en at its bottom, of a suction apparatus having a pipe extending into and Claim 1.—A shallow-draft submarine boat, comprising an inner hull toward the bottom of said chamber, a casing forming the intake of the of sufficient strength to resist the pressure incident to submergence, and having a… … British patents compiled by G. F. Redfern & Company, thus formed providing water-ballast compartments, propeller shafts jour- naled in the after end of said main hull having propeller wheels on their chartered patent agents and engineers, 15 South street, Fins- outer ends, motors having their…
Shipbuilding -- Periodicals · Shipbuilding industry -- Periodicals
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten02unit-38-14.webp)
