1.
Japanese National Railways
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Japanese National Railways, abbreviated Kokutetsu or JNR, was the body which operated the national railway network of Japan from 1949 to 1987. As of June 1,1949, the date of establishment of JNR and this figure expanded to 21,421.1 km in 1981, but later reduced to 19,633.6 km as of March 31,1987, the last day of JNR. JNR operated both passenger and freight services, Shinkansen, the worlds first high-speed railway was debuted by JNR in 1964. Unlike railway operation, JNR Bus was not superior to local bus operators. The JR Bus companies are the successors of the bus operation of JNR, a number of unions represented workers at JNR, including the National Railway Workers Union, the National Railway Locomotive Engineers Union, and Doro-Chiba, a break-away group from Doro. Later, the Ministry of Railways and the Ministry of Transportation, the ministries used the name Japanese Government Railways to refer their network in English. During World War II, many JGR lines were dismantled to supply steel for the war effort, on June 1,1949 by a directive of the U. S. General HQ in Tokyo, JGR was reorganized into Japanese National Railways, JNR enjoyed many successes, including the October 1,1964 inauguration of high-speed Shinkansen service along the Tōkaidō Shinkansen line. However, JNR was not a corporation, its accounting was independent from the national budget. Rural sections without enough passengers began to press its management, pulling it further and further into debt, in 1983, JNR started to close its unprofitable 83 local lines. By 1987, JNRs debt was over ¥27 trillion and the company was spending ¥147 for every ¥100 earned. By an act of the Diet of Japan, on April 1,1987 JNR was privatized and divided into seven companies, six passenger and one freight. Long-term liabilities of JNR were taken over by the JNR Settlement Corporation and that corporation was subsequently disbanded on October 22,1998, and its remaining debts were transferred to the national budgets general accounting. By this time the debt has risen to ¥30 trillion, many lawsuits and labor commission cases were filed over the decades from the privatization in 1987. Kokuro and the National Railway Locomotive Engineers Union, both prominent Japanese railway unions, represented a number of the JNR workers, lists of workers to be employed by the new organizations were drawn up by JNR and given to the JR companies. There was substantial pressure on members to leave their unions, and within a year. Workers who had supported the privatization, or those who left Kokuro, were hired at substantially higher rates than Kokuro members. Around 7,600 workers were transferred in this way, and around 2,000 of them were hired by JR firms and this period ended in April 1990, and 1,047 were dismissed
2.
East Japan Railway Company
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East Japan Railway Company is a major passenger railway company in Japan and one of the seven Japan Railways Group companies. The company name is abbreviated as JR-EAST or JR East in English. The companys headquarters are in Yoyogi, Shibuya, Tokyo, JR East was incorporated on 1 April 1987 after being spun off from the government-run Japanese National Railways. Following the breakup, JR East ran the operations on former JNR lines in the Greater Tokyo Area, the Tohoku region and its railway lines primarily serve Kanto and Tohoku regions, along with adjacent areas in Koshinetsu region and Shizuoka prefectures. JR East operates all of the Shinkansen, high-speed rail lines and these lines have sections inside the Tokyo Suburban Area designated by JR East. This does not necessarily mean that the lines are fully inside the Greater Tokyo Area, JR East aims to reduce its carbon emissions by half, as measured over the period 1990-2030. This would be achieved by increasing the efficiency of trains and company-owned thermal power stations, the Tokyo Metropolitan Police Department has stated that JR Easts official union is a front for an organized crime syndicate called the Japan Revolutionary Communist League. An investigation of this is ongoing, the East Japan Railway Culture Foundation is a non-profit organization established by JR East for the purpose of developing a richer railway culture. The Railway Museum in Saitama is operated by the foundation, EJRC has bid for the London Midland franchise in the United Kingdom. Winners will be announced on June 2017 and will start operating on October 2017, East Japan Railway Company Web Site JR East official apology for Inaho No.14 accident on 25 December 2005 Company history books. Wiki collection of works on East Japan Railway Company
3.
