On Friday, February 1, 2019 at 1:11:19 AM UTC-5, Cydrome Leader wrote:
It's some sort of press with a heavy wheel that spins back and forth and
presses on the work using a heavy screw.
No audio needed, just watch about 10 seconds
What's the history of these, any is it something uncommon in the US?
That's a "fly press": a flywheel screw press. No, they aren't common in the US. Apparently they've been around for a long time in forge shops in other parts of the world, including Europe.
I never saw one but I remember seeing photos when I was an editor at American Machinist, back in the '70s.