Abstract: An assembly for mounting an accessory to the chassis of a vehicle includes an accessory mounting frame which includes a first base plate and a second base plate, and a pair of clamping mechanisms for mounting the base plates of the mounting frame to the horizontal portions of a pair of longitudinal frame components of the chassis. In a preferred embodiment of the invention, each clamping mechanism includes an elongated clamp block having a first end and a second end, and a fastener that is adapted to fasten the clamp block to the base plate. The first end of each clamp block is adapted to engage a surface of the horizontal portion of a longitudinal frame component, while the second end is adapted to engage the base plate while the base plate also engages a surface of the horizontal portion of the longitudinal frame component that is not engaged by the first end of the clamp block.

Abstract: A lightweight, stable, maneuverable tractor trailer having a frame with a front end, a rear end and two side rails. The rear end of the frame is about twice the width of the front end and the side rails each lie in a vertical plane that is disposed at an acute angle relative to the central longitudinal axis of the frame. Single tire mount wheel and axle subassemblies are mounted to the frame. These subassemblies reduce the tare weight of the tractor trailer and additionally permit the wider frame to be utilized.

Abstract: The hydraulic valve which controls the hydraulic cylinders in a dump body mechanism has its control member coupled by a cable to the dump body to automatically shift the valve from its "raise" to its "neutral" condition when the dump body reaches its uppermost position when being raised. Two lever arms are pivotally attached to the valve body adjacent to each other, the first lever arm being coupled to the valve control member and to a manual control lever, and the second lever being coupled to the dump body cable. A first abutment is attached to the second lever in position to engage the first lever to move it from its "raise" to its "neutral" position in response to movement of the second lever caused by a pull on the dump body cable.