SEND-RECEIVE AND RECEIVE-ONLY PAGE PRINTER SETS

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78S05452A000100040009-4
• Release Decision: RIFPUB
• Original Classification: K
• Document Page Count: 8
• Document Creation Date: December 9, 2016
• Document Release Date: March 23, 2001
• Sequence Number: 9
• Content Type: MISC

01/07/16: CIA-RDP78S05452A0001Q0Q40009-4
SEND-RECEIVE and
RECEIVE-ONLY
PAGE PRINTER SETS
GENERAL DESCRIPTION
The Model 28 Page Printer Sets are de-
signed for use as data transmission ter-
minals in either cross office or cross country
record communications. The Send-Receive
model provides maximum flexibility for
applications requiring both transmission
and reception facilities. The Receive-Only
model is identical except that it does not
have the mechanisms for generating the
five level Start-Stop signal.
The Page Printer Sets require two external
connections: a power lead to a conven-
tional, 110 volt, AC or DC source; and a
signal line to interconnect associated
equipment. Signal line battery may be ob-
tained from either a remote or internal
DC supply. The Typing Unit requires a
neutral signal in sequential form, but pro-
vision may be made for the acceptance of
either polarized or parallel input.
Table Model Console Table Model Console Rack Mounted Cover
with Receive-Only Base with Send-Receive Keyboard with Send-Receive Keyboard
Model 28
Printer
Model Number
A SET A TYPICAL COMPONENT THE DESIGNATION
CONSISTS OF: DE S IGNATION IS: INDICATES:
Typing
Unit
Transmitting
Keyboard
Electrical
Service
Unit
I Stunt Box Arrangement
Model 28
Keyboard
Model Number
Keytop Arrangement
L K 11 ARA
(Model Number includes accessories)
Model 28
Base
Model Number
I r - Accessory Group
(Model Number will later incorporate
B 4 / 146 accessories)
I I I I
L ESU 7 / 152
- Model 28
- Electrical Service Unit
Model Number
Accessory Group
Model 28
- Motor Unit
- Model Number
Model 28
Apparatus Cabinet (Floor-Table)
(Printer Cover) (Rack Mount)
Model Number
Color
Accessory Group
Floor Model Console
with Send-Receive Keyboard
Typing Unit
Motor Unit (Synchronous)
Electrical Service Unit
Send-Receive Keyboard
Receive-Only Base
Floor Console
Table Console
Rack Mounted Cover
20 lbs.
8 lbs.
6 lbs.
14 lbs.
9 lbs.
85 lbs.
45 lbs.
28 lbs.
SHIPPING, WEIGHTS
Floor Model Table Model Rack Mounted
Set Set Set
Domestic Packing 182 lbs. 142 lbs. 125 lbs.
Commercial Export Packing 331 lbs. 250 lbs. 250 lbs.
Base Unit
Consoles
Electrical Service Unit
Keyboard
Motors
Although a Set's components are available
for separate, system installation, they are
normally assembled in either a floor or
table model console. For rack mounting a
special, close-fitting cover is furnished.
A wide variety of optional accessories
permit the tailoring of each set for specific
application requirements. These accesso-
ries may be factory installed or furnished
separately.
Floor Model Console
with Receive-Only Base
-INDEX
Page
U
0
Multi-wire Distributor
Stunt Box
Timing Diagram
Typing Unit
Wiring Diagram
0
Approved For Release 2001/07/16 : CIA-RDP78SO5452A000100040009-4
 SEND-RECEIVE K OARD (LK) &yEIVE-ONLY BASE (LB) - - -- ----- -
Both the Send-Receive Keyboard and Receive-Only Base provide
mounting facilities for the typing unit, motor, gear bracket and
the mechanisms required for local control of the page printer set.
Only the Send-Receive Keyboard is equipped with the parts neces-
sary for the generation and transmission of a conventional, five
level, start-stop signal.
The Send-Receive Keyboard or Receive-Only Base is attached to
a shock mounted cradle assembly in the floor and table model
consoles. In the rack mounted set the Send-Receive Keyboard is
attached to a base plate which is clamped to the printer cover.
Design of the cover does not permit use of the Receive-Only Base.
Signal and control leads terminate at a 21-point Connector;
power leads, from the motor, connect to a 4-point terminal board.
