That's cool, never saw one like it before. What do the controls do, and how are they labeled? Seems to me this would have had a lift-off lid like a wringer; is that so, or was it designed to be used with an open tub?
I'm thinking it might be possible to bolt it to a round 1" thick plywood platform to provide enough surface area contact with the ground, that it wouldn't scoot around the floor. Does that seem reasonable or have I just woefully underestimated the forces it generates?
Any updates?