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Mill Race
A mill race, millrace or millrun, mill lade (Scotland) or mill leat (Southwest England) is the current of water that turns a water wheel, or the channel ( sluice) conducting water to or from a water wheel. Compared with the broad waters of a mill pond, the narrow current is swift and powerful. The race leading to the water wheel on a wide stream or mill pond is called the head race (or headraceDictionary.com, word definition), and the race leading away from the wheel is called the tail raceChamber's Twentieth Century Dictionary, 1968, p=674 (or tailrace). A mill race has many geographically specific names, such as ''leat, lade, flume, goit, penstock''. These words all have more precise definitions and meanings will differ elsewhere. The original undershot waterwheel, described by Vitruvius, was a 'run of the river wheel' placed so a fast flowing stream would press against and turn the bottom of a bucketed wheel. In the first meaning of the term, the millrace was the stream; in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mill Race, Redbournbury Mill - Geograph
Mill may refer to: Science and technology * * Mill (grinding) * Milling (machining) * Millwork * Textile mill * Steel mill, a factory for the manufacture of steel * List of types of mill * Mill, the arithmetic unit of the Analytical Engine early computer People * Andy Mill (born 1953), American skier * Frank Mill (born 1958), German footballer * Harriet Taylor Mill (1807–1858), British philosopher and women's rights advocate * Henry Mill (c. 1683–1771), English inventor who patented the first typewriter * James Mill (1773–1836), Scottish historian, economist and philosopher * John Mill (theologian) (c. 1645–1707), English theologian and author of ''Novum Testamentum Graecum'' * John Stuart Mill (1806–1873), British philosopher and political economist, son of James Mill * Meek Mill, Robert Rihmeek Williams (born 1987), American rapper and songwriter Places * Mill en Sint Hubert, a Dutch municipality * Mill, Netherlands, a Dutch village * Mill, Missouri, a community in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
River Meon
The River Meon () is a chalk stream in Hampshire in the south of England. It rises at East Meon then flows in a generally southerly direction to empty into the Solent at Hill Head near Stubbington.Hampshire County Council (2006). Activities at Titchfield Haven - River Study''. Retrieved March 19, 2005. Above Wickham, the river runs through the South Downs National Park. Course The River Meon rises one mile (1.6 km) south of the village centre of East Meon. It flows due north, then northwest to West Meon, and southwest to Warnford followed by its characteristic, quite straight, south-southwest course, with many tiny wobbles in short stretches. The river descends through the villages of Exton, Corhampton and Meonstoke, Droxford, Wickham, and Titchfield. The river outflows over of estuary through the marshes of the Titchfield Haven National Nature Reserve to enter the Solent through a small harbour at Hill Head.Ordnance Survey (2005). ''OS Explorer Map 119 - Meon Valley, P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Watermill
A watermill or water mill is a mill that uses hydropower. It is a structure that uses a water wheel or water turbine to drive a mechanical process such as milling (grinding), rolling, or hammering. Such processes are needed in the production of many material goods, including flour, lumber, paper, textiles, and many metal products. These watermills may comprise gristmills, sawmills, paper mills, textile mills, hammermills, trip hammering mills, rolling mills, wire drawing mills. One major way to classify watermills is by wheel orientation (vertical or horizontal), one powered by a vertical waterwheel through a gear mechanism, and the other equipped with a horizontal waterwheel without such a mechanism. The former type can be further divided, depending on where the water hits the wheel paddles, into undershot, overshot, breastshot and pitchback (backshot or reverse shot) waterwheel mills. Another way to classify water mills is by an essential trait about their location: tide mills ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Penstock
A penstock is a sluice or gate or intake structure that controls water flow, or an enclosed pipe that delivers water to hydro turbines and sewerage systems. The term is inherited from the earlier technology of mill ponds and watermills. Hydroelectric systems and dams Penstocks for hydroelectric installations are normally equipped with a gate system and a surge tank. They can be a combination of many components such as anchor block, drain valve, air bleed valve, and support piers depending on the application. Flow is regulated by turbine operation and is nil when turbines are not in service. Penstocks, particularly where used in polluted water systems, need to be maintained by hot water washing, manual cleaning, antifouling coatings, and desiccation. The term is also used in irrigation dams to refer to the channels leading to and from high-pressure sluice gates. Penstocks are also used in mine tailings dam construction. The penstock is usually situated fairly close to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leat
A leat (; also lete or leet, or millstream) is the name, common in the south and west of England and in Wales, for an artificial watercourse or aqueduct dug into the ground, especially one supplying water to a watermill or its mill pond. Other common uses for leats include delivery of water for hydraulic mining and mineral concentration, for irrigation, to serve a dye works or other industrial plant, and provision of drinking water to a farm or household or as a catchment cut-off to improve the yield of a reservoir. According to the ''Oxford English Dictionary'', ''leat'' is cognate with ''let'' in the sense of "allow to pass through". Other names for the same thing include ''fleam'' (probably a leat supplying water to a mill that did not have a millpool). In parts of northern England, for example around Sheffield, the equivalent word is ''goit''. In southern England, a leat used to supply water for water-meadow irrigation is often called a ''carrier'', ''top carrier'', or ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canal Pound
