Fig. 2641.
Fig. 2642.
In [Fig. 2640] is shown a wooden pulley having a continuous web or disk instead of arms. It is built up of segments, the web being secured to the shaft as follows. In [Figs. 2641] and [2642] a, b are clamping plates, and c a split sleeve fitting easily to the shaft and passing through a, b, while receiving the nut e on the other side. The web of the pulley fits on the shoulder j, and the flange b fits on the shoulder k, so as to keep these parts true or concentric to a. The bore of a is taper to fit the taper of c; hence the nut e in drawing c through a, causes c to close upon and grip the shaft, while the flanges a, b grip the pulley and hold it to c.
Fig. 2643.