Fig. 1 shows the machine in position on a stock of a wheel ready to force the axle box back. The top corners are made with knuckle joints, so as to allow of side play to take various sizes of stocks, the top boss-piece being made as Fig. 2, having good stout rivets through the joints. For ordinary work the sides should be made of iron, l in. wide by iin. thick, with a good broad duck foot at the bottom. The top cross-piece is made with a boss large enough to take a 1-in. screw; this has a collar and square on the top end to take the handle shown in Fig. 3, the bottom end being turned down to 5/16 in. so as to form a shoulder for the circular bolster to rest upon. In use, the cramp is put on the wheel as shown in Fig. 1; the bolster, which is a trifle smaller than the outside of the box, is put on the end of the screw, and pressure applied by turning the screw down until the box, indicated by the dotted lines, is removed.

Machine for Withdrawing Axle Boxes from Wheels.