All About Engines
Forfatter: Edward Cressy
År: 1918
Forlag: Cassell and Company, LTD
Sted: London, New York, Toronto and Melbourne
Sider: 352
UDK: 621 1
With a coloured Frontispiece, and 182 halftone Illustrations and Diagrams.
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288 All About
Fig. 161.—Weir feed pump
Engines
engine work is that made
by Messrs. Weir—in fact,
it is also used very ex-
tensively for land instal-
lations. Unfortunately,
it is a very difficult
pump to describe, and
the reader who desires
to understand how the
admission and release of
steam is controlled will
have to follow the ac-
companying diagrams
very closely. The whole
pump, except the steam
chest, is shown in section
in Fig. 161. Fig. 162
shows the ports c, h, and
d by which steam enters
or leaves the cylinder.
Fig. 163 shows a hori-
zontal section, and Fig.
164 a vertical section
through the valves of
which there are two.
Referring to Figs. 163
and 164, A is the main
valve, which is operated
by steam and the pur-
pose of which is to dis-
tribute steam to the