Both plug and terminal board are located at the rear of the units.
Local Control Keys
(Transmission Keys
II ACCESSORIES
Operator's Instruction
Panels
Margin Indicator Lamp
Contact
Electrical Noise
Suppression
Motor Control Time
Delay Mechanism
III LOCAL CONTROLS
Local Carriage Return
Local Line Feed
Keyboard Lock/Unlock
(Mechanical)
-
Keyboard Lock/Unlock
(Electrical)
Repeat
Signal 'Line Break
1Local Backspace
Local Reverse Line Feed
Repeat Space
Print/Non-Print Switch
Local Transmitter Control
Space provided for 11.
Keys are red with white
characters.
32 including Space Bar.
Keys are grey-green with
white characters.
Standard-2 panels
2" X 41/x"
Standard
Optional
Standard
Standard
Optional
Standard
Standard
Space provided for 3.
Keys are grey-green with
white characters.
Standard-2 panels
11/4" X 21h"
Standard
Standard
? 1959 by TELETYPECORPORA
or Release 2001/07/16
D2 /3 E T Y U 0 P
O
D 6 O O H L
Z x O O B O O LTRS FEED O
00000D7
Standard and optional
local controls are listed
below.
Upper case symbols may
be selected to meet I
application require-
ments.
Black paper, white car-
bon and plastic covers
included.
0 erating point is
adjustable.
RF Filter connected
across signal generator
contacts.
Responds to extended
period of idle signal line
time.
Chars./ Idle Time
Min. Required
600 53 - 106 sec.
460 69 - 138 sec.
368 86 - 173 sec.
No signal transmitted.
No signal transmitted.
Mechanical block on
keys.
May also be operated
on-line, through stunt
box.
Electrical shunting of
signal generator. May
also be operated on-line
through stunt box.
Continuous character
transmission.
Mechanical Break parts
for Keyboard only. Elec-
trical Break for Key-
board or Base.
Modification Kit in-
cludes motor control
parts but not line feed
parts.
May also be operated
on-line, through stunt
box.
May also be operated
on-line, through stunt
box.
Continuous Space trans-
mission while Space Bar
is depressed.
For local control of
selective calling typing
units.
Employs Margin Indica-
tor Lamp Contact. Re-
Set with
Send-Receive Keyboard
(Shown tilted for inspection)
Set with
Receive-Only Base
(Shown tilted for inspection)
Fm 15%-
Send-Receive
Keyboard -
Top view
Send-Receive
Keyboard -
Side view
 '/,"
Approved For Release 2Q01/07/16: CIA-RDP78SO5452A0001QQ 15
Q Ofl7=4
TYPING UNIT (LP) .
The Typing Unit contains the mechanisms necessary
for translating electrical input signals into printed,
alpha-numeric characters or functional control opera-
tions ranging from internal print suppression to super-
visory control of external equipment. The unit will
accommodate friction or sprocket fed paper, in single
or multi-copy form, either rolled or fanfolded. Typebox
or individual pallet substitution is a simple operation
requiring little time and no re-adjustment.
The Typing Unit is mounted on either the Send-
Receive Keyboard or Receive-Only Base and posi-
tioned on the locating studs provided. The motor
power is coupled through pinion and driving gears to
the Typing Unit's main shaft. All electrical connec-
tions terminate at a 21-point Connector located on the
right side frame. An additional plug is available if
required.
TYPE PALLET ARRANGEMENTS
Standard, upper case pallet arrangements are:
Communications (Punctuation symbols)
Fractions
Weather Symbols
Individual pallets, for upper and lower case char-
acters, may be ordered separately for field installa-
tion.
