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Automatic Warning System
The Automatic Warning System (AWS) was introduced in the 1950s in the United Kingdom to provide a train driver with an audible warning and visual reminder that they were approaching a distant signal at caution. Its operation was later extended to give warnings for; * A colour light signal displaying a double yellow (steady or flashing), single yellow or red aspect * A reduction in permissible speed * A temporary or emergency speed restriction * An automatic barrier crossing locally monitored (ABCL), an automatic open crossing locally monitored (AOCL), or an open crossing (OC). AWS was based on a 1930 system developed by Alfred Ernest Hudd and marketed as the "Strowger-Hudd" system. An earlier contact system, installed on the Great Western Railway since 1906 and known as automatic train control (ATC), was gradually supplanted by AWS within the Western Region of British Railways. Principles of operation Information is conveyed by magnetic fields to the moving train throu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
D5401 AWS 260108 D , a state road in Croatia
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D54 may refer to: * D54 (protocol) * a road in Dubai * Greek destroyer Leon (D54), a Greek Navy destroyer * INS Ranvir (D54), an Indian Navy destroyer * D54 (Croatia) D54 is a state road in the northern Dalmatia region of Croatia that branches off from D8 (Croatia), D8 state road, facilitating access to Obrovac, Zadar County, Obrovac and D27 (Croatia), D27 state road which in turn facilitates bypassing both M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sectional Appendix
In Great Britain, the Sectional Appendix is a railway document compiled by Network Rail and is the official definition of railway infrastructure, giving a detailed description of all railway lines owned by Network Rail. It has traditionally been published in printed format, originally as a bound book and subsequently in loose-leaf format, for ease of updating. History In earlier years, instructions to traincrews relating to the operation of the railway were included within the working timetables. As the volume of instructions increased, they later came to be published in a separate document, known in full as the ''"Sectional Appendix to the Working Timetable"'' or similar. Content There are modules for different areas, e.g. KSW2 covers Kent and Sussex. Each module may be divided in a similar way to the following sections: Section 1: Route Module ;Maps Outline maps providing a general overview of the route showing lines, station names, and reference numbers. The number ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heinrich Hertz
Heinrich Rudolf Hertz ( ; ; 22 February 1857 – 1 January 1894) was a German physicist who first conclusively proved the existence of the electromagnetic waves predicted by James Clerk Maxwell's Maxwell's equations, equations of electromagnetism. The unit of frequency, cycle per second, was named the "hertz" in his honor.IEC History . Iec.ch. Biography Heinrich Rudolf Hertz was born in 1857 in Hamburg, then a sovereign state of the German Confederation, into a prosperous and cultured Hanseatic (class), Hanseatic family. His father was Gustav Ferdinand Hertz. His mother was Anna Elisabeth Pfefferkorn. While studying at the Gelehrtenschule des Johanneums in Hamburg, Hertz showed an aptitude for sciences as well as languages, learning Arabic. He studied sciences and engineering in th ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spark-gap Transmitter
A spark-gap transmitter is an obsolete type of radio transmitter which generates radio waves by means of an electric spark."Radio Transmitters, Early" in Spark-gap transmitters were the first type of radio transmitter, and were the main type used during the wireless telegraphy or "spark" era, the first three decades of radio, from 1887 to the end of World War I. German physicist Heinrich Hertz built the first experimental spark-gap transmitters in 1887, with which he proved the existence of radio waves and studied their properties. A fundamental limitation of spark-gap transmitters is that they generate a series of brief transient pulses of radio waves called damped waves; they are unable to produce the continuous waves used to carry audio (sound) in modern AM or FM radio transmission. So spark-gap transmitters could not transmit audio, and instead transmitted information by radiotelegraphy; the operator switched the transmitter on and off with a telegraph key, creating pulses ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frank Wyatt Prentice
Frank or Franks may refer to: People * Frank (given name) * Frank (surname) * Franks (surname) * Franks, a medieval Germanic people * Frank, a term in the Muslim world for all western Europeans, particularly during the Crusades - see Farang Currency * Liechtenstein franc or frank, the currency of Liechtenstein since 1920 * Swiss franc or frank, the currency of Switzerland since 1850 * Westphalian frank, currency of the Kingdom of Westphalia between 1808 and 1813 * The currencies of the German-speaking cantons of Switzerland (1803–1814): ** Appenzell frank ** Argovia frank ** Basel frank ** Berne frank ** Fribourg frank ** Glarus frank ** Graubünden frank ** Luzern frank ** Schaffhausen frank ** Schwyz frank ** Solothurn frank ** St. Gallen frank ** Thurgau frank ** Unterwalden frank ** Uri frank ** Zürich frank Places * Frank, Alberta, Canada, an urban community, formerly a village * Franks, Illinois, United States, an unincorporated community * Franks, Missouri, Uni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Eastern Railway (United Kingdom)
The North Eastern Railway (NER) was an English railway company. It was incorporated in 1854 by the combination of several existing railway companies. Later, it was amalgamated with other railways to form the London and North Eastern Railway at the Grouping in 1923. Its main line survives to the present day as part of the East Coast Main Line between London and Edinburgh. Unlike many other pre-Grouping companies the NER had a relatively compact territory, in which it had a near monopoly. That district extended through Yorkshire, County Durham and Northumberland, with outposts in Westmorland and Cumberland. The only company penetrating its territory was the Hull & Barnsley, which it absorbed shortly before the main grouping. The NER's main line formed the middle link on the Anglo-Scottish "East Coast Main Line" between London and Edinburgh, joining the Great Northern Railway near Doncaster and the North British Railway at Berwick-upon-Tweed. Although primarily a Northern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vincent Raven
