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Today's acquisition
04-01-2022, 10:43 PM
Post: #1
Today's acquisition
I bought this manual adding machine today for $20.
It displays up to $99.999.99.
The 10 cent column was stuck, so I partially disassembled it, the number wheel for that column was gummed to the shaft. Some cleaning, lube, and a lot of trial and error, it is back together and works the way it should.
Information:
Precise Development Co. Inc.
Made in Chicago, USA
Patent No. 2402549
Other Patents Pending
The knob on the front is the stylus for number input (much like an Addiator)
and the side lever resets the display to zeroes.

(okay, I'm not sure why the photo is not attaching to this post)
   

10B, 10BII, 12C, 14B, 15C, 16C, 17B, 18C, 19BII, 20b, 22, 29C, 35, 38G, 39G, 41CV, 48G, 97
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04-01-2022, 11:40 PM
Post: #2
RE: Today's acquisition
Impressive
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04-02-2022, 03:05 AM
Post: #3
RE: Today's acquisition
Nice find! Those things were amazing technology in their time.

Remember to never plug it in without a good battery pack installed :-)
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04-02-2022, 02:25 PM (This post was last modified: 04-02-2022 02:26 PM by Jlouis.)
Post: #4
RE: Today's acquisition
Congratulations on that finding!

Do you haver an Idea of its manufacturing year?
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