V
TYPING UNIT PAPER
Mi The dimensions of the standard, yellow paper roll,
used by many customers on friction feed typing
units, are:
Outside diameter ........................... 41/z"
Width .............................................. 8.453" ? .031"
Length .... -.......... ........ ............... ...... 325'
Core diameter ..................................1"
Core thickness ..................................125"
ut TYa!-SamPlt%-- -
Murray
.103"
.162"
10
6 3
Gothic
.103"
none
10
6 3
Gothic
.103"
.162"
12G
6 3
Long Gothic
.120"
.170"
d
6 3
Large Gothic
.180"
.180"
d
c 3
ABCDEFGHIJKLMNOP12'45
ABCDEFGHIJKLMNOP12345
ABCOEFGNIJKLMNOP123456789
ABCDEFGH IJKLMNOP1234
ABCDEFGH IJKLMNOP12345
I,I,I, I,1.I,I, 111, I,i.I,i,I I,1_2JLI,
a Require special parts which may be ordered separately to Special parts also available for triple line feed and four lines-per-inch c Not recommended for single Line Feed
d Not recommended for 10 characters per inch
PLATENS
Construction Rubber covered cylinder, I Rubber covered cylinder,
f d t Iaten shaft 1 free on platen shaft.
e o
i
Length
Paper Width
Characters per line
(10 per inch)
p _
x
83/4' Selected for desired form I
width. (See Below Right)
Any width up to 81/2" Minimum: 35/e"
Maximum: 9" (See Below
Margin is adjustable
from 1 to 85 characters
Typing Unit - Shown mounted in set
Style_ ....................................Black record ribbon-
Underwood spool
Length .................................... 33'
Width.- .................................. t/2?
Thickness ...............................0055"
Reversing eyelet thickness.. .060" min.
Reversing eyelet location..... Min. 4" between eye-
let and spool hook
Right) _--__ -
Margin is adjustable
from 1 to maximum
number indicated in
chart.
flutes
Horizontal Tabulation Available with or without transmitter
control parts.__
Available with or without transmitter
control parts. May be used on the
following form lengths (in inches):
Automatic Carriage Return/
Line Feed
Auxiliary Connector
Friction Fed Sprocket Fed
2, 4, 8 51/2, 11
41/4, 81/2 3, 6, 12
51/2, 11 41/2, 9 I 61/2, 13
91/2 31/2, 7, 14
5, 10 71/2, 15
Cannot be used on certain selective
calling units.
An additional Connector installed
next to present one.
i Vijeiou ......... a?Y M,a?c.
Extension Rods ' Permits standing unit on either end for
L -I-maintenance.
SINGLE SHEET OR MULTI-COPY
SPROCKET FEED FORM
.125'r ? .0001"
SPROCKET PIN DIAMETER
I/4 FROM PIN TO EDGE OF SPROCKET
WHERE FORM WIDTH IS MEASURED
AVAILABLE SPROCKET FEED PLATENS
!i SEPARATION OF
F SPROCKET SPROCKET PINS
3
9 80 81/2 75 51/2
8 70 5
71/z 65 41/2
7 60 45/,6
61/2 55
6 % i 54 41/a
4
61/4 53 3%
6 L 50
NOTE: Certain accessories listed on page 2 (Keyboard) also apply to and NOTE: a-On a basis of ten characters per inch.
require parts for the TYPING UNIT.
Approved For Release 2001/07/16 : CIA-RDP78SO5452A000100040009-4
 m
roved For Release 2001/07/16: CIA-R 000100040009-4
_ `~r3 FUNCTION ~r?
9~..
153440- Typical, pre-coded function
Uncoded ('Universal') bar for specific character
function bar or condition
STUNT BOX Rear view
The Stunt Box is installed in the rear of the Typing Unit and
driven from a clutch assembly on the main shaft. Forty-two
functional control positions are provided. Less than half of these
are reserved for specific functions, the remainder may be
arbitrarily allocated for desired operations.
Individual function mechanisms may be selected by a single
character or upon the receipt of a sequence of characters. The
mechanisms may be used to control the Page Printer Set and
coordinate the operation of remote equipment.
Over one hundred Stunt Box arrangements are available as
complete assemblies.
Function Lever Exten-
sion Purpose
A. Used with 155738 Blocking Rod to
prevent operation of eight other function
levers.
B. Will operate contacts in two, adja
cent slots simultaneously.
C. Will operate shift slide OR contact.
D. Will block associated function bar.
higher numbered slot.
