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Sir Henry Bessemer
Sir Henry Bessemer (19 January 1813 – 15 March 1898) was an English inventor, whose steel-making process would become the most important technique for making steel in the nineteenth century for almost one hundred years from 1856 to 1950. He also played a significant role in establishing the town of Sheffield, nicknamed ‘Steel City’, as a major industrial centre. Bessemer had been trying to reduce the cost of steel-making for military ordnance, and developed his system for blowing air through molten pig iron to remove the impurities. This made steel easier, quicker and cheaper to manufacture, and revolutionised structural engineering. One of the most significant inventors of the Second Industrial Revolution, Bessemer also made over 100 other inventions in the fields of iron, steel and glass. Unlike many inventors, he managed to bring his own projects to fruition and profited financially from their success. He was knighted for his contribution to science in 1879, and in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charlton, Hertfordshire
Charlton is a hamlet (place), hamlet in the county of Hertfordshire, in the East of England. It is a component hamlet of the market town of Hitchin, forming a part of the Hitchin Priory Wards and electoral divisions of the United Kingdom, ward. Its rural character is protected as a Conservation area (United Kingdom), Conservation Area. Situated east of the Chiltern Hills, Chilterns Area of Outstanding Natural Beauty, AONB, it lies 30 miles north of London. The Charlton Manor, manor of Charlton is mentioned in the Domesday Book as belonging to Ilbert of Hitchin. It later came into the possession of the Knights Templar, and then by the Knights Hospitaller with the manor of Temple Dinsley until the suppression of the latter order. The manor subsequently came to Edward Pulter, who sold it in 1582 to Ralph Radcliffe from which time it was part of the property of Hitchin Priory. Charlton House is a Grade II listed building, Grade II listed building and the birthplace of inventor Henry ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Punchcutting
Punchcutting is a craft used in traditional typography to cut letter punches in steel as the first stage of making metal type. Steel punches in the shape of the letter would be used to stamp matrices into copper, which were locked into a mould shape to cast type. Cutting punches and casting type was the first step of traditional typesetting. The cutting of letter punches was a highly skilled craft requiring much patience and practice. Often the designer of the type would not be personally involved in the cutting. The initial design for type would be two-dimensional, but a punch has depth, and the three-dimensional shape of the punch, as well as factors such as the angle and depth to which it was driven into the matrix, would affect the appearance of the type on the page. The angle of the side of the punch was particularly significant. Process The punchcutter begins by transferring the outline of a letter design to one end of a steel bar. The outer shape of the punch could ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wrought Iron
Wrought iron is an iron alloy with a very low carbon content (less than 0.08%) in contrast to that of cast iron (2.1% to 4%). It is a semi-fused mass of iron with fibrous slag inclusions (up to 2% by weight), which give it a wood-like "grain" that is visible when it is etched, rusted, or bent to failure. Wrought iron is tough, malleable, ductile, corrosion resistant, and easily forge welded, but is more difficult to weld electrically. Before the development of effective methods of steelmaking and the availability of large quantities of steel, wrought iron was the most common form of malleable iron. It was given the name ''wrought'' because it was hammered, rolled, or otherwise worked while hot enough to expel molten slag. The modern functional equivalent of wrought iron is mild steel, also called low-carbon steel. Neither wrought iron nor mild steel contain enough carbon to be hardenable by heating and quenching. Wrought iron is highly refined, with a small amount of sili ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cast Iron
Cast iron is a class of iron– carbon alloys with a carbon content more than 2%. Its usefulness derives from its relatively low melting temperature. The alloy constituents affect its color when fractured: white cast iron has carbide impurities which allow cracks to pass straight through, grey cast iron has graphite flakes which deflect a passing crack and initiate countless new cracks as the material breaks, and ductile cast iron has spherical graphite "nodules" which stop the crack from further progressing. Carbon (C), ranging from 1.8 to 4 wt%, and silicon (Si), 1–3 wt%, are the main alloying elements of cast iron. Iron alloys with lower carbon content are known as steel. Cast iron tends to be brittle, except for malleable cast irons. With its relatively low melting point, good fluidity, castability, excellent machinability, resistance to deformation and wear resistance, cast irons have become an engineering material with a wide range of applications and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bessemer 5180
Bessemer may refer to: Places Canada *Bessemer, Ontario United States *Bessemer, Alabama **Bessemer Airport **Bessemer Civic Center *Bessemer, Colorado *Bessemer, Michigan *Bessemer City, North Carolina *Bessemer, Ohio *Bessemer, Pennsylvania (other), multiple locations *Bessemer Mountain, a summit in Washington state *Bessemer Township, Michigan *A fictitious town in Upstate New York in David Stout's novel ''The Night of the Ice Storm'' Other uses * The Bessemer process, the first inexpensive industrial production method for steel *Bessemer (surname) * SS Bessemer, SS ''Bessemer'', a Victorian experimental paddle steamer * ''Bessemer'', a GWR 3031 Class locomotive See also * {{disambiguation, geo, surname German-language surnames ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
James Nasmyth
