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Clevite Industries
: ''For the radioactive mineral, see Cleveite.'' Clevite, Inc. was a Cleveland, Ohio based manufacturing company, founded as the Cleveland Graphite Bronze Company. The company was a leading producer of Babbit bearings and a significant US government defense contractor. The bearings were licensed in Britain to Vandervell Products Ltd; W. A. Robotham of Rolls-Royce said that "it was an exceedingly difficult task for Tony Vandervell ... knowing the American company well". In 1952 the Cleveland Graphite Bronze Company absorbed the Brush Development Company and Brush Labs in a merger. In 1953 it acquired 51% of Transistor Products Inc., and with other acquisitions such as the German ''Intermetall'' in 1955 (a company founded in 1952 by pioneering German physicist and developer of the first "European" transistor Herbert Mataré, and subsequently sold to telecommunications giant ITT in 1965) developed a semiconductor division. By 1959, over one-third of Clevite's sales were in elec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cleveite
Cleveite is an impure radioactive variety of uraninite containing uranium, found in Norway. It has the composition UO2 with about 10% of the uranium substituted by rare-earth elements. It was named after Swedish chemist Per Teodor Cleve. Cleveite was the first known terrestrial source of helium, which is created over time by alpha decay of the uranium and accumulates trapped (occluded) within the mineral. The first sample of helium was obtained by William Ramsay in 1895 when he treated a sample of the mineral with acid.https://archive.org/details/becquerelraysthe00raylrich Rayleigh, Robert and John Strutt, 1904, The Becquerel rays and the properties of radium, London, E. Arnold. Cleve and Abraham Langlet succeeded in isolating helium from cleveite at about the same time. Yttrogummite is a variant of cleveite also found in Norway. See also * List of minerals * List of minerals named after people This is a list of minerals named after people. The chemical composition follows na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cleveland
Cleveland ( ), officially the City of Cleveland, is a city in the U.S. state of Ohio and the county seat of Cuyahoga County. Located in the northeastern part of the state, it is situated along the southern shore of Lake Erie, across the U.S. maritime border with Canada, northeast of Cincinnati, northeast of Columbus, and approximately west of Pennsylvania. The largest city on Lake Erie and one of the major cities of the Great Lakes region, Cleveland ranks as the 54th-largest city in the U.S. with a 2020 population of 372,624. The city anchors both the Greater Cleveland metropolitan statistical area (MSA) and the larger Cleveland–Akron–Canton combined statistical area (CSA). The CSA is the most populous in Ohio and the 17th largest in the country, with a population of 3.63 million in 2020, while the MSA ranks as 34th largest at 2.09 million. Cleveland was founded in 1796 near the mouth of the Cuyahoga River by General Moses Cleaveland, after whom the city was named ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ohio
Ohio () is a state in the Midwestern region of the United States. Of the fifty U.S. states, it is the 34th-largest by area, and with a population of nearly 11.8 million, is the seventh-most populous and tenth-most densely populated. The state's capital and largest city is Columbus, with the Columbus metro area, Greater Cincinnati, and Greater Cleveland being the largest metropolitan areas. Ohio is bordered by Lake Erie to the north, Pennsylvania to the east, West Virginia to the southeast, Kentucky to the southwest, Indiana to the west, and Michigan to the northwest. Ohio is historically known as the "Buckeye State" after its Ohio buckeye trees, and Ohioans are also known as "Buckeyes". Its state flag is the only non-rectangular flag of all the U.S. states. Ohio takes its name from the Ohio River, which in turn originated from the Seneca word ''ohiːyo'', meaning "good river", "great river", or "large creek". The state arose from the lands west of the Appalachian Mountai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Babbitt (alloy)
Babbitt metal or bearing metal is any of several alloys used for the bearing surface in a plain bearing. The original Babbitt alloy was invented in 1839 by Isaac Babbitt in Taunton, Massachusetts, United States. He disclosed one of his alloy recipes but kept others as trade secrets.Isaac Babbitt"Mode of making boxes for axles and gudgeons,"U.S. patent no. 1,252 (issued: July 17, 1839). Babbitt did not patent his alloy, although he does state its formulation: "The inner parts of the boxes are to be lined with any of the harder kinds of composition known under the names of britannia metal or pewter, of which block tin is the basis. An excellent compound for this purpose I have prepared by taking about 50 parts of tin, five of antimony, and one of copper, but I do not intend to confine myself to this particular composition." Other formulations were developed later.. Like other terms whose eponymous origin is long since deemphasized (such as ''diesel engine'' or ''eustachian tube''), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bearing (mechanical)
A bearing is a machine element that constrains relative motion to only the desired motion, and reduces friction between moving parts. The design of the bearing may, for example, provide for free linear movement of the moving part or for free rotation around a fixed axis; or, it may ''prevent'' a motion by controlling the vectors of normal forces that bear on the moving parts. Most bearings facilitate the desired motion by minimizing friction. Bearings are classified broadly according to the type of operation, the motions allowed, or to the directions of the loads (forces) applied to the parts. Rotary bearings hold rotating components such as shafts or axles within mechanical systems, and transfer axial and radial loads from the source of the load to the structure supporting it. The simplest form of bearing, the ''plain bearing'', consists of a shaft rotating in a hole. Lubrication is used to reduce friction. In the ''ball bearing'' and ''roller bearing'', to reduce sliding ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tony Vandervell
