IBM C-1 Bedienungsanleitung

IBM

ELECTRIC TYPEWRITER

MODEL

C-l

CUSTOMER ENGINEERING

REFERENCE MANUAL

Mechanical Principles

and

Adjustments

CONTENTS

P"g.

NelV JPeatures _________________________________ 3

Case

and

Covers

______________________________ 3

~otor

and

])rive

____

~__________________________

•

Keylevers,

Letter

Cams,

Type

Bars

____________ 7

Resilient

Keyboard

Control

____________________ 10

~aper.nent

___________________________________

Space

Bar

_____________________________________

ldargin

Reset

__________________________________ 15

!4argbl

Release

________________________________ 16

Line

Lock

_____________________________________

Carriage

and

Rails _____________________________ 18

Paper

Feed

____________________________________

I>ecelerator ___________________________________ 22

Tabulation

___________________________________ 25

Backspace ____________________________________ 30

-Carriage

Return

and

Line

Space

_______________ 31

Shut

_________________________________________

Ribbon,

Carbon

________________________________ 36

Ribbon,

Fabric

________________________________ 39

:INTERNATIONAL

BUSINESS

MACHINES

CORP.

NelV

York

22, NelV

York

Form

241-5002-0

(this

section

only)

INTERNATIONAL

BUSu\ESS

MACHINES CORP.·

590

MADISON

VENUE.

NEW

YORK

22.

NEW

YOBK

Printed

U. S.

1958

Form

241-5002-0

(

IBM ELECTRIC

STANDARD TYPEWRITER

MODEL

C-l

This

section

describes

the

new

features

the

Model

typewriter,

serial

numbers

1,100,000

and

above.

APPEARANCE.

The

case

and

cover

sections

have

been

completely

redesigned

include

many

func-

tional

and

aesthetic

improvements.

DECELERATOR.

The

decelerator

improves

and

quiets

the

carriage

action

during

tabulation

and

car-

riage

return

enabling

the

centrifugal

governor

operate

during

either

operation.

RESILIENT KEYBOARD CONTROL.

This

control

pos~tions

spring

fingers

under

the

key

levers

and

per-

mits

the

operator

set

the

touch

suit his

her

individual

requirements.

SHIFT.

The

shift

mechanism

has

been

improved

operation

and

the

adjustments

simplified.

MARGIN RESET.

The

margin

reset

mechanism

has

been

made

easier

operate

and

the

possibility

malfunction

eliminated.

PLATEN

RATCHET.

The

platen

ratchet

has

been

enclosed

within

the

left-hand

carriage-end

cover.

RIBBON

MECHANISM-FABRIC.

7he

fabric

ribbon

feed

mechanism

has

been

completely

redesigned

provide

cleaner,

faster

ribbon

changing,

and

positive

feeding.

RIBBON

MECHANISM-CARBON.

The

carbon

rib-

bon

mechanism

completely

contained

within

the

typewriter

case

and

has

been

improved

provide

easier

threading

and

accurate

feeding.

CARRIAGE.

The

Model C

typewriter

available

13, 17, 20, 24

and

inch

carriage

lengths.

CASE AND COVER SECTIONS

The

typewriter

contained

bottom

case-sec-

tion

shell. A

rear

cover-section

mounts

the

bot-

tom

case

with

two

long

screws.

The

front

cover-

section

hinged

the

bottom

case-section

and

latched

down

over

the

keyplate

latch

each

front

corner

the

bottom

case-section

(Figure

1).

Lugs

the

bottom

case-section

anchor

the

keyplate.

Carriage-end

covers

contain

the

carriage-release

but-

tons

and

are

secured

over

each

end

the

carriage

Bristo

screws

inside

the

end

covers.

Four

rubber

mounts,

screwed

the

typewriter

MODEl

CI CUSTOMER ENGINEERING

side frames

set

into

the

bottom case. Base feet pass

through

the

bottom case

and

screw into

the

rubber

mcunts. This gives

the

typewriter

a resilient mount-

ing when in

its

case

and

provides protection

the

desk

and

typewriter

when

is removed

for

servic-

ing.

A locking

bar

inside

the

bottom case-section

an-

chors

the

typewriter

to two desk mounts, secured to

the

desk. By sliding

the

locking

bar

laterally

the

machine

may

quickly

and

easily attached to

removed from

the

desk.

A removable bottom

panel

slides into

the

bottom-

case section

and

serves

protect

the

typewriter.

This

panel

can

easily removed

make

adjuat-

ments

and

may also

used

protect

the

desk

whell

working

the

machine.

I ..'

Figll"

CdS'

"nil

COfl81'

Meeh""isfIJ

Removal

CASE

aDeI

COVERS

Release

the

front

cover-latch

••

...

