Bump cutter with means for reducing effect of bumps

Claim 1

IN A SELF-PROPELLED, VEHICLE-TYPE, PAVEMENT-LEVELING MACHINE, THE COMBINATION OF: (A) A FRAME MEANS HAVING LONGITUDINALLY SPACED FRONT AND REAR ENDS; (B) FRONT WHEEL MEANS CONNECTED TO AND SUPPORTING SAID FRAME MEANS ADJACENT SAID FRONT END THEREOF; (C) REAR WHEEL MEANS CONNECTED TO AND SUPPORTING SAID FRAME MEANS ADJACENT SAID REAR END THEREOF; (D) ROTARY CUTTER MEANS MOUNTED ON SAID FRAME MEANS INTERMEDIATE SAID FRONT WHEEL MEANS AND SAID REAR WHEEL MEANS, AND ROTATABLE ABOUT A HORIZONTAL AXIS EXTENDING TRANSVERSELY OF SAID FRAME MEANS, FOR LEVELING PAVEMENT OVER WHICH THE MACHINE RUNS; (E) MEANS ON SAID FRAME MEANS AND CONNECTED TO SAID ROTARY CUTTER MEANS AND SAID REAR WHEEL MEANS FOR DRIVING SAID ROTARY CUTTER MEANS AND SAID REAR WHEEL MEANS; (F) SAID ROTARY CUTTER MEANS BEING SPACED FORWARDLY FROM SAID REAR WHEEL MEANS A FIRST LONGITUDINAL DISTANCE, AND SAID FRONT WHEEL MEANS BEING SPACED FORWARDLY FROM SAID ROTARY CUTTER MEANS A SECOND LONGITUDINAL DISTANCE WHICH IS LARGE AS COMPARED TO SAID FIRST LONGITUDINAL DISTANCE, SO THAT ANY TENDENCY OF BUMPS ENCOUNTERED BY SAID FRONT WHEEL MEANS TO MOVE SAID ROTARY CUTTER MEANS VERTICALLY IS REDUCED IN PROPORTION TO THE RATIO OF SAID FIRST LONGITUDINAL DISTANCE TO SAID SECOND LONGITUDINAL DISTANCE; (G) SAID FRONT WHEEL MEANS INCLUDING A FRONT WHEEL FRAME HAVING TANDEM FRONT WHEELS ROTATABLY MOUNTED THEREON; AND (H) SAID FRONT WHEEL FRAME BEING PIVOTALLY CONNECTED TO SAID FRAME MEANS FOR PIVOTAL MOVEMENT RELATIVE THERETO ABOUT A TRANSVERSE HORIZONTAL AXIS INTERMEDIATE SAID TANDEM FRONT WHEELS, SO AS TO FURTHER REDUCE ANY TENDENCY OF BUMPS ENCOUNTERED BY SAID FRONT WHEEL MEANS TO MOVE SAID ROTARY CUTTER MEANS VERTICALLY.