Found on Google, of course, while looking for something completely unrelated. I knew there was something familiar about the shape and design of this thing. As advertised in an 1881 edition of Scientific American. I guess when your basic design is sound, you don't have to make a lot of changes over a 130 years. I could imagine this thing attached to a silo for grain drying. Got to be bigger than a 14-71 wouldn't you think? Wait till the nitro guys get their hands on one of these! http://books.google.com/books?id=YIE9AQAAIAAJ&dq=editions:GqMTP1IW8xkC&pg=PA189#v=onepage&q&f=false And who knew that the Root's blower had it's origins in Connersville, Indiana?
......And variations of Roots type blowers have been and continue to be used for many industrial applications including blowing loose-fill type insulation into attics.
The design actually dates back to the 1850s. And of course the Roots brothers have a Facebook page with a bit of the history of the company. http://www.facebook.com/pages/Roots-Blower-Company/286882968058716 Seems that it was originally designed as a more efficient waterwheel with water input thru the rotors and power output thru the pulleys. The fact that it was made of wood kind of doomed its success in this configuration.
I am friends with the guy with the camaro in the video above. It is a fast car. Well when it dont have the giant blower on it. And they know alot about blown , and turbo cars. They just did that playing around. Also I was there when the camaro went on its side. I couldn belive they just set it down like that. I thought for shure it would get to a certain point and everyones back would blow out. But Nope. Wrong again.