Pfaff 145 Manuale utente

I—

General

The

Pfatf

145

special-purpose

sewing

machine

equipped

with

unison

feed,

smoothly

working

sleeve

take-up

and

vertical

rotary

hook,

which

sews

forward and

backward.

chiefly

used

for

sewing

multiple

plies where

important that

all

finish

out

evenly.

Its

permissible

top

speed

2,800

s.p.m.

When

sewing

tightly

woven

and heavily

dressed

materials,

the

sewing

speed

should

reduced

order

prevent overheating

the

needle.

The maximum

speeds

which

can

attained

with

machines

fitted

with

special

attach

ments

trimming

mechanisms

often

are

far

below

the

recommended

top

speeds

cause

the

nature

the

work

and

the

thickness

the

material

tend

limit

the

chine’s

capacity.

the

maximum

speed

exceeded,

trouble

may

develop

chiefly

the

trimming

mechanism.

avoid

trouble

the

mechanism,

run

the

machine

about

per

cent

of its

top

speed

until

the

parts

which

are

movable

contact

have

become

thoroughly

glazed

their

action upon

each other.

This

should

normally

the

case

after

about

two

weeks’

constant

use.

All

machines

are

regularly

equipped

with

fixed

pulley

which

cast

one

with

the

balance

wheel.

desired,

however,

they

can

supplied

with

disengageable

pulley.

fitted

with

the latter

type

pulley,

the machine

dispatched

with

the sewing

mechanism

disengaged.

engage

this

mechanism

for

sewing,

hold

the

balance

wheel

steady

with

your

left

hand

and

turn

the

large

lock

nut

clockwise.

Fundamentals

Machine

Operation

Before

you

put

the

machine

operation

for

the

first

time,

carefully

remove

all

dust

which

has

accumulated

transit

and

oil

the

machine

thoroughly (see

Chapter

3).

Oil

the

machine

only

with

Pfaff

sewing

machine

oil

which

non-resinous

and

acid-free.

Never

run

threaded

machine

unless

you

have

fabric

under

the

presser

fodt.

Before

you

start

sewing,

lay

both

threads

back

under

the

presser

foot.

prevent

thread

jamming,

hold

both

thread

ends

until

the

machine

has made

few

stitches.

not

pull

the

material

while

stitching;

the

machine

will

feed

the fabric

automatically.

Use

needles

the

correct

system

only

(see

Chapter

6).

Never

use

rusty

needles.

Use

high-quality

threads

only.

Always

bring

the take-up

lever

its

highest

point before

you

remove

the

material.

Cleaning

and

Oiling

Careful

cleaning

and regu’ar

oiling

will

increase

the

service

life

your

machine.

After

you

have removed

the

dust

which

has

accumulated

the machine

transit, take

clean

rag

and

remove

the

grease

from

all

nickel-plated

and

polished

parts.

Apply

few

drops

kerosene

all

oiling

points

marked

arrows

Figs.

and

raise

the presser,

foot,

unthread

the

needle

and remove

the

bobbin

case.

Twice

week

apply

‘a

few

drops

Pfaff

sewing

machine

oil No.

280-1-120122

all

points

of friction.

The

sewing

hook must

oiled

each

day

the

machine

operation

(see

arrow

and

oilhole

Fig.

4).

Although

the

bevel

gears

are

enclosed

cases

and

require

special

maintenance,

recommended

replace

the

old

grease

Pfaff

grease

No.

280-1-120243

once

year.

Owing

the

special

lubricating

properties

this

grease,

the flanks

the

bevel

gear

teeth should be

greased

only

lightly.

9926

9925

___-

Fig.1

Fig.

From

time

remove the

needle

plate

after

taking

out

set

screws

and

(Fig.

and

remove

the

lint

which

has

accumulated

underneath.

The

cleaning

the hook

dis

cussed

Chapter

13.

9927

Fig.

9928

Fig.

Winding

the

Bobbin

Place

spool

thread

(Fig.

and

pass

the

thread

from

left

right

through

eyelet

clockwise

around

and

between

tension discs

and

from

the

inside

through

the

slot

the bobbin.

Wind

few

turns

thread

the

bobbin and

place

the

latter

spindle

Start

the

bobbin winder

pressing

down

lever

The bobbin

wound

automatically

while

the machine

sewing.

When a

sufficient

amount

thread has

been

wound

the

bobbin,

latch

stops

the

bobbin

winder.

The

amount

thread

wound

the bobbin

regulated

screw

Turn

this

screw

clockwise

for

thread,

counter-clockwise

for

less

thread.

the

thread

should

pile

one end

the

bobbin,

adjust

the

position

the

bobbin

winder

tension

sideways,

may

required.

To do

this,

loosen

screw

adjust

the

tension

and

tighten

the

set

screw

again.

The

tension

the thread

regulated

turning

nut

Make

sure

the

bobbin winder

pulley

rotates

the direction indicated

arrow

Fig.

R9929

Fig.5

Changing

the

Bobbin

and Threading the

Bobbin

Case

Raise

the

needle

its

highest

position

and

open

the

bed

slide.

With

the

thumb

your

right

hand

open

latch

(Fig.

6),

then

push

the

thumb

nail

under

the

projecting

flange

the bobbin

case

cap and

lift

the

latter

out

the

machine

with

thumb

and

fore

finger.

The

bobbin

now

exposed

the

bobbin

case

base

and

can

taken

out easily.

9930

Fig.

Place

full

bobbin

the bobbin

case

cap

that

the

thread

draws

top

from

the

left

toward

the

right,

shown

Fig.

