Ferguson system or predecessor was on the David Brown tractor for English market a couple years, David Brown didn't pay after first 2 years and Ferguson got US patent based some on previous English patent- then was Ford deal. English market after WW2 had some tractors with 3point while US market patent prevented the use- IHC people can maybe get the years that English IHC tractors had 3 point hitch while US market tractor had to use 2 point to avoid patent infringment- sometime up to late 50s or mid 1960s? Ferguson had a sort of vertical 2 point hitch before 3 point working on Ford based 'Auto Plow' developed from model T car/truck- this was similar in some respects to Brinley Hitch used on garden tractors or a little like AC snap coupler in pull arm on bottom attached under pulling tractor axle line and the upper arm being lifting arm, anti-flip over device. Forest log skidders with a belly atached lift arm are a current use as patent has long expired. Book about Harry Ferguson has a lot of info. RN
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Today's Featured Article - Tractor Hydraulics - The Basics - by Curtis Von Fange. Hydraulics was one of the greatest inventions for helping man compound the work he can do. It’s amazing how a little floor jack can lift tons and tons of weight with just the flick of a handle. What’s even more amazing is that all the principals of hydraulic theory can be wrapped up in such a small package. This same package applies to any hydraulic system from the largest bulldozer to the oldest and smallest tractor. This short series will take a look at the basic layout of a simple hydraul
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