LNER Peppercorn Class A1
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LNER Peppercorn Class A1
London and North Eastern Railway's (LNER) Peppercorn Class A1 is a class of 4-6-2 "Pacific" steam locomotives largely built between 1948 and 1949 at Doncaster Works, Doncaster and Darlington Works to a design of Arthur Peppercorn. Forty-nine were built for hauling express passenger services on the East Coast Main Line owned by LNER's successor, British Railways' North Eastern Region of British Railways, North Eastern Region. None of the original 49 Peppercorn A1s survived into preservation, with the last being scrapped in 1966. The 50th Peppercorn A1, LNER Peppercorn Class A1 60163 Tornado, 60163 ''Tornado'', was completed in 2008 as an evolved member of its class. Background Most of the former LNER Gresley Classes A1 and A3, LNER Class A1 locomotives designed by Sir Nigel Gresley had been rebuilt as LNER Class A3 locomotives prior to this class being conceived. The few straggling LNER Class A1 locomotives that remained unrebuilt during the tenure of Peppercorn's predeces ...
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Arthur Peppercorn
Arthur Henry Peppercorn, (29 January 1889 – 3 March 1951) was an English railway engineer, and was the last Chief Mechanical Engineer (CME) of the London and North Eastern Railway. Career Arthur Peppercorn was born in Leominster in 1889 and educated at Hereford Cathedral School. In 1905 he started his career as an apprentice with the Great Northern Railway (GNR) at Doncaster. Then CME Nigel Gresley took a liking to the young apprentice and would supervise his career; in turn, Peppercorn was devoted to Gresley, and would in time be treated almost like one of the family. Gresley's sudden death in 1941 was a shock to all in the LNER, and although Peppercorn was considered for the role, his great modesty in comparison with that of the other candidate, Edward Thompson, as well as the influence Thompson held within the LNER seniority meant that it was Thompson who succeeded Gresley. Thompson was already 60 years old, and both he and the LNER recognised that his appointment ...
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Edward Thompson (engineer)
Edward Thompson (25 June 1881 – 15 July 1954) was an English railway engineer, and was Chief Mechanical Engineer of the London and North Eastern Railway between 1941 and 1946. Edward Thompson was born at Marlborough, Wiltshire on 25 June 1881. He was the son of Francis Thompson, assistant master at Marlborough College. He was educated at Marlborough before taking the Mechanical Science Tripos at Pembroke College, Cambridge, earning a third class degree. Thompson entered the railway scene after education, contrasting that of his predecessor Nigel Gresley, who had also attended Marlborough after gaining practical experience as a pupil at Horwich Works. Biography Edward Thompson was born in Marlborough, Wiltshire to Francis Thompson. His grandfather Francis ran a tailoring business in London. He would be educated at Marlborough College, same as his predecessor. After education at Marlborough, he would attend Pembroke College and be influenced by Sir George Stokes, 1st Baronet, ...
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Great Northern Railway (Great Britain)
The Great Northern Railway (GNR) was a British railway company incorporated in 1846 with the object of building a line from London to York. It quickly saw that seizing control of territory was key to development, and it acquired, or took leases of, many local railways, whether actually built or not. In so doing, it overextended itself financially. Nevertheless, it succeeded in reaching into the coalfields of Nottinghamshire, Derbyshire and Yorkshire, as well as establishing dominance in Lincolnshire and north London. Bringing coal south to London was dominant, but general agricultural business, and short- and long-distance passenger traffic, were important activities too. Its fast passenger express trains captured the public imagination, and its Chief Mechanical Engineer Nigel Gresley became a celebrity. Anglo-Scottish travel on the East Coast Main Line became commercially important; the GNR controlled the line from London to Doncaster and allied itself with the North Easte ...
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Timken Company
The Timken Company is a global manufacturer of bearings and power transmission products. Timken operates from 42 countries. Company history In 1898, Henry Timken obtained a patent for an improved tapered roller bearing, and in 1899 incorporated as The Timken Roller Bearing Axle Company in St. Louis. In 1901, the company moved to Canton, Ohio, as the automobile industry began to overtake the carriage industry. Timken and his two sons chose this location because of its proximity to the American car manufacturing centers of Detroit and Cleveland and the American steel-making centers of Pittsburgh and Cleveland. In 1917, the company began steel- and tube-making operations in Canton to vertically integrate and maintain better control over the steel used in its bearings. World War I had created an increase in demand for steel, affecting its supply and price in the market. Timken entered international markets in the early 1900s, establishing a presence initially in Great Britai ...
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Eastern Region Of British Railways
The Eastern Region was a region of British Railways from 1948, whose operating area could be identified from the dark blue signs and colour schemes that adorned its station and other railway buildings. Together with the North Eastern Region (which it absorbed in 1967), it covered most lines of the former London and North Eastern Railway, except in Scotland. By 1988 the Eastern Region had been divided again into the Eastern Region and the new Anglia Region, with the boundary points being between and , and between and . The region ceased to be an operating unit in its own right in the 1980s and was wound up at the end of 1992. History The region was formed in at nationalisation in 1948, mostly out of the former Great Northern, Great Eastern and Great Central lines that were merged into the LNER in 1923. Of all the "Big Four" pre-nationalisation railway companies, the LNER was most in need of significant investment. In the immediate post-war period there was a need to rebuild ...
