Handbook for the use of electricians in the operation and care of electrical machinery and apparatus of the U.S. seacoast defenses (1902)
United States. War Dept, Anderson, George Lucius, 1849-1934 · Washington, Govt. Print. Off. · leaf 45
same lever as the air-inlet valve(fig. 30), performs the double office of suction on the upstroke and of forcing onthe downstroke. The suction as well as the forcing side has two check valvesin series for certainty of action. On the downstroke oil is forced direct to thevalve box. 4. Valve box…
Electric machinery · Searchlights · Coast defenses
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
