Abstract: A vibratory drum soil or asphalt compactor has a variable vibratory mechanism selectively operable to vary the vibrations imparted to the drum from a balanced mode to a maximum amplitude vibratory mode independently of the vibratory mechanism shaft rotation. A shaft having a shaft chamber for accommodating fluid is rotatably mounted on the drum. The shaft is equipped with a cylinder having a cylinder chamber connected with a passage to the shaft chamber. A piston closing the cylinder chamber and slidably mounted on the cylinder supports an eccentric weight. A control piston located with the shaft chamber operated by an external linear actuator is operable to move the piston away from the cylinder thereby move the weight into engagement with the shaft to balance the shaft and allow the weight to move away from the shaft to produce maximum vibration upon rotation of the shaft.

Abstract: A cargo container handling assembly mounted on the lift beam of a mobile vehicle to transport and stack a cargo container. A bridge secured to the lift means accommodates a pair of vertically movable supports. Struts carried by the supports have balls on their upper and lower ends for movably supporting a carrier adapted to be locked onto a cargo container. Fluid operated cylinders are selectively operable to provide the carrier with tilt, skew, lateral shift, and fore and aft movements. Fluid motors are operable to selectively raise and lower the supports to change the elevation of the spreader independent of the lift beam and provide the carrier with pile slope movements.

Abstract: A load handling and transporting vehicle is provided with a load handling apparatus movable from a compact low profile position to an extended position. The load handling apparatus has a main lift beam pivotally connected to a link and control beam. A second link connects the control beam to the frame. Piston and cylinder assemblies connected to the main lift beam and frame operate to move the main lift beam, links, and control beam from adjacent nested positions to extended positions. A cargo container carrier is mounted on a third link pivotally connected to the forward ends of the main lift beam and control beams.

Abstract: A wheel-mounted load lifting and transporting machine having load engaging elements at its front end and a counterweight at its rear end, is distinguished by a novel interacting mobility between the counterweight and the load-engaging elements by which the tilting moments imposed upon the machine by the counterweight and by a load suspended from the load engaging elements, at all times offset one another with the result that throughout changes in the location of the picked up load with respect to the wheel locations, a line that passes vertically through the center of gravity of the loaded machine is substantially equispaced from the points at which the wheels of the machine rest upon the ground. For optimum handling of the machine, each of the wheels on which it is mounted is steerable and power driven to the end that the machine can be moved in any direction and along any defined path.