Dual Coupling
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Dual Coupling
Different types of railroad rolling stock have different couplers depending on the purpose and type of equipment being used and its intended destination. European rolling stock tend to use buffers and chain couplers while American rolling stock uses a Janney coupler or "knuckle coupler". These are incompatible with each other, but where some railroads have obtained older, less expensive used rolling stock from different countries or regions, instead of having to standardize on one form of coupler, it may be useful to be able to use either type of coupler on a piece of rolling stock without having to remove anything. It is possible to mount both buffers and chain and knuckle couplers on the same car, provided that the knuckle can swing out of the way. Alternatively, either a lug to hold the chain is cast in the body of the coupler or a chain is mounted on top of the coupler. This is also done with an SA3 coupler built by SAB WABCO. Locomotives and some freight cars of the Indian R ...
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British Railways Mark 2
The Mark 2 family of railway carriages are British Rail's second design of carriages. They were built by British Rail workshops (from 1969 British Rail Engineering Limited (BREL)) between 1964 and 1975. They were of steel construction. Introduction File:BR Mk2 prototype.jpg, Prototype Mk2 13252 at the Mid-Norfolk Railway in April 2009 File:Mk 2A TSO 5278 'Melisande' at Cheltenham Spa.JPG, Mark 2A Tourist Standard Open (TSO) 5278 "Melisande" at Cheltenham Spa on 18 September 2004 on a charter service to Swindon File:5174 NLR 260108 d.adkins.jpg, Mark 2 coaches 5174, 5132 and 9102 at the Northampton & Lamport Railway on 26 January 2008 File:Mk 2F TSO 6035 at Carlisle.JPG, Arriva Trains Northern Mark 2F TSO 6035 at on 27 August 2004 File:British Rail Mk 2b, Cheriton, 1994.jpg, Mark 2C TSO 5541 at Cheriton in BR blue/grey livery in 1994 The Mark 2 has a semi-integral construction, giving it more strength than a Mark 1 in the event of an accident. A key driver of the changed con ...
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Bell Link-and-pin Coupler
A coupling (or a coupler) is a mechanism typically placed at each end of a railway vehicle that connects them together to form a train. A variety of coupler types have been developed over the course of railway history. Key issues in their design include strength, reliability, ease of making connections and operator safety. The equipment that connects the couplings to the vehicles is the draft gear or draw gear and these must absorb the stresses of coupling and train acceleration. Nomenclature Compatible and similar couplings or couplers are frequently referred to using widely differing make, brand, or regional names, or nicknames, which can make describing standard or typical designs confusing. Dimensions and ratings noted in these articles are usually of nominal or typical components and systems, though standards and practices also vary widely with railway, region, and era. Buffers and chain The basic type of coupling on railways following the British tradition is the bu ...
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Barrier Vehicle
A barrier vehicle (BV), barrier wagon, match wagon or translator coach is used to convert between non-matching railway coupler types. This allows locomotives to pull railway vehicles or parts of a train with a different type of coupler. A match wagon has an identical dual coupling at both ends. Use They are often found on empty coaching stock moves where freight locomotives need to transport coaching stock fitted with Scharfenberg couplers and other automatic couplers. The use of barrier coaches has evolved with a general move from conventional passenger trains consisting of locomotive-hauled coaches, to trains consisting of multiple units. Liveries These vehicles tend to be neutrally liveried or in some cases are painted with the livery of a particular rolling stock company. For example, Porterbrook use corporately-liveried examples for delivery of rolling stock and for transfers for refurbishment and maintenance. Gallery File:Bounds Green Carriages 3.JPG, Bounds Green ...
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Knuckle Coupler
Janney couplers are a semi-automatic form of railway coupling that allow rail cars and locomotives to be securely linked together without rail workers having to get between the vehicles. They are also known as American, AAR, APT, ARA, MCB, knuckle, Buckeye, tightlock (in the UK), Henricot (in Belgium) or Centre Buffer Couplers. Background Janney couplers were first patented in 1873 by Eli H. Janney (). Andrew Jackson Beard was amongst various inventors that made a multitude of improvements to the knuckle coupler; Beard's patents were granted 23 November 1897, which then sold for approximately $50,000, and granted 16 May 1899. In the UK, several versions of Janney couplers are fitted to a limited number of coaches, multiple units, wagons and locomotives. Janney Type E, Type F Interlock, and Type H tightlock couplings are compatible subtypes, each intended for specific rail car types. Prior to the formation of the Association of American Railroads (AAR) these were known as ...
