop

latch a located

above

the

bobbin

winder

spindle

(Fig.

4). Thisaction causes the

spindle

to shift

slightly

to the

right

which

position

It is retained until a sufficient amount of thread has been wound on the bobbin. The thread

wound on the bobbin pushes the cam up and thereby stops the bobbin winder. The amount

ofthreadto be woundon the

bobbin

can be

regulated

loosening

screw b and setting cam

a higher or lower, as may be required. Set the cam higher for more thread, or lower for less

thread.

8643

Fig. 3

From the library of: Superior Sewing Machine & Supply LLC

Fig, 4

shows

how

to thread

the

machine for bobbin winding. Place

the

spool

thread

the

right-hand spool pin of

the

thread

stand.

Lead the thread from spool

(Fig. 4) up and

through

the top thread guide of the thread stand,

down

and

through

thread

guides

12,

and

14,

clockwise

around

thread

tension

and

bobbin

16.

it is

recommended

take

the

thread

after

has

been

pulled

through

thread

guide

and

wind

few

turns

the

bobbin,

then

lead

clockwise

around

thread

tension

and

place

the

bobbin

spindle

17.

Depending on

the

type of thread used, it

should

wound

the

bobbin tighter or looser.

The

thread

tension

regulated

turning

thumb

nut

back

the

tension

discs

(Fig.

4).

Turn

this

nut

clockwise

for

looser

tension,

counter-clockwise

for

tighter

tension.

the

thread

should

pile up at

one

end

the

bobbin,

adjust

the

position

the

tension

stud.

The

set

screw

which

secures

this

stud

position

can

reached

from

below.

Whenever you have removed an empty bobbin from

the

machine, wind a

few

turns

of thread

on it,

place

it on

the

bobbin

winder

spindle

and

start

the

winder.

It is a

waste

time

work

with

single

bobbin

or a

single

spool

thread

because

this

requires an additional unthreading and threading of

the

needle,

and

you

cannot

sew

while

winding

the

bobbin.

9141

Fig. 4

From the library of: Superior Sewing Machine & Supply LLC

Threading

the

Needle

Because of the high speed of this machine, it is particularly importantthat the thread passes

the

needle

smoothly.

Lead

the

thread from spool 1 up to the top thread guide of

the

thread

stand

and

down

thread guide 2. it is recommended to pass the thread first through the

vertical

hole

from

top

to bottom and then through the transverse hole of the guide, as shown in Figs. 5 and

5a,

in order to prevent it from snarling up on the guide and breaking.

Now lead the thread through all three holes of thread retainer 3 (from top to bottom), clockwise

around and between tension discs 4, through thread check spring 5, under slack thread

regulator 6, through thread guide 7. from right to left through the hole In take-up lever 8.

through

thread

guides

7, 9

and

10,

and from left to right

through

needle eye

11.

9148

Fig.

Fig. 5

From the library of: Superior Sewing Machine & Supply LLC

Regulating

the

Stitch

Length

Two

separate

controls

serve

regulate

the

length

stitch

and

reverse

the

direction

of feed.

The

large

diameter

stitch

length

control

makes

for an

exceedingly

fine

stitch

length

regulation.

When

this

control

turned

one

tooth,

the

stitch

length

increased

decreased

•

by Vss". or

0.5

mm.

The

stitch

lengths

from 0 to 5/2

stitches

per

inch

are marked on

the

teeth

the

stitch

length

control

millimeters

(Fig.

6).

order

avoid

that

the

stitch

length

setting

will be

disturbed

while

sewing,

stitch

length

control

secured

position

by a locking lever

marked

in Fig. 6. This lever

must

pushed

back

slightly

when

setting

the

stitch

length.

Finger-tip control Tserves to reverse

the

direction of feed

and

operated

for backtacking.

When

lever T is

pressed

down,

the

machine

will

sew

in reverse, making

stitches

the

length

set.

When

lever

T is

released,

the

direction

feed

instantly

reversed

spring

action

and

the

machine

will

resume

forward

stitching.

desired,

the

machine

can

be fitted with a

second

treadle

for

switching

from

forward

backward

sewing.

;

••

7. Regulating the Pressure on the Material ?

powerful

flat

spring

the

machine

arm

exerts

the

necessary

pressure

onthe

sewing

fqiSt.

;

The

amount

pressure

regulated

turning

small

set

screw

which

can

reachecf'by,

inserting

screwdriver

through

hole

the

right

the

spool

(Fig.

6a).

Tur^

the

screw

in for

pressure,

out

for

less

pressure.

r - ^

Fig. 6 R

9386

Fig.

9147

From the library of: Superior Sewing Machine & Supply LLC

Lifting

the

Presser

Bar

Since

the

arm

standard

has

been

set

closer

to the

rear

edge

the

bedplate,

the

presser

bar

lifting

mechanism

couldbe enclosedinthe

machine

armso that it isnot

visible

onthe outside.

mount

the

knee

lever,

push

over

the

lower

end

vertical

shaft

under

the

tabletop.

The

lever

held

place

angular

bracket

which

snaps

into

place

after

transverse

has

entered

cutouts

t in

right-angled

coupling

sleeve

(Fig.

7).

When

the

coupling

sleeve

pushed

onto

the

end

ofthe

shaft,

resilient

bracket

must

compressed

open

slightly

(see

Fig.

7).

Motion

istransmitted

from

the

vertical

shafttothe

presser

footby

means

ofa

crank,

aconnection

and a

bellcrank

lever

which

raises

the

presser

foot.

small

hand

lever

(Fig.

serves

lock

the

presser

foot

inits

highest

position.

This

lever

flicked

to the

left

retain

the

presser

foot after it has been raised by knee action.

facilitate

tilting

the

sewing

head

back

without

removing

the

knee

lever

completely,

the

knee

lever

rock

shaftis no

longer

screwed

to the

angular

sleeve,

but

rather

held

place

bya

spring-loaded pin V (Fig. 7). As a

result,

the knee lever can be

pulled

forward

off its shaft

with

ajerk.

A new feature ofthis knee leveris a hinged knee platefitted with a foam plastic pad which is

contoured

hug

the

operator's

knee.

9158

Fig. 7

From the library of: Superior Sewing Machine & Supply LLC

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