F. May be latched in operated position.
G. May operate a slide.
H. Will Suppress Spacing.
1. May be operated by a releasing rod.
J. May operate a releasing rod.
Typical Latch Release Bail -
to release from 2 to 34 152357 Stud -
latches. to release latch
in adjacent, high-
slot
157203 Stud --
to release
latches in adja-
cent, higher and
lower numbered,
slots
n
Standard shift Special 158301 Special 153596 153795 Slide -
forkassemblyus- fork for spring fork for spring Used for operat-
ing 153608 fork loading loading ing shift fork
with one func-
tion lever
FUNCTION PAWLS
152653 - To operate associated
lever only
153598-Special pawl used 153604-To operate associated
in slot adjacent to slot lever plus lever in adjacent,
with 153604 pawl higher numbered, slot
cc r-
en C*
r-
ig IC
N N N
N. CD: C
3
41,
152660 Spring 154613 Latch - 152089 Latch -
Plate - Function Function lever re- Function lever re-
operates for one mains operated mains operated
cycle only until earliest, suc- until released by a
ceeding cycle specific character
153643 Slide - 157164 Slide - 154639 Slide - 155767 Slide -
Spansthe153795 Used for operat- Used for operat- Used for operat-
slide - May be ing shift fork by ing shift fork by ing shift fork by
operated by one one or two, ad- one to four, ad- one to six, adja-
or two function jacent function jacent function cent function
levers levers levers levers
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 0
Approved For Release 2001/07/16 : CIA-RDP78SO5452A0001 0
0009-4
SWITCH ASSEMBLY AVAILABLE CON
S
SLOT MANDATORY
NUMBER POFORON
1 Unshift-On-Space
2 Figures Shift
3 Letters Shift
4 Automatic CR
5 CR
slots for a maximum
of four sets of con-
tacts. A total of 36
positions are avail-
able in this unit for
flexibility. Maximum
recommended con-
tacts-10.
contact current-115 v
LEVER LEVER f -
TRANSFER
22
LEVER LEVERrD
SHIFT FORK POSITIONS
WITH ASSOCIATED CODE
BAR INDICATED
Suppressor Code Bar
Suppressor Code Bar
_ Zero Code Bar
FUNCTIONS NOT
ASSIGNED TO
SPECIFIC SLOTS
Space suppression for
single LF
Signal Bell Contact
Busy Light Contact
Motor Stop Contact
40 LF
41 On-Line Reverse LF
42 Form Feed Out
Suppressor Code Bar
Suppressor Code Bar
Suppressor Code Bar
Suppressor Code Bar
Suppressor Code Bar
Suppressor Code Bar
Suppressor Code Bar
Approved For Release 2001/07/16 : CIA-RDP78SO5452A000100040009-4
 CONSOLES (L rL d For Rase 2001/07/16: CIA-RDP78SO5452AO Vft
The components of the Model 28 Page
Printer Set may be installed in one of
three consoles: The Floor Model, the
Table Model or a special, close-fitting
cover. Power and signal lines are routed
through openings in the rear of the
consoles. In the rack mounted set the
lines are connected to terminals in the
Electrical Service Unit. In the Floor or
Table model the lines are connected
either to RF filters, if used, or directly
to the terminal boards on the rear wall
of the console.
Copy Lamps
Copy Tray
Signal Bell
Power Switch
Margin Indicator Lamp
Terminal Boards
Cradle
Tilting Brackets
Storage Space
Leveling Feet
CONSOLE ACCESSORIES
Directory Holder
Offset Copyholder
Apparatus Mounting Rack
RECEIVING
SHAFT
ROTATION
IF-
RECEIVED
SIGNAL
(7.42 CODE)
Mounted on underside of consoleflooi. Electrically connected to console T Mounted on Electrical Service Unit.
terminal board.
Paper Winder Mounting Bracket
Shock Mounts
Sprocket Feed Paper Guide
Two 6.3VAC lamps operating from a 5.5VAC transformer secondary. Located inside (center) of dome. Three
position switch permits operation: (1) Continuously on (2) When motor is running or (3) Off
Color
Type
Code
Black
Wrinkle
AA
Grey-Green
Wrinkle
AB
Dark Brown
Wrinkle
AD
Federal Grey
Wrinkle
AF
Black, High Gloss
Smooth
BA
Black, Semi Gloss
Smooth
BB
Light Grey
Smooth
BH
Federal Grey
Smooth
BV
asuess panel un
On Electrical Service Unit. Operated by extension arm from front of console. nva"overnuie ....U" gli
c
Two terminal boards mounted on rear wall. Twenty terminals on each.