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1906 San Francisco Earthquake
At 05:12 Pacific Standard Time on Wednesday, April 18, 1906, the coast of Northern California was struck by a major earthquake with an estimated moment magnitude of 7.9 and a maximum Mercalli intensity of XI (''Extreme''). High-intensity shaking was felt from Eureka on the North Coast to the Salinas Valley, an agricultural region to the south of the San Francisco Bay Area. Devastating fires soon broke out in San Francisco and lasted for several days. More than 3,000 people died, and over 80% of the city was destroyed. The events are remembered as one of the worst and deadliest earthquakes in the history of the United States. The death toll remains the greatest loss of life from a natural disaster in California's history and high on the lists of American disasters. Tectonic setting The San Andreas Fault is a continental transform fault that forms part of the tectonic boundary between the Pacific Plate and the North American Plate. The strike-slip fault is characterize ...
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Scharfenberg Coupler
The Scharfenberg coupler (german: Scharfenbergkupplung, 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 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. . Working principles The face of the Scharfenberg coupler has a protruding cone and a matching cup. Inside the cone there is a rigid metal hoop connected to a revolving, spring-loaded metal disk with a ...
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Centerline
Center line, centre line or centerline may refer to: Sports * Center line, marked in red on an ice hockey rink * Centre line (football), a set of positions on an Australian rules football field * Centerline, a line that separates the service courts in pickleball Transportation * Center line, a road surface marking * Center line, a taxiway marking * Center line, a runway marking * CenterLine (OCTA), failed light-rail project in Orange County, California, U.S. * Centerline (nautical), the dividing line between port and starboard sides of a ship or boat * Centreline, a bus service in Manchester, England, later rebranded Metroshuttle Other uses * Center Line, Michigan, a place in the United States ** Center Line High School * Centre-Line Party, former name of the Australian Democrats political party * Centerline, an engineering drawing symbol stylized by an overlapping C and L (℄) See also * * * * *Central line (other) Central line or Central Line may refer to: Rai ...
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JNR Class EF81
The Class EF81 is a six-axle Bo-Bo-Bo wheel arrangement multi-voltage AC/ DC electric locomotive type operated on passenger and freight services in Japan since 1968. , 44 locomotives remained in service, operated by JR Freight, JR East, and JR West. Variants * EF81-0: Numbers EF81 1 – 152, built 1968–1979 * EF81-300: Numbers EF81 301 – 304, built 1973–1975 * EF81-400: Numbers EF81 401 – 414 * EF81-450: Numbers EF81 451 – 455, built 1991–1992 * EF81-500: Numbers EF81 501 – 503, built 1989 * EF81-600: Former EF81-0 locomotives renumbered by JR Freight from May 2012 EF81-0 152 locomotives were built from 1968 to 1979 in three batches and numbered EF81 1 to EF81 152. 14 EF81-0 locomotives were later modified to become Class EF81-400. The prototype locomotive, EF81 1, was built by Hitachi, and delivered in 1968. Locomotives EF81 137 onward were built with sun-visor plates above the cab windows. These were also subsequently retro-fitted to locomotives EF81 133 to 1 ...
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Railway Coupling
A coupling (or a coupler) is a mechanism typically placed at each end of a rolling stock, railway vehicle that connects them together to form a train. A variety of coupler types have been developed over the course of railway history. Key issues in their design include strength, reliability, ease of making connections and operator safety. The equipment that connects the couplings to the vehicles is the draft gear or draw gear and these must absorb the stresses of coupling and train acceleration. Nomenclature Compatible and similar couplings or couplers are frequently referred to using widely differing make, brand, or regional names, or nicknames, which can make describing standard or typical designs confusing. Dimensions and ratings noted in these articles are usually of nominal or typical components and systems, though standards and practices also vary widely with railway, region, and era. Buffers and chain The basic type of coupling on railways following the British trad ...
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SBB-CFF-FFS Re 420
The Re 420, originally (and still widely called) Re 4/4II, series are the most common electric locomotives of the Swiss Federal Railways. They are used for passenger services throughout Switzerland alone or in pairs. For freight services, they are sometimes paired with the Re 620, especially in mountainous regions. That pairing is referred to by the term Re 10/10. The Re 430, originally known as the Re 4/4III, are a derivative of the Re 420 modified for higher traction but lower speed. The Re 420 locomotives were produced over a period of 21 years, from 1964 to 1985. Re 4/4III (Re 430 SBB/Re 436 Private) Subseries: When Südostbahn had the opportunity to buy one of the first batch of 50 Re 4/4II locomotives before delivery, it had the gear modified for higher traction and lower speed for the steep routes of the SOB. This locomotive was delivered as number 41 (and is now SBB 11350). Based on the SOB experience, the SBB ordered a batch of 20 Re 4/4III in 1969 for use on the Gott ...
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