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GER Class L77
The GER Class L77, LNER Class N7, is a class of 0-6-2T steam locomotives. They were designed by Alfred John Hill of the Great Eastern Railway and introduced in 1915. The design was perpetuated by Nigel Gresley of the LNER after the 1923 grouping. 134 were built and one example is preserved. Overview The N7s had superheaters and piston valves. They were unusual (for inside-cylinder locomotives) in having Walschaerts valve gear. They were, as London suburban locomotives, fitted with Westinghouse air brakes. Some were fitted with condensing apparatus for working on the Metropolitan line and the East London Line but the condensing apparatus was removed between 1935 and 1938. Numbering The first 22 were allocated numbers in the 990–1011 range when ordered by the GER, but the last 10 did not emerge until the grouping. The LNER added 7000 to their GER numbers, and then built a further 112 locomotives between 1925 and 1928. In the 1946 renumbering scheme, they were renumbered 960 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alfred John Hill
Alfred John Hill (1 January 1862 – 1 January 1927) was Chief Mechanical Engineer at the Stratford Works of the Great Eastern Railway from 1912 to 1922. His best-known design is probably the GER Class L77 0-6-2 tank locomotive which was perpetuated (as Class N7) by Nigel Gresley of the London and North Eastern Railway after the 1923 grouping. He was made a Commander of the Order of the British Empire in the 1918 Birthday Honours. Locomotive designs * GER Class C72 ( LNER Class J68 0-6-0T) * GER Class B74 ( LNER Class Y4 0-4-0T) * GER Class L77 ( LNER Class N7 0-6-2T) * GER Class T77 ( LNER Class J19 0-6-0) * GER Class D81 ( LNER Class J20 0-6-0) * GER Class H88 ( LNER Class D16 4-4-0) *GER Class S69 The Great Eastern Railway (GER) Class S69, also known as 1500 Class, and later classified B12 by the London and North Eastern Railway (LNER) is a class of 4-6-0 steam locomotive designed to haul express passenger trains from London Liverpool S ... ( LNER Class B12 4-6-0) Re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Superheater
A superheater is a device used to convert saturated steam or wet steam into superheated steam or dry steam. Superheated steam is used in steam turbines for electricity generation, in some steam engines, and in processes such as steam reforming. There are three types of superheaters: radiant, convection, and separately fired. A superheater can vary in size from a few tens of feet to several hundred feet (a few metres to some hundred metres). Types * A radiant superheater is placed directly in the radiant zone of the combustion chamber near the water wall so as to absorb heat by radiation. * A convection superheater is located in the convective zone of the furnace, in the path of the hot flue gases, usually ahead of an economizer. A convection superheater is also called a primary superheater. * A separately fired superheater is a superheater that is placed outside the main boiler and has its own separate combustion system. This superheater design incorporates additional burners i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Eastern Railway Locomotives
Great may refer to: Descriptions or measurements * Great, a relative measurement in physical space, see Size * Greatness, being divine, majestic, superior, majestic, or transcendent People * List of people known as "the Great" * Artel Great (born 1981), American actor * Great Osobor (born 2002), Spanish-born British basketball player Other uses * ''Great'' (1975 film), a British animated short about Isambard Kingdom Brunel * ''Great'' (2013 film), a German short film * Great (supermarket), a supermarket in Hong Kong * GReAT, Graph Rewriting and Transformation, a Model Transformation Language * Gang Resistance Education and Training Gang Resistance Education And Training, abbreviated G.R.E.A.T., provides a school-based, police officer-instructed program in America that includes classroom instruction and a variety of learning activities. The program was originally adminis ..., or GREAT, a school-based and police officer-instructed program * Global Research and Analysis Te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
East Anglian Railway Museum
The East Anglian Railway Museum is a museum located at Chappel and Wakes Colne railway station in Essex, England, which is situated on the former Great Eastern Railway branch line from Marks Tey to Sudbury. Services on the Sudbury Branch Line are operated by Abellio Greater Anglia. The museum has a wide collection of locomotives and rolling stock, some of which are fully restored, three are converted into Thomas, Percy and Toby replicas while others are undergoing repair and restoration. The Restoration Shed was built in 1983–4, before which most work had to take place in the Goods Shed or in the open. On event days, steam or diesel train rides are operated over a short demonstration track. The museum hosts two annual events: the Winter Beer Festival held in late February / early March (timing depends on UK school holidays), and the Summer Beer Festival held each September. Museum history The museum was originally formed as the Stour Valley Railway Preservation Society on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
LNER Class N7