Resistor
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A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element. In electronic circuits, resistors are used to reduce current flow, adjust signal levels, to divide voltages, bias active elements, and terminate transmission lines, among other uses. High-power resistors that can dissipate many watts of power as heat may be used as part of motor controls, in power distribution systems. Fixed resistors have resistances that only slightly with temperature, time or operating voltage. Variable resistors can be used to adjust circuit elements, or as sensing devices for heat, light, humidity, force, Resistors are common elements of electrical networks and electronic circuits and are ubiquitous in electronic equipment. Practical resistors as discrete components can be composed of various compounds, Resistors are also implemented within integrated circuits. The electrical function of a resistor is specified by its resistance, the nominal value of the resistance falls within the manufacturing tolerance, indicated on the component. Two typical schematic diagram symbols are as follows, The notation to state a resistors value in a circuit diagram varies, one common scheme is the letter and digit code for resistance values following IEC60062. It avoids using a separator and replaces the decimal separator with a letter loosely associated with SI prefixes corresponding with the parts resistance. For example, 8K2 as part marking code, in a diagram or in a bill of materials indicates a resistor value of 8.2 kΩ. Additional zeros imply a tighter tolerance, for example 15M0 for three significant digits, when the value can be expressed without the need for a prefix, an R is used instead of the decimal separator. For example, 1R2 indicates 1.2 Ω, and 18R indicates 18 Ω, for example, if a 300 ohm resistor is attached across the terminals of a 12 volt battery, then a current of 12 /300 =0.04 amperes flows through that resistor. Practical resistors also have some inductance and capacitance which affect the relation between voltage and current in alternating current circuits, the ohm is the SI unit of electrical resistance, named after Georg Simon Ohm. An ohm is equivalent to a volt per ampere, since resistors are specified and manufactured over a very large range of values, the derived units of milliohm, kilohm, and megohm are also in common usage. The total resistance of resistors connected in series is the sum of their resistance values. R e q = R1 + R2 + ⋯ + R n, the total resistance of resistors connected in parallel is the reciprocal of the sum of the reciprocals of the individual resistors. 1 R e q =1 R1 +1 R2 + ⋯ +1 R n. For example, a 10 ohm resistor connected in parallel with a 5 ohm resistor, a resistor network that is a combination of parallel and series connections can be broken up into smaller parts that are either one or the other
4.
Railway electrification system
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A railway electrification system supplies electric power to railway trains and trams without an on-board prime mover or local fuel supply. Electrification has many advantages but requires significant capital expenditure, selection of an electrification system is based on economics of energy supply, maintenance, and capital cost compared to the revenue obtained for freight and passenger traffic. Different systems are used for urban and intercity areas, some electric locomotives can switch to different supply voltages to allow flexibility in operation, Electric railways use electric locomotives to haul passengers or freight in separate cars or electric multiple units, passenger cars with their own motors. Electricity is typically generated in large and relatively efficient generating stations, transmitted to the railway network, some electric railways have their own dedicated generating stations and transmission lines but most purchase power from an electric utility. The railway usually provides its own lines, switches and transformers. Power is supplied to moving trains with a continuous conductor running along the track usually takes one of two forms. The first is a line or catenary wire suspended from poles or towers along the track or from structure or tunnel ceilings. Locomotives or multiple units pick up power from the wire with pantographs on their roofs that press a conductive strip against it with a spring or air pressure. Examples are described later in this article, the second is a third rail mounted at track level and contacted by a sliding pickup shoe. Both overhead wire and third-rail systems usually use the rails as the return conductor. In comparison to the alternative, the diesel engine, electric railways offer substantially better energy efficiency, lower emissions. Electric locomotives are usually quieter, more powerful, and more responsive and they have no local emissions, an important advantage in tunnels and urban areas. Different regions may use different supply voltages and frequencies, complicating through service, the limited clearances available under catenaries may preclude efficient double-stack container service. Possible lethal electric current due to risk of contact with high-voltage contact wires, overhead wires are safer than third rails, but they are often considered unsightly. These are independent of the system used, so that. The permissible range of voltages allowed for the voltages is as stated in standards BS EN50163. These take into account the number of trains drawing current and their distance from the substation, railways must operate at variable speeds. Until the mid 1980s this was only practical with the brush-type DC motor, since such conversion was not well developed in the late 19th century and early 20th century, most early electrified railways used DC and many still do, particularly rapid transit and trams
5.
Current collector
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Those for overhead wires are roof-mounted devices, those for third rails are mounted on the bogies. Typically, they have one or more spring-loaded arms that permit the working engagement with the rail or overhead wire, the collector arm pushes the contact shoe against the contact wire or rail. As the vehicle moves, the shoe slides along the wire or rail to draw the electricity needed to run the vehicles motor. The current collector arms are electrically conductive but mounted insulated on the vehicles roof, an insulated cable connects the collector with the switch, transformer or motor. The steel rails of the act as the electrical return. Electric vehicles that collect their current from an overhead line system use different forms of one- or two-arm pantograph collectors, the current collection device presses against the underside of the lowest wire of an overhead line system, which is called a contact wire. Most overhead supply systems are either DC or single phase AC, three phase AC systems use a pair of overhead wires, and paired trolley poles. Electric railways with third rails, or fourth rails, in tunnels carry collector shoes projecting laterally, or vertically, the contact shoe may slide on top of the third rail, on the bottom or on the side. The side running contact shoe is used against the bars on rubber-tired metros. A vertical contact shoe is used on power supply systems, stud contact systems. A pair of shoes was used on underground current collection systems. The contact shoe on a contact system is called a ski collector. The ski collector moves vertically to accommodate variations in the height of the studs. Contact shoes may also be used on overhead conductor rails, on bars or on trolley wires. Most railways use three rails, while the London Underground uses four rails
6.
