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Erasmus Darwin Leavitt, Jr. (October 27, 1836 – March 11, 1916), also known as E. D. Leavitt, was a noted American mechanical engineer best known for his steam engine designs. Leavitt was born in Lowell, Massachusetts to Erasmus Darwin, Sr., a native of Cornish, New Hampshire, and Almina (Fay) Leavitt, graduated from local schools at age 16, and performed a 3-year apprenticeship at the Lowell Manufacturing Company.〔(Publications, Vol. IX, Proceedings, Cambridge Historical Society, January 27, 1914-October 27, 1914, Published by the Society, Cambridge, Mass., 1915 )〕 He then worked for one year at the engineering firm of Corliss & Nightingale in Providence, Rhode Island before returning to Boston, where he became assistant foreman for Harrison Loring. In this role he designed the steam engine for the USS ''Hartford''. From 1859–61 he again worked in Providence, this time as chief draftsman for Thurston, Gardner & Company, builders of steam engines. During the Civil War, Leavitt first served aboard the USS ''Sagamore'', then in construction roles in Baltimore, Boston, and Brooklyn, and ultimately as an instructor in steam engineering at the United States Naval Academy. In 1867 he resigned his teaching post to become a consulting engineer. Leavitt 〔Curiously, there was an Edward Levett Darwin, born in 1821 in Derbyshire, England, who was the grandson of Erasmus Darwin.〕 first achieved professional prominence in 1873 for his design of a novel pumping engine. From 1874–1904 he served as consulting engineer for the Calumet & Hecla Mining Company, where he designed more than 40 types of engines for a variety of uses for the company's Michigan mines. Each huge stationary steam engine was named, much like a steam locomotive or ship, with names including the Arcadia, Chippewa, Frontenac, Mackinac, Marquette, and Superior. He also designed steam-powered water pumps for various municipal water systems, including those of Louisville, Kentucky and Boston, and the power source for a hydraulic forge at the Bethlehem Steel Company. Leavitt was a member of the American Academy of Arts and Sciences, and a founding member of the American Society of Mechanical Engineers, for which he served as Vice President from 1881–82, and President in 1883. In 1884 he received the first honorary doctorate of engineering degree granted by the Stevens Institute of Technology. Leavitt was a resident of Cambridge, Massachusetts.〔(A History of Cambridge, Massachusetts, 1630–1916, Samuel Atkins Eliot, Cambridge Tribune, Cambridge, 1913 )〕 He and his wife, the former Elizabeth Pettit, daughter of Philadelphia locomotive designer William Pettit, had five children: Mary Alford; Hart Hooker; Margaret Almira; Harriet Sherman; and Annie Louise.〔(History of Middlesex County, and Biographical Sketches, Vol. I, Duane Hamilton Hurd, J. W. Lewis & Co., Philadelphia, 1890 )〕 == See also == * Leavitt-Riedler Pumping Engine * (Leavitt Pumping Engine paper PDF version ) at the (American Society of Mechanical Engineers ), (Leavitt Pumping Engine paper HTML version ) at google, see page 6 for his biography. * (Chestnut Hill Reservation History ), which mentions the early pumps. * Henrietta Swan Leavitt, his niece, and an astronomer noted for her pioneering work on Cepheid variable stars. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Erasmus Darwin Leavitt, Jr.」の詳細全文を読む スポンサード リンク
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