About the simple machine Infobox Machine name Lever image Palanca ejemplo.jpg caption Levers can be used ... inventor examples A lever is constructed from a beam structure beam attached to ground by a hinge , or wiktionary .... The word comes from the French language French lever , to raise , cf. a wiktionary levant levant . A lever amplifies an input force to provide a greater output force, which is said to provide leverage. The ratio of the output force to the input force is the mechanical advantage of the lever. Early use Image Archimedes lever Small .jpg thumb right This is an engraving from Mechanics Magazine ... BC and were provided by Archimedes . Give me a place to stand, and I shall move the Earth with a lever ... used the lever to move and uplift obelisks weighting more than 100 tons. ref cite book ... Publishing year 2003 page 28 isbn 9780766135246 ref Force and levers A lever is a beam connected to ground by a hinge, or pivot, called a fulcrum. The ideal lever does not dissipate or store energy, which means there is no friction in the hinge or bending in the beam. In this case, the power into the lever ... from the fulcrum to the points of application of these forces. This is known as the law of the lever ... force known as the Moment physics moment or torque . Classes of levers File Lever PSF .png thumb ... for the 1st class lever, the resistance is in the middle for the 2nd class lever, and the effort is in the middle for the 3rd class lever. This characterization of the real versus ideal is covered in the definition of the ideal lever above In the real world For the classical mechanics formulae to work, or to be a good approximation of real world applications, the lever must be made from a combination ... or may not be significant. Law of the lever Image Lever Principle 3D.png thumb right A lever in balance The lever is a movable bar that pivots on a fulcrum attached to a fixed point. The lever operates by applying forces at different distances from the fulcrum, or pivot. Assuming the lever does ... more details
Lafayette , LaFayette , or La Fayette may refer to TOC right People General Gilbert du Motier, marquis de Lafayette 1757 1834 , French general and American Revolutionary War general Adrienne de La Fayette 1759 1807 , wife of marquis de Lafayette Georges Washington de La Fayette 1779 1849 , son of marquis de Lafayette Madame de La Fayette 1634 1693 , French author Louise de La Fayette 1618 1665 , maid of honor to Anne of Austria Lafayette Ronald Hubbard 1911 1986 , better known as L. Ron Hubbard, science fiction author and founder of Scientology James Armistead Lafayette circa 1760 1830 , aka James Armistead, African American Revolutionary War spy James Lafayette , pseudonym of James Stack Lauder 1853 1923 , a late Victorian and Edwardian portrait photographer LafayetteLever , also known as Fat Lever , former professional basketball player The Great Lafayette, stage name of illusionist Sigmund Neuberger 1871 1911 United States geography Elliston Lafayette, Virginia La Fayette, Alabama Lafayette, California Lafayette, Colorado LaFayette, Georgia La Fayette, Illinois Lafayette, Indiana LaFayette, Kentucky Lafayette, Louisiana Lafayette, Minnesota LaFayette, New York Lafayette, Ohio , a village in Allen County Lafayette, Madison County, Ohio , an unincorporated community Lafayette, Oregon Lafayette, Tennessee Lafayette, Chippewa County, Wisconsin , a town Lafayette, Monroe County, Wisconsin , a town Lafayette, Walworth County, Wisconsin , a town Lafayette Parish, Louisiana Lake Lafayette, Missouri Mount Lafayette , in New Hampshire West Lafayette, Indiana West Lafayette, Ohio seealso Lafayette County disambiguation Lafayette Township disambiguation Lafayette Hill disambiguation Lafayette Park disambiguation Lafayette Square disambiguation United States education Lafayette College , independent, undergraduate, coeducational, residential institution Lafayette High School Buffalo , the oldest public school in Buffalo that remains in its original building Lafayette High School ... more details
Lever is a surname. People with that name include Johnny Lever , a Bollywood actor William Lever, 1st Viscount Leverhulme , English industrialist and Member of Parliament the primary founder of Lever Brothers . LafayetteLever , an American professional basketball player in the NBA Sir Hardman Lever, 1st Baronet Tim Lever , a former member of British pop group Dead or Alive John Lever , a left arm fast medium bowler Darcy Lever author Darcy Lever , a nineteenth century British author and expert in seamanship Charles Lever , an Irish novelist of English descent Eddie Lever , the manager of the English football club Portsmouth F.C. from 1952 1958 Mark Lever , a former English footballer. Harold Lever, Baron Lever of Manchester Ashton Lever 1729 1788 , an English collector of natural objects Don Lever , aprofessional ice hockey left winger Henry W. Lever , the tenth head college football coach for the Carroll College Arthur Lever footballer Leslie Lever, Baron Lever Arthur Lever Asbury Francis Lever January 5, 1875 April 28, 1940 was a member of the United States House of Representatives from South Carolina. Philip Lever, 3rd Viscount Leverhulme Harry Lever born January 5, 1886 was an Australian rules footballer who played with St Kilda in the VFL Charles Lever August 31, 1806 June 1, 1872 was an Irish novelist of English descent. See also Lever disambiguation surname Lever ... more details
