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Manufacturers Index - James Hamilton
Patents
This page contains information on patents issued to this manufacturer.

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USPTO = U.S. Patent Office . Images of the actual patent can be viewed on the U.S. Patent Office web site but a special TIFF viewer must be installed with your browser in order properly work. More information on how to configure your computer to view these patents can be found at TIFF image Viewers for Patent Images.
DATAMP = Directory of American Tool And Machinery Patents . A sister site to VintageMachinery.org with information on patents related to machinery and tools. A much easier user interface than the USPTO's for finding information on machinery patents.

Patent Number Date Title Name City Description
X7,560 Apr. 29, 1833 Making fellies James Hamilton New York, NY This patented design was seen in 2006 in an 8-page catalog on eBay (asking price, $495). The catalog is from 1833 or 1834 and illustrates "Hamilton's sawing and boring machine, and Wiswell's spoke machine". The article quotes a writeup from a committee of the American Institute, which mentions that Hoe & Co. was manufacturing these machines for the New York market, and rights were available for other territories. The Hamilton machine sold for a whopping $350, and requires about 2 horsepower worth of water-power to run.
77 Nov. 10, 1836 Machine for cutting veneers James Hamilton New York, NY James Hamilton was an influential early designer and manufacturer of woodworking machinery. We do not have confirmation that he manufactured this veneer cutting machine, but we assume that he did.
1,652 Jun. 27, 1840 Pit-sawing and slitting machine for sawing logs into lumber and boards James Hamilton New York, NY
1,663 Jun. 27, 1840 Machine for sawing or cutting snags James Hamilton New York, NY Invention is a saw to be mounted on a boat; it can be positioned to cut above or below the water, at any angle. The inventor received a possibly related patent for dredging: 8,840.
2,704 Jul. 02, 1842 Sawmill-gate for curvilinear sawing James Hamilton New York, NY The patent drawing is unavailable.
3,053 Apr. 15, 1843 Machine for curvilinear and compound-bevel sawing James Hamilton New York, NY Sawmill makes curved cuts by rolling the log during while being sawn.
The 30 September 1848 issue of Scientific American carried an article about a British trial, Hamilton versus Cochran. It seems that James Hamilton sued John W. Cochran in Britain regarding patent infringement for this design: both inventors had secured British patents also. Judgement was in favor of Mr. Hamilton. For Cochran's design, see American patent 5,394.
3,342 Nov. 21, 1843 Sawmill for sawing timber with a direct or compound bevel James Hamilton New York, NY This sawmill is designed to produce compound-curved timbers as needed in ship-building.
8,840 Mar. 30, 1852 Dredging-machine James Hamilton New York, NY See also patent 1,663.
8,872 Apr. 13, 1852 Mill for curvilinear sawing James Hamilton New York, NY Improvements to patents granted to the inventor in 1842 (patent 2,704) and 1843. According to M. Powis Bale's book "Woodworking Machinery, Its Rise, Progress and Construction", "In the year 1854 Mr. James Hamilton, of New York, patented an arrangement of vertical saws especially adapted for cutting ships' timbers. A machine, made under this patent, was erected at the shipbuilding yard of Messr. Wigram and Son, Blackwall. The machine ran two saws, which cut both sides at once of any timber ordinarily used in shipbuilding. Each saw was hung in such a manner as to be free to turn on its centres, and present its cutting edge in any required direction; they were also arranged to move laterally in the saw frame. This movement was obtained by stretching each saw in a separate frame, which frame slided sideways within the principal frame. The sawyer controlled the position of both the saws by holding a lever or guide in either hand, and thus manipulated, each saw was made to follow the line on the timber to any desired curve or taper. The bevel of the timber was obtained by causing it to revolve somewhat as it was fed up to the saw, and the exact bevel necessary at every point was thus secured, and the timber left the saw sufficiently true to require little or no trimming."
8,873 Apr. 13, 1852 Machinery for making casks James Hamilton New York, NY
25,113 Aug. 16, 1859 Crosscut-sawing machine James Hamilton New York, NY
43,688 Aug. 02, 1864 Improvement in sawmills James Hamilton New York, NY