Posted by low budget on October 10, 2012 at 18:59:49 from (74.46.14.109):
In Reply to: Re: Tractor Firsts posted by Jack a on October 10, 2012 at 04:50:32:
Jack a, I have no problem being corrected but the original poster asked about tractor firsts. Many things such as turbos were used in construction and military equipment long before they made it to farm tractors. I was wrong about Deere having the first 4wd articulated row crop, I had forgotten the Olivers were actualy a couple of years older. I was aware of the Massey Harris of the 30s but it was not articulated or even considered successful for that matter. Someone else mentioned the Allis WD having closed center hyd, I knew they were unusual in being high pressure and low volume but I thought they were an open center pump with an unload valve. We had an early D17 with the same system. Ours had an auxilary valve to run an ordinary 2 way cylinder. It plugged into the one way cylinder coupler on the rockshaft. You had to have the lift lever locked in the raise position to feed it pressure. I would describe as barely adequate. By the way, on the subject of firsts, wasnt Allis the first to go belly up in the 80s farm slump? Just razzing you. :>)
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