APRIL, 1921 270 … steam driven air pumps lubricated by oil under pressure from motor-driven rotary are also installed. pumps. Should these pumps fail, similar pumps driven by The four propeller motors are of the Westinghouse induc- steam turbines immediately start up automatically, so that no tion type, and each is…
Shipbuilding -- Periodicals · Shipbuilding industry -- Periodicals
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
