Hydraulically operated land contouring machine

Claim 1

IN A LAND CONTOURING MACHINE, THE COMBINATION OF A FRAME HAVING A SWIVEL CONNECTOR MEANS AT ONE END THEREOF AND POSITIONED IN THE LONGITUDINAL MEDIAL AXIS OF THE FRAME TO ESTABLISH A DRAFT ENGAGEMENT WITH A TRACTOR OR THE LIKE AND PERMITTING HORIZONTAL PIVOTAL MOVEMENT OF SAID FRAME, A HINGEDLY CONNECTED GROUND ENGAGING WHEEL MOUNTED AT RESPECTIVE SIDES OF SAID FRAME AT THE END OPPOSITE SAID SWIVEL CONNECTOR MEANS PROVIDING PIVOTAL MOVEMENT OF SAID FRAME, SAID MEANS INCLUDING CYLINDERS FOR STABLIZING THE HINGEDLY CONNECTED GROUND ENGAGING WHEELS, OPPOSED ALIGNED BEARING MEANS MOUNTED ON SAID FRAME, A SPRACER BUCKET POSITIONED WITHIN SAID FRAME AND HAVING AN AXLE MEMBER JOURNALLED IN EACH BEARING MEMBER, A GEAR FIXED TO EACH AXLE, A RACK BAR IN MESHED ENGAGEMENT WITH EACH GEAR, A HYDRAULIC UNIT OPERATIVELY CONNECTED TO EACH RACK BAR AND A CONTROL MEANS CONNECTED TO SAID HYDRAULIC UNITS FOR ACTUATING SAID RACK BARS.