Vertically adjustable motor and rotary disk cutter

Claim 1

A SELF-PROPELLED VEHICLE FOR CUTTING VEGETATION COMPRISING A GENERALLY RECTANGULAR MAIN FRAME, GROUNDENGAGING FRONT AND REAR WHEELS SUPPROTING SAID MAIN FRAME, AN AUXILIARY FRAME MOUNTED FOR VERTICAL MOVEMENT ON SAID MAIN FRAME, A POWER PLANT AND TRANSMINSION MOUNTED ON SAID AUXILIARY FRAME, MEANS FOR DRIVING CERTAIN OF SAID WHEELS FROM SAID POWER PLANT, AN OPERATOR''S STATION MOUNTED ON SAID AUXILIARY FRAME, STEERING MEANS LOCATED AT SAID OPERATOR''S STATION AND CONNECTED TO CERTAIN OTHER OF SAID WHEELS FOR GUIDING THE VEHICLE, A HOUSING CONNECTED TO SAID AUXILIARY FRAME, A HORIZONTALLY DISPOSED DISK HAVING A PLURALITY OF CUTTER BALDES ROTATABLY MOUNTED WITHIN SAID HOUSING, A PAIR OF BELL CRANKS PIVOTALLY MOUNTED ON EACH SIDE OF SAID MAIN FRAME, LINK MEANS CONNECTING SAID HOUSING AND EACH OF SAID BELL CRANKS, MEANS CONNECTING SAID BELL CRANKS ON EACH SIDE OF SAID FRAME, A CROSS ROD EXTENDING ACROSS SAID MAIN FRAME AND CONNECTED TO TWO OF SAID BELL CRANKS, A PAIR OF SPACED ARMS FIXED TO SAID CROSS ROD, FLUID MOTOR MEANS CONNECTED AT ONE END TO SAID ARMS AND AT THE OPPOSITE END TO SAID MAIN FRAME, CONTROL MEANS FOR SELECTIVELY OPERATING SAID FLUID MEANS, WHEREBY SAID FLUID MEANS WILL ROTATE SAID CROSS ROD AND SAID BELL CRANKS TO RAISE AND LOWER SAID AUXILIARY FRAME RELATIVE TO SAID MAIN FRAME.