Improvements in and connected with the Rims of Cycle Wheels

4450. Z³hlke, J. Feb. 18. Making wheels for vehicles.- In making rims for the wheels of road vehicles, a cylinder is rolled of the diameter and thickness required. Grooves are spun in it and it is then cut up into rims. Figs. 2 and 3 show, respectively, a plan and cross-section of the machine employed. A cylinder c is mounted on a plate d, made in sections, and is then passed over a grooved mandrel a, of smaller diameter, carried by a spindle b driven in any ordinary manner. A plate d , carried by a longitudinallymovable spindle b , is now pressed against the plate d and mandrel. The shaft b is out of line with the spindle b so that the cylinder is in contact with the mandrel at one side only. By means of a roller e carried by a slide - rest, the cylinder is spun into the grooves in the mandrel and afterwards cut up by revolving cutters s substituted for, or placed alongside, the roller e. If desired, the cylinder can be cut into rims first and each grooved separately. In making hollow rims, a cylinder is deeply grooved, as shown in Fig. 7, and then a second cylinder is placed over it and shallow grooves spun in it. The two are then cut into lengths, and the rims and outer members united by bending the edges of one round those of the other.