kings news kings hire lever.html NBA.com Kings Hire Lafayette Fat Lever as Director of Player Development ... Persondata . NAME Lever, Lafayette ALTERNATIVE NAMES SHORT DESCRIPTION DATE OF BIRTH August 18, 1960 PLACE OF BIRTH Pine Bluff, Arkansas DATE OF DEATH PLACE OF DEATH DEFAULTSORT Lever, Lafayette ... Category Denver Nuggets players Category Dallas Mavericks players es LafayetteLever fr Fat Lever it Fat Lever ja ...BLP sources date April 2008 Infobox NBA biography name Fat Lever image width caption number 12, 21 position Point guard height ft 6 height in 3 weight lb 170 birth date birth date and age 1960 08 18 birth place Pine Bluff, Arkansas Pine Bluff , Arkansas nationality United States American high school Pueblo Magnet High School Pueblo Tucson, Arizona Tucson , Arizona college Arizona State Sun Devils Arizona State 1978 1982 draft year 1982 draft round 1 draft pick 11 draft team Portland Trail Blazers career start 1982 career end 1994 years1 nbay 1982 start nbay 1983 end team1 Portland Trail Blazers years2 nbay 1984 start nbay 1989 end team2 Denver Nuggets years3 nbay 1990 start nbay 1993 end team3 Dallas Mavericks highlights nowiki nowiki 2 List of NBA All Stars NBA All Star nasg 1988 , nasg 1990 ... 19 World Championship 1979 Salvador United States national basketball team National team Lafayette Fat Lever born August 18, 1960, in Pine Bluff, Arkansas is a retired United States American professional ... director of player development fat lever ref . Lever also serves as the color analyst for the Kings radio broadcasts. ref http www.nba.com kingsnba kings bball101 release 2011 08 01.html ref Lever was selected ... against the Chicago Bulls , with 31 points, 12 assists, 16 rebounds and 6 steals. Lever was traded ... basketball Michael Adams , for the Bullets first round pick in the 1991 Draft. Lever sat out the entire ... playoff game the others being Jason Kidd and Wilt Chamberlain . Among Lever s career achievements ... more details
Wiktionarypar leverLever is a rigid object used to multiply a mechanical force. Lever may also refer to Lever, Portugal , a town in Portugal Lever parish, Portugal , a parish in Portugal Lever Brothers , a soap detergent business now part of Unilever Lever escapement , a key component of the typical movement in mechanical timepieces See also Lever surname Leverage disambiguation disambig ... more details
Leslie Maurice Lever, Baron Lever 29 April 1905&ndash 26 July 1977 was a United Kingdom British Labour Party UK Labour politician. He was Member of Parliament for Manchester Ardwick UK Parliament constituency Manchester Ardwick from United Kingdom general election, 1950 1950 to United Kingdom general election, 1970 1970 , when he retired. Subsequently, he was given a life peerage as Baron Lever , of Ardwick in the City of Manchester in 1975. He was educated at Manchester Grammar School and read Law at University of Leeds Leeds University . He was a solicitor and poor man s lawyer between 1928 and the advent of Legal Aid in 1948, funding his impecunious clients cases out of his own pocket if they lost. His younger sister and three younger brothers were all lawyers, his brother Harold Lever, Baron Lever of Manchester Harold also being a Member of Parliament. He was a notable List of Lord Mayors of Manchester Lord Mayor of Manchester 1957 58 famous in his year of office for attending 2,700 official engagements. His political career both as a councillor and member of Parliament representing inner city slum areas was more concerned with defending the poor than conventional party politics. His other principal interests were denominational education and proper pensions for war widows and limbless ex servicemen. He was knighted by Pope John XXIII and by Pope Paul VI Knight Grand Cross of St Gregory the Great in the 1960s and by the Elizabeth II of the United Kingdom Queen in 1970 for his philanthropic work. He died in Manchester aged 72. References Rayment Rayment hc External links Hansard contribs mr leslie lever Leslie Lever s start s par uk succession box title Member of Parliament for Manchester Ardwick UK Parliament constituency Manchester Ardwick years United Kingdom general ... Persondata . NAME Lever, Leslie ALTERNATIVE NAMES SHORT DESCRIPTION British politician DATE OF BIRTH 1905 PLACE OF BIRTH DATE OF DEATH 1977 PLACE OF DEATH DEFAULTSORT Lever, Leslie Category 1905 ... more details
