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British Rail Class 304
The British Rail Class 304 (Originally classed as AM4) were AC electric multiple units designed and produced at British Rail's (BR) Wolverton Works. The Class 304 was produced for BR's new electric suburban services, enabled by the first phases of the West Coast Main Line electrification between Crewe and Manchester/Liverpool/ Rugby. The units conformed to the 1959-design for alternating current (AC) electrical multiple units, and were externally very similar to the Class 305, Class 308 and the 1,200 V direct current (DC) Class 504 units. Following their introduction during the early 1960s, the Class 304 could be found in operation across the southern and Midland section of the West Coast Main Line. Midway through their service life, the units were reclassified as the Class 304 under the TOPS numbering system. The fleet was withdrawn from service during the early to mid 90s, largely due to the arrival of cascaded rolling stock such as the Class 305/2 units and new Cla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Rail
British Railways (BR), which from 1965 traded as British Rail, was a state-owned company that operated most of the overground rail transport in Great Britain from 1948 to 1997. It was formed from the nationalisation of the Big Four (British railway companies), Big Four British railway companies, and was privatisation of British Rail, privatised in stages between 1994 and 1997. Originally a trading brand of the Railway Executive of the British Transport Commission, it became an independent statutory corporation in January 1963, when it was formally renamed the British Railways Board. The period of nationalisation saw sweeping changes in the railway. A process of dieselisation and Railway electrification in Great Britain, electrification took place, and by 1968 steam locomotives had been entirely replaced by diesel and electric traction, except for the Vale of Rheidol Railway (a narrow-gauge railway, narrow-gauge tourist line). Passenger train, Passengers replaced freight train, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alternating Current
Alternating current (AC) is an electric current which periodically reverses direction and changes its magnitude continuously with time in contrast to direct current (DC) which flows only in one direction. Alternating current is the form in which electric power is delivered to businesses and residences, and it is the form of electrical energy that consumers typically use when they plug kitchen appliances, televisions, fans and electric lamps into a wall socket. A common source of DC power is a battery cell in a flashlight. The abbreviations ''AC'' and ''DC'' are often used to mean simply ''alternating'' and ''direct'', as when they modify '' current'' or ''voltage''. The usual waveform of alternating current in most electric power circuits is a sine wave, whose positive half-period corresponds with positive direction of the current and vice versa. In certain applications, like guitar amplifiers, different waveforms are used, such as triangular waves or square waves. Audio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Rail Class 302
The British Rail Class 302 (pre-TOPS AM2) was a type of electric multiple unit (EMU) introduced between 1958 and 1960 for outer suburban passenger services on the London, Tilbury and Southend line. This class of multiple unit was constructed using the Mark 1 bodyshell and was slam-door. Overview Like all the Eastern Region AC EMUs of the period, they were equipped to operate on both 25 kV AC and the reduced 6.25 kV voltage in the inner London areas where headroom for the overhead wires was reduced. On the LT&S the changeover point was just east of Barking station on both Upminster and Tilbury routes with the link to Forest Gate being at 6.25kV ac. Each unit was formed of four coaches, in the following formation: DTSOL (Driving Trailer Second Open with Lavatory) – MBS (Motor Brake Second) – TCsoL (Trailer Composite semi-open with Lavatory) – DTS (Driving Trailer Second). The initial set numbers were 201–312, later prefixed by the class number 302 with the introduction ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scrap
Scrap consists of recyclable materials, usually metals, left over from product manufacturing and consumption, such as parts of vehicles, building supplies, and surplus materials. Unlike waste, scrap has monetary value, especially recovered metals, and non-metallic materials are also recovered for recycling. Once collected, the materials are sorted into types — typically metal scrap will be crushed, shredded, and sorted using mechanical processes. Scrap recycling is important for creating a more sustainable economy or creating a circular economy, using significantly less energy and having far less environmental impact than producing metal from ore. Metal recycling, especially of structural steel, ships, used manufactured goods, such as vehicles and white goods, is a major industrial activity with complex networks of wrecking yards, sorting facilities and recycling plants. Processing Scrap metal originates both in business and residential environments. Typically a "scra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TOPS
Total Operations Processing System (TOPS) is a computer system for managing railway locomotives and rolling stock, known for many years of use in the United Kingdom. TOPS was originally developed between the Southern Pacific Railroad (SP), Stanford University and IBM as a replacement for paper-based systems for managing rail logistics. A jointly-owned consultancy company, ''TOPS On-Line Inc.'', was established in 1960 with the goal of implementing TOPS, as well as selling it to third parties. Development was protracted, requiring around 660 man-years of effort to produce a releasable build. During mid-1968, the first phase of the system was introduced on the SP, and quickly proved its advantages over the traditional methods practiced prior to its availability. In addition to SP, TOPS was widely adopted throughout North America and beyond. While it was at one point in widespread use across many of the United States railroads, the system has been perhaps most prominently us ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Rail Class 504