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British Rail
British Railways (BR), which from 1965 traded as British Rail, was a state-owned company that operated most rail transport in Great Britain from 1948 to 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. British Railways was formed on 1 January 1948 as a result of the Transport Act 1947, which nationalised the Big Four British railway companies along with some other (but not all) smaller railways. Profitability of the railways became a pressing concern during the 1950s, leading to multiple efforts to bolster performance, including some line closures. The 1955 Modernisation Plan formally directed a process of dieselisation and electrification to take place; accordingly, steam locomotives had been entirely replaced by diesel and electric traction (except for the narrow-gauge Vale of Rheidol Railway tourist lin ...
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Cylinder (locomotive)
The cylinder is the power-producing element of the steam engine powering a steam locomotive. The cylinder (engine), cylinder is made pressure-tight with end covers and a piston; a valve distributes the steam to the ends of the cylinder. Cylinders were initially cast iron, but later made of steel. The cylinder casting includes other features such as (in the case of Stephenson's Rocket) valve ports and mounting feet. The last big American locomotives incorporated the cylinders as part of huge one-piece steel castings that were the Locomotive frame, main frame of the locomotive. Renewable wearing surfaces were needed inside the cylinders and provided by cast-iron bushings. The way the valve controlled the steam entering and leaving the cylinder was known as steam distribution and shown by the shape of the indicator diagram. What happened to the steam inside the cylinder was assessed separately from what happened in the boiler and how much friction the moving machinery had to cope wit ...
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Steam Locomotive Exhaust System
The steam locomotive exhaust system consists of those parts of a steam locomotive which together discharge exhaust steam from the cylinders in order to increase the draught through the fire. It usually consists of the blastpipe (or first stage nozzle), smokebox, and chimney, although later designs also include second and third stage nozzles. History The primacy of discovery of the effect of directing the exhaust steam up the chimney as a means of providing draft through the fire is the matter of some controversy, Ahrons (1927) devoting significant attention to this matter. The exhaust from the cylinders on the first steam locomotive – built by Richard Trevithick – was directed up the chimney, and he noted its effect on increasing the draft through the fire at the time. At Wylam, Timothy Hackworth also employed a blastpipe on his earliest locomotives, but it is not clear whether this was an independent discovery or a copy of Trevithick's design. Shortly after Hackworth, G ...
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Kylchap
The Kylchap steam locomotive exhaust system was designed and patented by French steam engineer André Chapelon, using a second-stage nozzle designed by the Finnish engineer Kyösti Kylälä, known as the ''Kylälä spreader'', with the composite name KylChap being given the design. Construction The Kylchap exhaust consists of four stacked nozzles, the first exhaust nozzle (UK: blastpipe) blowing exhaust steam only and known as the primary nozzle, with a Chapelon design using four triangular jets. That exhausts into the second stage, the Kylälä spreader, which mixes the exhaust steam with some of the smokebox gases. That exhausts into a third stage, designed by Chapelon, which mixes the resulting steam/smokebox gases mixture with yet more smokebox gases. The four nozzles of the third stage exhaust into the fourth stage, the classic bell-mouth chimney (U.S.: stack). Theory It was Chapelon's theory that such a multi-stage mixing and suction arrangement would be more effi ...
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Aberdeen
Aberdeen ( ; ; ) is a port city in North East Scotland, and is the List of towns and cities in Scotland by population, third most populous Cities of Scotland, Scottish city. Historically, Aberdeen was within the historic county of Aberdeenshire (historic), Aberdeenshire, but is now separate from the council area of Aberdeenshire. Aberdeen City Council is one of Scotland's 32 Local government in Scotland, local authorities (commonly referred to as ''councils''). Aberdeen has a population of for the main urban area and for the wider List of towns and cities in Scotland by population#Settlements, settlement including outlying localities, making it the United Kingdom's List of urban areas in the United Kingdom, 39th most populous built-up area. Aberdeen has a long, sandy coastline and features an oceanic climate, with cool summers and mild, rainy winters. Aberdeen received royal burgh status from David I of Scotland (1124–1153), which transformed the city economically. The tr ...
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Edinburgh
Edinburgh is the capital city of Scotland and one of its 32 Council areas of Scotland, council areas. The city is located in southeast Scotland and is bounded to the north by the Firth of Forth and to the south by the Pentland Hills. Edinburgh had a population of in , making it the List of towns and cities in Scotland by population, second-most populous city in Scotland and the List of cities in the United Kingdom, seventh-most populous in the United Kingdom. The Functional urban area, wider metropolitan area had a population of 912,490 in the same year. Recognised as the capital of Scotland since at least the 15th century, Edinburgh is the seat of the Scottish Government, the Scottish Parliament, the Courts of Scotland, highest courts in Scotland, and the Palace of Holyroodhouse, the official residence of the Monarchy of the United Kingdom, British monarch in Scotland. It is also the annual venue of the General Assembly of the Church of Scotland. The city has long been a cent ...
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Newcastle Upon Tyne
Newcastle upon Tyne, or simply Newcastle ( , Received Pronunciation, RP: ), is a City status in the United Kingdom, cathedral city and metropolitan borough in Tyne and Wear, England. It is England's northernmost metropolitan borough, located on the River Tyne's northern bank opposite Gateshead to the south. It is the most populous settlement in the Tyneside conurbation and North East England. Newcastle developed around a Roman Empire, Roman settlement called Pons Aelius. The settlement became known as ''Monkchester'' before taking on the name of The Castle, Newcastle, a castle built in 1080 by William the Conqueror's eldest son, Robert Curthose. It was one of the world's largest ship building and repair centres during the Industrial Revolution. Newcastle was historically part of the county of Northumberland, but governed as a county corporate after 1400. In 1974, Newcastle became part of the newly-created metropolitan county of Tyne and Wear. The local authority is Newcastle Ci ...
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