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1 Leominster
Леминстер (Великобритания, Англия) -
2 Wyatt, John
[br]b. April 1700 Thickbroom, Weeford, near Lichfield, Englandd. 29 November 1766 Birmingham, England[br]English inventor of machines for making files and rolling lead, and co-constructor of a cotton-spinning machine.[br]John Wyatt was the eldest son of John and Jane Wyatt, who lived in the small village of Thickbroom in the parish of Weeford, near Lichfield. John the younger was educated at Lichfield school and then worked as a carpenter at Thickbroom till 1730. In 1732 he was in Birmingham, engaged by a man named Heely, a gunbarrel forger, who became bankrupt in 1734. Wyatt had invented a machine for making files and sought the help of Lewis Paul to manufacture this commercially.The surviving papers of Paul and Wyatt in Birmingham are mostly undated and show a variety of machines with which they were involved. There was a machine for "making lead hard" which had rollers, and "a Gymcrak of some consequence" probably refers to a machine for boring barrels or the file-making machine. Wyatt is said to have been one of the unsuccessful competitors for the erection of London Bridge in 1736. He invented and perfected the compound-lever weighing machine. He had more success with this: after 1744, machines for weighing up to five tons were set up at Birmingham, Chester, Gloucester, Hereford, Lichfield and Liverpool. Road construction, bridge building, hydrostatics, canals, water-powered engines and many other schemes received his attention and it is said that he was employed for a time after 1744 by Matthew Boulton.It is certain that in April 1735 Paul and Wyatt were working on their spinning machine and Wyatt was making a model of it in London in 1736, giving up his work in Birmingham. The first patent, in 1738, was taken out in the name of Lewis Paul. It is impossible to know which of these two invented what. This first patent covers a wide variety of descriptions of the vital roller drafting to draw out the fibres, and it is unknown which system was actually used. Paul's carding patent of 1748 and his second spinning patent of 1758 show that he moved away from the system and principles upon which Arkwright built his success. Wyatt and Paul's spinning machines were sufficiently promising for a mill to be set up in 1741 at the Upper Priory, Birmingham, that was powered by two asses. Wyatt was the person responsible for constructing the machinery. Edward Cave established another at Northampton powered by water while later Daniel Bourn built yet another at Leominster. Many others were interested too. The Birmingham mill did not work for long and seems to have been given up in 1743. Wyatt was imprisoned for debt in The Fleet in 1742, and when released in 1743 he tried for a time to run the Birmingham mill and possibly the Northampton one. The one at Leominster burned down in 1754, while the Northampton mill was advertised for sale in 1756. This last mill may have been used again in conjunction with the 1758 patent. It was Wyatt whom Daniel Bourn contacted about a grant for spindles for his Leominster mill in 1748, but this seems to have been Wyatt's last association with the spinning venture.[br]Further ReadingG.J.French, 1859, The Life and Times of Samuel Crompton, London (French collected many of the Paul and Wyatt papers; these should be read in conjunction with Hills 1970).R.L.Hills, 1970, Power in the Industrial Revolution, Manchester (Hills shows that the rollerdrafting system on this spinning machine worked on the wrong principles). A.P.Wadsworth and J.de L.Mann, 1931, The Cotton Trade and Industrial Lancashire, 1600–1780, Manchester (provides good coverage of the partnership of Paul and Wyatt and of the early mills).E.Baines, 1835, History of the Cotton Manufacture in Great Britain, London (this publication must be mentioned, although it is now out of date).W.English, 1969, The Textile Industry, London (a more recent account).W.A.Benton, "John Wyatt and the weighing of heavy loads", Transactions of the Newcomen Society 9 (for a description of Wyatt's weighing machine).RLH -
3 Bourn, Daniel