Hold

the

bobbin

steady

the

bobbin

case,

pull

the

thread

into

slot

and draw

under

the

tension

spring

Leave

loose

end

thread

about

(abt.

3”)

long

outside

the

bobbin

case.

Place

the

bobbin

case

with

the

bobbin

the

center

stud

the

bobbin

case

base

and

latch

(Fig.

well

as the

bed

slide.

9931

Fig.7

Setecting

the

Correct

Need!e

ensure

reliable

stitch formation,

make

sure

the

correct

needle

inserted

the

machine.

Needle

Systems

The

Pfaff

145

unison-feed

machine

Models

and

uses

System

134

needles,

while Model

uses

System

134-35,

and

Model

System

190

needles.

Needle

Point

Styles

These

needles are

available

with

different

type

points

suit

different

requirements.

The

various

needle

point

styles

are

identified

letter

following

the

needle

system,

e.g.

134

Fabrics

are stitched

with

round-point

needle,

identified

14,

while for

leather

work

needles

are available

with

the

following

point

styles:

•

Narrow

reverse

twist

point

Narrow twist

point

Lack

—

Patent

leather

point

•

Extra-narrow

wedge

point

PCr

Extra-narrow

wedge

point

with

right-twist

groove

PCI

Extra-narrow

wedge

point

with

left-twist

groove

Narrow

cross

point:

for

long,

straight

stitches.

Triangular

point:

for

short,

straight

stitches.

Reverse

twist

spear

point

Twist

spear

point

Rubberized

fabrics

and

plastic

materials

are

sewn

with

round-point

needles.

Needle and

Thread

Sizes

The

correct

needle

size

dependent

the

fabric and

thread

weights.

For

best

results,

select

the

needle

thin

possible,

but

make

sure

the

thread

can

be pulled

through

the

needle

eye easily.

The

needle

size

should

selected

match

not

only

the

thread

weight,

but

also

the

machine

model.

The

needle

size

indicated

the

shank

hundredths

millimeters.

Thus,

No. 100

needle

has

shaft

diameter

100

/loo

mm.

Select

the

proper

needle

and

thread

sizes

from

the chart

below:

Model

Needle

Size Cotton

Silk

Synthetic

Linen

130/3 140/3

200/3—150/3

130/4

100/3 120/3

140/3—120/3

H1,H2

100/4

80/3

100/3

120/3—100/3

80/4

70/3—60/3

80/3

100/3—

80/3

70/3

70/4—60/4

100

50/3—40/3

70/3

60/3

50/4—40/4

110

30/3

60/3

60/3 50/3

30/4

30/6

120

24/3

50/3

40/3

24/6

130

20/3

40/3

35/3

140

12/3

30/3

H2,H3,H4

12/6

150

10/9

25/3

20/3

25/3

8/6

160

6/6 20/3

18/3

20/3

170

6-ply

fancy-

10/3

15/3

18/3

effect

thread

180

9-ply

fancy-

10/3

18/3

effect

thread

190

9-ply

fancy-

0.6

dia.

18/4

effect

thread

200

12-ply

fancy-

1.0

dia.

18/4

effect

thread

Changing the

Needle

Raise the

needle

bar

its

highest

point,

loosen

needle set

screw

(Fig.

half

turn,

and

pull

the

damaged needle

out

the

needle

clamp.

Insert

new

needle

into

the

clamp,

making

sure

that

its

short

groove

faces

toward

the

sewing

hook.

Push

the needle

far

will

and

tighten

needle

set

screw

securely.

Never

use

rusty

needles

Threading

the

Needle

Pass

the

thread

from

the

spool

and

through

the

hole

the

thread

guide

the

thread

unwinder,

then

down

and

through

the

holes

stud

(Fig.

and

thread

guide

around

thread retainer

clockwise

around

and

between

tension

discs

under

thread

controller disc

through

thread

check

spring

and

through

thread

guide

from

right

to left

through

the

hole

takeup

lever

then

down

and

through thread

guides

and

from left

right

through the

eye

needle

11.

R9932

Fig.8

‘‘

Drawing

the

Bobbin

Thread

Hold

the end

the

needle

thread

and

turn

the

balance

wheel

toward

you,

indicated

arrow

Fig.

until

the

needle

moves

down

and

again.

the

needle

moves

up,

catches

the bobbin

thread

which

comes

with

through

the

needle

hole.

Lay

both

threads

back

under

the

presser

foot,

place

the

material

the

machine

and

lower

the

presser

foot.

Hold

the

ends

both

threads

until

the

machine

has made

few

stitches.

10.

Regulating

the

Thread

Tensions

Adjusting the

Upper

Tension

Turn

tension

nut

(Fig.

clockwise

for

tension,

counter-clockwise

for

less

tension.

the

upper

tension

too

loose,

the bobbin

thread

will

draw the

needle

thread

down

that

forms

small

kinks

the

underside

the

material,

shown

Fig.

the

upper tension

too

tight,

the bobbin

thread

will

be pulled

(Fig.

10)

the

needle

thread

will

break.

Both

tensions

are correctly balanced,

the

needle

and

bobbin

threads

interlock

the

center

the material,

shown

Fig.

11.

Fig.

When

you

raise

the

presser

bar,

the

upper

tension

released

automatically

that

the

work

can

easily

removed

from

the

machine.

this,

pull

the

work

back

(in

for

ward

feeding

direction), never

forward

as this

may

cause

bending

the

needle,

skipping

stitches

thread

breaking.

Upper

tension

too

loose

lower

tension

too

tight

Upper

tension

too

tight

lower

tension

too

loose

Both

tensions

properly

balanced

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