The first shaft-drive PTO used in farm equipment that was indeed for sale to the public was demonstrated in France in 1878. This was a steam-powered live PTO. The IH thing is about mass production and tractors with serial numbers.
In the USA, George Berry invented and sold a combine with a live steam-powered PTO, in 1883.
As to Cockshut and their live PTO tractor in 1945? I'm not sure where that came from, but . . . two guys in Ohio invented the dual-clutch, live PTO for farm tractors in 1940. They described their dual-clutch setup as "independent" and "continuous." At that time, they sold the rights to Huber Mfg. What Huber did with it, I do not know.
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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