Sir Vincent Litchfield Raven, KBE (3 December 1859 – 14 February 1934) was an English railway engineer, and was chief mechanical engineer of the North Eastern Railway from 1910 to 1922. Biography Vincent Raven was born the son of a clergyman at Great Fransham rectory in Norfolk and educated at Aldenham School in Hertfordshire. In 1877 he began his career with the North Eastern Railway as a pupil of the then Locomotive Superintendent, Edward Fletcher. By 1893 he had achieved the post of Assistant Mechanical Engineer to Wilson Worsdell who was then the Locomotive Superintendent. In this post he was involved for the first time with an electrification project, as the N.E.R. was electrifying the North Tyneside suburban route in 1904. This was a third rail system at 600 volts DC. Steam locomotives In 1910 he became Chief Mechanical Engineer on Wilson Worsdell's retirement (The title of the post had changed from Locomotive Superintendent in 1902). Raven developed some of Worsd ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
S-Bahn
The S-Bahn is the name of hybrid urban- suburban rail systems serving a metropolitan region in German-speaking countries. Some of the larger S-Bahn systems provide service similar to rapid transit systems, while smaller ones often resemble commuter or even regional rail. The term derives from ''Schnellbahn'', ''Stadtbahn'' or ''Stadtschnellbahn''. Similar systems in Switzerland are known as S-Bahn as well. In Belgium it is known as S-Trein (Flemish) or Train S (French). In Belgium there are S-Trains in the five largest cities: Brussels, Antwerp, Liège, Ghent and Charleroi. In Denmark, they are known as S-tog , in the Czech Republic as Esko or S-lines. Characteristics There is no complete definition of an S-Bahn system. S-Bahn are, where they exist, the most local type of railway stopping at all existing stations inside and around a city, while other mainline trains only call at major stations. They are slower than mainline railways but usually serve as fast crosstown se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Journal Bearing
A plain bearing, or more commonly sliding contact bearing and slide bearing (in railroading sometimes called a solid bearing, journal bearing, or friction bearing), is the simplest type of bearing, comprising just a bearing surface and no rolling elements. Therefore, the journal (i.e., the part of the shaft in contact with the bearing) slides over the bearing surface. The simplest example of a plain bearing is a shaft rotating in a hole. A simple linear bearing can be a pair of flat surfaces designed to allow motion; e.g., a drawer and the slides it rests on or the ways on the bed of a lathe. Plain bearings, in general, are the least expensive type of bearing. They are also compact and lightweight, and they have a high load-carrying capacity. Design The design of a plain bearing depends on the type of motion the bearing must provide. The three types of motions possible are: * ''Journal'' (''friction'', ''radial'' or ''rotary'') ''bearing'': This is the most common type of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The English Mechanic And World Of Science
''The English Mechanic and World of Science'', commonly referred to as ''English Mechanic'', was a popular-science magazine, published weekly from 1865 to 1926, generally consisting of 24 pages. It was aimed at people interested in inventions and gadgets and new discoveries in science, technology, and mathematics. A regular chess column was also included, written by James Pierce. History The magazine was founded as a 1d weekly ''The English Mechanic'' subtitled ''A Record of Mechanical Invention, Scientific and Industrial Progress, Building, Engineering, Manufactures, Arts &c.'' in 1865, and purchased in its first year of publication by John Passmore Edwards. Ebeneezer J. Kibblewhite was a regular contributor, then became editor. The publication featured a lively correspondence section, which occupied a quarter of its pages, each week headed by a quote from Montaigne.I would have everyone write what he knows, and as much as he knows but no more . . . for such a person may have so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HM Railway Inspectorate
Established in 1840, His Majesty's Railway Inspectorate (HMRI) is the organisation responsible for overseeing safety on Britain's railways and tramways. It was previously a separate non-departmental public body, but from 1990 to April 2006 it was part of the Health and Safety Executive. It was then transferred to the Office of Rail and Road and ceased to exist by that name in May 2009 when it was renamed the Safety Directorate. However, in summer 2015 its name was re-established as the safety arm of ORR. Modern HMRI inspectorate The modern HMRI within the Office of Road and Rail (ORR) identifies as "The Railway Inspectorate". HMRI works in tandem with the rest of the ORR, and as such may be consulted on matters effecting industry efficiency. Internally, most of HMRI's inspectors are part of the Railway Safety Directorate (RSD) of the ORR, although some Railway Performance and Planning (RPP) engineers have some more limited powers as warranted HMRI individuals. HMRI's role ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Yolland
William Yolland CB, FRS FRSA (17 March 1810 – 4 September 1885) was an English military surveyor, astronomer and engineer, and was Britain's Chief Inspector of Railways from 1877 until his death. He was a redoubtable campaigner for railway safety, often in the face of strong opposition, at a time when railway investment was being directed towards the expansion of the networks rather than the prevention of accidents. He was a member of the three-man committee of inquiry into the Tay Bridge disaster.Vetch (2004) Career Yolland was born in Plympton St Mary, Devon, the son of the land agent to Lord Morley, Plymouth, and his father promoted the boy's interest in surveying and land management by enrolling him at a school specialising in mathematics. He was commissioned into the Royal Engineers in 1828 and completed his technical training at the Royal School of Military Engineering in Chatham, Kent, in 1831. Ordnance Survey After army service in Britain, Ireland and Canada he was p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
