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David Brown Engineering Limited is an English engineering company, principally engaged in the manufacture of gears and gearboxes. Their major gear manufacturing plant is in Swan Lane, Lockwood, Huddersfield, adjacent to Lockwood railway station. It is named after the company's founder, David Brown, though it is more closely associated with his grandson, Sir David Brown. ==History== Founded in 1860 as a pattern manufacturing company, by 1873 David Brown had begun to concentrate on gear systems, and by 1898 was specialising in machine-cut gears. The company moved in 1902 to Park Works at Huddersfield, where the firm is based today. When David Brown died in 1903, his sons Percy and Frank took over and began the manufacture of complete gear units, bearings and shafts and worm drive gears. Gearing manufactured by David Brown Ltd. and powered by electric motors manufactured by Brook Crompton (Electric) Motors, whose factory was in Brockholes are used to rotate the top of the BT Tower in London.〔http://www.brookcrompton.com/pages/history.htm〕 In 1913 they established a joint venture in America with Timken for worm drive units. By the end of World War I the workforce had increased from 200 to 1000 as they started building propulsion units for warships, and drive mechanisms for armaments. By 1921 the company was the largest worm gear manufacturer in the world.〔http://www.davidbrown.com/history.php〕 In 1930 the company took over P.R. Jackson Ltd, another local firm of gear manufacturers and steel founders. Percy's eldest son (Sir David Brown) became managing director in 1931 following Percy's death, with Frank becoming chairman. The firm formed another overseas joint venture with Richardson Gears (Pty) Ltd of Footscray, Victoria, Australia in 1934. In 1934 the company also built a new factory on a site at Meltham, on the south side of Huddersfield. Brown started building tractors with Harry Ferguson there in 1936. The company obtained a patent for a tank transmission using controlled differential steering system, known as the Merritt-Brown system in 1935.〔 The first vehicle to use this system was the Churchill tank, and it was subsequently used on the Centurion tank and the Conqueror tank, as well as the Tortoise heavy tank. 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「David Brown Ltd.」の詳細全文を読む スポンサード リンク
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