Grant, George Barnard

Grant, George Barnard
[br]
b. 21 December 1849 Farmingdale, Gardiner, Maine, USA
d. 16 August 1917 Pasadena, California, USA
[br]
American mechanical engineer and inventor of Grant's Difference Engine.
[br]
George B.Grant was descended from families who came from Britain in the seventeenth century and was educated at the Bridgton (Maine) Academy, the Chandler Scientific School of Dartmouth College and the Lawrence Scientific School of Harvard College, where he graduated with the degree of BS in 1873. As an undergraduate he became interested in calculating machines, and his paper "On a new difference engine" was published in the American Journal of Science in August 1871. He also took out his first patents relating to calculating machines in 1872 and 1873. A machine of his design known as "Grant's Difference Engine" was exhibited at the Centennial Exposition in Philadelphia in 1876. Similar machines were also manufactured for sale; being sturdy and reliable, they did much to break down the prejudice against the use of calculating machines in business. Grant's work on calculating machines led to a requirement for accurate gears, so he established a machine shop for gear cutting at Charlestown, Massachusetts. He later moved the business to Boston and incorporated it under the name of Grant's Gear Works Inc., and continued to control it until his death. He also established two other gear-cutting shops, the Philadelphia Gear Works Inc., which he disposed of in 1911, and the Cleveland Gear Works Inc., which he also disposed of after a few years. Grant's commercial success was in connection with gear cutting and in this field he obtained several patents and contributed articles to the American Machinist. However, he continued to take an interest in calculating machines and in his later years carried out experimental work on their development.
[br]
Bibliography
1871, "On a new difference engine", American Journal of Science (August). 1885, Chart and Tables for Bevel Gears.
1885, A Handbook on the Teeth of Gear Wheels, Boston, Mass.
1891, Odontics, or the Theory and Practice of the Teeth of Gears, Lexington, Mass.
Further Reading
R.S.Woodbury, 1958, History of the Gear-cutting Machine, Cambridge, Mass, (describes his gear-cutting machine).
RTS

Biographical history of technology. - Taylor & Francis e-Librar. . 2005.

Игры ⚽ Поможем написать реферат

Look at other dictionaries:

  • Barnard, Vermont —   Town   Barnard, Vermont Coordinates …   Wikipedia

  • Barnard Hughes — (* 16. Juli 1915 in Bedford Hills, New York; † 11. Juli 2006 in New York City) war ein US amerikanischer Schauspieler. Inhaltsverzeichnis 1 Biografie 2 Privat 3 Filmografie (Aus …   Deutsch Wikipedia

  • George Huddleston — (* 11. November 1869 nahe Lebanon, Tennessee; † 29. Februar 1960 in Birmingham, Alabama) war ein US amerikanischer Politiker und vertrat den Bundesstaat Alabama im US Repräsentantenhaus. Werdegang George Huddleston wurde am 11. November 1869 auf… …   Deutsch Wikipedia

  • George Armstrong Custer — Custer redirects here. For other uses, see Custer (disambiguation). George Armstrong Custer …   Wikipedia

  • George Croghan — For other people named George Croghan, see George Croghan (disambiguation). George Croghan Born c. 1718[1] Ireland Died August 31, 1782 Passyunk, Pennsylvania Resting place …   Wikipedia

  • George Macaulay — Infobox Historic Cricketer nationality = English country = England country abbrev = ENG name = George Macaulay picture = Cricket no pic.png batting style = Right hand bat bowling style = Right arm medium, offbreak tests = 8 test runs = 112 test… …   Wikipedia

  • Neal D. Barnard — Neal Barnard Born Fargo, North Dakota Nationality American Education M.D. Alma mater George Washington University School of Medicine Occupation …   Wikipedia

  • List of Barnard College people — The following is a list of notable individuals associated with Barnard College through attendance as a student, service as a member of the faculty or staff, or award of the [http://www.barnard.edu/provost/medalists.html Barnard Medal of… …   Wikipedia

  • John G. Barnard — Infobox Military Person name=John G. Barnard born= birth date|1815|5|19 died= death date and age|1882|5|14|1815|5|19 placeofbirth=Sheffield, Massachusetts placeofdeath=Detroit, Michigan placeofburial=Barnard Cemetery, Sheffield, Massachusetts… …   Wikipedia

  • Doug Barnard, Jr. — Druie Douglas Barnard, Jr. (born March 20, 1922, in Augusta, Georgia) is a former United States congressman from Georgia. Barnard attended the Richmond County public schools and graduated from the Academy of Richmond County (Augusta, Georgia) in… …   Wikipedia

  • Fawbert and Barnard's School — Fawbert and Barnard s Undenominational (Voluntary Controlled) Primary School (London Road, Harlow, Essex CM17 ODA) was founded by a charitable trust in 1836 under a provision contained in the will of George Fawbert. The original charter, still… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”