Elementary lessons in steam machinery and the marine steam engine, with a short description of the construction of a battleship (1893)
Langmaid, Joseph, Gaisford, H · London, New York : Macmillan · leaf 145
hinery,such as cylinders of steam engines, etc., to prevent a dangerousincrease of pressure. They are very similar to safety valves, andtheir action is the same. Cocks are also fitted to machinery to control the admissionor discharge of steam, water, etc. A cock consists of a shell A (Fig. 63),… … Fig. 62.—Pump Valve (Non-return). (Page 123.)
Steam-engines · Marine engines
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