A canal pound (from impound), reach, or level (American usage), is the stretch of level water impounded between two canal locks. Canal pounds can vary in length from the non-existent, where two or more immediately adjacent locks form a lock staircase, to many kilometres/miles. The longest canal pound in the United Kingdom is between the stop lock on the Trent and Mersey Canal at Preston Brook (Dutton Stop Lock No 76) and the start of the Leeds and Liverpool Canal near Leigh (Poolstock Bottom Lock No 2), a distance of . Another long pound is on the Kennet and Avon Canal between Wootton Rivers Bottom Lock and Caen Hill top lock. The longest level on the Erie Canal in New York was the 60 mile level (actually ) between Henrietta and Lockport. History Pounds came into being with the development of pound locks to replace the earlier flash locks. A key feature of pound locks was that the intervening level between locks remained largely constant, as opposed to the variable levels created ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genesee River
The Genesee River is a tributary of Lake Ontario flowing northward through the Twin Tiers of Pennsylvania and New York in the United States. The river provided the original power for the Rochester area's 19th century mills and still provides hydroelectric power for downtown Rochester. Geology The Genesee is the remaining western branch of a preglacial system, with rock layers tilted an average of 40 feet (12 m) per mile, so the river flows across progressively older bedrock as it flows northward. It begins in exposing the Allegheny Plateau's characteristic conglomerates: sandstones and shales in the of the Mississippian and Pennsylvanian subperiods. Thereafter, further downstream as it traverses the area known as ''The Grand Canyon of the East'',Letchworth State Park accessdate=2016-06-05 where it falls (three times) through ov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oconaluftee (Great Smoky Mountains)
Oconaluftee Archeological District is within the eponymous river valley in the Great Smoky Mountains of North Carolina, located in the Southeastern United States. Formerly a historic Cherokee village, followed by an Appalachian community, were located at this site along the Oconaluftee River. Now the site serves as the main entrance to the North Carolina side of the Great Smoky Mountains National Park. The Oconaluftee area parallels the Oconaluftee River as its basin gradually broadens from Smokemont in the north to the southern tip of the Qualla Boundary. The Qualla Boundary, commonly known as Cherokee, North Carolina, comprises the bulk of a federal trust that serves as a reservation for the federally recognized tribe, Eastern Band of the Cherokee. The Oconaluftee Visitor Center, Mingus Mill, and the Mountain Farm Museum are all located in this area. Most is part of the Oconaluftee Archaeological District, which was listed on the National Register of Historic Places in 1982. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cogglesford Mill
Cogglesford Mill (sometimes referred to as Coggesford) is a Grade II listed working watermill in Sleaford, Lincolnshire. It is possibly the last working Sheriff's Mill in England. Location The mill sits to the north of Sleaford on banks of River Slea. The ford from which the mill takes its name is where the Roman road, now called Mareham Lane, crossed the Slea. The original crossing, no longer extant, is a few hundred yards downstream of the mill, close to the current footbridge. History There is archaeological evidence of a Saxon mill on the site and records in the Domesday book of later mills; the present redbrick structure dates to the mid to late 18th century, with alterations from the 19th century. There were many other mills along the river at various times. During the construction of the Sleaford Navigation, in the 1790s, locks were provided at each of the mills to maintain the necessary head of water. After the navigation closed and as the locks fell into disrepair t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Millpond
A mill pond (or millpond) is a body of water used as a reservoir for a water-powered mill. Description Mill ponds were often created through the construction of a mill dam or weir (and mill stream) across a waterway. In many places, the common proper name Mill Pond has remained even though the mill has long since gone. It may be fed by a man-made stream, known by several terms including leat and'' mill stream.'' The channel or stream leading from the mill pond is the mill race, which together with weirs, dams, channels and the terrain establishing the mill pond, delivers water to the mill wheel to convert potential and/or kinetic energy of the water to mechanical energy by rotating the mill wheel. The production of mechanical power is the purpose of this civil engineering hydraulic system. The term mill pond is often used colloquially and in literature to refer to a very flat body of water. Witnesses of the loss of RMS Titanic RMS ''Titanic'' was a British passenge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Wheel
A water wheel is a machine for converting the energy of flowing or falling water into useful forms of power, often in a watermill. A water wheel consists of a wheel (usually constructed from wood or metal), with a number of blades or buckets arranged on the outside rim forming the driving car. Water wheels were still in commercial use well into the 20th century but they are no longer in common use. Uses included milling flour in gristmills, grinding wood into pulp for papermaking, hammering wrought iron, machining, ore crushing and pounding fibre for use in the manufacture of cloth. Some water wheels are fed by water from a mill pond, which is formed when a flowing stream is dammed. A channel for the water flowing to or from a water wheel is called a mill race. The race bringing water from the mill pond to the water wheel is a headrace; the one carrying water after it has left the wheel is commonly referred to as a tailrace. Waterwheels were used for various purposes from ag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weir
A weir or low head dam is a barrier across the width of a river that alters the flow characteristics of water and usually results in a change in the height of the river level. Weirs are also used to control the flow of water for outlets of lakes, ponds, and reservoirs. There are many weir designs, but commonly water flows freely over the top of the weir crest before cascading down to a lower level. Etymology There is no single definition as to what constitutes a weir and one English dictionary simply defines a weir as a small dam, likely originating from Middle English ''were'', Old English ''wer'', derivative of root of ''werian,'' meaning "to defend, dam". Function Commonly, weirs are used to prevent flooding, measure water discharge, and help render rivers more navigable by boat. In some locations, the terms dam and weir are synonymous, but normally there is a clear distinction made between the structures. Usually, a dam is designed specifically to impound water behind ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
