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101 Breguet, Louis
SUBJECT AREA: Aerospace[br]b. 2 January 1880 Paris, Franced. 4 May 1955 Paris, France[br]French aviation pioneer who built a helicopter in 1907 and designed many successful aircraft.[br]The Breguet family had been manufacturing fine clocks since before the French Revolution, but Louis Breguet and his brother Jacques used their mechanical skills to produce a helicopter, or "gyroplane" as they named it. It was a complex machine with four biplane rotors (i.e. thirty-two lifting surfaces). Louis Breguet had carried out many tests to determine the most suitable rotor design. The Breguet brothers were assisted by Professor Charles Richet and the Breguet-Richet No. 1 was tested in September 1907 when it succeeded in lifting itself, and its pilot, to a height of 1.5 metres. Unfortunately, the gyroplane was rather unstable and four helpers had to steady it; consequently, the flight did not qualify as a "free" flight. This was achieved two months later, also in France, by Paul Cornu who made a 20-second free flight.Louis Breguet turned his attention to aeroplane design and produced a tractor biplane when most other biplanes followed the Wright brothers' layout with a forward elevator and pusher propeller. The Breguet I made quite an impression at the 1909 Reims meeting, but the Breguet IV created a world record the following year by carrying six people. During the First World War the Breguet Type 14 bomber was widely used by French and American squadrons. Between the First and Second World Wars a wide variety of designs were produced, including flying boats and another helicopter, the Breguet- Dorand Gyroplane which flew for over one hour in 1936. The Breguet company survived World War II and in the late 1940s developed a successful four-engined airliner/transport, the Deux-Ponts, which had a bulbous double-deck fuselage.Breguet was an innovative designer, although his designs were functional rather than elegant. He was an early advocate of metal construction and developed an oleo- (oil-spring) undercarriage leg.[br]Bibliography1925, Le Vol à voile dynamique des oiseaux. Analyse des effets des pulsations du vent sur la résultante aérodynamique moyenne d'un planeur, Paris.Further ReadingP.Faure, 1938, Louis Breguet, Paris (biography).C.H.Gibbs-Smith, 1965, The Invention of the Aeroplane 1799–1909, London (provides a careful analysis of Breguet's early aircraft).JDS -
102 Skinner, Halcyon
[br]b. 6 March 1824 Mantua, Ohio, USAd. 28 November 1900 USA[br]American inventor of a machine for making Royal Axminster and other carpets.[br]Halcyon was the son of Joseph and Susan Skinner. When he was 8 years old, his parents moved to Stockbridge in Massachusetts, where he obtained education locally and worked on farms. In 1838 his father moved to West Farms, New York, where Halcyon helped his father make violins and guitars for seven years. He then worked as a general carpenter for eight years until he was hired in 1849 by Alexander Smith, a carpet manufacturer. Skinner designed and constructed a hand loom that could weave figured instead of striped carpets, and by 1851 Smith had one hundred of these at work. Skinner was retained by Smith for forty years as a mechanical expert and adviser.Weaving carpets by power started in the 1850s on enormous and complex machines. Axminster carpets had traditionally been produced in a similar way to those made by hand in Persia, with the tufts of woollen yarn being knotted around vertical warp threads. To mechanize this process proved very difficult, but Skinner patented a loom in 1856 to weave Axminster carpets although, it was not working successfully until 1860. Then in 1864 he developed a loom for weaving ingrain carpets, and c. 1870 he altered some imported English looms for weaving tapestry carpets to double their output.His most important invention was conceived in 1876 and patented on 16 January 1877. This was the Moquette or Royal Axminster loom, which marked yet another important step forward and enabled the use of an unlimited number of colours in carpet designs. This type of loom became known as the Spool Axminster because of the endless chain of spools carrying lengths of coloured yarns, wound in a predetermined order, from which short pieces could be cut and inserted as the tufts. It put Smith's company, Alexander Smith \& Sons, Yonkers, New York, in the lead among American carpet manufacturers. This type of loom was introduced to Britain in 1878 by Tomkinson \& Adam and spread rapidly. Skinner virtually retired in 1889 but continued to live in Yonkers.[br]Further ReadingBiography, American Machinist 23.Dictionary of American Biography, Vol. XVII.G.Robinson, 1966, Carpets, London (for the history and techniques of carpet weaving).A.Barlow, 1878, The History and Principles of Weaving by Hand and by Power, London (includes a section on pile weaving which covers some types of carpets).RLH -
103 steel
сталь; арматура; стальной•
- acid-resistant steel
- alloy steel
- bar steel
- blue steel
- boiler steel
- carbon steel
- carburized steel
- carburizing steel
- cast steel
- chilled steel
- chisel tool steel
- chrome steel
- cold-working die steel
- commercial steel
- complex alloy steel
- concrete steel
- corrosion-resisting steel
- die steel
- drill steel
- effervescing steel
- eutectoid steel
- forging steel
- free-cutting steel
- hardened steel
- heat-resisting steel
- high-alloy steel
- high-carbon steel
- high-speed steel
- high steel
- high-tensile steel
- low-carbon steel
- machine steel
- plate steel
- rail steel
- rapid tool steel
- ribbon steel
- rustless steel
- screw steel
- sheet steel
- spring steel
- stainless steel
- structural steel
- tool steel
- welding steel
- wild steel
- wrought steel -
104 setup program
"A program whose function is to install another program, either on a storage medium or in memory. An installation program, also called a setup program, might be used to guide a user through the often complex process of setting up an application for a particular combination of machine, printer, and monitor."
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