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Calamine Brass
Calamine brass is brass produced by a particular alloying technique using the zinc ore calamine directly, rather than first refining it to metallic zinc. Direct zinc smelting appears to have been unknown in Europe until the mid-18th century, even though the alloyed calamine brass was in use for centuries, and metallic zinc was produced directly via reducing-atmosphere smelting in India and China from the 12th century CE onwards. Brass is an alloy of copper and zinc and, when it was first developed, methods for producing metallic zinc were unknown. Metallurgists wishing to produce brass thus used calamine (actually a mixture of the virtually indistinguishable zinc ores smithsonite and hemimorphite) as the zinc component of brass. The resulting brasses, produced by heating a mixture of copper and calamine to a high temperature for several hours (allowing zinc vapor to distill from the ores and permeate the metallic copper), contained a significant amount of slag material resulting ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brass
Brass is an alloy of copper (Cu) and zinc (Zn), in proportions which can be varied to achieve different mechanical, electrical, and chemical properties. It is a substitutional alloy: atoms of the two constituents may replace each other within the same crystal structure. Brass is similar to bronze, another copper alloy, that uses tin instead of zinc. Both bronze and brass may include small proportions of a range of other elements including arsenic (As), lead (Pb), phosphorus (P), aluminium (Al), manganese (Mn), and silicon (Si). Historically, the distinction between the two alloys has been less consistent and clear, and modern practice in museums and archaeology increasingly avoids both terms for historical objects in favor of the more general "copper alloy". Brass has long been a popular material for decoration due to its bright, gold-like appearance; being used for drawer pulls and doorknobs. It has also been widely used to make utensils because of its low melti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Company Of Mineral And Battery Works
The Company of Mineral and Battery Works was, (with the Society of the Mines Royal), one of two mining monopolies created by Elizabeth I. The Company's rights were based on a patent granted to William Humfrey on 17 September 1565. This was replaced on 28 May 1568 by a patent of incorporation, making it an early joint stock company. The Society of the Mines Royal was incorporated on the same day. Shareholders The original shareholders were: *William Humfrey * Christopher Schutz * Sir Nicholas Bacon *Thomas Howard, 4th Duke of Norfolk * William Herbert, 1st Earl of Pembroke *Robert Dudley, 1st Earl of Leicester *William Brooke, 10th Baron Cobham *Sir William Cecil *Sir Walter Mildmay *Sir Henry Sidney *Sir Francis Jobson *Sir William Garrard, alderman * Sir Rowland Hayward *John Tamworth * Peter Osborne *Thomas Cecil *Francis Agarde * Thomas Fleetwood *William Roberts *Henry Coddenham *Robert Christmas *Roger Wetherall * William Patten *Christopher Chewte *Thomas Smythe *William Do ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brass Mill
A brass mill is a mill which processes brass. Brass mills are common in England; many date from long before the Industrial Revolution The Industrial Revolution was the transition to new manufacturing processes in Great Britain, continental Europe, and the United States, that occurred during the period from around 1760 to about 1820–1840. This transition included going f .... ;Examples of brass mills include: * Brassmill (Ross on Wye) * Saltford Brass Mill See also * Calamine brass * Latten * William Champion Further reading * Metallurgical facilities {{manufacturing-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Champion (metallurgist)
William Champion (1709–1789) is credited with patenting a process in Great Britain to distill zinc metal from calamine using charcoal in a smelter. Background After Abraham Darby I had left the Bristol Brass Company to form his own new copper works at Coalbrookdale, fellow Quaker Nehemiah Champion took over leadership. Nehemiah had three sons: John (1705–1794); Nehemiah (1709–1782); and the youngest William (1710–1789). Early life and patent As a young man, William Champion toured Europe to learn the art of brass making, returning to become a junior partner in the Bristol Brass Company in 1730. He then experimented for six years to develop a process to create zinc – then known as spelter. Using a scaled-up process similar to that used at the Zawar mines in India where this process was available centuries before William Champion rediscovered it, since the 12th century AD,p. 46, Ancient mining and metallurgy in Rajasthan, S. M. Gandhi, chapter 2 in ''Crustal Evolution ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Patent
A patent is a type of intellectual property that gives its owner the legal right to exclude others from making, using, or selling an invention for a limited period of time in exchange for publishing an enabling disclosure of the invention."A patent is not the grant of a right to make or use or sell. It does not, directly or indirectly, imply any such right. It grants only the right to exclude others. The supposition that a right to make is created by the patent grant is obviously inconsistent with the established distinctions between generic and specific patents, and with the well-known fact that a very considerable portion of the patents granted are in a field covered by a former relatively generic or basic patent, are tributary to such earlier patent, and cannot be practiced unless by license thereunder." – ''Herman v. Youngstown Car Mfg. Co.'', 191 F. 579, 584–85, 112 CCA 185 (6th Cir. 1911) In most countries, patent rights fall under private law and the patent holder ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United Kingdom
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the European mainland, continental mainland. It comprises England, Scotland, Wales and Northern Ireland. The United Kingdom includes the island of Great Britain, the north-eastern part of the island of Ireland, and many List of islands of the United Kingdom, smaller islands within the British Isles. Northern Ireland shares Republic of Ireland–United Kingdom border, a land border with the Republic of Ireland; otherwise, the United Kingdom is surrounded by the Atlantic Ocean, the North Sea, the English Channel, the Celtic Sea and the Irish Sea. The total area of the United Kingdom is , with an estimated 2020 population of more than 67 million people. The United Kingdom has evolved from a series of annexations, unions and separations of constituent countries over several hundred years. The Treaty of Union between ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smelting