There have been three Baronetcies created for persons with the surname Lever , all in the Baronetage of the United Kingdom . The Lever Baronetcy , of Hans Crescent in Chelsea, was created in the Baronetage of the United Kingdom on 8 February 1911 for the Liberal Party UK Liberal politician Arthur Lever . Born Arthur Levy, he assumed the surname of Lever in lieu of Levy by deed poll in 1896 and by Royal license in 1911. The second Baronet was an author of historical works such as The Life and Times of Sir Robert Peel 1942 and The House of Pitt 1947 . The third Baronet is a writer on nature and wildlife. Sir Maurice Levy, 1st Baronet Maurice Levy , elder brother of the first Baronet, was created a Baronet in 1913 see Levy Baronets . The Lever Baronetcy , of Thornton Manor , was created in the Baronetage of the United Kingdom on 6 July 1911. For more information on this creation, see the Viscount Leverhulme . The Lever Baronetcy , of Allerton in the County of Lancaster, was created in the Baronetage of the United Kingdom on 3 February 1920 for the accountant and civil servant Hardman Lever . The title became extinct on his death in 1947. Lever Baronets, of Hans Crescent 1911 Sir Arthur Lever, 1st Baronet Sir Arthur Levy Lever, 1st Baronet 1860 1924 Sir Tresham Joseph Philip Lever, 2nd Baronet 1900 1975 Sir Tresham Christopher Arthur Lindsay Lever, 3rd Baronet b. 1932 There is no heir to the baronetcy. Lever Baronets, of Thornton Manor 1911 see the Viscount Leverhulme Lever Baronets, of Allerton 1920 Sir Hardman Lever, 1st Baronet Sir Samuel Hardman Lever, 1st Baronet 1869 1947 References Kidd, Charles, Williamson, David editors . Debrett s Peerage and Baronetage 1990 edition . New York St Martin s Press, 1990. rayment b DEFAULTSORT Lever Category Baronetcies Category Extinct baronetcies ... more details
Lever & Kitchen were a major manufacturer, now part of Unilever . Related businesses included Lever Brothers Lever Brothers Pty. Ltd. Lever Brothers Factory, Balmain J. Kitchen & Sons Ltd Rexona Pty. Ltd. W. H. Burford & Son Australian Producers Partnership Pty Ltd. Apollo Soap and Candle factory Bunyip Soaps Crompton Bunyip Soaps Ltd dab ... more details
The front lever is a gymnastic move a static hold normally performed on the rings gymnastics still rings . A front lever is performed by lowering from an inverted hang until the body is completely horizontal and straight with the front of the body facing upwards. An accomplished gymnast may also pull directly into the horizontal position from a dead hang. Front levers require a high degree of back and core strength. Image FrontLever 1962 .JPG thumb right 300px Front lever John Gill, 6 2 , 180 lbs 1962 The move is rated A in the gymnastic code of points, a scale from A to F, with F being the most difficult. In the 1960s it was rated B, when the levels of difficulty were A, B, C. Clearly, body length is a factor. It is possible that world class gymnasts are shorter now than during mid 20th century The top American gymnast in 1956 was John Beckner 6 1 ref The Modern Gymnast Magazine Modern Gymnast , December 1956, Page 12 ref , whereas the 2004 Olympic Games Olympic champion American gymnast, Paul Hamm , is 5 4 . Variations Tuck Front lever , done in a tight tuck with the knees pulled toward the chest. Much easier than a front lever. Victorian cross Image Onearmlever.jpg thumb 250px right Gill performing a one arm lever in the late 1960s. It approaches a side lever as the arm is not in front of the body as with the bilateral front lever or back lever . A difficult static hold rated E in the code of points. In this variation the body is held at the level of the rings with arms extended laterally. One arm front lever A front lever held with just one arm. The body is often turned sideways in this variation Exercises based on the front lever Front lever pullups The body is kept horizontal while the gymnast performs a pullup. Ice cream makers In this variation the performer leans forward from the lever position, bringing the legs down and arms up until he she reaches the top of a regular ... lever References references See also Back lever Category Gymnastics manoeuvres ... more details
A back lever is a static hold performed on the Rings gymnastics rings . A back lever is rated as an A value skill on the Code of Points artistic gymnastics Code of Points , a scale from A to F, with F being the most difficult. A back lever is performed by lowering from an inverted hang until the gymnast s body is Parallel geometry parallel to the ground. Performing a back lever requires a high degree of strength in the chest and shoulders, a lot of core tension must be generated to stay Horizontal plane horizontal . See also Front lever External links http www.drillsandskills.com skills Rings A ria009 Back lever progressions http www.beastskills.com Back 20lever.htm Back Lever tutorial Category Gymnastics manoeuvres Gymnastics stub ... more details
otheruses Lever unreferenced date December 2007 Image LocalFregVNGaia Lever.svg thumb right 250px Location of Lever in Vila Nova de Gaia. Lever is a Portugal Portuguese List of towns in Portugal town and a List of parishes of Portugal parish in the municipality of Vila Nova de Gaia . It has a population of 3,033 2001 and an area of 6.88 km . Parishes of Vila Nova de Gaia coord 41 04 N 8 29 W display title region PT type city source GNS enwiki Category Parishes of Vila Nova de Gaia Category Towns in Portugal porto geo stub de Lever Vila Nova de Gaia es Lever pt Lever ru tr Lever ... more details
