Barbour Calculating Machine Model
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Barbour in 1872. It has a rectangular wooden base with nine grooves in it. The rightmost groove contains a rectangular brass plate with nine rows of teeth in it. The first row has one tooth, the second, two, and so forth. This plate has a metal handle, marked with the digits from 1 to 9, that can be pulled forward to enter a digit. It is a modification of the cylinder in Barbour\u00e2\u0080\u0099s patent 130404 (see MA.309172 ). A complete machine would have nine such plates."}, {"label": "Description", "content": "To the right of the grooved wooden base and its metal plate is another brass plate on which is mounted a mechanism for controlling a slide that is supposed to move over the rectangular plate, carrying out desired arithmetic operations. In this machine, multiplication is carried out by repeated motion of the slide, rather than in a single motion as in Barbour\u00e2\u0080\u0099s earlier invention. Two rotating sets of brass gears, each equipped with a type wheel, are intended to demonstrate how the results of calculations might be printed automatically. The object has no maker\u00e2\u0080\u0099s marks. No successful product emerged directly from Barbour\u00e2\u0080\u0099s patents."}, {"label": "Description", "content": "Compare MA.309172, MA.309173, and MA.318168."}, {"label": "Description", "content": "The Edmund D. Barbour who took out this patent was probably Edmund Dana Barbour (1841\u00e2\u0080\u00931925), a Boston native who reportedly gained a fortune in the China trade before returning to Boston in 1871, not long before taking out this patent. Barbour took our two other patents calculating machines, invested successfully in the Bell Telephone Company, carried out extensive genealogical research, and left most of his fortune in bequests to Harvard University, the Massachusetts Institute of Technology and Radcliffe College."}, {"label": "Description", "content": "References:"}, {"label": "Description", "content": "Edmund D. Barbour, \"Improvement in Calculating Machines,\" U.S. Patent 133188, November 19, 1872."}, {"label": "Description", "content": "J.A.V. Turck, <I>Origin of Modern Calculating Machines</I>, Chicago: Western Society of Engineers, 1921, pp. 180\u00e2\u0080\u0093187."}, {"label": "Description", "content": "\u00e2\u0080\u009cSharon\u00e2\u0080\u0099s Rich Men,\u00e2\u0080\u009d <I>Boston Daily Globe</I>, February 20, 1888, p. 6."}, {"label": "Description", "content": "\u00e2\u0080\u009cFund for Three Local Colleges: Edmund D Barbour\u00e2\u0080\u0099s Will Gives Each $20,000 a Year,\u00e2\u0080\u009d <I>Boston Daily Globe</I>, March 13, 1925."}, {"label": "Description", "content": "J. Gardner Bartlett, \u00e2\u0080\u009cEdmund Dana Barbour,\u00e2\u0080\u009d <I>The New England Historical and Genealogical Register </I>, vol. 79, October 1925, pp. 339\u00e2\u0080\u0093344."}, {"label": "Location", "content": "Currently not on view"}], "name": [{"label": "patentee", "content": "Barbour, Edmund D."}, {"label": "maker", "content": "Barbour, Edmund D."}], "topic": [{"label": "subject", "content": "Mathematics"}], "place": [{"label": "place made", "content": "United States: Massachusetts, Boston"}, {"label": "place patented", "content": "United States: Massachusetts, Boston"}], "physicalDescription": [{"label": "Physical Description", "content": "brass (overall material)"}, {"label": "Physical Description", "content": "wood (overall material)"}, {"label": "Measurements", "content": "overall: 2.5 cm x 41 cm x 9.1 cm; 31/32 in x 16 5/32 in x 3 19/32 in"}], "dataSource": [{"label": "Data Source", "content": "National Museum of American History"}], "objectType": [{"label": "Object Name", "content": "calculating machine"}, {"label": "Object Type", "content": "Patent Model"}]}}, "url": "edanmdm:nmah_690844", "hash": "6e7b333901db9b7e5dd2f707c3a0f3e6ec926749", "docSignature": "0ac191e8711e38f215e5a741cc818f2c", "timestamp": 1663782564, "lastTimeUpdated": 1655973455, "title": "Barbour Calculating Machine Model"}