Report of the Commissioner of Patents, for the year 1849 (1850)
United States. Patent Office, Ewbank, Thomas, 1792-1870, Lincoln, Abraham, 1809-1865. Improved method of lifting vessels over shoals, United States. Congress (31st, 1st session : 1849-1850). Senate · Washington [D.C.] : Office of Printers to the Senate · leaf 532
er, six more are entered, and the two sets of paddles make their strokesabout eleven feet in each evolution. The cranks of the axis act upon thepaddles about one-third of their length from the lever end, on which part ofthe oar the w^hole force of the axis is applied. Our engine is placed in… … c&^rw <7£ry.^c/i^ THE ORIGINAL STEAM-BOAT SUPPORTED; OR ■ ^ I A REPLY TO MR. JAMES RUMSEYS PAMPHLET: SHEWING TPIE TRUE PRIORITY OF JOHN FITCH, AND THE FALSEDATINGS, &c. OF JAMES RUMSEY. PHILADELPHIA:PRINTED BY ZACHARIAH POULSON, Jun., OS THE WEST SIDE OF FOURTH STREET, BETWEEN MARKET AND…
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