able architects ad engineers specify the Willett Bruce system, be- for strength, elasticity of teeth and toughness, these gears will cause they know there is no comparison when compared with outwear iron or brass, and are proof against damage from the ancient valve-at-whistle ‘hydraulic’…
Shipbuilding -- Periodicals · Shipbuilding industry -- Periodicals
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