Image Highfield lever.png thumb 300px right A basic Highfield Lever. A Highfield lever is a lever device which allows tension to be rapidly set up in a wire and equally rapidly released to the required extent. It is frequently used in sailing boats where tension in some part of the rigging needs to be adjusted to a pre set amount as the wind impinges on one side of the sails or the other. It is typically used in running backstay s runners . To make it work, the backstay is led through a block or fairlead along the deck to a two legged, Lever Second class levers second order lever mounted with its fulcrum above deck level. The end of the runner is attached to a cross member between the two legs and part way along the lever. When the lever is moved away from the fairlead, tension is placed on the runner on a line below the fulcrum so that the lever is pulled down onto the deck. When the tension is to be released, the lever is thrown towards the fairlead. When released, the amount of slack in the runner is therefore twice the distance of the attachment point from the fulcrum. It is not necessary to have great leverage as the adjustment is made at a point in the manoeuvring of the boat when the rigging is slack. The significant point is that the lever should be designed to take up the required amount of slack. It is possible to arrange a highfield lever to work two backstays or shrouds by mounting the lever transversely so that it is thrown from side to side rather than fore and aft, tensioning the rigging on one side of the boat as it relaxes the other. The highfield lever was invented by the late Mr J. S. Highfield, an electrical engineer and rear commodore with the Royal Thames Yacht Club, in about 1930. http www.ybw.com cb gloss.html Highfield http books.google.co.uk books?id Fp63wWByImQC&pg PA145&lpg PA145&dq 22Highfield lever 22&source web&ots dtOvGn79kw&sig vDH04nBiAXxluXvIdcGcUdh3i U&hl en&sa X&oi book result&resnum 3&ct result The Language of Sailing Richard Mayne ... more details
Use dmy dates date April 2011 velyne Lever known simply in English as Evelyne Lever is a contemporary French historian and writer. ref name Interview with Lever Cite web title Interview with Lever url http www.linternaute.com savoir interview evelyne lever chat evelyne lever.shtml ref She is married to a French historian, Maurice Lever, who is the author of Sade . ref name Biography, Macmillan Cite web title Biography, Macmillan url http us.macmillan.com author evelynelever ref Lever was previously a research engineer at CNRS , and then began to focus more on 18th century history. In particular, she focuses on certain people, including Louis XVI , Marie Antoinette and Madame de Pompadour . Marie Antoinette The Last Queen of France was her first book to be published in the United States. ref name Biography, Macmillan It is less extensive than Lever s French version Marie Antoinette la derni re reine , and was written specifically for an American audience. ref name Interview with Lever She continues to write on and about 18th century history. ref name Interview with Lever Publications French 1792, les proc s de Louis XVI et de Marie Antoinette , Complexe Louis XVIII , Fayard, 1988 Louis XVI , Fayard, 1991 M moires du baron de Breteuil , dition critique, Paris, Fran ois Bourin, 1992 Marie Antoinette la derni re reine , Gallimard, coll. D couvertes , Paris, 2000 Madame de Pompadour ... and Marquise de Bombelles, prefaced by velyne Lever, Tallandier, 2005 C tait Marie Antoinette ... Lever Marie Antoinette Journal d une reine , Tallandier, coll. Texto , 2008 Le Chevalier d Eon Une vie sans queue ni t te , with Maurice Lever, Fayard, 2009 English Marie Antoinette The Last Queen ... . NAME Lever, Evelyne ALTERNATIVE NAMES SHORT DESCRIPTION DATE OF BIRTH PLACE OF BIRTH DATE OF DEATH PLACE OF DEATH DEFAULTSORT Lever, velyne Category Historians of France Category French non fiction ... historian stub fr velyne Lever ... more details
Model 1873 Rifle Lever action is a type of firearm action which uses a lever located around ... cartridges into the Chamber weaponry chamber of the Barrel firearms barrel when the lever is worked. Most lever action firearms are rifle s, but lever action shotgun s and a few pistol s have also been made. One of the most famous lever action firearm is undoubtedly the Winchester rifle , but many manufacturers notably Marlin Firearms Marlin and Savage Arms Savage also produce lever action rifles ... ammunition rim fire .22. While the term lever action generally implies a repeating firearm, it is also ... that use a lever for cycling, such as the Martini Henry or the Ruger No. 1 . History Image Marlin39receiver.jpg right thumb 300px Inside of Marlin 39A receiver The first significant lever action design was the Spencer repeating rifle , a magazine fed lever operated breech loading rifle designed by Christopher ... later designs, the early Spencer s lever only served to unlock the falling block action and load a new ... the lever was operated to prepare the rifle to fire. The Henry rifle , invented by Benjamin Tyler ... Company, New Haven, Connecticut, introduced Marlin s first lever action repeating rifle as the Model ... in production today. By the 1890s, lever actions had evolved into a form that would last for over a century. Both Marlin and Winchester released new model lever action rifles in 1894. The Marlin ... stage lever action, while the Winchester has a double stage lever. The double stage action is easily seen when the Winchester s lever is operated, as first the entire trigger group drops down, unlocking ... which became named the Model 99 lever action sporting rifles. The Models 1899 99 were produced from introduction in 1899 until the expense of producing the rifle, and declining interest in lever action ... Winchester and the Marlin lever action rifles, which used a tubular magazine requiring round nose or flat ... very expensive to produce when compared to the other lever action rifles, and the Savage bolt ... more details
