Page:Motors and motor-driving (1902).djvu/160

pushed forward until the two shoulders of j¹ and j² come together. Now, when h mounts the third and largest cam, it is depressed to such an extent that the bracket c is moved forward until these two shoulders come in contact, and consequently both cylinders then cut out.

Fig. 18

a, frame carrying the bearings for two-to-one shaft b; b, two-to-one shaft; c, bracket forming portion of hammer h, and carrying connecting rods j and j¹, which operate the diggers k and k¹; d, arm mounted on spindle i; f f, shoulders on arm d, to engage diggers k k; h, hammer; l, l, cams operating exhaust valve; r, r, rollers actuated by cams l, l; j², telescopic rod sliding in j¹ . This allows one cylinder to cut out before the other. Not until the shoulders of j¹and j² come together is the digger k¹ operated on; s, s, joints which allow the arms j and j¹ free up and down movement; i, shaft to which the hammer h and the bracket c are fixed.

There is one other bit of mechanism in connection with the governor which to prevent confusion we do not illustrate, and that is the accelerator. It consists of a lever which presses against the sleeve c c, fig. 17, and so opposes the action of the