[brian_]

From the terminal block, it looks like an old aircraft starter-generator. They were made by several companies to maybe the same spec. I've seen a number of conversions using them, mostly from 20-30 years ago. You'd likely have better luck searching for the Jack & Hines version. There's been a few related discussions on this board. They're pretty rugged.

major

Interesting - I had never heard of these.

By the way, it looks like the company is "Jack & Heintz" (makes searching easier).