Abstract: A belt tensioning frame assembly includes opposing elongated channel members, connected by elongated plate members at the respective ends thereof. A first roller, mounted at one end of the tensioning frame assembly is positioned above the plane of the tensioning frame assembly, while a second roller is below the plane of the tensioning frame assembly, at the other end of the tensioning frame assembly. The tensioning frame assembly is rotatably mounted to a conveyor frame by bearing assemblies and a cross-support rod. The angular position of the tensioning frame assembly is controlled by two air cylinders which are connected between the conveyor frame and the two channel members of the tensioning frame assembly. The lower run of the conveyor belt extends over one of the rollers and beneath the other such that a change in the angular position of the tensioning frame assembly tends to increase or decrease tension on the belt.

Abstract: The adjustable blade apparatus (10) is adapted for use with an earth moving vehicle (12). It includes a support frame (20) which is pivotable in the vertical plane relative to the vehicle (12). A blade assembly (22) is rotatably secured to a connecting frame portion (54) of the support frame (20) by means of a turntable (26) and a swivel connection (27). The blade assembly (22) is moved relative to connecting frame (54) by hydraulic cylinders (28,30).