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Table Engine
A table engine is a variety of stationary steam engine where the cylinder is placed on top of a table-shaped base, the legs of which stand on the baseplate which locates the crankshaft bearings. The piston rod protrudes from the top of the cylinder and has fixed to it a cross-head which runs in slides attached to, and rising from, the cylinder top. Long return rods connect the crosshead to the crankshaft, on which is fixed the flywheel. This pattern of engine was first introduced by James Sadler at the Portsmouth Dockyard in 1798 and was house-built in that its framing was formed by the engine house, as had been common practice for beam engines. Henry Maudslay patented an improved version of this a few years later, and other makers adopted the configuration. It was supplied for low-speed, low-power applications around the first half of the nineteenth century. They continued to be made in a range of sizes, down to very small, with a bore and stroke of only a few inches. The tab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steam Engine, Bygones Museum, Claydon - Geograph-1687594-by-Chris-Allen
Steam is a substance containing water in the gas phase, and sometimes also an aerosol of liquid water droplets, or air. This may occur due to evaporation or due to boiling, where heat is applied until water reaches the enthalpy of vaporization. Steam that is saturated or superheated is invisible; however, "steam" often refers to wet steam, the visible mist or aerosol of water droplets formed as water vapor condenses. Water increases in volume by 1,700 times at standard temperature and pressure; this change in volume can be converted into mechanical work by steam engines such as reciprocating piston type engines and steam turbines, which are a sub-group of steam engines. Piston type steam engines played a central role in the Industrial Revolution and modern steam turbines are used to generate more than 80% of the world's electricity. If liquid water comes in contact with a very hot surface or depressurizes quickly below its vapor pressure, it can create a steam explosion. Types ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stationary Steam Engine
Stationary steam engines are fixed steam engines used for pumping or driving mills and factories, and for power generation. They are distinct from locomotive engines used on railways, traction engines for heavy steam haulage on roads, steam cars (and other motor vehicles), agricultural engines used for ploughing or threshing, marine engines, and the steam turbines used as the mechanism of power generation for most nuclear power plants. They were introduced during the 18th century and widely made for the whole of the 19th century and most of the first half of the 20th century, only declining as electricity supply and the internal combustion engine became more widespread. Types of stationary steam engine There are different patterns of stationary steam engines, distinguished by the layout of the cylinders and crankshaft: * Beam engines have a rocking beam providing the connection between the vertical cylinder and crankshaft. *Table engines have the crosshead above the vert ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Return Connecting Rod Engine
A return connecting rod, return piston rod or (in marine parlance) double piston rod engine or back-acting engine is a particular layout for a steam engine. The key attribute of this layout is that the piston rod emerges from the cylinder to the crosshead, but the connecting rod then reverses direction and goes ''backwards'' to the crankshaft. This layout is compact, but has mechanical disadvantages. Return connecting rod engines were thus rarely used. The return connecting rod layout has two possible forms: * The cylinder is between the crosshead and the crankshaft. This requires long connecting rods. To avoid unbalanced forces on the crosshead, these rods are usually paired and run either side of the cylinder. * The crankshaft is between the crosshead and cylinder. This requires a paired piston rod or yoke, so as to pass around the crankshaft. Both horizontal and vertical arrangements have used the return connecting rod layout. Vertical return connecting rod engines used the or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
James Sadler (balloonist)
James Sadler (February 1753 – 28 March 1828) was the first English balloonist, as well as a chemist and pastry chef. Life Sadler worked as a pastry chef in the family business, The Lemon Hall Refreshment House, a small shop in Oxford. Sadler was the second person to make a balloon ascent in England, very soon after the Tuscan Vincent Lunardi's flight on 15 September 1784 in the grounds of the Honourable Artillery Company at Moorfields. James Sadler was still the first English Aeronaut, making his ascent the following month, on 4 October 1784 from Christ Church Meadow, Oxford. The balloon rose to about and landed near Woodeaton, around away. Sadler's second ascent occurred on 12 November, this time in a hydrogen-filled balloon. It reached Aylesbury in Buckinghamshire after a twenty-minute flight. In May of the following year he took off near Moulsey Hurst, Surrey, accompanied by W. Wyndham MP, hoping to reach France, but in fact descending in the Thames Estuary, and t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portsmouth Block Mills
The Portsmouth Block Mills form part of the Portsmouth Dockyard at Portsmouth, Hampshire, England, and were built during the Napoleonic Wars to supply the British Royal Navy with pulley blocks. They started the age of mass-production using all-metal machine tools and are regarded as one of the seminal buildings of the British Industrial Revolution. They are also the site of the first stationary steam engines used by the Admiralty. Since 2003 English Heritage has been undertaking a detailed survey of the buildings and the records relating to the machines. Development of Portsmouth Dockyard The Royal Navy had evolved with Britain's development by the middle of the eighteenth century into what has been described as the greatest industrial power in the western world. The Admiralty and Navy Board began a programme of modernisation of dockyards at Portsmouth and Plymouth such that by the start of the war with Revolutionary France they possessed the most up-to-date fleet facilities i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
House-built Engine
