Fig. 2620.
[Fig. 2620] represents a coupling composed of a cylindrical sleeve split longitudinally on one side, as at d; the bolts c pass through the split. Diametrally opposite is another split passing partly through as at b. A key is employed at right angles to the two splits as shown. Here, again, the pressure on a shaft that is smaller than the other, of the two shafts coupled, will be mainly at one end, but separation of the shaft ends is provided against by means of two cylindrical pins on the ends of the key fitting into corresponding holes drilled in the shaft, as shown in the side elevation in the figure.
Fig. 2621.
Fig. 2622.