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Remontoire
In mechanical horology, a remontoire (from the French ''remonter'', meaning 'to wind') is a small secondary source of power, a weight or spring, which runs the timekeeping mechanism and is itself periodically rewound by the timepiece's main power source, such as a mainspring. It was used in a few precision clocks and watches to place the source of power closer to the escapement, thereby increasing the accuracy by evening out variations in drive force caused by unevenness of the friction in the geartrain. In spring-driven precision clocks, a gravity remontoire is sometimes used to replace the uneven force delivered by the mainspring running down by the more constant force of gravity acting on a weight. In turret clocks, it serves to separate the large forces needed to drive the hands from the modest forces needed to drive the escapement which keeps the pendulum swinging. A remontoire should not be confused with a ''maintaining power spring'', which is used only to keep the timepiec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mainspring
A mainspring is a spiral torsion spring of metal ribbon—commonly spring steel—used as a power source in mechanical watches, some clocks, and other clockwork mechanisms. ''Winding'' the timepiece, by turning a knob or key, stores energy in the mainspring by twisting the spiral tighter. The force of the mainspring then turns the clock's wheels as it unwinds, until the next winding is needed. The adjectives wind-up and spring-powered refer to mechanisms powered by mainsprings, which also include kitchen timers, metronomes, music boxes, wind-up toys and clockwork radios. Modern mainsprings A modern watch mainspring is a long strip of hardened and blued steel, or specialised steel alloy, 20–30 cm long and 0.05-0.2 mm thick. The mainspring in the common 1-day movement is calculated to enable the watch to run for 36 to 40 hours, i.e. 24 hours between daily windings with a power-reserve of 12 to 16 hours, in case the owner is late winding the watch. This is the nor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Horology
Horology (; related to Latin '; ; , interfix ''-o-'', and suffix ''-logy''), . is the study of the measurement of time. Clocks, watches, clockwork, sundials, hourglasses, clepsydras, timers, time recorders, marine chronometers, and atomic clocks are all examples of instruments used to measure time. In current usage, horology refers mainly to the study of mechanical time-keeping devices, while chronometry more broadly includes electronic devices that have largely supplanted mechanical clocks for the best accuracy and precision in time-keeping. People interested in horology are called ''horologists''. That term is used both by people who deal professionally with timekeeping apparatuses (watchmakers, clockmakers), as well as aficionados and scholars of horology. Horology and horologists have numerous organizations, both professional associations and more scholarly societies. The largest horological membership organisation globally is the NAWCC, the National Association of Wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Harrison
John Harrison ( – 24 March 1776) was a self-educated English Carpentry, carpenter and clockmaker who invented the marine chronometer, a long-sought-after device for solving the History of longitude, problem of calculating longitude while at sea. Harrison's solution revolutionized navigation and greatly increased the safety of long-distance sea travel. The problem he solved was considered so important following the Scilly naval disaster of 1707 that the Parliament of Great Britain, British Parliament offered financial rewards of up to £20,000 (equivalent to £ in ) under the 1714 Longitude Act. In 1730, Harrison presented his first design, and worked over many years on improved designs, making several advances in time-keeping technology, finally turning to what were called sea watches. Harrison gained support from the Board of Longitude, Longitude Board in building and testing his designs. Toward the end of his life, he received recognition and a reward from Parliament. Harri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solenoid
upright=1.20, An illustration of a solenoid upright=1.20, Magnetic field created by a seven-loop solenoid (cross-sectional view) described using field lines A solenoid () is a type of electromagnet formed by a helix, helical coil of wire whose length is substantially greater than its diameter, which generates a controlled magnetic field. The coil can produce a uniform magnetic field in a volume of space when an electric current is passed through it. The term ''solenoid'' was coined in 1823 by André-Marie Ampère. The helical coil of a solenoid does not necessarily need to revolve around a straight-line axis; for example, William Sturgeon's electromagnet of 1824 consisted of a solenoid bent into a horseshoe shape (not unlike an arc spring). Solenoids provide magnetic focusing of electrons in vacuums, notably in television camera tubes such as vidicons and image orthicons. Electrons take helical paths within the magnetic field. These solenoids, focus coils, surround nearly th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jaguar
The jaguar (''Panthera onca'') is a large cat species and the only living member of the genus '' Panthera'' native to the Americas. With a body length of up to and a weight of up to , it is the largest cat species in the Americas and the third largest in the world. Its distinctively marked coat features pale yellow to tan colored fur covered by spots that transition to rosettes on the sides, although a melanistic black coat appears in some individuals. The jaguar's powerful bite allows it to pierce the carapaces of turtles and tortoises, and to employ an unusual killing method: it bites directly through the skull of mammalian prey between the ears to deliver a fatal blow to the brain. The modern jaguar's ancestors probably entered the Americas from Eurasia during the Early Pleistocene via the land bridge that once spanned the Bering Strait. Today, the jaguar's range extends from core Southwestern United States across Mexico and much of Central America, the Amazon rainfo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triumph Stag
