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 - Threshin Demonstration - by Michael Delaney. Introduction I bring you greetings from Prince Edward Island, Canada. We are Canada�s smallest province but big on farming. Maybe you�ve heard of us. Potatoes are our biggest crop. However, there is lots of mixed farming here also. I have a small mixed farm with 25-30 cattle. I make very good use of old machinery. I have a 135 MF Diesel, Farmall H and 1/3 share in an Allis B. I have complete lines of tillage and harvest equipment, and a saw gear etc. I have everything one would
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