i am so happy to see that you have that thing. i live in shelton, connecticut. there is a dam constructed in the 1870's for water power, making canal street the industrial capitol of the world. now, the space is being repurposed to residential. demolition of the factories is a result. during this some old turbines were discovered under the floor. i offered $1000.00 for one of these, but did not get it. this factory was a wire mill that made the wire for new haven telephone, which was the first telephone system in the world. sadly, this town is full of history, what it lacks is people who care. good luck, if i can be of help,, let it be known.
Leffel is still in business and still supports their old products, although I don't know if they support licensed versions. The spiral gates around the perimeter are called wicket gates. Do you plan on restoring it to running condition?
I've heard good things about old school wooden bearings in turbines like that. If you can save those ones I suggest that you do. Apparently that type of wood is super expensive if you want to replace like for like
"UNIFIED" is a ww2 standard threadform... And WHITWORTH threads won't have given up as easily as that.... Likely to be US/Canada NATIONAL thread... Good video ☹️🇬🇧