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Balanced Slide Valve
The slide valve is a rectilinear valve used to control the admission of steam into and emission of exhaust from the cylinder of a steam engine. Use In the 19th century, most steam locomotives used slide valves to control the flow of steam into and out of the cylinders. In the 20th century, slide valves were gradually superseded by piston valves, particularly in engines using superheated steam. There were two reasons for this: * With piston valves, the steam passages can be made shorter. This reduces resistance to the flow of steam and improves efficiency. * It is difficult to lubricate slide valves adequately in the presence of superheated steam. Murdoch's D slide valve The D slide valve, or more specifically Long D slide valve, is a form of slide valve, invented by William Murdoch and patented in 1799. It is named after the hollow central D-sectioned piston. This valve worked by "connecting the upper and lower valves so as to be worked by one rod or spindle, and in mak ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Slide-valve Cylinder, Three-quarter View (Heat Engines, 1913)
The slide valve is a rectilinear polygon, rectilinear valve used to control the admission of steam into and emission of exhaust from the cylinder of a steam engine. Use In the 19th century, most steam locomotives used slide valves to control the flow of steam into and out of the Cylinder (steam locomotive), cylinders. In the 20th century, slide valves were gradually superseded by piston valve (steam engine), piston valves, particularly in engines using Superheater, superheated steam. There were two reasons for this: * With piston valves, the steam passages can be made shorter. This reduces resistance to the flow of steam and improves efficiency. * It is difficult to Lubrication, lubricate slide valves adequately in the presence of superheated steam. Murdoch's D slide valve The D slide valve, or more specifically Long D slide valve, is a form of slide valve, invented by William Murdoch and patented in 1799. It is named after the hollow central D-sectioned piston. This valv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Murdoch
William Murdoch (sometimes spelled Murdock) (21 August 1754 – 15 November 1839) was a Scottish chemist, inventor, and mechanical engineer. Murdoch was employed by the firm of Boulton & Watt and worked for them in Cornwall, as a steam engine erector for ten years, spending most of the rest of his life in Birmingham, England. Murdoch was the inventor of the oscillating cylinder steam engine, and gas lighting is attributed to him in the early 1790s, as well as the term "gasometer". However the Dutch-Belgian Academic Jean-Pierre Minckelers had already published on coal gasification and gas lighting in 1784, and had used gas to light his auditorium at the Old University of Leuven, University of Leuven from 1785. Archibald Cochrane, 9th Earl of Dundonald, had also used gas for lighting his family estate from 1789 onwards. Murdoch also made innovations to the steam engine, including the sun and planet gear and D slide valve. He invented the steam gun and the pneumatic tube messag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steam Locomotive Nomenclature
__NOTOC__ Main components found on a typical steam locomotive include: File:Diagram_of_steam_locomotive_components_(March_2021_version).tif, center, 800px, The main components of a typical steam locomotive. Click or hover over numbers to see names. () rect 133 15 172 57 Tender rect 538 17 575 57 Cab rect 667 15 708 57 Safety valve rect 715 15 754 55 Reach rod rect 754 15 789 55 Whistle rect 797 13 836 57 Dynamo rect 876 9 917 57 Sand dome rect 923 9 963 55 Throttle lever / Regulator rect 1009 11 1056 57 Steam dome rect 1152 9 1194 57 Air pump / Air compressor rect 1220 9 1266 55 Smokebox rect 1277 9 1324 57 Steam pipe rect 1338 11 1383 55 Smokebox door rect 593 409 640 457 Trailing truck / Rear bogie rect 645 409 688 457 Foot board / Run board / Running board / Tread plate rect 695 409 741 457 Frame rect 752 409 797 455 Brake shoe / Brake block rect 849 412 891 455 Sand pipe rect 895 412 935 455 Coupling rods / Side rods rect 993 410 1037 453 Valve gear rect 1041 410 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sleeve Valve
The sleeve valve is a type of valve mechanism for piston engines, distinct from the usual poppet valve. Sleeve valve engines saw use in a number of pre–World War II luxury cars and in the United States in the Willys-Knight car and light truck. They subsequently fell from use due to advances in poppet-valve technology, including sodium cooling, and the Knight system double sleeve engine's tendency to burn a lot of lubricating oil or to seize due to lack of it. The Scottish Argyll company used its own, much simpler and more efficient, single sleeve system (Burt-McCollum) in its cars, a system which, after extensive development, saw substantial use in British aircraft engines of the 1940s, such as the Napier Sabre, Bristol Hercules, Centaurus, and the promising but never mass-produced Rolls-Royce Crecy, only to be supplanted by the jet engines. Description A sleeve valve takes the form of one (or in the case of double sleeve valves, two) machined cylinders which fit concentric ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Poppet Valve
A poppet valve (also sometimes called mushroom valve) is a valve typically used to control the timing and quantity of petrol (gas) or vapour flow into or out of an engine, but with many other applications. It consists of a hole or open-ended chamber, usually round or oval in cross-section, and a plug, usually a disk shape on the end of a shaft known as a valve stem. The working end of this plug, the valve face, is typically ground at a 45° bevel to seal against a corresponding valve seat ground into the rim of the chamber being sealed. The shaft travels through a valve guide to maintain its alignment. A pressure differential on either side of the valve can assist or impair its performance. In exhaust applications higher pressure against the valve helps to seal it, and in intake applications lower pressure helps open it. Etymology The word poppet shares etymology with "puppet": it is from the Middle English ''popet'' ("youth" or "doll"), from Middle French ''poupette'', whic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corliss Valve
