This is a Hot Air Fan made by the Al-Cool Fan Company of Chicago in 1917. It turns a 12" blade at 450 RPMs on a tiny alcohol burner. It runs great. I spent 2 weeks making detail drawings hand drawn in the drafting table of each part. PLANS are for sale on ebay $15 + $4 postage.

This is a Hot Air Fan Cool Fan-made by the Company in Chicago in 1917. There is a 12 "blade is 450 RPM on an alcohol lamp, very small. It's going very well. I spent two weeks of detailed drawings of hands in the character table of the individual parts designed. Plans for the $ 15 sale on ebay + $ 4 shipping.