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ALLEN MODEL 66
T E C H N I C A L D A T A of the Mechanical Printing - Calculator
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ALLEN MODEL 66 6/6
Serial Number: 881439
Dimensions: (ca.) Width = 10" / 25 cm
Depth = 15" / 38 cm
Height = 10" / 25 cm
Weight: (ca.) 20 lbs / 9 kg
Mechanics: 6*9 Full-Keyboard
ROCKING-SEGMENT
Black/RED Nylon Ribbon:
1/2" * 16' / 13 mm * 5 m
( Spool-Diameter = 1_3/4" / 44 mm )
Paper Roll (Standard):
2_1/4" * 2_3/4" * 165' (W * D * L)
57 mm * 65 mm * 50 m (B * D * L)
Functions: Addition, Subtraction ( as 9-Complement Addition )
Repeat, Subtotal, Total
Registers: Input = 6 Decimals
Arithmetic = 6 Decimals ( = DISPLAY )
Printing = 7 Characters
Manufacturer:
ALLEN CALULATORS, INC.
New York / USA
1950
HOW TO USE the ALLEN MODEL 66
*****************************
ADDITION:
---------
Everytime a number is entered and the handle is pulled, the number
is added to the memory ( = DISPLAYED as SubTotal ), printed, and
the keyboard get cleared.
RESET KEYBOARD:
---------------
If a wrong figure is entered in a column, repeat with the right
figure. To clear the keyboard: Press the right red (COR) key.
REPEAT:
-------
To enter the same number more than once, press & push the right red
(RP'T) key before pulling the handle. The keyboard will not be cleared
after releasing the handle. To release the (RP'T) key: Press & pull.
Subtraction:
------------
Only ADDITION is performed. For SUBTRACTION 9-Complement "Addition" has
to be used. ( For DETAILS see the INSTRUCTIONS to the BURROUGHS ... )
SUBTOTAL:
---------
The black key (SUB/TOTAL) IS LOCKED - Before using (SUB/TOTAL) the
handle has to be pulled to make a LINE FEED on paper.
The cumulated sum will be printed ( in RED ) when (SUB/TOTAL) is
pressed & the handle is pulled. The memory will hold the actual
sum after releasing the handle - and it is shown in the display.
TOTAL:
------
The black key (TOTAL) IS LOCKED - Before using (TOTAL) the handle
has to be pulled to make a LINE FEED on paper.
The total sum will be printed ( in RED ) when (TOTAL) is pressed
& the handle is pulled. The memory will be cleared after
releasing the handle - and also the display shows ZERO.
PRINTOUT - Example with Comments:
*********************************
^^^^^^^^^^^^^ To clear memory:
| T | Pull handle, Press (TOTAL), Pull handle
| | (= Paper feed)
| | < Max.Input = 6 decimals >
| 123456 | Enter (1st) number, Pull handle
| 234567 | Enter (2nd) number, Pull handle
| | Pull handle (= Paper feed)
| 358023 S | Press (SUB/TOTAL) to print sum, Pull handle
| 456 | Press (RP'T), Enter number, Pull handle
| 456 | Release (RP'T), Pull handle
| | Pull handle (= Paper feed)
| 358935 T | Press (TOTAL) to print total sum, Pull handle
| | Pull handle, Press (TOTAL), Pull handle
| T | Memory is clear
| | < Max.Output = 6 decimals >
| 999999 | CAUTION: Largest number entered, Pull handle
| 1 | Add 1
| | OVERFLOW WITHOUT WARNING !!!
| T | Memory is clear
| |
^^^^^^^^^^^^^
Have a look at "Calculating Trickies" ...
Have a Look at the WORKSCHOP (B): ALLEN-WALES
REMARKS TO RESTORATION:
=======================
"How to open the calculator" see WORKSHOP (C): ALLEN-95
The calculator came dirty & locked. After intense cleaning, WD-40 (1st) &
(2nd) Silicon Oil application, benting levers, ... it worked again - BUT:
The rubber knob ...
|
of the PAPER TRANSPORT was detoriated and could be replaced by a black
PLASTIC CAP. Half of the BLACK KEYS were detoriated also - But lucky I'm
the "Spare Part - ALLEN-95" could be used as a donator for replacements.
There was a "3" missing, but an "8"-Knob was used and half blackened.
The red/black ribbon ... 
is a "Standard" one, but it had to be respooled on the ALLEN-SPOOLS.