The Automatic Wheel-boxing Afaeltine shown in Fig. 7 is for boring and finishing the hole in a wagon hub for receiving the boxes, doing this at one cut to any regular or irregular shape, relieving the center of the hub around the spokes, and cupping both ends of the hub to any desired shape. All these operations are done at one starting and stopping. There is a universal chuck fastened to a 6-in. spindle, all three of the dogs of which are ac tuated at once by turning with a wrench any one of the three screw threads, the range being for wheels from 20 to 60 in. diameter. There is a boring bar, having lengthwise and crosswise adjustment, for boring holes of any taper, size, or contour de sired ; and it has auxiliary cutter heads to " depth " the backs of the hubs to accommodate the axle shoul der. After completing the cut the feed is disengaged automatically. The boring cutter consists of three independent cutters of square tool steel.
A Pou•er Wheel Pres:: is shown in Fig. S. for pressing axle boxes into wheel hubs and pressing bands and flanges thereon ; taking the place of the hydraulic presses often used for the same purpose. The screw has
an up-and-clown movement of 24 in., and the machine will take in a 60-in, wheel, upon which it will exert a pressure of 60,000 lbs. The direction of motion of the screw is regulated by the position of the hand lever which operates the friction clutch.
A hydrostatic power wheel press made by the Bente] & Marg,edant Co. has a vertical col umn, containing the cylinder, and supplied with crude petroleum under pressure from two vertical pumps, operated by eccentrics upon a shaft driven by a sprocket chain. A lever in front of the machine permits the oil to flow from a pressure reservoir to the rim cylinder, and the same lever releases the pressure and permits the oil to flow back to the suction side of the pumps. A pop valve permits escape of the liquid when the pressure in the ram reaches SO tons. The ram rises in. for every rotation of the pump-driving eccentric haft.