-
1 Champion, Nehemiah
SUBJECT AREA: Metallurgy[br]b. 1678 probably Bristol, Englandd. 9 September 1747 probably Bristol, England[br]English merchant and brass manufacturer of Bristol.[br]Several members of Champion's Quaker family were actively engaged as merchants in Bristol during the late seventeenth and the eighteenth centuries. Port records show Nehemiah in receipt of Cornish copper ore at Bristol's Crews Hole smelting works by 1706, in association with the newly formed brassworks of the city. He later became a leading partner, managing the company some time after Abraham Darby left the Bristol works to pursue his interest at Coalbrookdale. Champion, probably in company with his father, became the largest customer for Darby's Coalbrookdale products and also acted as Agent, at least briefly, for Thomas Newcomen.A patent in 1723 related to two separate innovations introduced by the brass company.The first improved the output of brass by granulating the copper constituent and increasing its surface area. A greater proportion of zinc vapour could permeate the granules compared with the previous practice, resulting in the technique being adopted generally in the cementation process used at the time. The latter part of the same patent introduced a new type of coal-fired furnace which facilitated annealing in bulk so replacing the individual processing of pieces. The principle of batch annealing was generally adopted, although the type of furnace was later improved. A further patent, in 1739, in the name of Nehemiah, concerned overshot water-wheels possibly intended for use in conjunction with the Newcomen atmospheric pumping engine employed for recycling water by his son William.Champion's two sons, John and William, and their two sons, both named John, were all concerned with production of non-ferrous metals and responsible for patented innovations. Nehemiah, shortly before his death, is believed to have partnered William at the Warmley works to exploit his son's new patent for producing metallic zinc.[br]Bibliography1723, British patent no. 454 (granulated copper technique and coal-fired furnace). 1739, British patent no. 567 (overshot water-wheels).Further ReadingA.Raistrick, 1950, Quakers in Science and Industry, London: Bannisdale Press (for the Champion family generally).J.Day, 1973, Bristol Brass, a History of the Industry, Newton Abbot: David \& Charles (for the industrial activities of Nehemiah).JD -
2 Champion, William
SUBJECT AREA: Metallurgy[br]b. 1710 Bristol, Englandd. 1789 England[br]English metallurgist, the first to produce metallic zinc in England on an industrial scale.[br]William, the youngest of the three sons of Nehemiah Champion, stemmed from a West Country Quaker family long associated with the metal trades. His grandfather, also called Nehemiah, had been one of Abraham Darby's close Quaker friends when the brassworks at Baptist Mills was being established in 1702 and 1703. Nehemiah II took over the management of these works soon after Darby went to Coalbrookdale, and in 1719, as one of a group of Bristol copper smelters, he negotiated an agreement with Lord Falmouth to develop copper mines in the Redruth area in Cornwall. In 1723 he was granted a patent for a cementation brass-making process using finely granulated copper rather than the broken fragments of massive copper hitherto employed.In 1730 he returned to Bristol after a tour of European metallurgical centres, and he began to develop an industrial process for the manufacture of pure zinc ingots in England. Metallic zinc or spelter was then imported at great expense from the Far East, largely for the manufacture of copper alloys of golden colour used for cheap jewellery. The process William developed, after six years of experimentation, reduced zinc oxide with charcoal at temperatures well above the boiling point of zinc. The zinc vapour obtained was condensed rapidly to prevent reoxidation and finally collected under water. This process, patented in 1738, was operated in secret until 1766 when Watson described it in his Chemical Essays. After encountering much opposition from the Bristol merchants and zinc importers, William decided to establish his own integrated brassworks at Warmley, five meals east of Bristol. The Warmley plant began to produce in 1748 and expanded rapidly. By 1767, when Warmley employed about 2,000 men, women and children, more capital was needed, requiring a Royal Charter of Incorporation. A consortium of Champion's competitors opposed this and secured its refusal. After this defeat William lost the confidence of his fellow directors, who dismissed him. He was declared bankrupt in 1769 and his works were sold to the British Brass Company, which never operated Warmley at full capacity, although it produced zinc on that site until 1784.[br]Bibliography1723, British patent no. 454 (cementation brass-making process).1738, British patent no. 564 (zinc ingot production process).1767, British patent no. 867 (brass manufacture wing zinc blende).Further ReadingJ.Day, 1973, Bristol Brass: The History of the Industry, Newton Abbot: David \& Charles.A.Raistrick, 1970, Dynasty of Ironfounders: The Darbys and Coalbrookdale, Newton Abbot: David \& Charles.J.R.Harris, 1964, The Copper King, Liverpool University Press.ASD -
3 Metallurgy
См. также в других словарях:
Nehemiah D. Sperry — Nehemiah Day Sperry (* 10. Juli 1827 in Woodbridge, Connecticut; † 13. November 1911 in New Haven, Connecticut) war ein US amerikanischer Politiker. Zwischen 1895 und 1911 vertrat er den zweiten Wahlbezirk des Bundesstaates Connecticut im US … Deutsch Wikipedia
Renaldo Nehemiah — NFL player Name=Renaldo Nehemiah DateOfBirth=birth date and age|1959|3|24 Birthplace= Newark, New Jersey DateOfDeath= Height ft=6 Height in=1 Weight lbs=177 Position=Wide receiver number=83 College=University of Maryland DraftedYear= DraftedRound … Wikipedia
biblical literature — Introduction four bodies of written works: the Old Testament writings according to the Hebrew canon; intertestamental works, including the Old Testament Apocrypha; the New Testament writings; and the New Testament Apocrypha. The Old… … Universalium
Colin Jackson — Pour les articles homonymes, voir Jackson. Colin Jackson … Wikipédia en Français
Dwain Chambers — Personal information Nationality English Born 5 April 1978 (1978 04 05) (age 33) Lo … Wikipedia
Dave Johnson (athlete) — For the Canadian 1924 Olympic athlete, see David Johnson (athlete). Medal record Men s athletics Competitor for United States … Wikipedia
Judaism — /jooh dee iz euhm, day , deuh /, n. 1. the monotheistic religion of the Jews, having its ethical, ceremonial, and legal foundation in the precepts of the Old Testament and in the teachings and commentaries of the rabbis as found chiefly in the… … Universalium
Jewish name — For the article on Hebrew given names, see Hebrew name.The Jewish name has historically varied, encompassing throughout the centuries several different traditions. This article looks at the onomastics practices of the Jewish People, that is, the… … Wikipedia
Charles White (American football) — For other people named Charles White, see Charles White (disambiguation). Charles White Position(s) Running back Jersey #(s) 33 Born January 22, 1958 (1958 01 22) (age 53) Los Angeles, California … Wikipedia
Palestine — /pal euh stuyn / for 1, 2; /pal euh steen / for 3, n. 1. Also called Holy Land. Biblical name, Canaan. an ancient country in SW Asia, on the E coast of the Mediterranean. 2. a former British mandate (1923 48) comprising part of this country,… … Universalium
Brass — For other uses, see Brass (disambiguation). Brass die, along with zinc and copper samples. Brass is an alloy of copper and zinc; the proportions of zinc and copper can be varied to create a range of brasses with varying properties.[1] In … Wikipedia