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"Open Problems..."       "...Under Construction!"

REMINGTON RAND
PRINTING CALCULATOR
MODEL 99




TECHNICAL DATA       of  the  F u l l - Motorized Electro-Mechanical
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                                        Printing-Calculator    11/12

Model:               REMINGTON RAND MODEL 99

Serial Number:       99N1271417

Dimensions:   (ca.)  Width   =  10_1/2 " /  27 cm
                     Depth   =  17     " /  47 cm
                     Height  =   9_1/4 " /  23 cm

Weight:       (ca.)  35 lbs  /  16 kg

Power Supply:        115 V AC / DC ;  1.5 A

Mechanics:           Serial-to-parallel Conversion,
                     10-Block-Keyboard

                     Black/Red Nylon Ribbon (= Typewriter):
                     1/2" * 20'  /  13 mm * 6 m
                     Paper Roll:
                     3_7/8" * 2_3/4" * 165'  (W * D * L)
                     97 mm  * 65 mm  * 50 m  (B * D * L)

Functions:           Add, Subtract, NonAdd, Repeat,
                     Subtotal, Total,
                     Multiply, Divide

Registers:           Input       =  11 Decimals
                     Arithmetic  =  12 Decimals
                     Printing    =  14 Characters
Manufacturer:
                     REMINGTON RAND
                     NewYork / USA
                     1959


H O W   T O   U S E   IT   ...
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See  http://www.rechnerlexikon.de/artikel/Remington_Calculator_99

H O W   T O   O P E N   T H E   C A S E :
=========================================
(1st) REMOVE THE PRINTING UNIT:
        Shift the PAPER-HOLDERS to the right & left
        Remove the PAPER ROLL
        Remove the 4 ( symmetric placed ) SCREWS
          ( Use tweezers not to lost the screws )
        Unhook its ACTIVATION LEVER ( see picture below !)
          by push down its LOCK-SHEET
        Pull-out the printing unit
(2nd) DO NOT FLIP the machine, because it is resting on springs!
      Place the calculator on table-edge to have access from below:
        Remove the 2 FRONT-SCREWS  b e s i d e  its feet;
        remove the 2 REAR-SCREWS  i n s i d e  its feet
(3rd) Lift & remove the CASE
(4th) MOUNT THE PRINTING UNIT FOR FUNCTION TESTS:
        Set the calculator MANUALLY in "Printing Operation"
          to get access to the ACTIVATION LEVER:
        Turn the LEFT WHEEL on the MOTOR-AXLE clockwise ...
          ( visible in the picture: Observe the "<<" MARK )
        Lift the LOCK-SHEET to bring it through the whole ...
        Connect ACTION-LEVER, PRINT-UNIT-LEVER & LOCK-SHEET

DETAIL of the ACTIVATION LEVER / MOTOR ...

        

T H E   S T A T U S :
=====================
After cleaning & oiling the calculator works "mostly right" in

        ADD, SUBTRACT, NON-ADD, MULTIPLY, SUB-TOTAL, TOTAL

E R R O R S   occur because of "leftovers" in the memory -  DIVISION
is always wrong!  LOOPING has to be stopped with the RELEASE-KEY ...


                     ... BUT there is hope to make it working again!
impressum:
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© C.HAMANN     http://public.beuth-hochschule.de/~hamann    12/13/14