---

Remove

the

rear

cover by removing

its

w..

mounting screws. (

Disconnect

the

hinges from

the

ann

and

shatt

sembly,

each side

the

machine,

remcwinl

the

C clips

and

pushing

the

arms,

and

remove

the

front cover.

REFERENCE

MANUAL MODEl

Remove

the

keyplate

removing

the

keyplate

mounting-brackets

and

raising

the

front

edge

the

keyplate.

5. Disconnect

the

line

cord

the

typewriter

separating

the

male

and

female

plug.

Turn

the

machine

its back.

unscrew

the

four

base

feet,

and

allow

the

power

frame

tip

back

free

the

base section.

CARRIAGE

END

COVERS. Remove

the

platen.

feed-

roll-release,

detent-release

lever

and

loosen

the

two

end-cover

mounting-screws.

TOP

PAPER

TABLE.

Pull

the

rear

edie

and

for-

ward.

Adjustments

CASE

and

COVERS

KEYPLATE.

Adjust

forming

the

keyplate

mounting-brackets

that

the

keyplate

joins

the

front

case-section smoothly.

The

keybuttons

shall

operate

freely

without

binding.

2. HINGES.

Adjust

there

is sufficient

vertical

mo-

tion

when

the

latches

are

released

for

the

front

case-

section

clear

the

bottom

case

the

front

edge.

The

front

case

shall

not

contact

the

bail

roll

full

raiserl position.

.3. LATCHES.

Adjust

positioning

the

latch

Latch

Figure 2. Front Cover Latch

MODEl

CUSTOMER

ENGINEERING

mounting

bracket

that

the

latches

bottom

against

the

front-case-section

stock

thickness

plus

~2"-O.

There

shall

maximum

between

the

front

and

bottom

case-sections

when

latched

(Figure

2).

PLATEN

KNOBS.

Adjust

have

equal

clear-

ance

between

the

left

and

right

carriage-end

covers

%2"

3i14".

MOTOR AND DRIVE

The

motor, drive,

and

electrical

mechanisms

re-

main

essentially

the

same

operation

the

Model

B machine.

Changes

have

been

made

design

simplify

removal

and

adjustment

procedures,

and

conform to

the

new

case design.

The

motor

is a

new

3" design

used

allow

space for

rear-rail

mechanisms

and

save

weight.

The

ring

mount

the

same

the

Model B; however,

the

left

mounting

has

been

placed on

the

rear

frame

simplify

motor

removal

procedures

(Figure

3).

SwItch

IndIcator

Figul'e 3. Motol' and Dl'ive

Removal

CAUTION:

Unplug

machine

when

servicing

the-

motor,

drive,

and

electrical components.

LINE

CORD

The

line

cord

removable

means

pluggable

(

REFERENCE

MANUAL MODEl

unit

attached

the

rear

frame. Access

through

slot

low

the

rear

portion

the

bottom

case.

CAUTION:

Plug

must

properly

seated,

when

re-

installing,

prevent

possible shock

hazard.

MOTOR

Remove complete case

and

cover sections.

2. Remove

the

belts

and

the

belt

tension

adjusting-

screw

from

the

left

side-frame.

3. Disconnect

the

tab-lever

spring,

tab-actuating-

lever

spring,

and

the

tab-set

and

tab-clear

links.

Remove

the

six

mounting

studs

that

hold

the

rear

frame

the

side frames,

and

remove

the

motor

and

rear

frame.

SWITCH

The

switch

may

removed

from

the

right

side-

frame

removing

the

rear

cover,

the

switch

nut,

and

disconnecting

the

switch

wiring.

POWER ROLL

Remove complete case

and

cover

sections.

Refer

Model

BI,

Power

Roll Removal.

Note:

The

lower

power-roll-bearing-retainer

screw

longer

and

serves

also as a

spring

anchor

for

the

ribbon

mechanism. Adjustments

SWITCH.

Refer

Model

BI,

Motor

and

Drive.

Adjustment

BEARINGS.

Refer

Model

BI,

Motor

and

Drive.

Adjustment

3. POWER ROLL END PLAY.

Refer

Model

BI,

Motor

and

Drive,

Adjustment

4. DRIVEN BELT.

Refer

Model

BI.

Motor

and

Drive,

Adjustment

POWER ROLL SPEED.

Refer

Model

BI,

Mo-

tor

and

Drive,

Adjustment

DRIVE BELT.

Refer

Model

BI.

Motor

and

Drive,

Adjustment

7. MOTOR MOUNTINGS.

Belt

tension

may

ad-

justed

without

removing

the

typewriter

from

the

bottom

case-section

loosening

the

mounting

screws

and

repositioning

the

motor.

