Water wheel-powered cams - photo and video

Water wheel-powered cams used to drive the bellows of an 18th century steel forge.

https://diqn32j8nouaz.cloudfront.net...wered_cams.jpg

3:09 video:
https://youtu.be/tOS05k1C7zM?t=125


Previously:

https://www.homemadetools.net/forum/...912#post124708

'Water wheel-powered cams - photo and video'

Check out the thumb groves on the hammer handles at 2:43.