BOILERS FOR STATIONARY ENGINES.

39

both the ashes and the soot that may be drawn over by the draught,and which are raked out through a hole, fitted with a movable door,

P

ö

i ^^ ^P\pp\\^ ^k\\\\\\\\\\\\\5o

d d, Boilers .e, Furnace, Flues, andChimney .

F, Steam receiver.

GG, Stop valves.

H, Manhole.

11, Dampers.

k, Safety valve.

l, Float.

m, Feed-pipe.

n, Blow-off tap.

Fig. 19.—Foundations for Cylindrical Boilers. A, End view.

B, Section showing direction of the Flues. C, Longitudinal section.

placed at the bottom of the bridge. The boiler is usually set witha dip towards the back of inch to the foot, so that the sludge