Material handling machine

Claim 1

IN A TRAILER HAVING AN ELEVATABLE BED AND A GROUND ENGAGING SUPPORT ASSEMBLY CONNECTED ONLY TO THE ELEVATABLE BED, LIFT MEANS COMPRISING A PAIR OF TRANSVERSELY SPACED LIFT SUPPORT ASSEMBLIES, EACH SAID LIFT AND SUPPORT ASSEMBLY COMPRISING A FIRST FLUID MOTOR HAVING A CYLINDER AND A PISTON ROD, SAID FIRST FLUID MOTOR BEING PIVOTALLY CONNECTED ADJACENT ONE END OF SAID PISTON ROD TO THE GROUND ENGAGING SUPPORT ASSEMBLY FOR ACTUATION BETWEEN A FORWARDLY INCLINED POSITION AND A SUBSTANTIALLY VERTICAL POSITION, MEANS FOR CONNECTING SAID FIRST FLUID MOTOR ADJACENT ONE END OF SAID CYLINDER TO THE ELEVATABLE BED FOR PIVOTAL AND LONGITUDINAL MOVEMENT RELATIVE THERETO, SAID LAST-MENTIONED MEANS INCLUDING A LONGITUDINALLY EXTENDING CHANNEL MEMBER SECURED TO THE ELEVATABLE BED AND A ROLLER MOUNTED FOR ROTATION ADJACENT SAID ONE CYLINDER END AND ARRANGED TO RUN ALONG SAID CHANNEL MEMBER, A SECOND FLUID MOTOR CONNECTED ADJACENT ONE END OF THE ELEEVATABLE BED AND CONNECTED ADJACENT THE OTHER END THEREOF TO SAID CYLINDER FOR ACTUATING SAID FIRST FLUID MOTOR BETWEEN SAID INCLINED AND VERTICAL POSITIONS, AND A RIGID MEMBER PIVOTALLY CONNECTED TO SAID CYLINDER AND THE ELEVATABLE BED.