Extra boards optional.
none
none
Floor of console May mount either the Send-Receive Keyboard or Receive-
only Base.
Sides of console. Permit tilting of Keyboard for Base) and Typing Unit for
Behind lower panel. Panel cover may
also be used as maintenance tray.
Bottom of console.
Cover removable from base plate for
inspection.
none
none
Busy Line Indicator Lamp
Form Out Alarm
Paper Supply and Accumulating Shelf
1200 1800 2400 3000 3600
282?
TRIP SELECTOR CLUTCH
CHARACTERS
PER MINUTE
UNIT CODE
BASIS
BAUDS
RECEIVING
SHAFT RPM
1? ON
CHART=
600
7.42
74.2
685.
.24 MS
460
7.42
56.9
525.6
.32 MS
428
7.00
404
7.42
50.0
461.7
.36 MS
400
7.50
390
7.00
368
7 42
45.5
420.5
.40 MS
TRIP CODE
MBAR CLUTCH
One 6.3VAC lamp. Located inside
420? 480? 540? 600? 660? 720?
0? 60? 12 ? 180? 240? 300? 360?
START I i 2 I 3 I 4
-TRIP SELECTOR CLUTCH (SUBSEQUENT CYCLE)
-TRIP TYPEBOX CLUTCH
PRINT ("Y")
TRIP SPACING CLUTCH
232?
SPACE
(TRIP FUNCTION CLUTCH
HORIZONTAL TAB CONTACT OPERATES
-150?(OPENS TRANSMITTER CONTROL CIRCUIT)
TRIP LINE FEED CLUTCH BEGIN FORM FEED (154'-156')
154? __ - 67? SINGLE LINE FEED
(DOUBLE LINE FEED
158? 1--- --135?---
`FUNCTION BOX CONTACT
OPEN OR CLOSED
( IF NOT LATCHED)
Approved For Release 2001/07/16 : CIA-RDP78SO5452A000100040009-4
 MOTORS (LMUJ _pproved For Release 2001/07/16 : CIA-RDP78SO5452A000100040009-4
MOTORS AVAILABLE
Speed (RPM)
3600 3600
Horsepower
1/20th ] 1/20th
Voltage
115VAG ? 10%
Run Current (AMPS) 1
1.85
Frequency (Cycles/Second)
Power Consumption (Watts)
65
Power Factor
.30
Heat Dissipation (Watts)
50
Rotation
CCW from governor end
Adjustable governor
ELECTRICAL SERVICE UNIT (LESU)
The Electrical Service Unit serves as the
concentration point for the Page Printer
Set's electrical connections. In addition to
the line fuse and convenience receptacle,
the Electrical Service Unit provides termi-
nal boards and mounting facilities for
optional sub-assemblies.
The unit is installed, in the Floor and
Table model consoles, behind the Key-
board or Base. In the Rack Mounted Set,
the Electrical Service Unit occupies a
separate compartment.
a
COMPONENTS AVAILABLE TO MOUNT ON ELECTRICA SERVICE UNIT (LESU)
A. Line Shunt Relay: The signal line is coupled,
through the contacts of this relay, either to
the Line Relay or directly to the typing
unit's selector magnets. When motor power
is removed, the relay de-energizes and
maintains signal line continuity while by-
passing the local unit.
B. Line Relay: Utilized to reduce the effects of
line distortion or to convert a polar signal
to the neutral form required by the typing
unit's selector magnets. The relay has two
windings: One operated by the signal line
and the other by a local DC source. If a
polar signal is applied, only the main wind-
ing is used. In either case, movement of the
armature applies local DC to the selector
magnets in response to a MARKING signal
line condition.
C. Line - Test Key: Permits shunting of the
signal line for independent operation of the
set. The assembly may be wired to draw
either 20MA or 60MA from the local DC
source. An additional set of contacts is in-
cluded that may be utilized to provide
audible or visual indications.
0. Motor Control: To provide simultaneous con-
trol of all motors in a circuit. Two assem-
blies are available:
(a) Electromechanical: Stops motor when
function box contact is closed (Usually
on FIGS-"H"), or when a time delay mech-
anism on the keyboard or base responds
to an idle line condition.
