Abstract: The invention is primarily for use with earth-moving machinery, e.g., crawler tractors and the like. Machines are used in ways such that their operators like to be able have the engine "idle" at lower speed and manually accelerate it or at higher speed and manually decelerate it. The invention is an improvement in an engine throttle linkage of the type having a throttle rod and a pivot-mounted shaft for moving the rod in either of two directions for engine acceleration and deceleration, respectively. A pedal is depressed for pivoting the shaft and, consequently, moving the rod. The improvement is a motion-reversing mechanism with a lever-like member connected to the shaft and having first and second attachment points. An operator's pedal is coupled to one of the two attachment points by a linking stem. Pedal depression pivots the shaft in one direction or the other. Depressing the pedal accelerates or decelerates the engine, depending upon which attachment point is used.

Abstract: A coupling device is disclosed for attaching an implement such as a backhoe to a tractor or other prime mover. The coupling device includes a pair of implement support assemblies connected together by a transverse cross bar for mounting an implement support frame. Each implement support assembly includes a frame bracket or weldment having an attachment pin receiving recess or hook at its lower end for holding a transverse attachment pin which is secured to the lower implement support frame. Yoke assemblies are pivotally attached between the implement support frame and each implement support assembly for the purpose of tightly securing the implement attachment pins against the frame bracket recesses, thereby eliminating any tolerance movement at the attachment points between the implement and prime mover.