Smelting is a process of applying heat to ore, to extract a base metal. It is a form of extractive metallurgy. It is used to extract many metals from their ores, including silver, iron, copper, and other base metals. Smelting uses heat and a chemical reducing agent to decompose the ore, driving off other elements as gases or slag and leaving the metal base behind. The reducing agent is commonly a fossil fuel source of carbon, such as coke—or, in earlier times, charcoal. The oxygen in the ore binds to carbon at high temperatures due to the lower potential energy of the bonds in carbon dioxide (). Smelting most prominently takes place in a blast furnace to produce pig iron, which is converted into steel. The carbon source acts as a chemical reactant to remove oxygen from the ore, yielding the purified metal element as a product. The carbon source is oxidized in two stages. First, the carbon (C) combusts with oxygen (O2) in the air to produce carbon monoxide (CO). Sec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birmingham
Birmingham ( ) is a City status in the United Kingdom, city and metropolitan borough in the metropolitan county of West Midlands (county), West Midlands in England. It is the second-largest city in the United Kingdom with a population of 1.145 million in the city proper, 2.92 million in the West Midlands (county), West Midlands metropolitan county, and approximately 4.3 million in the Birmingham metropolitan area, wider metropolitan area. It is the ESPON metropolitan areas in the United Kingdom, largest UK metropolitan area outside of London. Birmingham is known as the second city of the United Kingdom. Located in the West Midlands (region), West Midlands region of England, approximately from London, Birmingham is considered to be the social, cultural, financial and commercial centre of the Midlands. Distinctively, Birmingham only has small rivers flowing through it, mainly the River Tame, West Midlands, River Tame and its tributaries River Rea and River Cole, West Midlands ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cheadle, Staffordshire
Cheadle is a market town and civil parish in the Staffordshire Moorlands District of Staffordshire, England, with a population of 12,165 at the 2011 census. It is located between Uttoxeter, Leek, Ashbourne and Stoke-on-Trent. History Cheadle is an historic market town dating back to Anglo-Saxon times, being referred to in Domesday Book (1086). It lies within the historic Staffordshire Hundred of Totmonslow: for administrative purposes, it is now part of the Staffordshire Moorlands area. Cheadle appears in Domesday Book as "Celle" held by the lord of the manor, Robert of Stafford, at the time the area covered 6 miles by 3 miles and listed 9 families. In 1176 the Basset family acquired the manor of "Chedle" and in 1250 Ralph Basset was granted a market charter and annual fair by King Henry III. In 1309, 75 families are recorded as using a corn-grinding mill sited near Mill Road. Fifty years later, a new church was built in the village replacing a 12th-century structure and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bristol
Bristol () is a city, ceremonial county and unitary authority in England. Situated on the River Avon, it is bordered by the ceremonial counties of Gloucestershire to the north and Somerset to the south. Bristol is the most populous city in South West England. The wider Bristol Built-up Area is the eleventh most populous urban area in the United Kingdom. Iron Age hillforts and Roman villas were built near the confluence of the rivers Frome and Avon. Around the beginning of the 11th century, the settlement was known as (Old English: 'the place at the bridge'). Bristol received a royal charter in 1155 and was historically divided between Gloucestershire and Somerset until 1373 when it became a county corporate. From the 13th to the 18th century, Bristol was among the top three English cities, after London, in tax receipts. A major port, Bristol was a starting place for early voyages of exploration to the New World. On a ship out of Bristol in 1497, John Cabot, a Venetia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mines Royal Act 1689
The Royal Mines Act 1688 (1 Will & Mary c 30), sometimes referred to as the Mines Royal Act, is an Act of the Parliament of England. This Act was partly in force in Great Britain at the end of 2010.The Chronological Table of the Statutes, 1235 - 2010. The Stationery Office. 2011. . Part I. Page 68, read with pages viii and x. The Royal Mines Act 1688 repealed the ''Act Against Multipliers'' (5 Henry IV c. 4) (1404) which had made it a felony to create gold and silver by means of alchemy. The Act specified also that "no mine of tin, copper, iron or, lead, shall hereafter be adjudged, reputed, or taken to be a royal mine although gold or silver may be extracted out of the same." In doing so, the Act brought to an end the monopolies of the Society of Mines Royal and the Company of Mineral and Battery Works which had enjoyed exclusive rights to extract metal from certain mines. According to Isaac Newton, in a letter to John Locke, Robert Boyle 'procured the repeal of the Act of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sweden
Sweden, formally the Kingdom of Sweden,The United Nations Group of Experts on Geographical Names states that the country's formal name is the Kingdom of SwedenUNGEGN World Geographical Names, Sweden./ref> is a Nordic countries, Nordic country located on the Scandinavian Peninsula in Northern Europe. It borders Norway to the west and north, Finland to the east, and is connected to Denmark in the southwest by Øresund Bridge, a bridgetunnel across the Öresund. At , Sweden is the largest Nordic country, the third-largest country in the European Union, and the List of European countries by area, fifth-largest country in Europe. The Capital city, capital and largest city is Stockholm. Sweden has a total population of 10.5 million, and a low population density of , with around 87% of Swedes residing in urban areas in the central and southern half of the country. Sweden has a nature dominated by forests and a large amount of lakes, including List of largest lakes of Europ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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