Vintage Windmill and Wind Generator Forum

It is unique. Found on the Marketplace, so these are Marketplace photos.

Looks to be based upon a Dempster gearbox, possibly an Aermotor hub but with 8 wheel arms, and a Hummer wheel? Those are my guesses…

It's a Rube Goldberg design alright. Two blades per section, is that what makes it a Hummer wheel?

I think the metal Hummers were 4 blades per section with the straight band. Guessing the blade sections were then cut in half to allow for the two blade section we see.