File LeverHouseNewYork.JPG thumb Lever House , New York City Lever Brothers was a British manufacturer founded in 1885 by William Lever, 1st Viscount Leverhulme William Hesketh Lever 1851 1925 and his brother, James Darcy Lever 1854 1910 . The brothers had invested in and promoted a new soap making process invented by chemist William Hough Watson, it was a huge success. Lever Brothers merged with Margarine ... father, William Lever and his brother James entered the soap business in 1885 by buying a small soap ... accessdate July 09, 2011 ref Though the company was named Lever Brothers, William Lever s brother ... p 144 ref Employee welfare Lever Brothers was one of several British companies that took an interest ... Congo and the Solomon Islands . Lever Brothers Ltd also acquired other soap companies including ... district, named after William Lever. Lever Brothers rode the cresting late Victorian consumer revolution to build a vast industrial empire spread across the globe. Four years after William Lever s death ... multinational company. ref Lewis So Clean 2008 ref The Lever Brothers name was kept for a time as an imprint, as well as the name of the US subsidiary, Lever Brothers Company, and a Canadian subsidiary, Lever Brothers Ltd. Lever Brothers was sold to a US capital firm Pensler Capital Corporation and renamed Korex in 2008. Korex Don Valley assumed operations of the Lever Brothers Toronto plant. It has since closed and gone bankrupt. Presidents of Lever Brothers Among its presidents was Charles Luckman in the 1950s who would champion the construction of the Lever House in New York City. Luckman ... Station s Replacement, Dies at 89 New York Times January 28, 1999 ref See also Lever Brothers Factory, Balmain Lever Brothers Factory originally located in Balmain, New South Wales , Australia Port ... of Sunlight How William Lever Cleaned Up the World publisher Random House year 2005 isbn 9780552150873 ... Category Companies established in 1885 de Lever Brothers nl Lever Brothers ... more details
Infobox aviation name Thrust lever image Image Throttle Boeing 727.jpg caption Thrust levers in a Boeing 727 . The larger, clearly numbered levers control forward thrust. The smaller levers towards the top of the picture control reverse thrust. Notice the corresponding Aircraft engine position number engine number on each lever. Thrust levers are found in the cockpit of aircraft , and are used by the Pilot in command pilot , copilot , or autopilot to control the power output of the aircraft s engines . In multi engine aircraft, each thrust lever displays the Aircraft engine position number engine number of the engine it controls. Normally, there is one thrust lever for each engine. The thrust levers are normally found in the aircraft s center console, or on the dashboard of smaller aircraft. For aircraft equipped with thrust reverser s, the control for each thrust reverser is usually found adjacent to the corresponding engine s thrust lever. The position of each lever can be described by the current angle indicated. This is referred to as the Throttle Lever Angle or TLA . The greater the TLA, the greater the engine thrust. Throttle levers The throttle lever assembly is often designed to incorporate high pressure HP cock switches so that the pilot has instinctive control of the fuel supply to the engine. Microswitches are located in the throttle box so that the throttle levers actuate the switches to shut the valves when the levers are at their aft end of travel. Pushing the levers forward automatically operates the switches to open the fuel cocks, which remain open during the normal operating range of the levers. Two distinct actions are required to actuate the switches again. The throttle lever must be pulled back to its aft position and a mechanical latch operated, or a detent hard point overcome, to allow the lever to travel further and shut off the fuel valve. See also Autothrottle Aircraft gas turbine engine components Aircraft components Aviation lists Category ... more details
