Posted by jdemaris on August 25, 2010 at 18:44:13 from (72.171.0.140):
In Reply to: Re: Live PTO??? posted by paul on August 25, 2010 at 15:52:54:
To be even more "technical", there is no set rule as to the meaning of "live" or "independent" or "continuous" PTO.
If you look through the early patents for dual-clutch and similar PTOs, one being from Henry "Harry" Ferguson, they call many PTO setups "independent", "continuous", etc. Many with dual-clutches in one stack. The patent descriptions claiming it enabled the PTO to work "independent" of the wheel drive in many cases.
Companies that make tractors call things whatever they want, within reason. To many, "live" and "independent" can mean the same thing. You can throw "continuous" into the works also.
E.F. Stumpf patent in March 1942 called it "continuous."
C.E. Gifford patent (for Huber) in June 1942 called it "independent."
Lloyd Andries for Automatic Instrument Co., patent filed June 29, 1944. Dual clutch assembly allows operating two driveshafts "independently from each other with one drive input."
C.A. Hubert patent for International Harvester in Aug, 1959 called it "independent power take-off mechanism."
Henry "Harry" Ferguson and a few other guys, in 1956, filed a patent for a PTO drive totally separated from the engine clutch. Note they did NOT call it "independent." They called it the "continually running power take-off."
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