HAMANN / MERCEDES-EUKLID 38 MS

S N A P - S H O T S  from the PROCESS of RESTORATION
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1 & 1/2 disassembled »38MS« from a former repair shop in Dresden
was the gift of a friend: "Make a working one - Challenge! ..."

... After weeks of work there was success ...

Dissasembling as far as necessary shows:
The counter-error is due to a broken tooth...




November 2005            No Operator's Manual - No Service-Manual available...
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 o  Opened the machine - Cleaned - Repaired input devices & Carriage cover
    Made tools for manual-operation...
 o  Unlocked the [X] key by removing temporary a critical lever -
    Saw that the machine was not adjusted correctly...
 o  Made the appropriate adjustments...
 o  ADD, SUBTRACT, CLEAR works manually & with motor power!
 o  Bent levers - removed rust - oiled - filed...
 o  MULT, DIV works manually & with motor power too...
 o  MEMORY (Write & Read) works too -
 o  Restored case parts with permanent marker and painted symbols...
 o  Restored dials too...

February 2006                                             NEW PROBLEM = fixed
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 o  DIV-ERROR  22/7   =?=   3.0828571
     2 decimals are wrong     ==     10sCarry in COUNTER defect ?
 o  YES! Tooth broken / Replacement part installed...
               22/7    =    3.1428571             Division OK now
 o  2 missing DECIMAL-MARKERS hand-made from brass and aluminum:
      above the keyboard for division (eg.) and
      below the keyboard for multiplication (eg.)

The replacement part was available...



Details of the hand-made decimal markers...

 

November 2006 ...
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 o  DIV 6-8-4  Lever had no effect           ... February 2008 PROBLEM SOLVED

Thanks to observation of a friend's working  Me-Eu-38MS  I got the insight:
The associated levers in the carriage were minimal bent.

Back to the MERCEDES-EUKLID 38 MS Main Page
I am grateful to Prof. Erhard Anthes for his help with valuable informations!

impressum:
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© C.HAMANN         http://public.beuth-hochschule.de/~hamann         02/29/08