Self-propelled vehicle and mounting for tool or implement

Claim 1

A SELF-PROPELLED VEHICLE OF THE TYPE HAVING A MOUNTING FOR A SNOWBLOWER OR OTHER IMPLEMENT AT ONE END THEREOF WHICH IS SHIFTABLE BETWEEN ELEVATED AND LOWERED POSITIONS COMPRISING: A PRIMARY RIGID FRAME EXTENDING LONGITUDINALLY OF THE VEHICLE AND HAVING LEADING AND TRAILING ENDS; A FIRST WHEEL ASSEMBLY INCLUDING A SUPPORTING AXLE PIVOTALLY MOUNTED ON SAID FRAME ADJACENT THE TRAILING END OF SAID FRAME; A SECOND WHEEL ASSEMBLY INCLUDING A SUPPORTING AXLE MOUNTED ON SAID FRAME ADJACENT THE LEADING END OF SAID FRAME; AN AUXILIARY FRAME PIVOTALLY MOUNTED AT AN INTERMEDIATE PORTION OF SAID PRIMARY FRAME AND PIVOTALLY MOUNTED ON SAID SECOND WHEEL ASSEMBLY AND HAVING AN OUTER END OF SAID AUXILIARY FRAME PROJECTING BEYOND THE LEADING END OF SAID PRIMARY FRAME AND HAVING THE INNER END OVERLAPPING THE INTERMEDIATE PORTION OF SAID PRIMARY FRAME; SAID AUXILIARY FRAME HAVING MEANS THEREON FOR SUPPORTING AN IMPLEMENT SUCH AS A SNOWBLOWER; A PRIME MOVER MOUNTED ON SAID AUXILIARY FRAME AT AN INTERMEDIATE PORTION OF SAID AUXILIARY FRAME BETWEEN THE SECOND WHEEL ASSEMBLY AND THE INNER END OF SAID AUXILIARY FRAME AND SERVING AS A COUNTERBALANCE FOR SAID IMPLEMENT SUCH THAT THE WEIGHT DISTRIBUTION IS ESSENTIALLY OVER THE SECOND WHEEL ASSEMBLY; POWER TRANSMISSION MEANS; MEANS CONNECTING SAID POWER TRANSMISSION MEANS TO SAID PRIME MOVER AND SAID SECOND WHEEL ASSEMBLY TO PROPEL THE VEHICLE; POWER TAKE-OFF MEANS MOUNTED ON SAID PRIME MOVER; MEANS CONNECTING SAID POWER TAKE-OFF MEANS TO SAID IMPLEMENT WHEREBY SAID IMPLEMENT IS ADAPTED TO BE OPERATED WHILE THE VEHICLE IS TRAVELING SUBSTANTIALLY AT ZERO MILES PER HOUR; AND HYDRAULIC OPERATING MEANS INCLUDING A CYLINDER PIVOTALLY MOUNTED ON SAID PRIMARY FRAME AND A PISTON PIVOTALLY MOUNTED TO SAID AUXILIARY FRAME SO THAT WHEN THE PISTON MOVES WITHIN SAID CYLINDER SAID AUXILIARY FRAME IS SHIFTED BETWEEN ELEVATED AND LOWERED POSITIONS.