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Siemens–Duewag U2
The Siemens–Duewag U2 is a type of light rail vehicle (LRV), built by consortium of Siemens, Duewag and Wegmann & Co built between 1968 and 1990. The design was based on the prototype U1 tram built in 1965 for the Frankfurt U-Bahn. The U2 was also designed for and used by the Frankfurt U-Bahn. The name is derived from the class identifier given to the cars in the Frankfurt. The U2 was later exported to North America and adapted for use on light rail systems in Edmonton, Calgary, and San Diego, during a period in which few purpose-built LRVs were being manufactured. History U1 prototype In the early 1960s, Duewag developed and manufactured a prototype of a new tram for the Frankfurt U-Bahn. The design was largely based on the previously delivered trams, but added electronic controls that allowed several railcars to be coupled together to form trains, and a floor height of that made it possible to board from platforms with a height of without having to add a folding step previ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siemens Mobility
Siemens Mobility GmbH is a division of Siemens. With its global headquarters in Munich, Siemens Mobility has four core business units: Mobility Management, dedicated to rail technology and intelligent traffic systems, Railway Electrification, Rolling Stock, and Customer Services. History Innovations from the late 19th century, such as the world's first electric train, when Siemens & Halske unveiled a train in which power was supplied through the rails, and the world's first electric tram, with the implementation of 2.5-kilometer-long electric tramway located in Berlin, built at the company's own expense, cemented the use of electric power in transportation systems. In the following years, inventions such as the first electric trolleybus, mine locomotives, and the first underground railway in continental Europe (in Budapest), set the path from trams and subways to today's high-speed trains. Siemens, alongside ThyssenKrupp and Transrapid International, was part of the Germa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pantograph (transport)
A pantograph (or "pan" or "panto") is an apparatus mounted on the roof of an electric train, tram or trolley buses to collect power through contact with an overhead line. The term stems from the resemblance of some styles to the mechanical pantographs used for copying handwriting and drawings. The pantograph is a common type of current collector; typically, a single or double wire is used, with the return current running through the Rail profile, rails. Other types of current collectors include the bow collector and the trolley pole. Invention The pantograph, with a low-friction, replaceable graphite contact strip or "current collector, shoe" to minimise lateral stress on the contact wire, first appeared in the late 19th century. Early versions include the bow collector, invented in 1889 by Walter Reichel, chief engineer at Siemens & Halske in Germany, and a flat slide-pantograph first used in 1895 by the Baltimore and Ohio Railroad. The familiar diamond-shaped roller ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metro Magazine
''Metro Magazine'' is a trade magazine for bus and rail transit and motorcoach operators, published in the United States since 1904, taking its current name in 1975.Di Giacomo, Frank. "100 years of deadlines". ''Metro Magazine'', July 2004, p. 4. It is published monthly, except for July and December, by Bobit Business Media. The magazine is headquartered in Torrance, California Torrance is a coastal city in the Los Angeles metropolitan area located in southwestern Los Angeles County, California, United States. The city is part of what is known as the South Bay (Los Angeles County), South Bay region of the metropolitan .... History First published in 1904 as ''Electric Traction Weekly'', the magazine became a monthly in 1912 and changed its name to the ''Electric Traction and Bus Journal'' in 1932. That name was relatively short-lived, being replaced by ''Mass Transportation'' in 1935. Its publisher at that time was Kenfield-Davis Publishing Company. In 1959, new owner ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Diego Metropolitan Transit System
The San Diego Metropolitan Transit System (MTS) is a public transit service provider for San Diego County, California. The agency operates a transit system that includes the San Diego MTS bus system, San Diego Trolley, and Rapid (San Diego), Rapid (bus rapid transit). MTS also controls the San Diego and Arizona Eastern Railway, San Diego and Arizona Eastern (SD&AE) freight railway and regulates Taxi, taxicabs, Share taxi, jitneys, and other private for-hire passenger transportation services. MTS is one of the oldest transit systems in Southern California, with predecessors dating back as early as the 1880s. The current agency started operations in 1976 as the San Diego Metropolitan Transit Development Board (MTDB) and changed to its current name in 2005. MTS works closely with the North County Transit District (NCTD), which operates public transit services in North County (San Diego area), Northern San Diego County, and the San Diego Association of Governments (SANDAG), which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calgary Transit
Calgary Transit is the public transit agency which is owned and operated by the city of Calgary, Alberta, Canada. In 2019, an estimated 106.5 million passengers boarded approximately 1,155 Calgary Transit vehicles. It operates light metro (LRT), urban tramway (in the downtown free-fare zone), bus rapid transit (BRT), para-transit, and regular bus services. In , the system had a ridership of , or about per weekday as of . History What would eventually become Calgary Transit began as the Calgary Street Railway on July 5, 1909, with twelve electric streetcars serving what was at the time a city of 30,000. This streetcar service expanded throughout the next thirty years (including the Depression) until 1946, when the company was renamed to Calgary Transit System as electric trolleybus vehicles began replacing the local streetcars. Eventually the electric trolley lines were phased out together — to be replaced by diesel buses. In 1972, CTS assumed its current name of Calgary ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wegmann & Co
