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Marles Steering Gear
Marles steering gear was an hour-glass-and-roller steering gear for mechanically propelled vehicles invented by British inventor and businessman Henry Marles (1871-1955) who also gave his name to his joint-venture Ransome & Marles a major British ball-bearing manufacturer. Aside from ease of use Marles' steering's great appeal to drivers was its lack of backlash. Invented in 1913 it became common from the 1920s until the mid 1950s. In USA when power-steering becoming popular in the 1950s it was mainly replaced by worm and recirculating-ball nut steering —which incorporated ball-bearings. In Europe Marles' design was replaced by a general move to rack-and-pinion steering gear. Description A pair of opposed cams or cam surfaces connected to the steering column operate a transverse rocker shaft carrying the vehicle's steering arm. The point of difference was the use of purely rolling contact and not sliding contact in the meshing elements of a worm-and-follower steering gear.M J ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ransome & Marles
Ransome & Marles Bearing Company Limited was the owner of a business making ball and roller bearings founded during the First World War to make bearings for aircraft and other engines. Before the war most bearings had been imported and most of those were from Germany. The business is now part of NSK UK Limited but Ransome & Marles former plant, Stanley Works, remains in operation in Northern Road, Newark NG24 2JF, Nottinghamshire UK Products The ball-bearing industry provides an essential input to the motor, machine tool, engineering and aircraft industries. History A Ransome & Co Ransome & Marles grew from another separate business needing bearings for its own products. In 1868 Allen Ransome (1833-1913) and Frederic Josselyn (1842-1900) set up A Ransome & Co in Chelsea, London. A Ransome & Co designed and manufactured woodworking and timber-handling machinery. Later they acquired a foundry in Battersea. Vincent Sydney Woods (1855-1939) joined them at the foundry and the f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jaguar 420
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 rai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Torsion Bar
A torsion bar suspension, also known as a torsion spring suspension, is any vehicle suspension that uses a torsion bar as its main weight-bearing spring. One end of a long metal bar is attached firmly to the vehicle chassis; the opposite end terminates in a lever, the torsion key, mounted perpendicular to the bar, that is attached to a suspension arm, a spindle, or the axle. Vertical motion of the wheel causes the bar to twist around its axis and is resisted by the bar's torsion resistance. The effective spring rate of the bar is determined by its length, cross section, shape, material, and manufacturing process. Usage Torsion bar suspensions are used on combat vehicles and tanks like the T-72, Leopard 1, Leopard 2, M26 Pershing, M18 Hellcat, M48 Patton, M60 Patton and the M1 Abrams (many tanks from World War II used this suspension), and on modern trucks and SUVs from Ford, Chrysler, GM, Mitsubishi, Mazda, Nissan, Isuzu, LuAZ, and Toyota. Class 8 truck manufacturer Kenworth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spur Gear
Spur gears or straight-cut gears are the simplest type of gear. They consist of a cylinder or disk with teeth projecting radially. Viewing the gear at 90 degrees from the shaft length (side on) the tooth faces are straight and aligned parallel to the axis of rotation. Looking down the length of the shaft, a tooth's cross section is usually not triangular. Instead of being straight (as in a triangle) the sides of the cross section have a curved form (usually involute and less commonly cycloidal) to achieve a constant drive ratio. Spur gears mesh together correctly only if fitted to parallel shafts. No axial thrust is created by the tooth loads. Spur gears are excellent at moderate speeds but tend to be noisy at high speeds. Spur gear can be classified into two pressure angles, 20° being the current industry standard and 14½° being the former (often found in older equipment). Spur gear teeth are manufactured as either involute In mathematics, an involute (also known as an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Servomechanism
In control engineering a servomechanism, usually shortened to servo, is an automatic device that uses error-sensing negative feedback to correct the action of a mechanism. On displacement-controlled applications, it usually includes a built-in encoder or other position feedback mechanism to ensure the output is achieving the desired effect. The term correctly applies only to systems where the feedback or error-correction signals help control mechanical position, speed, attitude or any other measurable variables. For example, an automotive power window control is not a servomechanism, as there is no automatic feedback that controls position—the operator does this by observation. By contrast a car's cruise control uses closed-loop feedback, which classifies it as a servomechanism. Applications Position control A common type of servo provides ''position control''. Commonly, servos are electric, hydraulic, or pneumatic. They operate on the principle of negative feedback, wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydraulic Pump
Hydraulic pumps are used in hydraulic drive systems and can be hydrostatic or hydrodynamic. A hydraulic pump is a mechanical source of power that converts mechanical power into hydraulic energy ( hydrostatic energy i.e. flow, pressure). It generates flow with enough power to overcome pressure induced by the load at the pump outlet. When a hydraulic pump operates, it creates a vacuum at the pump inlet, which forces liquid from the reservoir into the inlet line to the pump and by mechanical action delivers this liquid to the pump outlet and forces it into the hydraulic system. Hydrostatic pumps are positive displacement pumps while hydrodynamic pumps can be fixed displacement pumps, in which the displacement (flow through the pump per rotation of the pump) cannot be adjusted, or variable displacement pumps, which have a more complicated construction that allows the displacement to be adjusted. Hydrodynamic pumps are more frequent in day-to-day life. Hydrostatic pumps of various types ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydraulic Fluid