The British Rail Class 504 was a unique type of electric multiple unit that ran on 1200 V DC third rail with side-contact current collection. All other mainline UK third rail has the electric "shoe" on top of the rail. The type was used only on the Bury Line between Manchester and Bury. They were built in 1959 at Wolverton Works, and the body was a standard type used for several electrification schemes of the time, but the high DC voltage through a side-contact third rail was unique in Britain. The trains replaced the previous 5-car units built by the Lancashire & Yorkshire Railway for the route, which had inaugurated this electrification scheme in 1916. All were withdrawn in 1991 when the line was closed for conversion to form part of the Manchester Metrolink light rail system. One unit, no. 65451+77172, is preserved at the East Lancashire Railway. Numbering British Railways numbers were: * Motor Open Brake Second ** M65436-M65461 (26 cars 1959, Wolverton Works) * Drivin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Direct Current
Direct current (DC) is one-directional flow of electric charge. An electrochemical cell is a prime example of DC power. Direct current may flow through a conductor such as a wire, but can also flow through semiconductors, insulators, or even through a vacuum as in electron or ion beams. The electric current flows in a constant direction, distinguishing it from alternating current (AC). A term formerly used for this type of current was galvanic current. The abbreviations ''AC'' and ''DC'' are often used to mean simply ''alternating'' and ''direct'', as when they modify '' current'' or '' voltage''. Direct current may be converted from an alternating current supply by use of a rectifier, which contains electronic elements (usually) or electromechanical elements (historically) that allow current to flow only in one direction. Direct current may be converted into alternating current via an inverter. Direct current has many uses, from the charging of batteries to large po ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volt
The volt (symbol: V) is the unit of electric potential, electric potential difference ( voltage), and electromotive force in the International System of Units (SI). It is named after the Italian physicist Alessandro Volta (1745–1827). Definition One volt is defined as the electric potential between two points of a conducting wire when an electric current of one ampere dissipates one watt of power between those points. Equivalently, it is the potential difference between two points that will impart one joule of energy per coulomb of charge that passes through it. It can be expressed in terms of SI base units ( m, kg, s, and A) as : \text = \frac = \frac = \frac. It can also be expressed as amperes times ohms (current times resistance, Ohm's law), webers per second (magnetic flux per time), watts per ampere (power per current), or joules per coulomb (energy per charge), which is also equivalent to electronvolts per elementary charge: : \text = \text\Omeg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Rail Class 308
The British Rail Class 308 alternating current (AC) electric multiple units (EMU) were built by British Railways' Holgate Road carriage works in three batches between 1959 and 1961. They were initially classified as AM8 units before the introduction of TOPS. Description Class 308/1 The first batch of 33 units were built in 1959, classified as AM8 and numbered 133–165. This was later changed to Class 308/1 under the TOPS system, and units were renumbered 308133–165. These units were built to operate commuter services on the Great Eastern Main Line (GEML) from to , , , and . Each unit was formed of four carriages: two outer driving trailers, an intermediate trailer, and a motor coach. Electrically the Class 308 stock has the same equipment as the Class 302 stock with a few modifications, some of these are the types of overload, the use of fan-cooled rectifier continued until the rectifiers were modified to 8-diode type from 1982. This modified main rectifier was also mod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Rail Class 305
The British Rail Class 305 was an alternating current (AC) electric multiple unit (EMU). Under the pre-1973 British Rail numbering system, the class was known as AM5. When TOPS was introduced, the class became Class 305. Subclasses Class 305 had three subclasses: *305/1 3-car units, standard class accommodation only, 52 units built in 1960 *305/2 4-car units, first and standard class accommodation, 19 units built in 1959 *305/3 4-car units, first and standard class accommodation, 8 units converted from 305/1 in 1988 by adding a TC from units *305/9 3-car unit, non-passenger departmental conversion, converted 1984 Operations 305/1 units were generally deployed on inner suburban services on the Lea Valley lines out of London Liverpool Street to Chingford, Enfield Town and Hertford East. They mainly worked the Chingford and Enfield branches, where their average scheduled speed was . However, they were also used on the Great Eastern lines out of London Liverpool Street and occ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rugby Railway Station
Rugby railway station serves the town of Rugby in Warwickshire, England. It opened during the Victorian era, in 1885, replacing earlier stations situated a little further west. Since the closure of the former Rugby Central station, on the now-abandoned Great Central Railway route through the town, it is Rugby's only station. Between 1950 and 1970, the station was known as Rugby Midland before reverting to its original title. The station underwent an extensive remodelling between 2006 and 2008; new platforms were added and a new ticket office and entrance building were constructed. The original Victorian part of the station was retained in the upgrade. Rugby station is at the centre of two important junctions of the West Coast Main Line (WCML) connecting London to Birmingham, North West England and Scotland. The junction between the Trent Valley Line to the North West and the Rugby-Birmingham-Stafford Line to Birmingham is a short distance west of the station. East of the st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liverpool Lime Street
Liverpool Lime Street is a terminus railway station and the main station serving the city centre of Liverpool. Opened in August 1836, it is the oldest still-operating grand terminus mainline station in the world. A branch of the West Coast Main Line from London Euston terminates at the station, as does the original Liverpool and Manchester Railway. Journeys from Lime Street cover a wide range of destinations across England, Scotland and Wales. Having realised that their existing Crown Street railway station was too far away from the city centre, the Liverpool and Manchester Railway commenced construction of the more central Lime Street station in October 1833. Designed by John Cunningham, Arthur Holme and John Foster Jr, it was officially opened in August 1836. Proving to be very popular with train commuters, expansion of the station had become necessary within six years of its opening. The first expansion, which was collaboratively produced by Joseph Locke, Richard Turn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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