A house-built engine is a stationary steam engine that is built into an engine house, such that it uses the masonry of the engine house as an integral part of the support of the engine. Beam engines Most house-built engines were early beam engines. A 'bob wall' in the engine house supported the pivot axle of the beam or 'bob'. This wall could be an internal wall, with both ends of the beam inside the house, but it was commonly the end wall of the house and so the beam projected to the outside. For a heavy beam, the bob wall was required to be extremely substantial. Early engines were used for pumping mines or wells, so as well as the weight of the beam, the house had to also support the weight of the long pump rod, reaching down to the depths of the mine. Beam engines appeared during the 18th century. The only technologies at this time that could support the weight of an engine's beam were masonry and timber-framing, as the work of either shipwrights or millwrights. Cast iro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
House-built Engine
A house-built engine is a stationary steam engine that is built into an engine house, such that it uses the masonry of the engine house as an integral part of the support of the engine. Beam engines Most house-built engines were early beam engines. A 'bob wall' in the engine house supported the pivot axle of the beam or 'bob'. This wall could be an internal wall, with both ends of the beam inside the house, but it was commonly the end wall of the house and so the beam projected to the outside. For a heavy beam, the bob wall was required to be extremely substantial. Early engines were used for pumping mines or wells, so as well as the weight of the beam, the house had to also support the weight of the long pump rod, reaching down to the depths of the mine. Beam engines appeared during the 18th century. The only technologies at this time that could support the weight of an engine's beam were masonry and timber-framing, as the work of either shipwrights or millwrights. Cast iro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beam Engine
A beam engine is a type of steam engine where a pivoted overhead 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; Jonathan Hornblower and Arthur Woolf, who compounded the cylinders; and 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 mill. The rotative beam engine is a later design of beam engine where the connecting rod drives a flywheel by means of a crank (or, historically, by means of a sun and planet gear). These beam engines could be used to directly power the line-shafting in a mill. They also c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henry Maudslay
Henry Maudslay ( pronunciation and spelling) (22 August 1771 – 14 February 1831) was an English machine tool innovator, tool and die maker, and inventor. He is considered a founding father of machine tool technology. His inventions were an important foundation for the Industrial Revolution. Maudslay's invention of a metal lathe to cut metal, circa 1800, enabled the manufacture of standard screw thread sizes. Standard screw thread sizes allowed interchangeable parts and the development of mass production. Early life Maudslay was the fifth of seven children of Henry Maudslay, a wheelwright in the Royal Engineers, and Margaret (''nee'' Whitaker), the young widow of Joseph Laundy. His father was wounded in action and so in 1756 became an 'artificer' at the Royal Arsenal, Woolwich (then in Kent), where he remained until 1776 and died in 1780. The family lived in an alley that no longer exists, off Beresford Square, between Powis Street and Beresford Street. Career Maudslay be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Light Steam Power
''Light Steam Power'' was a magazine dedicated to amateur and small-scale interest in steam power. Its masthead for some years described itself as, ''"Authentic World News on Steam Power for Cars, Launches and Small Stationary Units"''. Publishing history The magazine was self-published by its editor John Ness Walton of Kirk Michael, Isle of Man. It began when he took over an earlier magazine, ''Steam Car Developments and Steam Marine Motors'' in 1945, renaming this in 1949. For most of its existence it was published bi-monthly, although the first and last volumes were published at three- and four-month intervals. In its last years, from 1977 it changed its name to ''Steam Power'' and re-located to Loughborough. The magazine continued under this name until 1981. In more recent years, there was a website maintaining the magazine's archives, but this has now gone. In 2009 an agreement was made with the National Steam Car Association for them to hold the rights to ''Light Steam Powe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richard Trevithick
Richard Trevithick (13 April 1771 – 22 April 1833) was a British inventor and mining engineer. The son of a mining captain, and born in the mining heartland of Cornwall, Trevithick was immersed in mining and engineering from an early age. He was an early pioneer of steam-powered road and rail transport, and his most significant contributions were the development of the first high-pressure steam engine and the first working railway steam locomotive. The world's first locomotive-hauled railway journey took place on 21 February 1804, when Trevithick's unnamed steam locomotive hauled a train along the tramway of the Penydarren Ironworks, in Merthyr Tydfil, Wales. Turning his interests abroad Trevithick also worked as a mining consultant in Peru and later explored parts of Costa Rica. Throughout his professional career he went through many ups and downs and at one point faced financial ruin, also suffering from the strong rivalry of many mining and steam engineers of the day. Durin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stationary Steam Engines
In addition to its common meaning, stationary may have the following specialized scientific meanings: Mathematics * Stationary point * Stationary process * Stationary state Meteorology * A stationary front is a weather front that is not moving Physics * A time-invariant system quantity, such as a constant position or temperature * A steady state physical process, such as a vibration at constant amplitude and frequency or a steady fluid flow * A stationary wave is a standing wave * Stationary spacetime In general relativity, specifically in the Einstein field equations, a spacetime is said to be stationary if it admits a Killing vector that is asymptotically timelike. Description and analysis In a stationary spacetime, the metric tensor comp ... in general relativity Other uses * "Stationary", a song from ''Copacetic'' (Knuckle Puck album) {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