SUBJECT AREA: Textiles[br]fl. 1744 Lancashire, England[br]English inventor of a machine with cylinders for carding cotton.[br]Daniel Bourn may well have been a native of Lancashire. He set up a fourth Paul-Wyatt cotton-spinning mill at Leominster, Herefordshire, possibly in 1744, although the earliest mention of it is in 1748. His only known partner in this mill was Henry Morris, a yarn dealer who in 1743 had bought a grant of spindles from Paul at the low rate of 30 shillings or 40 shillings per spindle when the current price was £3 or £4. When Bourn patented his carding engine in 1748, he asked Wyatt for a grant of spindles, to which Wyatt agreed because £100 was offered immedi-ately. The mill, which was probably the only one outside the control of Paul and his backers, was destroyed by fire in 1754 and was not rebuilt, although Bourn and his partners had considerable hopes for it. Bourn was said to have lost over £1,600 in the venture.Daniel Bourn described himself as a wool and cotton dealer of Leominster in his patent of 1748 for his carding engine. The significance of this invention is the use of rotating cylinders covered with wire clothing. The patent drawing shows four cylinders, one following the other to tease out the wool, but Bourn was unable to discover a satisfactory method of removing the fibres from the last cylinder. It is possible that Robert Peel in Lancashire obtained one of these engines through Morris, and that James Hargreaves tried to improve it; if so, then some of the early carding engines in the cotton industry were derived from Bourn's.[br]Bibliography1748, British patent no. 628 (carding engine).Further ReadingA.P.Wadsworth and J.de Lacy Mann, 1931, The Cotton Trade and Industrial Lancashire 1600–1780, Manchester (the most significant reference to Bourn).R.L.Hills, 1970, Power in the Industrial Revolution, Manchester (provides an examination of the carding patent).R.S.Fitton, 1989, The Arkwrights, Spinners of Fortune, Manchester (mentions Bourn in his survey of the textile scene before Arkwright).R.Jenkins, 1936–7, "Industries of Herefordshire in Bygone Times", Transactions of the Newcomen Society 17 (includes a reference to Bourn's mill).C.Singer (ed.), 1957, A History of Technology, Vol. III, Oxford: Clarendon Press; ibid., 1958, Vol, IV (brief mentions of Bourn's work).RLH -
4 Black, Harold Stephen
[br]b. 14 April 1898 Leominster, Massachusetts, USAd. 11 December 1983 Summitt, New Jersey, USA[br]American electrical engineer who discovered that the application of negative feedback to amplifiers improved their stability and reduced distortion.[br]Black graduated from Worcester Polytechnic Institute, Massachusetts, in 1921 and joined the Western Electric Company laboratories (later the Bell Telephone Laboratories) in New York City. There he worked on a variety of electronic-communication problems. His major contribution was the discovery in 1927 that the application of negative feedback to an amplifier, whereby a fraction of the output signal is fed back to the input in the opposite phase, not only increases the stability of the amplifier but also has the effect of reducing the magnitude of any distortion introduced by it. This discovery has found wide application in the design of audio hi-fi amplifiers and various control systems, and has also given valuable insight into the way in which many animal control functions operate.During the Second World War he developed a form of pulse code modulation (PCM) to provide a practicable, secure telephony system for the US Army Signal Corps. From 1963–6, after his retirement from the Bell Labs, he was Principal Research Scientist with General Precision Inc., Little Falls, New Jersey, following which he became an independent consultant in communications. At the time of his death he held over 300 patents.[br]Principal Honours and DistinctionsInstitute of Electronic and Radio Engineers Lamme Medal 1957.Bibliography1934, "Stabilised feedback amplifiers", Electrical Engineering 53:114 (describes the principles of negative feedback).21 December 1937, US patent no. 2,106,671 (for his negative feedback discovery.1947, with J.O.Edson, "Pulse code modulation", Transactions of the American Institute of Electrical Engineers 66:895.1946, "A multichannel microwave radio relay system", Transactions of the American Institute of Electrical Engineers 65:798.1953, Modulation Theory, New York: D.van Nostrand.1988, Laboratory Management: Principles \& Practice, New York: Van Nostrand Rheinhold.Further ReadingFor early biographical details see "Harold S. Black, 1957 Lamme Medalist", Electrical Engineering (1958) 77:720; "H.S.Black", Institute of Electrical and Electronics Engineers Spectrum (1977) 54.KF
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Leominster — Leominster, MA U.S. city in Massachusetts Population (2000): 41303 Housing Units (2000): 16976 Land area (2000): 28.877819 sq. miles (74.793205 sq. km) Water area (2000): 0.879274 sq. miles (2.277308 sq. km) Total area (2000): 29.757093 sq. miles … StarDict's U.S. Gazetteer Places
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