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Preselector Gearbox
A preselector gearbox is a type of manual transmission mostly used on passenger cars and racing cars in the 1930s, in buses from 1940-1960 and in armoured vehicles from the 1930s to the 1970s. The defining characteristic of a preselector gearbox is that the gear shift lever allowed the driver to "pre-select" the next gear, usually with the transmission remaining in the current gear until the driver pressed the "gear change pedal" at the desired time. The design removed the need for the driver to master the timing of using a clutch pedal and shift lever in order to achieve a smooth shift in a non-synchromesh manual transmission. Most pre-selector transmissions avoid a driver-controlled clutch entirely. Some use one solely for starting from a standstill. Preselector gearboxes were most common prior to the widespread adoption of the automatic transmission, so they were considered in comparison to the " crash gearbox" type of manual transmission. Preselector gearboxes were often ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Daimler Fifteen Interior 5680749280
Daimler is a German surname. It may refer to: People * Gottlieb Daimler (1834–1900), German inventor, industrialist and namesake of a series of automobile companies * Adolf Daimler (1871–1913), engineer and son of Gottlieb Daimler * Paul Daimler (1869–1945), engineer and son of Gottlieb Daimler Places * Mount Daimler, a peak in Antarctica named after Gottlieb Daimler Companies Germany * Daimler AG, the past name of the Mercedes-Benz Group from 2007 to 2022, known to the public as Mercedes-Benz, formerly known as Daimler-Benz AG (1926–1998) and DaimlerChrysler AG (1998–2007) ** Daimler Mobility, banking and credit/debit card services subsidiary renamed as Mercedes-Benz Mobility in 2022. * Daimler Truck, demerged in 2021 ** Daimler Truck North America, formerly Freightliner Corporation, Portland, Oregon ** Daimler India Commercial Vehicles, a subsidiary based in Chennai, India ** Daimler Buses North America, subsidiary in Greensboro, North Carolina, US * Daimler ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Self-Changing Gears
Self-Changing Gears was a British company, set up and owned equally by Walter Gordon Wilson and John Davenport Siddeley, to develop and exploit the Wilson or pre-selector gearbox. Self-Changing Gears designed, built and licensed transmissions for various applications including light and heavy road vehicles, military, marine, and rail vehicles as well as motor racing cars. Ownership changes Following the death of Walter Wilson in 1957, his son A Gordon Wilson took over the running of the company until his retirement in 1965. The original company Improved Gears Ltd was incorporated on 28 December 1928, and this later became Self-Changing Gears (SCG). The company moved a number of times in the early years, and in 1938 settled in premises at Lythalls Lane, Coventry. During World War II, additional premises were used at Burbage, Leicestershire. In 1935, Siddeley sold his interests in Armstrong Siddeley (including Self-Changing Gears) to Hawker Aircraft forming Hawker Siddeley. In 195 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edgar De Normanville
Captain Edgar Joseph de Normanville Royal Engineers, R.E. (1882–1968) was a British engineer who became a successful inventor and a technical journalist. Biography Born 13 October 1882 in Leamington Spa, the eldest son of William de Normanville (1843–1928), a civil engineer, and his wife born Elizabeth Simonds he was educated at Ampleforth College and completed an engineering apprenticeship. Clear view screen As a schoolboy he developed the idea of a rotating disc to clear drops of water from a windscreen, the clear view screen becoming a design popular in ships.Capt E. J. De Normanville. ''The Times'', Friday, Jan 19, 1968; pg. 10; Issue 57153 Journalist Fascinated by the development of motor vehicles he joined the editorial staff of the weekly motoring magazine ''The Motor'' in 1908. Following service with the Royal Engineers in the first world war he became motoring correspondent of ''The Daily Express'' and later ''Daily Chronicle (United Kingdom), The Chronicle''. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Humber Limited
Humber Limited was a British manufacturer of bicycles, motorcycles, and cars incorporated and listed on the stock exchange in 1887. It took the name "Humber & Co Limited" because of the high reputation of the products of one of the constituent businesses that had belonged to Thomas Humber. A financial reconstruction in 1899 transferred its business to Humber Limited. From an interest in motor vehicles beginning in 1896, the motor division became much more important than the cycle division and the cycle trade marks were sold to Raleigh in 1932. The motorcycles were withdrawn from sale during the depression of the 1930s. Humber is now a dormant marque for automobiles as well as cycles. Following their involvement in Humber through Hillman in 1928 the Rootes brothers acquired 60 per cent of Humber's ordinary capital, sufficient for a controlling interest. The two Rootes brothers joined the Humber board in 1932 and began to make Humber the holding company for vehicle manufacturing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electromagnetic Clutch
Electromagnetic clutches operate electrically but transmit torque mechanically. This is why they used to be referred to as electro-mechanical clutches. Over the years, EM became known as electromagnetic versus electro-mechanical, referring more about their actuation method versus physical operation. Since the clutches started becoming popular over 60 years ago, the variety of applications and clutch designs has increased dramatically, but the basic operation remains the same today. Single-face clutches make up approximately 90% of all electromagnetic clutch sales. Electromagnetic clutches are most suitable for remote operation since no mechanical linkages are required to control their engagement, providing fast, smooth operation. However, because the activation energy dissipates as heat in the electromagnetic actuator when the clutch is engaged, there is a risk of overheating. Consequently, the maximum operating temperature of the clutch is limited by the temperature rating of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1954 Salmson 2300S Coupé, Dashboard