Guy Anthony "Tony" Vandervell (8 September 1898 – 10 March 1967) was a British industrialist, motor racing financier, and founder of the Vanwall Formula One racing team. Motorsport Vandervell was the son of Charles Vandervell, founder of CAV, later Lucas CAV. He made his fortune from the production of Babbitt ''Thin-Wall'' bearings by his company ''Vandervell Products'', under licence from the American Cleveland Graphite Bronze Company. W. A. Robotham first met him about 1934 when Rolls-Royce was having bearing problems on Bentleys. He said that Tony came across publicly as a "tough nut ... spoiling for a fight" and his marital problems attracted publicity, but he was a true friend who would always come to the aid of staff as well as a successful industrialist of the sort that Britain could use more of. However he seemed to have a "persecution complex" and fell out with some friends. Having raced both motorcycles and cars a number of times in his younger days, soon after the e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Arthur Robotham
William Arthur Robotham (26 November 1899 - 1980) was a Rolls-Royce executive involved in the development of Rolls-Royce cars, during World War II of tanks and tank engines, and post-war of Rolls-Royce and Bentley cars complete with bodies and then of industrial petrol and diesel engines. Early career William Arthur "Rm" Robotham was born at Shardlow, Derby, William Blews Robotham (1863-1943), his father, was a solicitor and twice Mayor of Derby. Robotham joined Rolls-Royce as a premium apprentice in 1919. In four years the apprentices went to every department of the factory; although they did not have to undertake any study at a technical college, Robotham went to night school two or three evenings a week studying mathematics and engineering drawing. They were paid 5 s per week. He had an "old and slow" Rover motorcycle, and in weekends played golf, tennis or went on Sunday motorcycle outings with other apprentices. Rolls-Royce cars In 1923 after finishing his apprenticesh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brush Development Company
Brush Development Company was a manufacturer of Audio equipment, audio, phonographic products and magnetic recording technologies located in Cleveland, Ohio. It was absorbed into Clevite in 1952. History The business was founded in 1919 by Alfred L. Williams as Brush Labs to develop products that utilized piezoelectric crystals. Associates spun off the Brush Development Company in 1930 with piezoelectric phonograph pickups as its main product.http://www.audiotools.com/dead_b.html Audiotools: Defunct Audio Manufacturers Later it began manufacturing Wire recording, wire recorders, microphones, and loudspeaker, speakers. During World War II, Vice President for Research Dr. Semi Joseph Begun was awarded a contract from the US National Defense Research Council for research on a substitute for stainless steel wire used in wire recorders by the military. Post-war, Brush manufactured a dictation recorder in 1946, and released the first USA built tape recorder in 1947 with the Brush Sound ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transistor
upright=1.4, gate (G), body (B), source (S) and drain (D) terminals. The gate is separated from the body by an insulating layer (pink). A transistor is a semiconductor device used to Electronic amplifier, amplify or electronic switch, switch electrical signals and electrical power, power. The transistor is one of the basic building blocks of modern electronics. It is composed of semiconductor material, usually with at least three terminals for connection to an electronic circuit. A voltage or current applied to one pair of the transistor's terminals controls the current through another pair of terminals. Because the controlled (output) power can be higher than the controlling (input) power, a transistor can amplify a signal. Some transistors are packaged individually, but many more are found embedded in integrated circuits. Austro-Hungarian physicist Julius Edgar Lilienfeld proposed the concept of a field-effect transistor in 1926, but it was not possible to actually constru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Herbert Mataré
Herbert Franz Mataré (22 September 1912 – 2 September 2011) was a German physicist. The focus of his research was the field of semiconductor research. His best-known work is the first functional European transistor, which he developed and patented together with Heinrich Welker in the vicinity of Paris in 1948, independent from the Bell Labs engineers who had developed the first transistor shortly before. The final 20 years of his life Mataré split time between his homes in Hückelhoven, Germany and Malibu, California. He was born in Aachen. Biography Mataré completed his studies in mathematics, chemistry, electrochemistry, nuclear physics, and solid-state physics at the Technical University of Aachen with degree "Diplom-Ingenieur" in Applied Physics. In addition, he studied mathematics, physics, and chemistry at the University of Geneva. In 1939 he joined the Telefunken research laboratory in Berlin. At that time it became obvious that the miniaturization of vacuum tubes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telecommunications
Telecommunication is the transmission of information by various types of technologies over wire, radio, optical, or other electromagnetic systems. It has its origin in the desire of humans for communication over a distance greater than that feasible with the human voice, but with a similar scale of expediency; thus, slow systems (such as postal mail) are excluded from the field. The transmission media in telecommunication have evolved through numerous stages of technology, from beacons and other visual signals (such as smoke signals, semaphore telegraphs, signal flags, and optical heliographs), to electrical cable and electromagnetic radiation, including light. Such transmission paths are often divided into communication channels, which afford the advantages of multiplexing multiple concurrent communication sessions. ''Telecommunication'' is often used in its plural form. Other examples of pre-modern long-distance communication included audio messages, such as coded drumb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ITT Inc
ITT Inc., formerly ITT Corporation, is an American worldwide manufacturing company based in Stamford, Connecticut. The company produces specialty components for the aerospace, transportation, energy and industrial markets. ITT's three businesses include Industrial Process, Motion Technologies, and Connect and Control Technologies. ITT has approximately 10,000 employees in more than 35 countries and serves customers in well over 100 countries. The company's long-standing brands include Goulds Pumps, Cannon connectors, KONI shock absorbers and Enidine energy absorption components. The company was founded in 1920 as International Telephone & Telegraph. During the 1960s and 1970s, under the leadership of CEO Harold Geneen, the company rose to prominence as the archetypal conglomerate, deriving its growth from hundreds of acquisitions in diversified industries. ITT divested its telecommunications assets in 1986. In 1995, the company sold off its hospitality portfolio, including S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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