for the maritime author Darcy Lever author infobox UK place latitude 53.569 longitude 2.401 official name Darcy Lever population os grid reference SD735081 metropolitan borough Metropolitan Borough of Bolton ... East UK Parliament constituency Bolton South East static image static image caption Darcy Lever ... part of Lancashire , the village lies on the B6209 Radcliffe Road , between Bolton and Little Lever ... tearoom cite web url http villagetearoomatlittlelever.com tearoompage8.html title History of Darcy Lever accessdate March 12, 2011 ref History Toponymy Lever was recorded as Parua Lefre in 1212, from ... differ the pronunciation was similar to lever Lethre 1221 Leuere 1278 Leuir 1282 Leuer 1291 ... editor2 first J. title Little and Darcy Lever url http www.british history.ac.uk report.aspx ... 1911 1 October 2010 ref Initially, Lever was the name for the hamlets comprising the Manorialism manor of Lever. In 1509 it became Darcye Lever, the distinguishing affix coming from possession by the D Arcy family. ref cite web url http www.answers.com topic darcy lever little lever title Darcy Lever name accessdate March 12, 2011 ref Manor NOTE Until 1509 the area called Darcy Lever today was part of the Manor of Little Lever. In the text, where the name is given in italicized text with square brackets, it refers to the area of Darcy Lever before it gained that name. Darcy Lever dates to the Norman ... by Albert Greslet, the 1st Baron of Manchester . The Manorialism manor of Little Lever has, from early times, been split into Little Lever and Darcy Lever. The manor formed part of the barony ... dower of four oxgangs in Little Lever. ref Inq. and Extents, i, 129, 130, quoting Curia Regis R. 78, m. 14 d. ref so the Radcliffes probably held Little Lever between 1212 and 1221. The next lord is Leising de Lever who had part of Great Lever. Possibly descended from him was Adam de Lever who was living in 1246, ref Assize R. 404, m. 5 d. ref ancestor of the Levers of Little Lever, ref name cms ... more details
Image Fingernail Clippers.jpg thumb Nail clippers are a simple form of compound lever The compound lever is a simple machine operating on the premise that the resistance from one lever in a system of levers will act as power for the next, and thus the applied force will be amplified from one lever to the next as long as the mechanical advantage for each lever is greater than one . Almost all Weighing scale scale s use some sort of compound lever to work. Other examples include nail clippers and piano keys. Mechanical advantage Image Compound Lever example.jpg thumb left 480px A lever arm uses the wikt ... may prevent the use of a single lever to accomplish the desired result, ref Popular Mechanics ... of delivery of the resultant force, or the prohibitive length of the lever arm needed. In these conditions ... from first, second and or third order levers. In all types of compound lever, the rule is that force ... from one lever becomes the input for the next lever in the system, and so the advantage is magnified. The figure on the left illustrates a compound lever formed from two first class levers, along with a short ... kg could lift a weight of 7.5 lb or 7.5 kg . Alternately, if the position of the fulcrum on lever ... advantage. This is not usually the goal of a compound lever system, though in rare situations the geometry ... A handloading press uses a compound lever to reduce the force the operator must apply and confine the action to a relatively small space. A few examples of the compound lever are the scale, railway brake ... A compound lever translates the small movement of a piano key to the fast, hard strike of the hammer on the strings A piano key is a compound lever of the first class, since the fulcrum is between the weight to be moved and the power. The purpose of this lever is to translate a small movement depression ... a place to stand, and I shall move the earth with a lever is a remark attributed to Archimedes, who ... lever is attributed to the Birmingham inventor John Wyatt inventor John Wyatt in 1743, ref ... more details
Infobox building name Lever House image Lever House by David Shankbone.jpg image size 250px caption Lever ... ref emporis 114095 ref Lever House , designed by Gordon Bunshaft and Natalie de Blois of Skidmore, Owings ... as the highrise of the Europa Center in Berlin . History The Lever House was built in 1951 1952 to be the American headquarters of the British soap company Lever Brothers . It was the pet project of Lever ... content.cfm lever house Lever House project information on SOM.com ref . The curtain wall ... office facilities. On the third floor was the employees cafeteria and terrace. The offices of Lever ... York City Landmarks Preservation Commission designated Lever House as an official landmark . By that time, however, much of Lever House s original brilliance had been dimmed by time. The building ... glass. In September 1997, Unilever , Lever Brothers parent, announced it was moving its Lever Brothers division to Greenwich, CT . Following the announcement, Lever Brothers slowly began vacating the building ... www.som.com content.cfm lever house curtain wall replacement Lever House Curtain Wall Replacement .... ref cite web url http www.som.com content.cfm lever house curtain wall replacement title Lever House ... plans for Lever House but never realized. In 2003, Lever House Restaurant became the first business to operate as a restaurant at Lever House and later won New York Magazine s Best Service award in 2004. Lever House Restaurant closed in early 2009. As of October 2009, restaurant http www.casalever.com Casa Lever occupies the former Lever House Restaurant space. As of 2005, the building s tenants ... of the Lever House renovation, the building s plaza and lobby have been used as a gallery for the http www.leverhouseartcollection.com Lever House Art Collection . Exhibitions have included such works ... on display in the Lever House plaza. Exhibitions gallery Image Folkert de Jong by David Shankbone.JPG ... 2009, ISBN 3791340549 References reflist External links commonscat Lever House http www.greatbuildings.com ... more details
