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). House · Washington [D.C.] : Office of Printers to House of Reps. · leaf 532
r, six more are entered, and the two sets ot paddles make their strokesabout eleven fe6t 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 whole force of the axis is applied. Our engine is placed in theboat… … THE • - ORIGINAL STEAM-BOAT SUPPORTED OR A EEPLY TO MR. JAMES RUMSEYS PAMPHLET: SHEWING THE TRUE PRIORITY OF JOHN FITCH, AND THE FALSEDATINGS, &c. OF JAMES RUMSEY.- PHILABELPHIA:PRINTED BY ZACHARIAH POULSON, J¥n., ON THE TVEST SIDE OF FOURTH STREET, BETWEEN MARKET AND ARCH STREETS.…
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