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Centrifugal Clutch
A centrifugal clutch is an automatic clutch that uses centrifugal force to operate. The output shaft is disengaged at low rotational speed and engages more as speed increases. It is often used in mopeds, underbones, lawn mowers, go-karts, chainsaws, mini bikes, and some paramotors and boats to keep the engine from stalling when the output shaft is slowed or stopped abruptly, and to remove load when starting and idling. It has been superseded for automobile applications by the fluid coupling and automated manual transmissions. Operation The input of the clutch is connected to the engine crankshaft while the output may drive a shaft, chain, or belt. As engine revolutions per minute increase, weighted arms in the clutch swing outward and force the clutch to engage. The most common types have friction pads or shoes radially mounted that engage the inside of the rim of a housing. On the center shaft, there is an assorted number of extension springs, which connect to a clutch shoe. When ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Talbot 'Traffic Clutch' Automatic Centrifugal Clutch (Autocar Handbook, 13th Ed, 1935)
Talbot was an automobile brand, marque introduced in 1902 by English-French company Clément-Talbot. The founders, Charles Chetwynd-Talbot, 20th Earl of Shrewsbury and Adolphe Clément-Bayard, reduced their financial interests in their Clément-Talbot business during the World War I, First World War. Soon after the end of the war, Clément-Talbot was brought into a combine named Darracq, STD Motors. Shortly afterward, STD Motors' French products were renamed Talbot instead of Darracq. In the mid-1930s, with the collapse of STD Motors, Rootes Group, Rootes bought the London Talbot factory and Antonio Lago bought the Paris Talbot factory, Lago producing vehicles under the marques Talbot and Talbot-Lago. Rootes renamed Clément-Talbot Sunbeam-Talbot in 1938, and stopped using the brand name Talbot in the mid-1950s. The Paris factory closed a few years later. Ownership of the marque came by a series of takeovers to PSA Group, Peugeot, which revived use of the Talbot name from 1978 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crankshaft
A crankshaft is a mechanical component used in a piston engine to convert the reciprocating motion into rotational motion. The crankshaft is a rotating shaft containing one or more crankpins, that are driven by the pistons via the connecting rods. The crankpins are also called ''rod bearing journals'', and they rotate within the "big end" of the connecting rods. Most modern crankshafts are located in the engine block. They are made from steel or cast iron, using either a forging, casting or machining process. Design The crankshaft located within the engine block, held in place via main bearings which allow the crankshaft to rotate within the block. The up-down motion of each piston is transferred to the crankshaft via connecting rods. A flywheel is often attached to one end of the crankshaft, in order to smoothen the power delivery and reduce vibration. A crankshaft is subjected to enormous stresses, in some cases more than per cylinder. Crankshafts for single-cylin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Balloon Catheter
A balloon catheter is a type of "soft" catheter with an inflatable "balloon" at its tip which is used during a catheterization procedure to enlarge a narrow opening or passage within the Human body, body. The deflated balloon catheter is positioned, then inflated to perform the necessary procedure, and deflated again in order to be removed. Some common uses include: *angioplasty or balloon septostomy, via cardiac catheterization (heart cath) *tuboplasty via uterus, uterine catheterization *pyeloplasty using a detachable inflatable balloon stent positioned via a cystoscopy, cystocopic transvesicular approach. Angioplasty balloon catheters Balloon catheters used in angioplasty are either of Over-the-Wire (OTW) or Rapid Exchange (Rx) design. Rx catheters nowadays are about 90% of the Coronary Intervention market. While OTW Catheters may still be useful in highly tortuous vascular pathways, they sacrifice deflation time and pushability. When a balloon catheter is used to compress p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thomas Fogarty
Dr. Thomas J. "Tom" Fogarty (born February 25, 1934 in Cincinnati, Ohio Cincinnati ( ) is a city in the U.S. state of Ohio and the county seat of Hamilton County. Settled in 1788, the city is located at the northern side of the confluence of the Licking and Ohio rivers, the latter of which marks the state line wit ...) is an American surgeon and medical device inventor. He is best known for the invention of the Fogarty embolectomy catheter, embolectomy catheter (or balloon catheter), which revolutionized the treatment of blood clots (embolus). In 2008, Fogarty was elected a member of the National Academy of Engineering for invention of the balloon catheter and devices that have revolutionized vascular surgery, and for creating companies to commercialize these inventions. Early life and education Fogarty was born in Cincinnati, Cincinnati, Ohio, on February 25, 1934. His father worked as a railroad engineer, but died when Fogarty was eight years old. Fogarty cites his fath ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Armstrong Siddeley
Armstrong Siddeley was a British engineering group that operated during the first half of the 20th century. It was formed in 1919 and is best known for the production of luxury vehicles and aircraft engines. The company was created following the purchase by Armstrong Whitworth of Siddeley-Deasy, a manufacturer of fine motor cars that were marketed to the top echelon of society. After the merge of companies, this focus on quality continued throughout in the production of cars, aircraft engines, gearboxes for tanks and buses, rocket and torpedo motors, and the development of railcars. Company mergers and takeovers with Hawker Aviation and Bristol Aero Engines saw the continuation of the car production which ceased in August 1960. The company was absorbed into the Rolls-Royce conglomerate which was interested in the aircraft and aircraft engine business. Eventually, the remaining spares and all motor car interests were sold to the Armstrong Siddeley Owners Club Ltd, which now own ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meccano Ltd