A hydraulic fluid or hydraulic liquid is the medium by which power is transferred in hydraulic machinery. Common hydraulic fluids are based on mineral oil or water. Examples of equipment that might use hydraulic fluids are excavators and backhoes, hydraulic brakes, power steering systems, automatic transmissions, garbage trucks, aircraft flight control systems, lifts, and industrial machinery. Hydraulic systems like the ones mentioned above will work most efficiently if the hydraulic fluid used has zero compressibility. Functions and properties The primary function of a hydraulic fluid is to convey power. In use, however, there are other important functions of hydraulic fluid such as protection of the hydraulic machine components. The table below lists the major functions of a hydraulic fluid and the properties of a fluid that affect its ability to perform that function: Composition Base stock The original hydraulics fluid, dating back to the time of ancient Egypt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rover P6
The Rover P6 series (named as the 2000, 2200, or 3500, depending on engine displacement) was a saloon car produced by Rover and subsequently British Leyland from 1963 to 1977 in Solihull, Warwickshire, England, UK. The P6 was the first winner of the European Car of the Year award. Development The P6 was announced on 9 October 1963, just before the Earls Court Motor Show. The vehicle was marketed first as the Rover 2000 and was a complete "clean sheet" design intended to appeal to a larger number of buyers than earlier models such as the P4 it replaced. Rover had identified a developing market between the standard '1.5-litre' saloon car class (such as the Ford Consul and the Singer Gazelle) and the accepted 'three-litre' large saloon cars (typified by the Wolseley 6/99 and the Vauxhall Cresta). Younger and increasingly affluent professional workers and executives were seeking out cars that were superior to the normal 1.5-litre models in style, design and luxury but which offer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Daimler Sovereign
Daimler Sovereign was a name applied by British manufacturer Jaguar Cars to a sequence of luxury automobiles built by it but carrying the Daimler badge between 1966 and 1983. The Daimler Sovereigns were based on contemporary Jaguar bodyshells, chassis and engines in an example of badge engineering. Jaguar Cars took over The Daimler Company in 1960 and the 1966 Sovereign was the second Daimler to be based on a Jaguar model. The first was the 2½ litre V8 with an engine designed by Edward Turner. Unlike the Daimler 2½ litre, the Sovereign had a Jaguar engine, marking the end for the Turner designed engines. The first Daimler Sovereign was based on the 1966 Jaguar 420 and is sometimes referred to as the "Sovereign 420". Subsequent Sovereigns were derived from the Series I, II and III Jaguar XJ6. In 1983 the model name "Sovereign" was switched to the high specification version of the Series III Jaguar XJ6, the 6-cylinder Daimler based on it simply continuing without a model name ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Recirculating Ball
Recirculating ball, also known as recirculating ball and nut or worm and sector, is a steering mechanism commonly found in older automobiles, off-road vehicles, and some trucks. Most newer cars use the more economical rack and pinion steering instead, but some upmarket manufacturers (such as BMW and Mercedes-Benz) held on to the design until well into the 1990s for the durability and strength inherent in the design. A few, including Chrysler, General Motors and Lada, still use this technology in certain models including the Jeep Wrangler{{Cite book , url=https://books.google.com/books?id=HlbCM7VEmroC&q=wrangler+Recirculating+ball&pg=PA91 , title=High-Performance Jeep Wrangler TJ Builder's Guide, isbn=9781932494266, last1=Lee, first1=Christian, year=2007 and the Lada Niva. Mechanism The recirculating ball steering mechanism contains a worm gear inside a block with a threaded hole in it; this block has gear teeth cut into the outside to engage the sector shaft (also called a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aston Martin V8
The Aston Martin V8 is a grand tourer manufactured by Aston Martin in the United Kingdom from 1969 to 1989. As with all traditional Aston Martins, it was entirely handbuilt – with each car requiring 1,200 man-hours to finish. Aston Martin were looking to replace the DB6 model and had designed a larger, more modern looking car. The engine was not ready, however, so in 1967 the company released the DBS with the straight-six ''Vantage'' engine from the DB6. Two years later, Tadek Marek's V8 was ready, and Aston released the DBS V8. With the demise of the straight-six Vantage in 1973, the DBS V8, now restyled and called simply the Aston Martin V8, became the company's mainstream car for nearly two decades. It was eventually retired in favour of the Virage in 1989. DBS V8 From 1969 through 1972, Aston's flagship model was the DBS V8. Though the body and name was shared with the six-cylinder DBS, the V8 sold for much more. The body was a modern reinterpretation of the traditio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bendix Corporation
Bendix Corporation is an American manufacturing and engineering company which, during various times in its existence, made automotive brake shoes and systems, vacuum tubes, aircraft brakes, aeronautical hydraulics and electric power systems, avionics, aircraft and automobile fuel control systems, radios, televisions and computers. It was also well known for the name ''Bendix'', as used on home clothes washing machines, but never actually made these appliances. History Early history Founder and inventor Vincent Bendix initially began his corporation in a hotel room in Chicago in 1914 with an agreement with the struggling bicycle brake manufacturing firm, Eclipse Machine Company of Elmira, New York. Bendix granted permission to his invention which was described as "a New York device for the starting of explosive motors." This company made a low cost triple thread screw which could be used in the manufacture of other drive parts. By using this screw with the Eclipse Machine Com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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