Events January * January 1 – The Soviet Union ceases to demand war reparations from West Germany. * January 3 – The Italian broadcaster RAI officially begins transmitting. * January 7 – Georgetown-IBM experiment: The first public demonstration of a machine translation system is held in New York, at the head office of IBM. * January 10 – BOAC Flight 781, a de Havilland Comet jet plane, disintegrates in mid-air due to metal fatigue, and crashes in the Mediterranean near Elba; all 35 people on board are killed. * January 12 – 1954 Blons avalanches, Avalanches in Austria kill more than 200. * January 15 – Mau Mau rebellion, Mau Mau leader Waruhiu Itote is captured in Kenya. * January 17 – In Socialist Federal Republic of Yugoslavia, Yugoslavia, Milovan Đilas, one of the leading members of the League of Communists of Yugoslavia, is relieved of his duties. * January 20 – The US-based National Negro Network is established, with 46 m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Delahaye MS 135 MS, Bj
Delahaye was a family-owned automobile manufacturing company, founded by Émile Delahaye in 1894 in Tours, France. Manufacturing was moved to Paris following incorporation with two unrelated brothers-in-law as equal partners in 1898. The company built a low volume line of limited production luxury cars with coachbuilt bodies; trucks; utility and commercial vehicles; busses; and fire-trucks. Delahaye made a number of technical innovations in its early years; and, after establishing a racing department in 1932, the company came to particular prominence in France in the mid-to-late 1930s, with its Type 138, Type 135SC, and type 145 cars winning numerous races, and setting International records. The company faced setbacks due to the Second World War, and was taken over by amalgamation with arch competitor Hotchkiss in 1954. Both were taken over by the Brandt organization, within mere months, with automotive product manufacturing ended. History Formative years Engineer Émile Dela ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epicyclic Gearing
An epicyclic gear train (also known as a planetary gearset) consists of two gears mounted so that the center of one gear revolves around the center of the other. A carrier connects the centers of the two gears and rotates the planet and sun gears mesh so that their pitch circles roll without slip. A point on the pitch circle of the planet gear traces an epicycloid curve. In this simplified case, the sun gear is fixed and the planetary gear(s) roll around the sun gear. An epicyclic gear train can be assembled so the planet gear rolls on the inside of the pitch circle of a fixed, outer gear ring, or ring gear, sometimes called an ''annular gear''. In this case, the curve traced by a point on the pitch circle of the planet is a hypocycloid. The combination of epicycle gear trains with a planet engaging both a sun gear and a ring gear is called a ''planetary gear train''.J. J. Uicker, G. R. Pennock and J. E. Shigley, 2003, ''Theory of Machines and Mechanisms,'' Oxford University Pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Close-ratio Gearbox
A close-ratio transmission describes a motor vehicle transmission with a smaller than average difference between the gear ratios. They are most often used on sports cars in order to keep the engine in the power band. There is no industry standard as to what constitutes a close-ratio transmission, a transmission that one manufacturer terms close-ratio may not necessarily be considered close-ratioed by another manufacturer. Generally speaking, the more gears a transmission has, the closer they are together. A continuously variable transmission has a near infinite "number" of gear ratios, which implies an infinitely close-ratio between gears. However, with no specific gear ratios, it would not be considered a close-ratioed transmission. Comparison with ordinary transmission This table compares the ratios of three Porsche 911 vehicles from 1967 to 1971, the first being the standard 901/75 transmission, the second being the 901/76 transmission denoted "For hill climbs", and the third b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cone Clutch
A cone is a three-dimensional geometric shape that tapers smoothly from a flat base (frequently, though not necessarily, circular) to a point called the apex or vertex. A cone is formed by a set of line segments, half-lines, or lines connecting a common point, the apex, to all of the points on a base that is in a plane that does not contain the apex. Depending on the author, the base may be restricted to be a circle, any one-dimensional quadratic form in the plane, any closed one-dimensional figure, or any of the above plus all the enclosed points. If the enclosed points are included in the base, the cone is a solid object; otherwise it is a two-dimensional object in three-dimensional space. In the case of a solid object, the boundary formed by these lines or partial lines is called the ''lateral surface''; if the lateral surface is unbounded, it is a conical surface. In the case of line segments, the cone does not extend beyond the base, while in the case of half-line ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
English Racing Automobiles
English Racing Automobiles (ERA) was a British racing car manufacturer active from 1933 to 1954. Prewar history ERA was founded by Humphrey Cook, Raymond Mays, and Peter Berthon in November 1933 and established in Bourne, Lincolnshire, next to Eastgate House, the family home of Raymond Mays between Eastgate road and Spalding road. Their ambition was to manufacture and campaign a team of single seater racing cars capable of upholding British prestige in Continental European racing. With the cost of full Grand Prix racing prohibitive, they instead aimed ERA's efforts at the smaller voiturette—1500cc supercharged—class of motor racing, the Formula 2 equivalent of the day. Humphrey Cook financed the operation—using the wealth from the family drapery business, Cook, Son & Co., of St Paul's Churchyard, London. Berthon was responsible for the overall design of the cars, while Mays became its principal driver—having already successfully raced several other makes including Vaux ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clutch
A clutch is a mechanical device that engages and disengages power transmission, especially from a drive shaft to a driven shaft. In the simplest application, clutches connect and disconnect two rotating shafts (drive shafts or line shafts). In these devices, one shaft is typically attached to an engine or other power unit (the driving member), while the other shaft (the driven member) provides output power for work. Typically the motions involved are rotary, but linear clutches also exist. In a motor vehicle, the clutch acts as a mechanical linkage between the engine and transmission, and briefly disconnects, or separates the engine from the transmission system. This disconnects the drive wheels whenever the clutch pedal is depressed, allowing the driver to smoothly change gears. In a torque-controlled drill, for instance, one shaft is driven by a motor, and the other drives a drill chuck. The clutch connects the two shafts so they may be locked together and spin at the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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