Abstract: One of the hinges between sections of the distributing chute of a concrete mixer is provided with a stop which prevents abutment of chute section and the corresponding possibility of injury to hands of a workman engaged in unhinging the chute sections. One of the sections also has a cam which restores the abutment to a safety position when the sections are unhinged and folded back into transporting position.

Abstract: A slip-form paver is provided which is capable of paving a lane of concrete or other material in much the same manner that asphalt is spread as a top paving surface for a roadway. Spreading and levelling means are not restricted to the space between the traction members of the tractor portion of the machine, but are arranged behind such members so that the slab may be wider than, or offset, with respect to the distance between such traction members. The mounting of the final paving tool is capable of lateral movement independently of the steering of the tractor members so as to enable it to turn on a different radius. The elevation of this tool may also be controlled from a string line or the like so as to provide the desired pavement surface contour.

Abstract: An attachment to a slipform paver is provided which has side plates and surface plates engaging the sides and top surface respectively of a freshly formed slab of concrete, the slide plates being movable laterally to conform to deviations in the direction of the path of the concrete slab and the surface plate inclining upwardly toward the slab edge to maintain the slab contour during insertion of the dowel bars through the side plate into the side edge of the slab.

Abstract: An off-the-road landfill compactor has large wheels with two piece cutting cleats the inner portion of which are attached to the outer surface of the wheels. The outer, replaceable portion of the cleat is secured to the inner portion by bolts which are directed toward each other but at an incline toward the center of the wheel so that tightening the bolts wedges the outer cleat portion into tighter contact with the inner portion. The bolts engage fastening means retained in recesses provided in the inner portion of the cleat.

Abstract: A hydraulic system for an auxiliary load transfer device pivotally connected to the rear of a truck includes a sequence valve for preventing the build-up of excess fluid pressure in the main hydraulic line between a pump and a hydraulic cylinder that operates the load transfer device. The sequence valve is operable in response to the difference in pressure between the main hydraulic line and control pressure that controls the output pressure of the pump. The sequence valve opens to direct fluid from the main hydraulic line to tank to prevent the rear wheels of the truck from weaving or wandering during travel.

Abstract: An off-the-road vehicle has wheel sets of the same or different forms such as rolls or differentially driven wheels with a hydraulic motor and gear reduction drive for each wheel set. An engine driven variable displacement fluid pump is fed by return lines from the motors, and a fluid control system is provided including a valve associated with each motor and a restricted delivery line from each valve to its associated motor, an unrestricted delivery line from each valve to the other motor, and a restricted line connecting the two motors. Each valve is biased toward a first position by a spring and fluid pressure at the associated motor and has ports connecting the pump and restricted line to the associated motor in a first position, each valve being movable toward a second position by pump output pressure and having parts connecting the pump and the other motor through the unrestricted lines in the second position.

Abstract: A self-propelled refuse or trash compactor is provided at each cleated drum wheel with a fixed cylinder which extends around the axle housing of the compactor to the periphery of the drum wheel. A minimum operating clearance between the cylinder and the periphery of the drum wheel is allowed and is located such that there is no adjacent structure which may guide a discarded length of cable, for example, into said clearance. The fixed cylinder and drum wheel are also related so that the clearance is in the form of a labyrinth and the passage of the cable in any case and other debris in general through the clearance is prevented.