Corliss is both a surname and a given name. People Given name * Corliss Lamont (1902–1995), American philosopher, political activist, and philanthropist * C. C. Moseley (1894–1974), American aviator and aviation businessman * Corliss Palmer (1899–1952), American silent film actress * Corliss P. Stone (1806–1873), mayor of Seattle and businessman * Corliss Waitman (born 1995), Belgian-born American football punter for the Pittsburgh Steelers * Corliss Williamson (born 1973), basketball player Surname * Augustus W. Corliss (1837–1907), American writer, historian and Civil War veteran * George Henry Corliss (1817–1888), inventor of the Corliss steam engine * George W. Corliss (1834–1903), American Civil War recipient of the Medal of Honor * Guy C. H. Corliss (1858–1937), American judge and justice of the Supreme Court of North Dakota * Jack Corliss, scientist and discoverer of undersea hydrothermal vents * Jeb Corliss (born 1976), American skydiver and base ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alexander Allan (locomotive Engineer)
Alexander Allan (1809-1891) was a Scottish mechanical engineer. He was born at Montrose, Angus, in 1809 and died at Scarborough, Yorkshire on 2 June 1891. Biography Allan was born in Montrose, Angus, Scotland in 1809. He undertook a apprenticeship to Mr. Gibb, a millwright. In 1832 aged about 23 he took a position at Robert Stephenson and Company, Newcastle upon Tyne. By 1834 he had moved to Liverpool and taken up a position with George Forrester and Company who were about to begin building railway locomotives. Allan was works manager for George Forrester and Company until 1840. He was the engineer sent for a year to supervise the maintenance of the three Forrester engines ''Vauxhall'', ''Dublin'' and ''Kingstown'' for the first year of their service at Dublin and Kingstown Railway in 1834. From 1843 to 1853 he was Works Manager at the Crewe Works of the Grand Junction Railway, later London and North Western Railway, under Francis Trevithick. He later claimed the credit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scotland
Scotland is a Countries of the United Kingdom, country that is part of the United Kingdom. It contains nearly one-third of the United Kingdom's land area, consisting of the northern part of the island of Great Britain and more than 790 adjacent Islands of Scotland, islands, principally in the archipelagos of the Hebrides and the Northern Isles. To the south-east, Scotland has its Anglo-Scottish border, only land border, which is long and shared with England; the country is surrounded by the Atlantic Ocean to the north and west, the North Sea to the north-east and east, and the Irish Sea to the south. The population in 2022 was 5,439,842. Edinburgh is the capital and Glasgow is the most populous of the cities of Scotland. The Kingdom of Scotland emerged as an independent sovereign state in the 9th century. In 1603, James VI succeeded to the thrones of Kingdom of England, England and Kingdom of Ireland, Ireland, forming a personal union of the Union of the Crowns, three kingdo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steam Locomotive
A steam locomotive is a locomotive that provides the force to move itself and other vehicles by means of the expansion of steam. It is fuelled by burning combustible material (usually coal, Fuel oil, oil or, rarely, Wood fuel, wood) to heat water in the locomotive's Boiler (power generation), boiler to the point where it becomes gaseous and its volume increases 1,700 times. Functionally, it is a steam engine on wheels. In most locomotives, the steam is admitted alternately to each end of its Steam locomotive components, cylinders in which pistons are mechanically connected to the locomotive's main wheels. Fuel and water supplies are usually carried with the locomotive, either on the locomotive itself or in a Tender (rail), tender coupled to it. #Variations, Variations in this general design include electrically powered boilers, turbines in place of pistons, and using steam generated externally. Steam locomotives were first developed in the United Kingdom of Great Britain an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beam Engine
A beam engine is a type of steam engine where a pivoted overhead Beam (structure), beam is used to apply the force from a vertical piston to a vertical connecting rod. This configuration, with the engine directly driving a pump, was first used by Thomas Newcomen around 1705 to remove water from mines in Cornwall. The efficiency of the engines was improved by engineers including James Watt, who added a separate Condenser (heat transfer), condenser; Jonathan Hornblower and Arthur Woolf, who Compound steam engine, compounded the cylinders; and William McNaught (Glasgow), William McNaught, who devised a method of compounding an existing engine. Beam engines were first used to pump water out of mines or into canals but could be used to pump water to supplement the flow for a waterwheel powering a watermill, mill. The rotative beam engine is a later design of beam engine where the connecting rod drives a flywheel by means of a Crank (mechanism), crank (or, historically, by means of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Slide-valve Cylinder, Section (Heat Engines, 1913)
The slide valve is a rectilinear valve used to control the admission of steam into and emission of exhaust from the cylinder of a steam engine. Use In the 19th century, most steam locomotives used slide valves to control the flow of steam into and out of the cylinders. In the 20th century, slide valves were gradually superseded by piston valves, particularly in engines using superheated steam. There were two reasons for this: * With piston valves, the steam passages can be made shorter. This reduces resistance to the flow of steam and improves efficiency. * It is difficult to lubricate slide valves adequately in the presence of superheated steam. Murdoch's D slide valve The D slide valve, or more specifically Long D slide valve, is a form of slide valve, invented by William Murdoch and patented in 1799. It is named after the hollow central D-sectioned piston. This valve worked by "connecting the upper and lower valves so as to be worked by one rod or spindle, and in mak ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
