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Barr And Stroud
Barr & Stroud Limited was a pioneering Glasgow optical engineering firm. They played a leading role in the development of modern optics, including rangefinders, for the Royal Navy and for other branches of British Armed Forces during the 20th century. There was a non-military arm of the company which made medical equipment, like photocoagulators and electronic filters, some of which were used by the BBC. The company and its intellectual property passed through Pilkington group to Thales Optronics. The Barr and Stroud name was sold on to an importer of optical equipment, who use the trademarked name for a line of binoculars and similar instruments. History Archibald Barr and William Stroud had been associated from as early as 1888 when the two men were professors of, respectively, engineering and physics at the Yorkshire College (now the University of Leeds). In 1891, they were approached by the Admiralty to submit a design for a short-base rangefinder for trial. By this time, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Range-finding Instruments (Warships To-day, 1936)
A rangefinder (also rangefinding telemeter, depending on the context) is a device used to measure distances to remote objects. Originally optical devices used in surveying, they soon found applications in other fields, such as photography and in the military. They were specially useful for finding the range of a target, such as in naval gunnery and anti-aircraft artillery. The word ''telemeter'' is derived . Designs The first rangefinder telemeter was invented by James Watt in 1769 and put to use in 1771 in surveying canals. Watt called his instrument a micrometer, a term now used with a different meaning in engineering (the micrometer screw gauge). It consisted of two parallel hairs in the focal plane of a telescope eyepiece crossing an upright hair. At the point to be measured, two sliding targets on a surveyor's rod were adjusted to align with the hairs in the telescope. The distance to the rod could then be determined from the distance between the targets on the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ashton Lane
Ashton Lane is a cobbled backstreet in the West End of Glasgow. It is connected to Byres Road by a short linking lane beside Hillhead subway station and is noted for its bars, restaurants and a licensed cinema. Overview The Lane was not always the focus of West End cafe society. By the early 1970s, it was a run-down area of small residential and empty commercial properties. However, in 1976, the cost to renew the lease on the cramped property in Ruthven Lane that housed the Ubiquitous Chip restaurant forced the owner to look for new premises. 'The Chip', as it is locally known, moved to its current location in a derelict property that had been the stables for a funeral undertaker. The move was a gamble for the owner, Ronnie Clydesdale, since the Lane was a backwater to the thriving Byres Rd but in 1977 the Glasgow Subway closed for a major refurbishment. This forced several small businesses to relocate from Byres Rd and the then-famous Grosvenor Cafe followed The Chip into Ash ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minicomputer
A minicomputer, or colloquially mini, is a class of smaller general purpose computers that developed in the mid-1960s and sold at a much lower price than mainframe and mid-size computers from IBM and its direct competitors. In a 1970 survey, ''The New York Times'' suggested a consensus definition of a minicomputer as a machine costing less than (), with an input-output device such as a teleprinter and at least four thousand words of memory, that is capable of running programs in a higher level language, such as Fortran or BASIC. The class formed a distinct group with its own software architectures and operating systems. Minis were designed for control, instrumentation, human interaction, and communication switching as distinct from calculation and record keeping. Many were sold indirectly to original equipment manufacturers (OEMs) for final end use application. During the two decade lifetime of the minicomputer class (1965–1985), almost 100 companies formed and only a half ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SOLIDAC
The SOLIDAC (Solid-state Automatic Computer) was a 50kHz mini-computer at Glasgow University, built by Barr & Stroud Barr & Stroud Limited was a pioneering Glasgow optical engineering firm. They played a leading role in the development of modern optics, including rangefinders, for the Royal Navy and for other branches of British Armed Forces during the 20th c ... in the late 1950s; Some early computer music was created on the system. The machine is currently housed in the National Museums Scotland Collection Centre in Granton, Edinburgh. References External links Studio für Elektronische MusikShort paper by designer P.A.V Thomas The Design Philosophy of a Small ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
JA Prestwich Industries
JA Prestwich Industries, was a British engineering equipment manufacturing company named after founder John Alfred Prestwich, which was formed in 1951 by the amalgamation of J.A.Prestwich and Company Limited and Pencils Ltd. History John Prestwich, an engineer, commenced manufacture of scientific instruments in 1895, when he was 20, initially behind his father's house at 1 Lansdowne Road, Tottenham, London. By 1911 he had moved to new premises in Tariff Road, within the Northumberland Park area of Tottenham, London, anwhich still exists as of 2015 Prestwich was initially best known for his cinematography cameras and projectors. He worked with S.Z. de Ferranti and later the cinema pioneer William Friese-Greene. Circa 1902 J.A.Prestwich and Company began manufacturing motorcycle engines which were used in many motorcycle marques. The motorcycle engines were associated with racing and record success and were used in speedway bikes into the 1960s. Prestwich also made engines for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beardmore Precision Motorcycles
