OK the planes are back in the air, where did my boss want togo today that right Style mill to watch the takeoffs and landing. So snook off and took a few shots of the mill wheel, I'm afraid they are not too clear the mill wheel is under a 8 story spinning mill and you can't get clear shots of it so this is the best I could do.
This is the broken cast iron mill wheel axle shaft that had to be replaced so it gives you some scale of the thing.

The top of the wheel

The inside of the wheel its a fabricated cast iron structure with spokes.

This is the sluce gates that can be controlled from inside the mill, not sure how they controlled the speed, for spinning I guess a steady speed would be important, the water would flow at a steady rate, but the power demand would change as machines were stopped and started.

The drive went through a couple of huge gear wheel to step up the speed, sorry no pics they were down in the bowels and you could only view them through glass so couldn't get a good shot.
This is the bevel gear the vertical shaft went to the top of the building and provided power for all eight floors driving spinning muels.



Enjoy
Stew