James Hall Nasmyth (sometimes spelled Naesmyth, Nasmith, or Nesmyth) (19 August 1808 – 7 May 1890) was a Scottish engineer, philosopher, artist and inventor famous for his development of the steam hammer. He was the co-founder of Nasmyth, Gaskell and Company manufacturers of machine tools. He retired at the age of 48, and moved to Penshurst, Kent where he developed his hobbies of astronomy and photography. Early life Nasmyth was born at 47 York Place, Edinburgh where his father Alexander Nasmyth was a landscape and portrait painter. One of Alexander's hobbies was mechanics and he employed nearly all his spare time in his workshop where he encouraged his youngest son to work with him in all sorts of materials. James was sent to the Royal High School where he had as a friend, Jimmy Patterson, the son of a local iron founder. Being already interested in mechanics he spent much of his time at the foundry and there he gradually learned to work and turn in wood, brass, iron ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Times
''The Times'' is a British daily national newspaper based in London. It began in 1785 under the title ''The Daily Universal Register'', adopting its current name on 1 January 1788. ''The Times'' and its sister paper '' The Sunday Times'' (founded in 1821) are published by Times Newspapers, since 1981 a subsidiary of News UK, in turn wholly owned by News Corp. ''The Times'' and ''The Sunday Times'', which do not share editorial staff, were founded independently and have only had common ownership since 1966. In general, the political position of ''The Times'' is considered to be centre-right. ''The Times'' is the first newspaper to have borne that name, lending it to numerous other papers around the world, such as ''The Times of India'', ''The New York Times'', and more recently, digital-first publications such as TheTimesBlog.com (Since 2017). In countries where these other titles are popular, the newspaper is often referred to as , or as , although the newspaper is of nat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Association
The British Science Association (BSA) is a charity and learned society founded in 1831 to aid in the promotion and development of science. Until 2009 it was known as the British Association for the Advancement of Science (BA). The current Chief Executive is Katherine Mathieson. The BSA's mission is to get more people engaged in the field of science by coordinating, delivering, and overseeing different projects that are suited to achieve these goals. The BSA "envisions a society in which a diverse group of people can learn and apply the sciences in which they learn." and is managed by a professional staff located at their Head Office in the Wellcome Wolfson Building. The BSA offers a wide variety of activities and events that both recognize and encourage people to be involved in science. These include the British Science Festival, British Science Week, the CREST Awards, Huxley Summit, Media Fellowships Scheme, along with regional and local events. History Foundation The Asso ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plate Glass
Plate glass, flat glass or sheet glass is a type of glass, initially produced in plane form, commonly used for windows, glass doors, transparent walls, and windscreens. For modern architectural and automotive applications, the flat glass is sometimes bent after production of the plane sheet. Flat glass stands in contrast to ''container glass'' (used for bottles, jars, cups) and ''glass fibre'' (used for thermal insulation, in fibreglass composites, and for optical communication). Flat glass has a higher magnesium oxide and sodium oxide content than container glass, and a lower silica, calcium oxide, and aluminium oxide content."High temperature glass melt property database for process modeling"; Eds.: Thomas P. Seward III and Terese Vascott; The American Ceramic Society, Westerville, Ohio, 2005, From the lower soluble oxide content comes the better chemical durability of container glass against water, which is required especially for storage of beverages and food. Most ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Half Crown (British Coin)
The British half crown was a denomination of sterling coinage worth of one pound, or two shillings and six pence (abbreviated "2/6", familiarly "two and six"), or 30 (old) pence. The half crown was first issued in 1549, in the reign of Edward VI. No half crowns were issued in the reign of Mary, but from the reign of Elizabeth I half crowns were issued in every reign except that of Edward VIII, until the coins were discontinued in 1970. The half crown was demonetised (ahead of other pre-decimal coins) on 1 January 1970, the year before the United Kingdom adopted decimal currency on Decimal Day. During the English Interregnum of 1649–1660, a republican half crown was issued, bearing the arms of the Commonwealth of England, despite monarchist associations of the coin's name. When Oliver Cromwell was made Lord Protector of England, half crowns were issued bearing his portrait depicting him wearing a laurel wreath in the manner of a Roman Emperor. The half crown did not displ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
£sd
£sd (occasionally written Lsd, spoken as "pounds, shillings and pence" or pronounced ) is the popular name for the pre-decimal currencies once common throughout Europe, especially in the British Isles and hence in several countries of the British Empire and subsequently the Commonwealth. The abbreviation originates from the Latin currency denominations '' librae'', ''solidi'', and ''denarii''. In the United Kingdom, these were referred to as '' pounds'', '' shillings'', and '' pence'' (''pence'' being the plural of ''penny''). Although the names originated from popular coins in the classical Roman Empire, their definitions and the ratios between them were introduced and imposed across Western Europe by the Emperor Charlemagne. The £sd system was the standard across much of the European continent (France, Italy, Germany, etc.) for nearly a thousand years, until the decimalisations of the 18th and 19th centuries. As the United Kingdom remained one of the few countries re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
