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Pete
Pete, Computer Engineer
Category: Computer
Satisfied Customers: 15757
Experience:  CISCO certified, Microsoft proficient, computing expert.
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I have a manual hand crank Olivetti adding machine. When I

Customer Question

I have a manual hand crank Olivetti adding machine. When I add two numbers like 1528 + 1528 it should add up to 3056 but it adds up to 2046 machine is not carrying the one. Is it a spring
I like fixing old manual adding machines but I am stumped on this one. Any suggestions.
Thanks
Submitted: 10 months ago.
Category: Computer
Expert:  Pete replied 10 months ago.

Hi Jeff,

Expert:  Pete replied 10 months ago.

A broken tooth on an internal gear can cause incomplete travel and lead to an incorrect result like you are experiencing.

Expert:  Pete replied 10 months ago.

Carrefully examine all of the internal gears for any sign of missing or worn teeth.

Customer: replied 10 months ago.
Pete,
Did not get a chance to check the adding machine yet. Will tomorrow and will let you know.
Expert:  Pete replied 10 months ago.

Ok, thanks for the update!

Pete.

Expert:  Pete replied 10 months ago.

Hi Jeff,

Just checking how you made out with this?

Pete