Abstract: A drill head having a housing enclosed at its lower end by a lower cover and enclosed at its upper end by a drive cap which carries a drill tool chuck. Radial-thrust bearings are located in the upper portion of the housing. A driven bevel gear is located below the radial-thrust bearings. A hollow passageway through the drill tool, chuck, bearings and driven gear is sealed by a face seal located below the driven gear and mounted in part on the lower cover so as to be easily replaced by removal of the lower cover. A driving bevel gear, on a horizontal axis, is mounted on an adapter on the rear end of the housing, the adapter receiving a hydraulic motor connected to the driving gear.

Abstract: A forklift assembly is pivotally connected to the front end portion of a self-propelled mobile frame. A mounting plate extends transversely across the front end portion of the mobile frame. A hydraulic lift cylinder is bolted to the intermediate portion of the mounting plate closely adjacent to the front axles of the mobile frame, and the piston rod of the lift cylinder is pinned to a lug extending rearwardly from the forklift assembly. Extension and retraction of the piston rod raises and lowers the forklift assembly relative to the mobile frame. The lug is connected to the piston rod to permit movement of the lug on a shoulder portion of the piston rod so that the torsional forces exerted on the forklift assembly are not transferred to the piston rod of the lift cylinder. Guide members are secured to the rear of the forklift assembly and the mounting plate to maintain vertical movement of the lift cylinder relative to the mounting plate.

Abstract: A combination bulldozer blade and materials handling bucket is mounted on the front end of an earth working machine. The bulldozer blade portion of the combination device is generally constructed and arranged to function in a substantially conventional manner. Pivotally mounted about the bulldozer blade and suitably provided with powered actuation means is a scoop having a concave bottom and parallel sides. Powered actuation of the scoop to a retracted position between the blade and the machine sets up the machine in its bulldozing mode. Having used the machine to bulldoze a pile of material into contact with the blade, the scoop is then actuated to its extended position, through the pile of material, thereby depositing the material encompassed by the scoop into an upwardly open bucket formed between the blade and the bottom and sides of the scoop.