Railway coupling
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A coupling is a mechanism for connecting rolling stock in a train. The design of the coupler is standard, and is almost as important as the gauge, since flexibility. The equipment that connects the couplings to the stock is known as the draft gear. The different types of coupling do not always have formal or official names and these couplings followed earlier tramway practice but were made more regular. The vehicles are coupled by hand using a hook and links with a turnbuckle that draws the vehicles together, in Britain, this is called a screw coupling. Vehicles have buffers, one at each corner on the ends and this arrangement limits the slack in trains and lessens shocks. The earliest buffers were fixed extensions of the frames. This coupling is still the standard in European countries, the link-and-pin coupling was the original style of coupling used on North American railways. After most railroads converted to semi-automatic Janney couplers, the link-and-pin survived on forestry railways, while simple in principle, the system suffered from a lack of standardisation regarding size and height of the links, and the size and height of the pockets. The link-and-pin coupler consisted of a body that received an oblong link. During coupling, a worker had to stand between the cars as they came together and guide the link into the coupler pocket. Once the cars were joined, the employee inserted a pin into a hole a few inches from the end of the tube to hold the link in place. This procedure was exceptionally dangerous and many brakemen lost fingers or entire hands when they did not get out of the way of the coupler pockets in time. Many more were killed as a result of being crushed between cars or dragged under cars that were coupled too quickly, brakemen were issued with heavy clubs that could be used to hold the link in position, but many brakemen would not use the club, and risked injury. The link-and-pin coupler proved unsatisfactory because, It made a connection between the cars, with too much slack action. There was no design, and train crews often spent hours trying to match pins. Crew members had to go between moving cars during coupling, and were injured and sometimes killed. The links and pins were often pilfered due to their value as scrap metal, john H. White suggests that the railroads considered this to be more important than the safety issue at the time
7.
Multiple working
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Multiple working is a term used on the UK rail network to describe the practice of having more than one diesel or electric locomotive hauling a train under the control of one driver. Multiple Working is the used in the UK where more than one operational diesel or electric locomotive are coupled together under the control of one driver. The term can also apply when diesel or electric multiple unit trains are coupled together, in tandem is the term usually used in the UK when more than one diesel or electric locomotive are hauling a single train and under the control of a driver on each locomotive. If the front locomotive of a pair in multiple has failed the driver can control the rear locomotive for as long as air. In the early days of locomotives, locomotives worked within their class. Locomotives from different manufacturers had varying methods of controlling engines or braking systems, if a train required more than one locomotive, an additional driver was needed, at extra expense. Since then, locomotives have been built to work with other locomotives in the code or system. Similar systems are assigned a code, which is normally indicated on the front of the locomotive. Early diesels were also fitted with communicating doors in the nose allowed the secondman to access the train heating boiler of the rearmost locomotive. The doors actually saw little use and, as they frequently caused draughts in the cab, first-generation diesel multiple units had the additional problem of differing types of transmission. For instance, a Class 127 unit could be required to work in multiple with a Class 112 unit. For this reason, the selector on the Class 127 was fitted with positions marked D,3,2,1 to change the gears when working in formation with vehicles with mechanical transmission. Later units, post-privatisation ones in particular, saw a number of different, franchise changes and stock reallocation means that many train operating companies use fleets with a number of incompatible multiple working systems. British Railways Locomotives and Multiple Units including Preserved Locomotives 1977, multiple-unit train control Control Car Remote Control Locomotive
8.
