Handbook for the use of electricians in the operation and care of electrical machinery and apparatus of the U. S. seacoast defenses .. (1904)
United States. War Dept · Washington, Govt. print. off. · leaf 27
In fig. 14 the piston (also crank) is at head dead center under full boiler pres-.re, and valve is at lead by definition. jy/^.v.v////zz^^-i … In fig. 15 steam port is full open. Eccentric arm is at crank dead center.
Electric machinery · Searchlights · Coast defenses
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
