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1 ALBR
Железнодорожный термин: Albany Bridge Railroad -
2 Whipple, Squire
SUBJECT AREA: Civil engineering[br]b. 1804 Hardwick, Massachusetts, USAd. 15 March 1888 Albany, New York, USA[br]American civil engineer, author and inventor.[br]The son of James and Electa Whipple, his father was a farmer and later the owner of a small cotton mil at Hardwick, Massachusetts. In 1817 Squire Whipple moved with his family to Otego County, New York. He helped on the farm and attended the academy at Fairfield, Herkimer County. For a time he taught school pupils, and in 1829 he entered Union College, Schenectady, where he received the degree of AB in 1830; his interest in engineering was probably aroused by the construction of the Erie Canal near his home during his boyhood. He was first employed in a minor capacity in surveys for the Baltimore and Ohio Railroad and for the Erie Canal. In 1836–7 he was resident engineer for a division of the New York and Erie Railroad and was also employed in a number of other railroad and canal surveys, making surveying instruments in the intervals between these appointments; in 1840, he completed a lock for weighing canal boats.Whipple received his first bridge patent on 24 April 1841; this was for a truss of arched upper chord made of cast and wrought iron. Five years later, he devised a trapezoidal truss which was used in the building of many bridges over the succeeding generation. In 1852–3 Whipple used his truss in an iron railroad bridge of 44.5 m (146 ft) span on the Rensselaer and Saratoga Railroad. He also built a number of bridges with lifting spans.Whipple's main contribution to bridge engineering was the publication in 1847 of A Work on Bridge Building. In 1869 he issued a continuation of this treatise, and a fourth edition of both was published in 1883.[br]Principal Honours and DistinctionsHonorary Member, American Society of Civil Engineers.IMcN -
3 Howe, William
SUBJECT AREA: Civil engineering[br]b. 12 May 1803 Spencer, Massachusetts, USAd. 19 September 1852 Springfield, Massachusetts, USA[br]American bridge engineer.[br]He was uncle of Elias Howe and spent his youth in the neighbourhood of his birthplace, primarily as a farmer. In 1838 he was commissioned to build a bridge at Warren, Massachusetts, for the Boston \& Albany Railway. He worked on this for two years, incorporating some novel features for which he applied for patents. His design was a truss with wooden diagonals and vertical iron ties in single and double systems which was said to be an improvement on the Long type of truss, introduced by Colonel Stephen Long in 1830. Howe was the first to incorporate the rectangular truss frame. Soon after this, he was to use his patent truss over the Connecticut River at Springfield for the Western Railroad. So successful was he that he became engaged for the rest of his life in the design of bridges and roof trusses, which, together with selling royalties for the rights to his patents, brought to him a considerable fortune. Many Howe truss bridges were built until the introduction of the iron bridge. In 1846 he took out a third patent for an improvement in the original rectangular truss, consisting of a curved timber member rising from each buttress to the centre of the span and greatly adding to the strength.[br]Further ReadingDictionary of American Biography, 1932–3, New York: Charles Scribner.IMcN
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