KEYLEVERS,C~S,TYPEBARS

The

keylever, cam.

and

typebar

operation

the

Model C

theoretically

the

same

the

Model

B. However,

the

keylevers, cams,

and

trip

levers

have,

MODEl

CUSTOMER ENGINEERING

been

slightly

redesigned

order

improve

their

ration.

These

parts

are

not

interchangeable

with

model

typewriters.

character

keyboard

available.

The

underscore

the

only

repeat/non-repeat

letter

key

provided

standard

equipment

and

available

either

position

41.

The

keylevers

are

mounted

redesigned

key-

lever-bearing

support

and

fulcrum

heavier

ful-

crum

rod

held

formed

lugs

the

keylever-bear-

ing

support.

The

assembly

mounted

the

side

frames

and

adjustable

order

obtain

proper

keylever

trip

lever

clearance

(Figure

4).

'ij

\-CIiP

PiK,,'e

Keylefler Bearing

SII/Jpo,t

Each

row

keylevers

has

different

restoring

spring. color coded for easy identification,

provide

uniform

touch.

The

keylever

locking

bar

is designed

that

all

functional

and

letter

keylevers

except

the

shift

are

locked

when

the

switch

the

OFF

po-

sition.

Redesign

the

repeat

letter

keylever

eliminate

the

spring-loaded

plunger

has

caused

the

key

lever

guide-comb

redesigned.

Plunger

positions

are

available

for

carriage

return,

tab,

and

backspace

.only.

Repeat/non-repeat

letter

key

operation

has

been

altered

replacing

the

spring-loaded

plunger

with

a single piece

keylever

containing

elongated

.£FERENCE MANUAL

MODEl

fulcrum-rod

hole. A

spring

is connected

between

the

keylever

and

spring

bracket

above

the

keylever

(Figure

5). .

the

keylever

depressed

single

operation

takes

place. As

pressure

applied

the

resistance

the

upper

spring

is overcome and

the

fulcrum

point

the

keylever

lowered.

This

places

the

repeat

step

the

trip-lever

lug

the

op-

erating

position.

Figlln 5.

Rq,_/Non·Rej1UI

K~lwN

additional

repeat/non-repeat

letter

cams

are

de-

sired

a two-piece

keylever

may

installed

any

keylever

position.

The

letter

cam

has

been

reshaped

for

smoother

operation

and

not

interchan~eable

with

models. Removal

KEYLEVEBS

Remove

the

typewriter

from

the

base

section.

Remove

the

resilient-keyboard-control

indicator.

Disconnect

the

spacebar-switch-Iock shaft.

4. Remove

the

front

frame

removing

the

four

mounting

studs.

Disconnect

the

keylever

spring.

Insert

a follow-up

fulcrum

rod

the

depth

the

desired

keylever.

Remove

the

two

mounting

studs

from

the

key-

lever

guide-comb

and

pivot

the

guide-comb

forward.

Lower

the

rear

the

keylever

between

the

cams

and

push

toward

the

rear

the

machine

until

the

keylever

clears

the

guide-comb.

Remove

the

keylever

pulling

forward.

MODEL

CUSTOMER

ENGINEERING

LETTER

CAMS

Refer

Model

Bl,

Cam

Removal

Procedure.

Adjustments

1. CAM CLEARANCE

•.

015"

.020".

Refer

Model

section.

2. KEYLEVER

BEARING

SUPPORT.

Adjust

po-

sitioning

the

key

lever-bearing

support

that

the

keylevers

trip

the

cams

when

the

keylever

¥.!2'"

plus

minus

;.64"

from

the

bottom

the

key

lever

, guide-comb

(Figure

4).

3. INDIVIDUAL KEYLEVERS. Raise

lower

conform

adjustment

Spread

key

lever

lugs

with

screwdriver

compress lugs

with

pliers.

NOTE: Do

not

form

keylevers

with

"T"

bender

hammer

damage

the

keylever-bearing

support

will

result.

RESILIENT KEYBOARD CONTROL

The

resilient-keyboard

control, located

the

left

the

impression

control

indicator, provides

the

op-

erator

with

means

varying

the

resistance

the

keylevers

suit

her

touch

(Figure

6).

This

added

resistance

is supplied

flat

springs,

mounted

the

path

travel

the

keylevers,

and

determined

varying

the

position

the

flat

springs.

Three

major

settings

are

available

the

operator:

1. L - No

flat

spring

contact.

M -

Some

flat

spring

contact.

H -

Maximum

flat

spring

contact.

Figure

Resilient Keyboard Control

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