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The only known existing & working C.HAMANN2
MANUS » MODEL - D «
T E C H N I C A L D A T A of the Mechanical Calculator H A M A N N
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MANUS » MODEL-D «
Serial Numbers: 8400 / 6229
Dimensions: (ca.) Width = 10 1/4" / 26 cm
Depth = 6 " / 15 cm
Height = 6 1/4" / 16 cm
Weight: (ca.) 13 lbs / 6 kg
Mechanics: Switching-Latch-Wheel / Schalt-Klinke
Functions: Add, Subtract, Multiply, Divide
Division-Automatic!
Registers: Input = 9 Decimals
Counter = 8 Decimals
Arithmetic = 13 Decimals
Manufacturer:
DTW ==>> DeTeWe
Deutsche Telephon Werke AG
Berlin / Germany
1930/35
Assembler:
C.Hamann
T F H
Berlin / Germany
2008
R E M A R K S : PROOF TO BE RIGHT ???
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The actual "WINDOW" of known »MODEL-D« SNs is ( Oct.2009 ) 8197 .. 8231
With my Model »E« I have narrowed the range of SNs left for »MODEL-D«.
The collector community is chasing »MODEL-D« but, it could be a mirage.
Only one picture in http://www.rechenmaschinen-illustrated.com exist,
without naming the source. JUST FOR FUN I have combined the carriage of
my »C« with the body of my »E« to create a »D« - In fact, there
are only minor changes necessary to make the »MODEL-D« working ...
(1) A HOLE in the »E«-Base 102 mm x 59 mm from the right front corner
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to allow CLEARING the arithmetic unit in the left-most position of
the carriage ( The HOLE allows a PIN to come down ) - AND ...
(2) a HOOK (of brass) mounted on the »C«-Carriage to hold the SPRING.
And the RESULT: A G E N U I N E » C . H A M A N N 2 MANUS MODEL-D «
Demonstration: 2. BERLIN-BRANDENBURGER SAMMLER-TREFFEN (BBST) in Berlin
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© C.HAMANN www.tfh-berlin.de/~hamann 