Track gauge
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In rail transport, track gauge is the spacing of the rails on a railway track and is measured between the inner faces of the load-bearing rails. All vehicles on a network must have running gear that is compatible with the track gauge, as the dominant parameter determining interoperability, it is still frequently used as a descriptor of a route or network. There is a distinction between the gauge and actual gauge at some locality, due to divergence of track components from the nominal. Railway engineers use a device, like a caliper, to measure the actual gauge, the nominal track gauge is the distance between the inner faces of the rails. In current practice, it is specified at a distance below the rail head as the inner faces of the rail head are not necessarily vertical. In some cases in the earliest days of railways, the company saw itself as an infrastructure provider only. Colloquially the wagons might be referred to as four-foot gauge wagons, say and this nominal value does not equate to the flange spacing, as some freedom is allowed for. An infrastructure manager might specify new or replacement track components at a variation from the nominal gauge for pragmatic reasons. Track is defined in old Imperial units or in universally accepted metric units or SI units, Imperial units were established in United Kingdom by The Weights and Measures Act of 1824. In addition, there are constraints, such as the load-carrying capacity of axles. Narrow gauge railways usually cost less to build because they are lighter in construction, using smaller cars and locomotives, as well as smaller bridges, smaller tunnels. Narrow gauge is often used in mountainous terrain, where the savings in civil engineering work can be substantial. Broader gauge railways are generally expensive to build and require wider curves. There is no single perfect gauge, because different environments and economic considerations come into play, a narrow gauge is superior if ones main considerations are economy and tight curvature. For direct, unimpeded routes with high traffic, a broad gauge may be preferable, the Standard, Russian, and 46 gauges are designed to strike a reasonable balance between these factors. In addition to the general trade-off, another important factor is standardization, once a standard has been chosen, and equipment, infrastructure, and training calibrated to that standard, conversion becomes difficult and expensive. This also makes it easier to adopt an existing standard than to invent a new one and this is true of many technologies, including railroad gauges. The reduced cost, greater efficiency, and greater economic opportunity offered by the use of a common standard explains why a number of gauges predominate worldwide
9.
3 ft 6 in gauge railways
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Railways with a track gauge of 3 ft 6 in/1,067 mm were first constructed as horse-drawn wagonways. From the mid-nineteenth century, the 3 ft 6 in gauge became widespread in the British Empire, there are approximately 112,000 kilometres of 1,067 mm gauge track in the world. 1795 One of the first railways to use 3 ft 6 in gauge was the Little Eaton Gangway in England, other 3 ft 6 in gauge wagonways in England and Wales were also built in the early nineteenth century. 1862 In 1862 the Norwegian engineer Carl Abraham Pihl constructed the first 3 ft 6 in gauge railway in Norway,1865 In 1865 the Queensland Railways were constructed. Its 3 ft 6 in gauge was promoted by the Irish engineer Abraham Fitzgibbon,1868 In 1868 Charles Fox asks civil engineer Edmund Wragge to survey a 3 ft 6 in railway in Costa Rica. 1871 In 1871 the Canadian Toronto, Grey and Bruce Railway,1872 In January 1872 Robert Fairlie advocated the use of 3 ft 6 in gauge in his book Railways Or No Railways, Narrow Gauge, Economy with Efficiency v. Broad Gauge, Costliness with Extravagance. 1872 also saw the opening of the first 3 ft 6 in gauge railway in Japan,1873 On 1 January 1873, the first 3 ft 6 in gauge railway was opened in New Zealand, constructed by the British firm John Brogden and Sons. Earlier built 4 ft 8 1⁄2 in and broad gauge railways were converted to the narrower gauge. Also in 1873 the Cape Colony adopted the 3 ft 6 in gauge, after conducting several studies in southern Europe, the Molteno Government selected the gauge as being the most economically suited for traversing steep mountain ranges. Beginning in 1873, under supervision of Railway engineer of the Colony William Brounger, the Cape Government Railways rapidly expanded and the gauge became the standard for southern Africa. 1876 Natal also converted its short 10 kilometres long Durban network from 4 ft 8 1⁄2 in broad gauge prior to commencing with construction of a network across the colony in 1876. Other new railways in Southern Africa, notably Mozambique, Bechuanaland, after 1876 In the late nineteenth and early twentieth century numerous 3 ft 6 in gauge tram systems were built in the United Kingdom and the Netherlands. In Sweden, the gauge was nicknamed Blekinge gauge, as most of the railways in the province of Blekinge had this gauge. An alternate name for this gauge, Cape gauge, is named after the Cape Colony in what is now South Africa, the term Cape Gauge is used in other languages, such as the Dutch kaapspoor, German Kapspur, Norwegian kappspor and French voie cape. After metrication in the 1960s, the gauge was referred to in official South African Railways publications as 1065 mm instead of 1067 mm, the gauge is sometimes referred to as CAP gauge, after C. A. The gauge name Colonial Gauge was used in New Zealand, in Australia the imperial term 3 foot 6 inch is used. In some Australian publications the term medium gauge is also used, in Japan 1,067 mm gauge is referred to as kyōki, which directly translates as narrow gauge. It is defined in metric units, Cape Government Railways Heritage railway List of track gauges Norwegian gauge controversy South African Trains – A Pictorial Encyclopaedia Why Did Japan Choose the 36 Narrow Gauge
