CONTENTS
IBM
82
CARD
SORTING MACHINE
FUNCTIONAL PRINCIPLES .......................................... 5
Principle of Sorting ................................................ 7
Operating Features ........... ....................................... 8
Switches and
Fuses
......................... ... ............. 8
Card Brush .................. ................... ................ 9
Contact Roll Cover ....... ............ ....................... 9
Commutator ..................................... ................. 9
Declutching Hand Wheel ............... ................ 9
Card Runout .................................. ................ 9
Pocket Stop Device ......................... .............. ... 9
Machine Operation ......................... ............. ... 9
Current, Weight and Dimensions ... ................
10
MECHANICAL
AND
ELECTRICAL PRINCIPLES ........
11
Chute Blades and Sort Magnet ......................... .......
11
Card Brush Assembly ..............................................
13
Commutator ..............................................................
14
Drive Shaft and Motor ............................................ 16
Declutching Hand Wheel........................................
17
Reverse
Lock
.................... ........................................
17
Feed Knives .............................................................. 18
Feed Rolls ................................................................ 19
Card Levers and Contacts ...... ...... ............................
21
Pocket Stop Device ................ ................... ........ .......
21
CIRCUIT DESCRIPTION ................................................
22
Selenium Rectifiers ..........................................
22
Duo Relays ......................................................
22
Glossary of Terms and Abbreviations ..............
23
Time Delay Relay............................................
23
Relay Gate and Electronic Chassis ...........
_......
23
Tube Filaments ................................................
23
DC Machine Circuit ........................................
23
Star~ing
a!ld
~unning
Circuits .. ............... ...............
25
SortIng Circuits ....................... ................................. 26
General Operation ............................................
27
Oscillator and Rectifier Tube ................
...
... ....
27
Static Circuit Conditions ................................
28
Firing the Trigger Tube .................................. 29
Energizing the Sort Magnet .......................... 29
Restoring
Bias
.............. ....................................
31
Miscellaneous Components . ....... ...... ...... ...... ....
31
E,
F,
G
Suffix
Changes ....................................
31
PURPOSE OF RELAYS, CONTACTS AND SWITCHES
32
IBM
80
CARD
SORTING MACHINE
FUNCTIONAL PRINCIPLES ......................................... .
Operating Features ................................................. .
Mechanical and Electrical
Principles ....................... .
CIRCUIT DESCRIPTION ............................................... .
Relay Cabinet .................................
__
.............. .
DC Machine Circuit ..................................... .
Starting and Running Circuits ............................... .
Motor Relay and Card Control Relay ............. .
Drive Motor ................................................... .
Sorti~U~~~~ui~a~.~~!.~~.~
..........
~~~~
......
~
........
~~
..................
~~
..
::::::::::::::
Purpose of Relays and Contacts ........................... .
IBM
75
CARD
SORTING MACHINE
33
33
34
35
35
35
35
35
35
37
37
37
FUNCTIONAL PRINCIPLES .......................................... 39
Operating Features .................................. _...............
40
Switches ....................... _.................................... 40
Counter Reset ............. ....... ..... ......... ......... ... .... 40
Current, Weight, and Dimensions
...
...... ..... .... 40
Mechanical and Electrical Principles ...................... 40
Card Counters
..
............ ............ ......... ........ ... .... 40
Reset Interlock Contact ....... ...... ...... .................
41
Counting Commutators
..
......... ....... ........ ... ....
41
Slate
Base
Relays ............................................
42
CIRCUIT DESCRIPTION ................................................ 45
~elay
~abi!lets
and Power Supply Rectifier .... 45
CountIng Circuits ................................................. ...
45
Card Lever Hold Relay.................................. 45
Counter Magnets and Relays
..
...... .................. 46
Transfer Set
Up Relay.................................... 47
Count Control Relay and Reject Counter ...... 47
Total Counters ................................................ 47
Sorting Circuits ........................................................ 47
Purpose of Relays, Commutators, and Contacts .... 47
SPECIAL
DEVICES
AUXILIARY CARD
COUNTING
DEVICE ..................
50
Circuit Description ..................................................
51
SORT SUPPRESSION DEVICE ......................................
53
Circuit Description ..................................................
53
Sort Suppression Commutator . ....... ................ 54
Energizing the Sort Magnet ...... ........... ...... ..... 54
CARD MATCHING
DEVICE ..........................................
55
Circu?tPg:~~~?Pti~~ยทยท::::::::::::::::::::::::::::::::::::::::::::::::::
~~
Sorting Detail Cards . .......... ....... ................. .....
57
Sorting Master Cards ......................................
58
Purpose of Miscellaneous Circuit Components
51:!
MULTIPLE COLUMN SELECTION DEVICE ................
59
Control Panel' ..................................................
6J
Common Digit Select:on .................................. 60
Multiple Column Selection ..............................
61
Zero-Elimination ............................. _................ 62
Normal Sorting ................................................ 63
Internal Controls ......... ...................... ........ ...............
6.3
Circuit Description .................................................. 64
Normal Sorting and Common Digit Selection 64
Multiple.
Col.umi?'
Select.i~n
.................................... 64
Static
CirCUit
Condltlons ... .......................... ..... 64
Sensing a Selected
Value ................................ 64
Sensing an Unselected
Value .......................... 64
Zero Elimination ....................... .............. .......... ..... 68
Static Circuit Conditions ................................ 68
Operation of
.the
Zero-Eliminate Control Tube 68
Circuit Cutout Relay........................................ 69
GROUP SORTING DEVICE .......................................... 70
Internal Controls . ........... ...... ....... ...... ..... ...... ....... ...
71
Circuit
I?esc~ipti?n
...... :.:.........................................
71
Static
CirCUit
Condltlons ..................................
72
Firing the MCC Tube ....................................
72
Sorting the Master Card ...............................
_.
72
Sorting Detail Cards ..................................... 72
Trailer Card Operation ....................................
75
Single Master Card Operation ........................
75
Purpose of Miscellaneous Circuit Components
75
IBM 978 CARD COUNTING
UNIT
.............................. 76
Functional
Principles .............................................. 76
Introduction . ................ ....... ....... .... ................... 76
Reset .................................................................. 76
Counters ............................................................ 76
Tube and Relay Storage .................................. 76
Circuits ......................................................................
77
Powe~
.
Supply:
..... :........................................... 77
ConditiOning
CirCUits
...... ...... ............... ........... 79
Sort
Only.......
................................................. 79
Count Only...................................................... 79
Sort and Count ..... .................... ..... .................. 82
Purpose of Circuit Components .............................. 82
Wire Contact Relays ............... ......................... 82
Duo Relays ..................................... ................. 82
Cam Contacts ................................................... 84
Switches
.... ...... ....... .......................... ................. 84
Rectifier
. .... ....... ....... .... ........ ...... ...... .......... ....... 84
Resistor ...... ............ ......... ................................. 84