Patent ID: 6098719
Filing Date: 2000-08-08
Classification: A01B

Abstract:
The combination of a short wheel base tractor having right and left front wheels mounted via an axle unit to a chassis that carries a motor assembly between said wheels and a pair of parallelogram boom devices for mounting agricultural implements to said tractor and adjusting the position of such mounted implements relative to ground during their operation, one of said parallelogram boom devices being mounted inboard of said right wheel and the other of said parallelogram boom devices being mounted inboard of said left wheel, said boom devices each comprising:a parallelogram arrangement of a first upper beam horizontally aligned with a second upper beam along a horizontal axis plus a single lower beam longitudinally aligned with said first and second upper beams, but at a horizontal level therebelow, said parallelogram arrangement being defined by a forward end and a rearward end,mount means adapted to be carried upon said chassis inboard of said wheels comprising a vertical plate,a horizontal top spar and a horizontal bottom spar supported by said mount in a plane parallel to said plate,said forward end of said parallelogram arrangement being supported by said top and bottom spars,hydraulic piston means attached to said parallelogram arrangement to raise and lower it,a frame positioned vertically adjacent said rearward end of said parallelogram arrangement, said frame being supported by said rearward end of said parallelogram arrangement,a lug that extends laterally from said frame carrying an outboard bearing,an implement mounting arm defined by an inboard end and an outboard end, said inboard end being rotationally pinned to said bearing and said outboard end being equipped to support an agricultural implement, andhydraulic piston means attached to said implement mounting arm to raise and lower it.