The Triumph Stag is a 2+2 sports tourer which was sold between 1970 and 1978 by the Triumph Motor Company, styled by Italian designer Giovanni Michelotti. Design and styling Envisioned as a luxury sports car, the Stag was designed to compete directly with the Mercedes-Benz SL class models. All Stags were four-seater convertible coupés, but for structural rigidity – and to meet proposed American rollover standards of the time – the Stag required a B-pillar " roll bar" hoop connected to the windscreen frame by a T-bar. A body color removable hard top with defrost wires on the rear window, full headliner and lever operated quarter windows was a popular factory option. The car started as a styling experiment cut and shaped from a 1963–64 pre-production 2000 saloon, also styled by Giovanni Michelotti. His agreement was, if Harry Webster, Director of Engineering at Triumph, liked the design, Triumph could use the prototype as the basis of a new model. Webster love ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triumph 2000
The Triumph 2000 is a mid-sized, rear wheel drive automobile which was produced in Coventry by the Triumph Motor Company between 1963 and 1977. It was introduced on 15 October 1963. It was styled by Giovanni Michelotti. It competed with the contemporary Rover P6 2000, which initially was offered only with a four-cylinder engine. The Rover was also released in October 1963, just one week before the Triumph. Larger-engined models, known as the Triumph 2.5 PI and Triumph 2500 were also produced from 1968. Engine The 2000 used the six-cylinder engine first seen in the Standard Vanguard at the end of 1960. However, the last of the six cylinder Vanguards had applied a compression ratio of 8.0:1 which the increasing availability of higher octane fuels enabled the manufacturers to increase to 8.5:1 for the Triumph. This and the fitting of twin Stromberg 150 CD carburettors made for a claimed power output increased to from the Vanguard's . Running gear Standard transmissio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triumph Dolomite
The Triumph Dolomite small saloon car was produced by the Triumph Motor Company division of the British Leyland Corporation in Canley, Coventry between October 1972 and August 1980. Background The Dolomite was the final addition to Triumph's small-car range (codenamed "Project Ajax"), which had started in 1965 with the Triumph 1300. Designed to be a replacement for the rear-wheel drive Triumph Herald, the 1300 was originally fitted with a engine and front-wheel drive. The later model, introduced in September 1970 as the Triumph 1500, featured a remodelled front and rear, styled by Michelotti, and a larger engine. Triumph were however dissatisfied with the market performance of the 1300; although it had been moderately successful, the higher price and greater complexity meant sales never reached the levels of the simpler and cheaper Herald which preceded it. In an attempt to improve matters, the car was comprehensively re-engineered. Launched in September 1970, the Triumph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triumph Motor Company
The Triumph Motor Company was a British car and motor manufacturing company in the 19th and 20th centuries. The marque had its origins in 1885 when Siegfried Bettmann of Nuremberg formed S. Bettmann & Co. and started importing bicycles from Europe and selling them under his own trade name in London. The trade name became "Triumph" the following year, and in 1887 Bettmann was joined by a partner, Moritz Schulte, also from Germany. In 1889, the businessmen started producing their own bicycles in Coventry, England. Triumph manufactured its first car in 1923. The company was acquired by Leyland Motors in 1960, ultimately becoming part of the giant conglomerate British Leyland (BL) in 1968, where the Triumph brand was absorbed into BL's ''Specialist Division'' alongside former Leyland stablemates Rover and Jaguar. Triumph-badged vehicles were produced by BL until 1984 when the Triumph marque was retired, where it remained dormant under the auspices of BL's successor company Rover G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ford Capri
The Ford Capri is a fastback coupé built by Ford of Europe, designed by Philip T. Clark, who was also involved in the design of the Ford Mustang. It used the mechanical components from the Mk2 Ford Cortina and was intended as the European equivalent of the Ford Mustang. The Capri went on to be highly successful for Ford, selling nearly 1.9 million units in its lifetime. A wide variety of engines were used in the car throughout its production lifespan, which included the ''Essex'' and ''Cologne'' V6 at the top of the range, while the ''Kent'' straight-four and ''Taunus'' V4 engines were used in lower-specification models. Although the Capri was not officially replaced, the second-generation Probe was effectively its replacement after the later car's introduction to the European market in 1994. While Ford marketed the car as "Ford Capri – The Car You Always Promised Yourself", the British magazine '' Car'' described the Capri as a "Cortina in drag". History ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ford Cortina
The Ford Cortina is a medium-sized family car that was built initially by Ford of Britain, and then Ford of Europe in various guises from 1962 to 1982, and was the United Kingdom's best-selling car of the 1970s. The Cortina was produced in five generations (Mark I through to Mark V, although officially the last one was only the Cortina 80 facelift of the Mk IV) from 1962 until 1982. From 1970 onward, it was almost identical to the German-market Ford Taunus (being built on the same platform), which was originally a different car model. This was part of Ford's attempt to unify its European operations. By 1976, when the revised Taunus was launched, the Cortina was identical. The new Taunus/Cortina used the doors and some panels from the 1970 Taunus. It was replaced in 1982 by the Ford Sierra. In Asia and Australasia, it was replaced by the Mazda 626-based Ford Telstar, though Ford New Zealand did import British-made complete knock-down kits of the Sierra estate for local assembly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ford Motor Company
Ford Motor Company (commonly known as Ford) is an American multinational automobile manufacturer headquartered in Dearborn, Michigan, United States. It was founded by Henry Ford and incorporated on June 16, 1903. The company sells automobiles and commercial vehicles under the Ford brand, and luxury cars under its Lincoln luxury brand. Ford also owns Brazilian SUV manufacturer Troller, an 8% stake in Aston Martin of the United Kingdom and a 32% stake in China's Jiangling Motors. It also has joint ventures in China (Changan Ford), Taiwan (Ford Lio Ho), Thailand ( AutoAlliance Thailand), and Turkey ( Ford Otosan). The company is listed on the New York Stock Exchange and is controlled by the Ford family; they have minority ownership but the majority of the voting power. Ford introduced methods for large-scale manufacturing of cars and large-scale management of an industrial workforce using elaborately engineered manufacturing sequences typified by moving assembly lines; by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
