Truck mounted crane

Claim 1

IN A CRANE FOR MOUNTING ON A MOTORIZED VEHICLE OF THE TYPE HAVING A PAIR OF LONGITUDINAL FRAME MEMBERS AND A POWER TAKE-OFF, A BASE ADAPTED TO BE MOUNTED ON THE FRAME MEMBERS, THE BASE EXTENDING TRANSVERSELY OF THE FRAME MEMBERS, THE BASE BEING PROVIDED WITH TOP, BOTTOM AND SIDE WALLS TO PROVIDE AN ENCLOSED RESERVOIR DISPOSED GENERALLY BETWEEN THE FRAME MEMBERS, A PILLAR SUPPORT MOUNTED IN SAID BASE AND EXTENDING THROUGH SAID RESERVOIR, A PIVOT SHAFT ROTATABLY MOUNTED IN SAID SUPPORT AND EXTENDING THERETHROUGH, A PILLAR FIXED TO SAID PIVOT SHAFT, A BOOM ASSEMBLY, MEANS FOR PIVOTALLY MOUNTING THE BOOM ASSEMBLY ON THE PILLAR TO PERMIT SWINGING MOVEMENT ABOUT A HORIZONTAL AXIS, MEANS FOR ROTATING SAID PIVOT SHAFT TO CAUSE ROTATION OF THE PILLAR AND THE BOOM ASSEMBLY CARRIED THEREBY ABOUT A VERTICAL AXIS, AND MEANS FOR RAISING AND LOWERING THE BOOM ASSEMBLY ABOUT THE HORIZONTAL AXIS, SAID LAST NAMED MEANS FOR ROTATING THE PIVOT SHAFT AND SAID MEANS FOR RAISING AND LOWERING THE BOOM ASSEMBLY INCLUDING A HYDRAULIC PUMP CONNECTED TO THE POWER TAKE-OFF, MEANS CONNECTING THE PUMP TO THE RESERVIOR IN THE BASE, AND CONTROL VALVES FOR CONTROLLING THE APPLICATION OF FLUID FROM SAID PUMP TO SAID MEANS FOR ROTATING THE PIVOT SHAFT AND TO SAID MEANS FOR RAISING AND LOWERING THE BOOM ASSEMBLY.