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BURROUGHS  CLASS-1
ADDING / BOOKKEEPING MACHINE



... The Machine can print on a PAPER SHEETS ...
... OR use PAPER ROLLS instead ...



BELL & HAMMER was missing - Now home-made ...

Have a look at the Restoration Procedure

T E C H N I C A L   D A T A    of the Mechanical Calculator    BURROUGHS
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                     CLASS 1   ADDING / BOOKKEEPING MACHINE          7/7

Serial Number:       3-52171

Dimensions:   (ca.)  Width   =  14"  /  36 cm
                     Depth   =  18"  /  46 cm
                     Height  =  13"  /  33 cm

Weight:       (ca.)  66 lb  /  30 kg             ( without Stand )

Mechanics:           9*9 Full-Keyboard
                     Rocking Segment Mechanism  ( with PARALLEL Input !)

Functions            Addition, Subtraction ( as 9-Complement Addition )
  &                  Subtotal ( Register is visible on front ),
Keys:                ERROR, REPEAT, TOTAL ( = Clears Register ) 
                     9 Individual CLEAR-COLUMN Keys on Top

Printing ("blind"):  with Typewriter Carriage, on Paper in fixed Columns
                     or on ( Standard- ) Paper Rolls
                     Cotton Ribbon  1 3/4 " * 12 '

Registers:           Input       =  7 Decimals  ( + 2 ID-Figures, left )
                     Arithmetic  =  7 Decimals  ( = DISPLAY )
Manufacturer:
                     BURROUGHS Adding Machine Co.
                     Detroit, Michigan / USA
                     1911


PRINTOUT - Example             with Comments:
*********************************************

^^^^^^^^^^^^^^^^   To clear memory:
|              |   Press (TOTAL), Pull handle
|              |   Memory is clear!
|              |                         < Max.Input = 7 decimals > 
| 12 34,567.89 |   Enter (1st) ID & NUMBER, Pull handle
| 23 45,678.90 |   Enter (2nd) ID & NUMBER, Pull handle
|              |   Pull handle [ = empty line ]
|    80,246.79 |   Press (TOTAL) to print sum, Pull handle
|              |   Pull handle [ = empty line ]
|              |   Press (TOTAL), Pull handle
|              |   Memory is clear!
|              |
|    70,370.37 |   Enter NUMBER, Set (REPEAT), Pull handle
|    70,370.37 |   Pull handle, Release (REPEAT)
|    70,370.37 |   Pull handle
|              |   Pull handle [ = empty line ]
|    11,111.11 |   Press (TOTAL) to print sum, Pull handle
|              |   Pull handle [ = empty line ]
|              |   Press (TOTAL), Pull handle
|              |   Memory is clear!
|              |
|              |   !!!  A T T E N T I O N  !!!
|              |   8th-Digit LOST  !!!  < Max.Output = 7 decimals >
|              |
^^^^^^^^^^^^^^^^

R E M A R K S :
========================================================================
For SUBTRACTION  9-Complement "Addition" has to be used. For DETAILS see
the  INSTRUCTIONS to the  CLASS 5  CALCULATOR ...

The LENGTH OF THE PAPER SHEET can be pre-set  to activate an "END"-BELL.
To CHANGE (6 fixed) COLUMNS, the carriage has to be flipped & shift into
the new position. There are 3 LINE SPACES available.

         

This impressive  BURROUGHS » CLASS-1 «  has three BEVELED GLASS SIDES to
show with pride its inner mechanics. Mounted on its left side is a flip-
pable METAL DOCUMENT HOLDER.  The machine came with its STAND on wheels.
The stand has a flippable WOODEN DOCUMENT HOLDER on its right side. More
DETAILS ... 
               Inside Views / Snapshots of the Restoration Procedure ...

impressum:
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© C.HAMANN       http://public.beuth-hochschule.de/~hamann      02/13/13