Image Leverframe.jpg thumb right 250px A mechanical lever frame inside the signal box at Knockcroghery in Ireland Mechanical railway signalling installations rely on lever frames for their operation to interlock ... area of control. The lever frame contains interlocking designed to ensure that the levers cannot be operated ... to the location controlled. The interlocking may be achieved mechanically or by electric lever ... lever operates an electrical circuit controller. In the UK, it is practice to cut short the handles ... to move them. Mechanical lever frames and interlocking have now largely been replaced by modern, much .... The world s largest lever frame 192 levers is thought to be in Spencer Street No.1 signal box in Melbourne, Australia. Variants Ground frames Image Ground frame kyle.jpg thumb right A three lever ground frame at Kyle of Lochalsh , released by Annett s key A ground frame is a small lever frame ... Co. Ltd. Style L Power Lever Frame The lever frame principle of operation was perpetuated in the earliest ... was still done mechanically, but in others, electric lever locks were used. Westinghouse Brake & Saxby Signal Co. Ltd. was one of the companies that produced miniature power lever frames. All electric power lever frames were produced from 1929 onwards earlier mechanical frames were produced before this date. In the UK, the Style L all electric miniature power lever frame was the most predominant on UK main line railways. The Style B & K miniature power lever frames were the historical ... miniature power lever frames initially Style B was used. Later on, Style N was introduced. This is a mechanically ... of lever functions To assist the operator in determining their functions, each lever in a frame will generally ... to right. A lever s identification may be painted on its side or engraved on a badge or plate fitted either to the lever or behind it. This may be accompanied by a description of the lever s function ... each lever number adjacent to symbols representing the items of equipment that they operate. Levers ... more details
Refimprove date March 2008 Image Anker 01.jpg thumb Inline or Swiss lever escapement. Image Paletteankerhemmung.gif thumb Detail of inline lever escapement, in movement. Image Chinese movement escapement and jewels.jpg thumb 250px A lever escapement in a mechanical watch The lever escapement is a key ... watch es and many small mechanical non pendulum clock s. The invention of the lever escapement is attributed .... These pallets are attached solidly to the lever, which has at its end a fork to receive the ruby .... The lever is mounted on a shaft and is free to rotate between two fixed banking pins. At rest ... rotates clockwise and the entrance tooth is locked in place against the entrance pallet, the lever held in place by the left banking pin. The impulse pin is located within the lever fork and the balance wheel is near its center position. To get started, the lever fork must receive a small impulse ... rotates the lever slightly clockwise off the left banking pin. This unlocks the entrance pallet allowing ... is transferred by the lever to the balance wheel via the ruby impulse pin on the roller of the balance wheel. The lever moves until it rests against the right banking pin it is held in this position by the force ... a clockwise impulse to the balance wheel s impulse pin via the lever fork, while pushing the lever ... pallet now being held in place by the left banking pin via the lever. The balance wheel continues ... lever escapement beats at 18,000 or more beats per hour. Each beat gives the balance wheel an impulse ... rotates typically at an average of 10 rpm or more. Draw The reliability of the modern lever escapement ... during the unlocking. The draw holds the lever against the banking during the detached portion of the operating cycle. Draw angle is typically about 15 degrees to the radial. Early lever escapements ... a jolt could result in the escapement unlocking. Lever watch movement Most modern mechanical watches are jeweled lever watches, using manmade ruby or sapphire jewels for the high wear areas of the watch ... more details
Infobox River river name Lever River image name image size caption origin Tocantins state Tocantins state mouth basin countries Brazil length elevation mouth elevation discharge watershed The Lever River is a river of Tocantins state Tocantins state in central Brazil . See also List of rivers of Tocantins References http www.zonu.com imapa americas md Tocantins brazil.pdf Brazilian Ministry of Transport Tocantins geo stub Category Rivers of Tocantins coord missing Brazil ... more details
