Mechanical drawing. Elementary and advanced (1910)
Reid, John S. (John Simpson), 1856- · New York, J. Wiley & sons; [etc, etc.] · leaf 265
suit the shaft, as shown in Fig. 328. As the holdingpower depends entirely upon the frictional resistance, due tothe pressure of the key on the shaft, the saddle key is only 250 MECHANICAL DRAWING. adapted for securing pieces subjected to a light strain. Whenthis key is used for securing a piece… … Fig. 328. 329 Flat Key.—This form of key, Fig. 329, differs from thesaddle key in that it rests on a flat surface filed upon theshaft. It makes a fairly efficient fastening, but as it drivesby resisting the turning of the shaft under it, there is a tend-ency to burst the keyed-on piece. TABLE 5.…
