Abstract: The invention comprises a self leveling tractor which automatically levels the main frame of the tractor relative to the front and rear axles and wheels of the tractor. The tractor has a pair of axle frames beneath the underside of the main frame at the front and rear portions respectively of the tractor. The axle frames are pivotally mounted to the main frame about a common axis which extends longitudinally from the front to the rear of the tractor along the underside of the main frame. A pair of hydraulic cylinders are positioned on opposite sides of the rear of the tractor, one cylinder is pivotally connected between the main frame on one side of the rear axle frame. The other cylinder is pivotally connected between the main frame and the other side of the rear axle frame. The front and rear axles have wheels at their outer ends. The front and rear axles are fixed to the front and rear axle frames, respectively, to pivot with the axle frames.

Abstract: A crushing implement on rubber tire equipped wheels in which the understructure of the implement can selectively be lifted off the ground hydraulically while resting on the wheels or can be rested on the ground, preferably at three points, while the wheels are lifted off the ground. The implement is equipped with hydraulic pump means for supplying the driving fluid for driving at least some of the wheels and also for supplying actuating fluid to hydraulic cylinder-piston systems for lifting and lowering the understructure, and if desired also to conveyor means for feeding material to be crushed to the crusher rollers of the crushing implement.

Abstract: A vehicle having a material handling unit suspended on the rear end thereof is disclosed herein. The vehicle has a pair of drive wheels adjacent the rear end and a pair of steering wheels supported on an axle that extends transversely of the body at the forward end and is pivotally connected to the body for pivotal movement about a vertical plane. A single shock absorber is interposed between the axle and the body to maintain one steering wheel in ground engaging contact during oscillatory movement of the body about the axis for the drive wheels.

Abstract: The invention disclosed relates to a new improved pivoting axle system especially useful for terrain vehicles.

Abstract: A vehicle includes a cab mounted on a frame capable of vibratory, beam-like bending about at least one nodal point. To minimize the fore and aft motion of the cab caused by the vibratory bending of the frame and by pitching of the vehicle, while reducing vertical motion of the cab, one portion of the cab is resiliently mounted on the frame at or near a nodal point. Preferably, the resilient mount includes at least one pneumatic spring. Another portion of the cab is secured to the frame by a pivotal support that transmits to the cab vibratory movement of the frame at the support.

Abstract: A balance suspension system for three-wheel vehicles wherein such system is applicable in particular to the oppositely-reciprocating related wheels of the vehicle. The system is designed such that the vehicle tends to maintain an essentially horizontal position, relative to its transverse axis, even though wheels may pass over bumps or dips or the vehicle itself may be traversing sloping terrain. Structure is provided such that a vertical movement in one of the oppositely-reciprocating wheels is offset by an opposite movement in the remaining wheel whereby the transverse axis of the vehicle is essentially maintained on a horizontal axis. Such precludes the vehicle from dipping or spilling. Further provision is made so that, as the vehicle is cornering, the transverse orientation of the vehicle dips inwardly, tending to oppose centrifugal force and thereby maintain the integrity of vehicle travel.