ained
there by the end rings, which form nuts screwed on to the spindle. The
whole of this spindle with its rings rotate together in bearings, shown
in enlarged section, Fig. 3. Steam entering at the pipe, O, flows all
round the spindle and passes along right and left, first through the
guide blades, R, by which it is thrown on to the moving blades, S, then
back on to the next guide blades, and so on through the whole series on
each hand, and escapes by the passages, P, at each end of the cylinder
connected to the exhaust pipe at the back of cylinder. The bearings,
Fig. 3, consist of a brass bush, on which is threaded an arrangement of
washers, each successive washer alternately fitting to the bush and the
block, while being alternately 1/32 smaller than the block outside and
1/32 larger than the bush in the hole. One broad washer at the end holds
the bearings central. These washers are pressed together by a spiral
spring, N, and nut, and, by friction against each other, steady or damp
any vibration in the spindle that may be set up by want of balance or
other cause at the high rate of speed that is necessary for economical
working.

The bearings are oiled by a small screw propeller, I, attached to the
shaft. The oil in the drain pipes, D and F, and the oil tank, D, lies at
a lower level than the screw, but the suction of the fan, K, raises it
up into the stand pipe, H, over and around the screw, which gripes it
and circulates it along the pipes to the bearings. The course of the oil
is as follows: The oil is forced by the propeller, I, and oils the
bearing, A. The greater part passes along the pipe, E, to the end
bearing, C; some after oiling the bearing, C, drains back by the pipe,
F, to the reservoir, D; the remaining oil passes along through the
armature spindle, oils the bearings, B, and drains into the reservoir,
D, from which the oil is again drawn along the pipe, G, into the stand
pipe, H, by the suction of the fan, K. The suction of the fan is also
connected to the diaphragm, L, and forms, with it and the spring, M, the
principal part of the governor which actuates the throttle valve, V.
Fig. 4 is the electrical control governor, which will be further
described in connection with the dynamo. It acts directly upon the
controlling diaphragm, L, by admitting or closing a large access of air
to it, and thus exercises a controlling influence upon it.

The dynamo which forms the other portion of the electric generat