Meccano Ltd was a British toy manufacturing company, established in 1908 by Frank Hornby in Liverpool, England, to manufacture and distribute Meccano and other model toys and kits created by the company. During the 1920s and 1930s it became the biggest toy manufacturer in the United Kingdom and produced three of the most popular lines of toys in the twentieth century: Meccano, Hornby Trains and Dinky Toys. Financial problems beset the company in the early 1960s and Meccano Ltd was taken over by Lines Bros Ltd in 1964. History :''See Frank Hornby for the events leading up to the formation of Meccano Ltd''. In 1901 Frank Hornby, a clerk from Liverpool, England, invented a new construction toy called "Mechanics Made Easy", which soon became known as Meccano. To manufacture and distribute Meccano, Hornby needed to raise capital to invest in factory and plant, and this resulted in the establishment of Meccano Ltd in 1908, with Hornby as the sole proprietor. A factory was acquired in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meccano Magazine
''Meccano Magazine'' was an English monthly hobby magazine published by Meccano Ltd between 1916 and 1963, and by other publishers between 1963 and 1981. The magazine was initially created for Meccano builders, but it soon became a general hobby magazine aimed at "boys of all ages". History The magazine was launched by Frank Hornby, the inventor of Meccano, as a bi-monthly publication in 1916 in the United States as "Meccano Engineer", and was a month ahead of the UK issue. The first copies were given away free but in 1918 readers had to pay two pence for postage for four issues. In 1917 and again in 1932 Hornby published a history of Meccano, its manufacture, and marketing in the magazine. In 1919 it doubled its size to eight pages and now cost one penny. New Meccano parts were advertised for the first time in 1920 and in 1922 the magazine became a monthly publication. From 1921, the magazine was edited by Ellison Hawks who worked at Meccano as an advertising manager. From the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
US Patent 598314 Detail Centrifugal Clutch
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territories, nine Minor Outlying Islands, and 326 Indian reservations. The United States is also in free association with three Pacific Island sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Republic of Palau. It is the world's third-largest country by both land and total area. It shares land borders with Canada to its north and with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 million, it is the most populous country in the Americas and the third most populous in the world. The national capital of the United States is Washington, D.C. and its most populous city and principal financial center is New York City. Paleo-Americans ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Waste Heat
Waste heat is heat that is produced by a machine, or other process that uses energy, as a byproduct of doing work. All such processes give off some waste heat as a fundamental result of the laws of thermodynamics. Waste heat has lower utility (or in thermodynamics lexicon a lower exergy or higher entropy) than the original energy source. Sources of waste heat include all manner of human activities, natural systems, and all organisms, for example, incandescent light bulbs get hot, a refrigerator warms the room air, a building gets hot during peak hours, an internal combustion engine generates high-temperature exhaust gases, and electronic components get warm when in operation. Instead of being "wasted" by release into the ambient environment, sometimes waste heat (or cold) can be used by another process (such as using hot engine coolant to heat a vehicle), or a portion of heat that would otherwise be wasted can be reused in the same process if make-up heat is added to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Continuously Variable Transmission
A continuously variable transmission (CVT) is an automatic transmission that can change seamlessly through a continuous range of gear ratios. This contrasts with other transmissions that provide a limited number of gear ratios in fixed steps. The flexibility of a CVT with suitable control may allow the engine to operate at a constant RPM while the vehicle moves at varying speeds. CVTs are used in cars, tractors, side-by-sides, motor scooters, snowmobiles, bicycles, and earthmoving equipment. The most common type of CVT uses two pulleys connected by a belt or chain; however, several other designs have also been used at times. Types Pulley-based The most common type of CVT uses a V-belt which runs between two variable-diameter pulleys. The pulleys consist of two cone-shaped halves that move together and apart. The V-belt runs between these two-halves, so the effective diameter of the pulley is dependent on the distance between the two-halves of the pulley. The V-shape ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chainsaws
A chainsaw (or chain saw) is a portable gasoline-, electric-, or battery-powered saw that cuts with a set of teeth attached to a rotating chain driven along a guide bar. It is used in activities such as tree felling, limbing, bucking, pruning, cutting firebreaks in wildland fire suppression, and harvesting of firewood. Chainsaws with specially designed bar-and-chain combinations have been developed as tools for use in chainsaw art and chainsaw mills. Specialized chainsaws are used for cutting concrete during construction developments. Chainsaws are sometimes used for cutting ice; for example, ice sculpture and winter swimming in Finland. History In surgery The origin of chain saws in surgery is debated. A "flexible saw", consisting of a fine serrated link chain held between two wooden handles, was pioneered in the late 18th century (c. 1783–1785) by two Scottish doctors, John Aitken and James Jeffray, for symphysiotomy and excision of diseased bone, respectively. It was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karting
Kart racing or karting is a road racing variant of motorsport with open-wheel, four-wheeled vehicles known as go-karts or shifter karts. They are usually raced on scaled-down circuits, although some professional kart races are also held on full-size motorsport circuits. Karting is commonly perceived as the stepping stone to the higher ranks of motorsports, with most of Formula One champions including Sebastian Vettel, Nico Rosberg, Ayrton Senna, Max Verstappen, Lewis Hamilton, Michael Schumacher, Kimi Räikkönen, and Fernando Alonso having begun their careers in karting. Karts vary widely in speed and some (known as superkarts) can reach speeds exceeding , while recreational go-karts intended for the general public may be limited to lower speeds. History American Art Ingels is generally accepted to be the father of karting. A veteran hot rodder and a race car builder at Kurtis Kraft, he built the first kart in Southern California in 1956. Early karting events were h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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