(b) Solenoid: (Can not be used on DC motors
without adequate spark protection).
(1) In separate loop: All motors stop
when Loop is operated (Battery either
applied or removed).
(2) In signal line: All motors stop when
signal line current is reversed.
E. Rectifier: Two rectifier assemblies are avail-
able. One is rated at 120MA, the other at
300MA. Both assemblies provide 120VDC
from an input of 115VAC (? 5 volts), 50 to
60 c/s. The output of the rectifier is nor-
mally utilized in local circuits such as the
typing unit's selector magnets, the Line
Relay's bias winding and the Line Test Key
Assembly. For use within the set, the 120MA
rectifier is usually adequate. The 300MA
assembly is offered for special applications
where supply of external equipment is de-
sired.
F. DC Conversion: A capacitor-resistor assembly
to permit operation of such local components
as the series governed motor or the Line
Test Key Assembly from a direct, DC source.
The assembly would be installed in the posi-
tion normally occupied by the rectifier.
G. Signal Line Limiting Resistance: Either a
fixed or variable resistance to limit the sig-
nal line to the requisite 20MA or 60MA. The
variable resistance (rheostat) would be in-
stalled in the position normally occupied by
the Line Relay.
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 Approved For R le se 2001/07/16 : CIA-RDP78SO5452AQ00100040009-4
INPUT SIGNAL cprrirICATinue 148W
1. Sequential (5 intelligence levels with Start and Stop
pulses)
a. Neutral: Selector magnets may be directly connected
to the signal line.
b. Polar: Line Relay is mandatory.
2. Parallel
a. Neutral: An accessory multi-wire distributor unit
Five Intelligence Levels
One-START-STOP
One-Control (Aux.)
SELECTOR MAGNET SPECIFICATIONS
Connection to Signal i j Recommended
Line or Line Relay Resistance Inductance a current
Series ~ 264 ohms 6 Henrys 30 MA
Parallel 66 ohms 1.5 Henrys 60 MA
a Approximate values - Measured on a DC basis with magnet unattracted
SPEED DATA
Characters Per-Minute
or
Operations Per-Second
Unit Code
Bands (Bits-per-second)
Frequency (Cycles/Second)
Length One Character
in Unit Pulse
Milliseconds !Stop Pulse
600 460
10.0 7.7
7.42 7.42
428 r 404 400 390 T 368
7.1 6.7 6.7 6.5 6.1
7.00 7.42 7.50 7.00 1 7.42
74.2 56.9
37.128.4
100 130
13.5 17.6
19.1 24.9
i 140
20.0
50.0
25.0 22.8
149 1; 8
150 154 163
20.0 20.0 22.0 22.0
28.5 30.0 22.0 31.2
AVAILABLE GEARS
Operations (Characters) Set Number Pinion Gear Driven Gear
Per-Minute i Fiber Nylon Steel Nylon Fiber Nylon
600 151100 161295 151134 159284 1151135 x159285
460 1151075161294 151132 1159281 1151133 159282
404 152766 - 152765 152764 -
368 151060161293 151130 159278 1151131 159279
LINE RELAY
in U3
13211 132n
SELECTOR MAGNETS
SIOn 40pn
GENERAL OFFICES
Teletype Corporation
5555 Touhy Avenue
Skokie, Illinois 60078
PHONE: [phone], Skokie
Direct Distance Dialing
Area Code 312
GOVERNMENT LIAISON OFFICE
Teletype Corporation
425-13th Street, N.W.
Washington, D.C. 20004
PHONE: ME 8-1016
Direct Distance Dialing
Area Code 202
LINE BREAK
SWITCH
CONVENIENCE OUTLET
MAINT.
oOFF
I
= ISOo
TWX: 910-223-3611
(24-hour automatic
answering service)
W.U. Service on premises
TELEX: 02-5451
(LD) converts a parallel wire input
to the sequential form required by
the selector magnets. The dis-
', tributor has seven contacts:
1 .- t 1
LINE TEST
L
6.3 V
COPY
ON
WIRING OF TYPICAL
MODEL 28
PAGE PRINTER SET
r
Approved For Release 2001/07/16 : CIA-RDP78S05452A0001000449A4,N U.S.A.