File Mw39365.jpg thumb right Sir Ashton Lever Sir Ashton Lever 5 March 1729 28 January 1788 was an England English collector of natural objects. ref name celeb http www.manchester2002 uk.com celebs philanthropy4.html Lever Ashton Lever , Manchester celebrities , accessed 31 August 2010 ref Biography Ashton Lever was born in 1729 to well off titled parents who lived at Alkrington Hall . In 1735, Sir James Darcy Lever, his father, had served as High Sheriff of Lancashire . ref name celeb Lever began by collecting seashell s in about 1760, and gradually accumulated one of the richest private collections of natural objects, including live animals. He opened it to the public in April 1766, in Manchester , moving the museum to his family home at Alkrington Hall , near Rochdale , Lancashire , in 1771. In the same year he founded Archers Hall, Inner Circle, Regent s Park, London for the Archers Company of the Honourable Artillery Company . In 1774, Lever moved to London , and next year his Holophusicon opened to the public in Leicester Square . Captain James Cook was so impressed by Lever s collection that he donated objects from his own voyages to the museum. Lever continued to buy new items until he became bankrupt, at which point the collection contained 28,000 specimens. Both the British Museum and the Catherine II of Russia Empress of Russia declined to buy it, so it was disposed of by lottery, 8,000 tickets being sold at a guinea each. The winner, a Mr James Parkinson 1730 1813 James Parkinson who should not be confused with the famous physician also called James Parkinson who ... collection. Lever s collection was catalogued by George Shaw . References reflist Further reading ... d art location Paris isbn 0 304 36333 2 Persondata Metadata see Wikipedia Persondata . NAME Lever ... 28 January 1788 PLACE OF DEATH DEFAULTSORT Lever, Ashton Category 1729 births Category 1788 deaths ... James Darcy Lever ... more details
Infobox AFL player 2 name Harry Lever birth date 5 January 1886 birth place originalteam Brighton Elwood heightweight 178cm 76 kg death date death place debutdate 1905 debutteam St Kilda Saints St Kilda debutopponent debutstadium playingteams St Kilda Saints St Kilda 1905 22 218 games, 6 goals statsend 1922 Harry Lever born 5 January 1886 was an Australian rules footballer who played with St Kilda Saints St Kilda in the Australian Football League VFL . Lever played as a fullback in his 18 year VFL career which began in 1905. In 1907 he lost two fingers in a Band saw accident but recovered to go on and play a total of 218 games for St Kilda, including the 1913 VFL Grand Final . External links AflRleague ref H Harry Lever.html St Kilda Football Club Captains Persondata Metadata see Wikipedia Persondata . NAME Lever, Harry ALTERNATIVE NAMES SHORT DESCRIPTION DATE OF BIRTH 5 January 1886 PLACE OF BIRTH DATE OF DEATH PLACE OF DEATH DEFAULTSORT Lever, Harry Category 1886 births Category Australian rules footballers from Victoria Category St Kilda Football Club players Category Year of death missing ... more details
infobox UK place latitude 53.5633 longitude 2.3699 official name Little Lever population 11,505 population ... 240px static image caption St Matthew s Church, Little Lever Little Lever is a large village within ... cotta works, a rope walk, and in numerous collieries. History Toponymy Lever is derived from the Old ... ways. Whilst the spellings differ the pronunciation was similar to lever Lethre 1221 Leuere 1278 ... editor2 last Brownbill editor2 first J. title Little and Darcy Lever url http www.british history.ac.uk ... littlelever.html title Little and Darcy Lever accessdate 2007 12 18 ref Manor The Manorialism manor of Little Lever was part of the barony of Manchester and during the Middle Ages was governed ... of Manchester regarding the village of Little Lever. ref name VCH In 1246 the Lord of the manor was recorded as Leising de Lever. During the next hundred years the de Lever family took control of the moieties ... de Lever. ref name VCH This homage each year amounted to 4d and a fee of 6s 8d and 12d for provision ... of Adam, son of Ellis de Lever and the family line was settled. ref cite book first last Manchester ... the ownership until 1448, when Henry Lever the elder owed rent of 25s on the village. In 1623 the Black ... contained 9 hearths. ref name VCH The manor house, Little Lever Hall, built of wood and plaster was destroyed ... the Lever s estate in Rivington . ref name tde Industrial Revolution Records show there were Fulling fulling mills mills in Little Lever before 1559. The holding of Adam Byrom of Salford who died ... Lever , his three year old grandson Ralph, was his heir. ref Duchy of Lanc. Inq. p.m. xi, no. 65 ... brother Adam as heir to twelve messuages, half a water mill and fulling mill in Little Lever or possibly Darcy Lever . ref Duchy of Lanc. Inq. p.m.xvii, no. 39. ref In the 1800s the coal mining industry ..., Greater Manchester Radcliffe and Little Lever. In 1880 there were ten working pits listed for Little Lever ref Report of HM Inspector of Mines 1880 ref ref cite web url http www.cmhrc.co.uk title Mine ... more details
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