Abstract: A steering gear with pitmans arm, steering tie rod and steering gear connecting rod for a vehicle with optionally hydraulically boosted, mechanical steering or purely hydraulic steering, and a hydraulic pump, driven by the drive engine, being connected via conduits and a flow regulating- and pressure limiting-valve to a directional control valve from which, on the one hand a line extends to a steering mechanism which is actuated from the steering gear via a cardan shaft and from which lines extend to a two-directional control valve which is connected with the hydraulic cylinders of the front axle and, on the other hand a line extends to a steering valve which is actuated by means of the steering gear and the cardan shaft, oil under pressure flowing either through a line to the directional valve connected with the cylinders for the front axle or through a line to the directional valve connected with the rear axle.

Abstract: A steering gear with steering drop arm, steering tie rod and steering gear connecting tie rod for a vehicle, which is drivable on wheels on the road and terrain, with a steering mechanism which is actuated selectively hydraulically supported mechanically or purely hydraulically by means of hydraulic cylinders and electromagnetic valves, whereby changing from the hydraulically supported system to the purely hydraulically operating system is by means of a selective connection of a universal shaft, which is connected with the steering wheel, with one of the two systems which serve the actuation of the steering mechanism. A hydraulic pump, driven by a drive motor, and acting on both systems, is connected with a first control valve via a line, a flow control- and pressure limit- valve and a line. On the one hand a line leads from the first control valve to a steering transmission, the latter being actuated by the steering gear by means of universal shaft.

Abstract: An adjusting device for the main shield of a grader in which two lifting cylinder, a sideways adjusting cylinder and two pivot arms interconnected by an arresting bridge for actuating the main shield are by the arresting bridge linked to a bridge frame of the grader which bridge frame has a rectangular cross section. Each of the two pivot arms are arranged for pivoting about two joints while one of the pivot arms has its free end provided with fulcrums arranged asymmetrically with regard to the vertical axis of symmetry for establishing linkage connection with one lifting cylinder and a sideways adjusting cylinder. The other one of the two pivot arms is at its free ends provided with a fulcrum for establishing linkage connection with the other lifting cylinder.