Brown, Joseph Rogers

born Jan. 26, 1810, Warren, R.I., U.S.
died July 23, 1876, Isles of Shoals, N.H.

U.S. inventor and manufacturer.

He perfected and produced a highly accurate linear dividing engine in 1850, and then developed a vernier caliper and also applied vernier methods to the protractor. With Lucian Sharpe he founded the Brown and Sharpe Manufacturing Co. His micrometre caliper appeared in 1867. He invented a precision gear cutter to produce clock gears, a universal milling machine, and (perhaps his finest innovation) a universal grinding machine, in which articles were hardened first and then ground, thereby increasing accuracy and eliminating waste.

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▪ American inventor
born Jan. 26, 1810, Warren, R.I., U.S.
died July 23, 1876, Isles of Shoals, N.H.

      American inventor and manufacturer who made numerous advances in the field of fine measurement and machine-tool (machine tool) production.

      After training as a machinist, Brown joined his father in a successful clock-making business, which he operated himself from 1841 to 1853. He perfected and produced a highly accurate linear dividing engine in 1850, and in the succeeding two years he developed a vernier caliper reading to thousandths of an inch and also applied vernier methods to the protractor. In 1853 Brown took Lucian Sharpe into partnership; the firm later became the Brown and Sharpe Manufacturing Company. Brown's micrometer caliper, widely used in industry, appeared in 1867. He also invented a precision gear cutter in 1855 to produce clock gears, a universal milling machine in 1862, and, perhaps his finest innovation, a universal grinding machine (patented in 1877), in which articles were hardened first and then ground, thereby increasing accuracy and eliminating waste.

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Universalium. 2010.

Look at other dictionaries:

  • Brown, Joseph Rogers — SUBJECT AREA: Mechanical, pneumatic and hydraulic engineering [br] b. 26 January 1810 Warren, Rhode Island, USA d. 23 July 1876 Isles of Shoals, New Hampshire, USA [br] American machine tool builder and co founder of Brown & Sharpe. [br] Joseph… …   Biographical history of technology

  • Brown, Joseph Rogers — (26 ene. 1810, Warren, R.I., EE.UU.–23 jul. 1876, islas de Shoals, N.H.). Inventor y fabricante estadounidense. Perfeccionó y produjo una máquina de graduación lineal muy precisa en 1850, y luego desarrolló un calibrador nonio, aplicando… …   Enciclopedia Universal

  • Joseph Rogers — in 1789. [ [http://www.hck12.net/jrp/pages/history.htm History of Joseph Rogers] ] Early lifeRogers was born August 21, 1764 near Cookstown, Co Tyrone, Ireland, the son of James Rogers and his wife Elizabeth Brown. Rogers emigrated to the British …   Wikipedia

  • Rogers — Rogers, Ginger * * * (as used in expressions) Brown, Joseph Rogers Clark, George Rogers Commons, John R(ogers) Hornsby, Rogers Prince Rogers Nelson Rogers, Carl R(ansom) Rogers, Fred (McFeely) Mr. Rogers Rogers, Ginger Rogers, Robert …   Enciclopedia Universal

  • Brown — Brown, Herbert Charles Brown, James Brown, John Brown, Michael S. Brown, Robert * * * (as used in expressions) Brown v. Board of Education (de Topeka) Brown, Capability Lancelot Brown Brown, Charles Brockden …   Enciclopedia Universal

  • Rogers — /roj euhrz/, n. 1. Bernard, 1893 1968, U.S. composer. 2. Bruce, 1870 1957, U.S. book designer and printer. 3. Carl (Ransom), 1902 87, U.S. psychologist. 4. Ginger (Virginia Katherine McMath), born 1911, U.S. actress and dancer …   Universalium

  • Joseph — /joh zeuhf, seuhf/, n. 1. Jacob s eleventh son, the first of Jacob and his second wife, Rachel: sold into slavery by his brothers. Gen. 30:22 24; 37. 2. the husband of Mary who was the mother of Jesus. Matt. 1:16 25. 3. (Hinmaton yalaktit), c1840 …   Universalium

  • Joseph — (as used in expressions) Abbot, Sir John (Joseph Caldwell) Addison, Joseph Akiba ben Joseph Jacques Joseph Ahearn Arrow, Kenneth J(oseph) Abba Mari ben Moses ben Joseph Banks, Sir Joseph Belloc, (Joseph Pierre) Hilaire Berrigan, Daniel (Joseph) y …   Enciclopedia Universal

  • Joseph R. Underwood — Joseph Rogers Underwood (* 24. Oktober 1791 im Goochland County, Virginia; † 23. August 1876 im Warren County, Kentucky) war ein US amerikanischer Politiker (Whig Party), der den Staat Kentucky in beiden Kammern des US Kongresses vertrat …   Deutsch Wikipedia

  • Joseph M. White — Joseph Mills White (* 10. Mai 1781 im Franklin County, Kentucky; † 19. Oktober 1839 in St. Louis, Missouri) war ein US amerikanischer Politiker. Zwischen 1825 und 1837 vertrat er das Florida Territorium als Delegierter im US… …   Deutsch Wikipedia

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