The form coach factory of Wegmann & Co. was founded in 1882 in Kassel (then ''Cassel'') by ''Kommerzienrat'', Peter Wegmann, and Richard Harkort as the Casseler Waggonfabriken von Wegmann, Harkort & Co. In 1886 it changed its name to Wegmann & Co. In 1912 the company was taken over by engineer, August Bode, and businessman, Conrad Köhler. Towards the end of the First World War, in 1917, the firm was given an order for the construction of the first German tank, the K-Wagen. In the 1920s the construction of railway wagons was the focus of the company. The firm became known in the 1930s as the manufacturer of passenger coaches for the Henschel-Wegmann train. In 1936 Wegmann & Co supplied the prototypes of the so-called ''Schürzenwagen''. In addition, Wegmann built some of the state coaches of the special train for the Führer, which were used by Adolf Hitler. In 1925 the ''4/20 PS'' sports car was displayed at the German Automobile Exhibition in Berlin. The vehicle was design ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Light Rail
Light rail (or light rail transit, abbreviated to LRT) is a form of passenger urban rail transit that uses rolling stock derived from tram technology National Conference of the Transportation Research Board while also having some features from heavy rapid transit. The term was coined in 1972 in the United States as an English equivalent for the German word ''Stadtbahn'', meaning "city railway". From: 9th National Light Rail Transit Conference Different definitions exist in some countries, but in the United States, light rail operates primarily along exclusive Right_of_way#Rail_right_of_way, rights-of-way and uses either individual tramcars or multiple units coupled together, with a lower capacity and speed than a long heavy rail passenger train or rapid transit system. Narrowly defined, light rail transit uses rolling stock that is similar to that of a traditional tram, while operating at a higher capacity and speed, often on an exclusive right-of-way. In broader usage, light ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Foam
Foams are two-phase materials science, material systems where a gas is dispersed in a second, non-gaseous material, specifically, in which gas cells are enclosed by a distinct liquid or solid material. Note, this source focuses only on liquid foams. Note, this source also focuses on liquid foams. Foam "may contain more or less liquid [or solid] according to circumstances", although in the case of gas-liquid foams, the gas occupies most of the volume. In most foams, the volume of gas is large, with thin films of liquid or solid separating the regions of gas. Etymology The word derives from the Old High German, medieval German and otherwise obsolete ''veim'', in reference to the "frothy head forming in the glass once the beer has been freshly poured" (cf. ''ausgefeimt''). Structure A foam is, in many cases, a multi-scale system. One scale is the bubble: materials science, material foams are typically randomness, disordered and have a variety of bubble sizes. At larger siz ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neoprene
Neoprene (also polychloroprene) is a family of synthetic rubbers that are produced by polymerization of chloroprene.Werner Obrecht, Jean-Pierre Lambert, Michael Happ, Christiane Oppenheimer-Stix, John Dunn and Ralf Krüger "Rubber, 4. Emulsion Rubbers" in Ullmann's Encyclopedia of Industrial Chemistry, 2012, Wiley-VCH, Weinheim. Neoprene exhibits good chemical stability and maintains flexibility over a wide temperature range. Neoprene is sold either as solid rubber or in latex form and is used in a wide variety of commercial applications, such as laptop sleeves, orthopaedic braces (wrist, knee, etc.), electrical insulation, medical gloves, liquid and sheet-applied elastomeric membranes or flashings, and Motor vehicle, automotive fan belt (mechanical), belts. Production Neoprene is produced by free-radical polymerization of chloroprene. In commercial production, this polymer is prepared by Emulsion_polymerization, free radical emulsion polymerization. Polymerization is initiated us ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Upholstery
Upholstery is the work of providing furniture, especially seats, with padding, springs, webbing, and fabric or leather covers. The word also refers to the materials used to upholster something. ''Upholstery'' comes from the Middle English word ''upholder'', which referred to an artisan who makes fabric furnishings. The term is equally applicable to domestic, automobile, airplane and boat furniture, and can be applied to mattresses, particularly the upper layers, though these often differ significantly in design. A person who works with upholstery is called an ''upholsterer''. An apprentice upholsterer is sometimes called an ''outsider'' or ''trimmer''. Traditional upholstery uses materials like coil springs (post-1850), animal hair (horse, hog and cow), coir, straw and hay, hessians, linen scrims, wadding, etc., and is done by hand, building each layer up. In contrast, today's upholsterers employ synthetic materials like dacron and vinyl, serpentine springs, and so on. H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scharfenberg Coupler
The Scharfenberg coupler (, abbreviated ''Schaku'') is a commonly used type of fully automatic railway coupling. Designed in 1903 by Karl Scharfenberg in Königsberg, Germany (today Kaliningrad, Russia), the coupler has gradually spread from transit trains to regular passenger service trains, although outside Europe its use is generally restricted to mass transit systems. The ''Schaku'' is superior in many ways to the Janney coupler, AAR (Janney/knuckle) coupler because it also automates electrical and pneumatic connections and disconnections. However, there is no standard for the placement of these electro-pneumatic connections. Some rail operators have placed them on the sides while others have placed them either below or above the mechanical portion of the coupler. Scharfenberg as a technical design principle and brand name Scharfenberg and the abbreviation Schaku are registered trademarks of Voith Patent GmbH. For this reason, only couplings from Voith can use this name. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