Beardmore Precision Motorcycles was a British motorcycle manufacturer formed in 1919 when the engine manufacturer F.E. Baker Ltd, who produced motorcycle and cyclecar engines under the 'Precision' trademark before World War I, entered into an arrangement with the large shipbuilding and engineering company William Beardmore and Company. History F.E. Baker Ltd had developed a substantial business making motorcycle and cyclecar engines supplied solely to manufacturers of completed vehicles. The engines were predominantly single and V-twin 4-strokes, with air or water cooling, though just before the war they had added a 2-stroke to their engine line-up. They also had a thriving export business, especially to Australia. During World War I production halted, and many of the small producers of motorcycles and cyclecars had ceased to exist, and after the war the company was faced with financing a restart. In 1919 F.E. Baker Ltd entered into an arrangement with William Beardmore and Comp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sleeve Valve
The sleeve valve is a type of valve mechanism for piston engines, distinct from the usual poppet valve. Sleeve valve engines saw use in a number of pre-World War II luxury cars and in the United States in the Willys-Knight car and light truck. They subsequently fell from use due to advances in poppet-valve technology, including sodium cooling, and the Knight system double sleeve engine's tendency to burn a lot of lubricating oil or to seize due to lack of it. The Scottish Argyll company used its own, much simpler and more efficient, single sleeve system (Burt-McCollum) in its cars, a system which, after extensive development, saw substantial use in British aircraft engines of the 1940s, such as the Napier Sabre, Bristol Hercules, Centaurus, and the promising but never mass-produced Rolls-Royce Crecy, only to be supplanted by the jet engines. Description A sleeve valve takes the form of one or more machined sleeves. It fits between the piston and the cylinder wall in the cylin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eastleigh
Eastleigh is a town in Hampshire, England, between Southampton and Winchester. It is the largest town and the administrative seat of the Borough of Eastleigh, with a population of 24,011 at the 2011 census. The town lies on the River Itchen, one of England's premier chalk streams for fly fishing, and a designated site of Special Scientific Interest. The area was originally villages until the 19th century, when Eastleigh was developed as a railway town by the London and South-Western Railway. History The modern town of Eastleigh lies on the old Roman road, built in A.D.79 between Winchester ''(Venta Belgarum)'' and Bitterne ''(Clausentum)''. Nicola Gosling: 1986, Page 4 Roman remains discovered in the Eastleigh area, including a Roman lead coffin excavated in 1908, indicate that a settlement probably existed here in Roman times. A Saxon village called 'East Leah' has been recorded to have existed since 932 AD. ('Leah' is an ancient Anglo-Saxon word meaning 'a clearing in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thales Group
Thales Group () is a French multinational company that designs, develops and manufactures electrical systems as well as devices and equipment for the aerospace, defence, transportation and security sectors. The company is headquartered in Paris' business district, La Défense, and its stock is listed on the Euronext Paris. Having been known as Thomson-CSF since its foundation in 1968, the company was rebranded ''Thales'' (named after the Greek philosopher Thales and pronounced , reflecting its pronunciation in French) in December 2000. A communication audit, launched in spring that year, highlighted Thomson-CSF's image deficit, particularly among the young French graduates it was seeking to recruit. The wish to liven up its image as well as the expansion of its business worldwide were cited among the reasons for the change. Thales is partially owned by the French State and operates in more than 56 countries. It had 80,000 employees and generated €18.4 billion in revenues in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alexander Stephen And Sons
Alexander Stephen and Sons Limited, often referred to simply as Alex Stephens or just Stephens, was a Scottish shipbuilding company based in Linthouse, Glasgow, on the River Clyde and, initially, on the east coast of Scotland. History The company's roots can be found in Alexander Stephen (1722–1793) who began shipbuilding at Burghead on the Moray Firth in 1750.Records of Alexander Stephen & Sons Ltd, shipbuilders and engineers, Linthouse, Govan, Glasgow, Scotland University of Glasgow Archives In 1793 William Stephen (1759–1838), a descendant of his, established a firm of shipbuilders at |
Linthouse
Linthouse is a neighbourhood in the city of Glasgow, Scotland. It is situated directly south of the River Clyde and lies immediately west of Govan, with other adjacent areas including Shieldhall and the Southern General Hospital to the west, and Drumoyne to the south. Although it is currently located within the Govan ward of Glasgow City Council, it was in fact a distinct area separate from Govan (the boundary being the former Fairfield Shipbuilding Company headquarters and Elder Park) until 1901 when it willfully became part of the Burgh of GovanBrotchie, T.C.F., (1905) The History Of Govan in turn both areas were annexed to Glasgow in 1912. Linthouse was home to the shipbuilder Alexander Stephen and Sons Limited who built many famous vessels for the Royal Navy in the 20th Century. Linthouse was a separate Church of Scotland parish (Linthouse St. Kenneth) until November 2007 when it merged with the neighbouring parishes of Govan Old and New Govan to become part of the n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Zeiss AG
Carl Zeiss AG (), branded as ZEISS, is a German manufacturer of optical systems and optoelectronics, founded in Jena, Germany in 1846 by optician Carl Zeiss. Together with Ernst Abbe (joined 1866) and Otto Schott (joined 1884) he laid the foundation for today's multi-national company. The current company emerged from a reunification of Carl Zeiss companies in East and West Germany with a consolidation phase in the 1990s. ZEISS is active in four business segments with approximately equal revenue (Industrial Quality and Research, Medical Technology, Consumer Markets and Semiconductor Manufacturing Technology) in almost 50 countries, has 30 production sites and around 25 development sites worldwide. Carl Zeiss AG is the holding of all subsidiaries within Zeiss Group, of which Carl Zeiss Meditec AG is the only one that is traded at the stock market. Carl Zeiss AG is owned by the foundation Carl-Zeiss-Stiftung. The Zeiss Group has its headquarters in southern Germany, in the smal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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