The GER Class L77, LNER Class N7, is a class of 0-6-2T steam locomotives. They were designed by Alfred John Hill of the Great Eastern Railway and introduced in 1915. The design was perpetuated by Nigel Gresley of the LNER after the 1923 grouping. 134 were built and one example is preserved. Overview The N7s had superheaters and piston valves. They were unusual (for inside-cylinder locomotives) in having Walschaerts valve gear. They were, as London suburban locomotives, fitted with Westinghouse air brakes. Some were fitted with condensing apparatus for working on the Metropolitan line and the East London Line but the condensing apparatus was removed between 1935 and 1938. Numbering The first 22 were allocated numbers in the 990–1011 range when ordered by the GER, but the last 10 did not emerge until the grouping. The LNER added 7000 to their GER numbers, and then built a further 112 locomotives between 1925 and 1928. In the 1946 renumbering scheme, they were renumbered 96 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hatfield, Hertfordshire
Hatfield is a town and civil parish in Hertfordshire, England, in the borough of Welwyn Hatfield. It had a population of 29,616 in 2001, 39,201 at the 2011 census, and 41,265 at the 2021 census. The settlement is of Saxon origin. Hatfield House, home of the Marquess of Salisbury, forms the nucleus of the old town. From the 1930s when de Havilland opened a factory, until the 1990s when British Aerospace closed it, aircraft design and manufacture employed more people there than any other industry. Hatfield was one of the post-war New Towns Act 1946, New Towns built around London and has much International Style (architecture), modernist architecture from the period. The University of Hertfordshire is based there. Hatfield lies north of London beside the A1(M) motorway and has direct trains to London King's Cross railway station, London St Pancras railway station, Finsbury Park station, Finsbury Park and Moorgate station, Moorgate. There has been a strong increase in commuters who ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Round-topped Boiler
A round-topped boiler is a type of steam boiler, boiler used for some designs of steam locomotive and portable engine. It was an early form of :en:locomotive boiler, locomotive boiler, although continuing to be used for new locomotives through to the end of steam locomotive manufacture in the 1960s. Firebox They use the early form of firebox (steam engine), firebox, where the outer wrapper of the firebox (steam engine), firebox is a semi-circular continuation of the cylindrical boiler barrel. They are relatively simple in shape and manufacture, but their design and service is complicated by the difference in shape between the outer and the flat-topped inner wrapper of the firebox. This requires complex Boiler stay, staying to support it. The first boilers of this form had raised fireboxes that were considerably larger, particularly higher, than the boiler barrel. In the extreme case, this gave rise to the haycock boiler, where the firebox was raised into a vaulted dome. In most c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Belpaire Firebox
The Belpaire firebox is a type of firebox used on steam locomotives. It was invented by Alfred Belpaire of Belgium in 1864. Today it generally refers to the shape of the outer shell of the firebox which is approximately flat at the top and square in cross-section, indicated by the longitudinal ridges on the top sides. However, it is the similar square cross-section inner firebox which provides the main advantages of this design i.e. it has a greater surface area at the top of the firebox where the heat is greatest, improving heat transfer and steam production, compared with a round-top shape. The flat firebox top would make supporting it against pressure more difficult (e.g. by means of girders, or stays) compared to a round-top. However, the use of a similarly shaped square outer boiler shell allows simpler perpendicular stays to be used between the shells. The Belpaire outer firebox is, nevertheless, more complicated and expensive to manufacture than a round-top version. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
East London Line
The East London line is a railway line running north to south through the East, Docklands and South areas of London. It is used by London Overground services. It was previously a line of the London Underground. Built in 1869 by the East London Railway Company, which reused the Thames Tunnel intended for horse-drawn carriages, the line became part of the London Underground network in 1933. After nearly 75 years as part of that network, it closed on 22 December 2007 for an extensive refurbishment and expansion, reopening as part of the Overground network in April 2010. Phase 2, which links the line to the South London line with a terminus at , opened on 9 December 2012, creating an orbital railway around inner London. In 2024, London Overground services on the line were rebranded the Windrush line. History Establishment of the East London Railway The East London Railway (ELR) was created by the East London Railway Company, a consortium of six railway companies: the G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metropolitan Line
The Metropolitan line, colloquially known as the Met, is a London Underground line between in the City of London and and in Buckinghamshire, with branches to in Hertfordshire and in London Borough of Hillingdon, Hillingdon. Printed in magenta on the tube map, the line is in length and serves 34 stations (13 of which are step free to platform). Between Aldgate and , the track is mostly in shallow "cut and cover" tunnels, apart from short sections at and Farringdon stations. The rest of the line is above ground, with a loading gauge of a similar size to those on main lines. Just under passenger journeys were made on the line in 2019. This line is one of just two Underground lines to cross the Greater London boundary and proceed outwards into the Home counties, Home Counties, the other being the Central line (London Underground), Central line. It is the only Underground line with an express service at peak times; the resulting longer distance between stations means trains c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
