"Sam Goldwasser" wrote in message
...

With a mechanical calcuating machine, especially one as complex as those,
it's quite likely that the first step is a good cleaning. You're talking
about 50 year old oil, grease, dirt, grime, and gunk.

I have one like that I haven't tried in years that sort of worked. I had
another one that was locked up and I sold to someone who was going to
restore it but I never learned of the outcome.

I'd probably start with toothbrushes and kerosene, then move on to
lubrication.
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