Vintage Windmill and Wind Generator Forum

I recently joined this group so if I am not following proper protocols let me know.
I recently purchased my father’s farm and was trying to identify his old windmill. I was unable to find any markings other than these attached in the pictures. Anyone familiar with these markings I would appreciate any information on what windmill manufacturer would have used them. Hard to read but markings are OK90 and OK11. They were located on the main arm area. Sorry for my lack of information/knowledge.

Steve , welcome , if you post a photo of the complete motor , helmet , tail , fan , it will be easily identifyable , thanks . tower also .

Thank you. I will post more photos soon to help with the identification.

Challenge Co made an OK mill. Don't know if thats relatable, but yes, more pictures would help.

I think it was Challenge...Yes, I am questioning myself.

Windy , the mind is a terrable thing to waste !

Looks similar to my Flint and Walling just different letters ahead of the numbers. Maybe indicating a different size mill.

The Flint & Walling 8’ Steel Star direct stroke has those OK part #s.

I think you might have a F and W model 13. More pics will help!!

I’m still leaning towards a F&W 8’ Steel Star direct stroke as the “crank wheel” is OK90 and the “lower guide” is OK11. If the main casting is OK1, I’d be convinced based upon a parts list, but additional photos would be helpful.

10’ parts prefix = AK
12’ = BK
14’ = C
16’ = D