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Rotary Mower
A rotary mower is a unit of powered machinery that uses a rotating blade or blades to cut vegetation. Use An American rotary lawnmower mechanic (b. 1927) when queried as to the first rotary mower he knew of - produced a picture of a machine mass produced around 1939 which originally used a Ford Model A or B electric starter motor turned vertically with a steel disc attached to the output shaft having common sickle bar trapezoidal blades riveted upon it. Power originally came from a 6v lead acid battery likewise sourced from a Ford automobile. The machine was pictured in a color photograph dating from about 1964 and had been fitted with a Maytag 2-cycle gasoline engine having its float carburetor on an adapter block turned to permit operation with the crankshaft protruding downward for "vertical crankshaft" operation as is common now. It had only two steel spoked wheels on a single axle and an adjustable tail skid that caused a limited range of cutting heights to be available. In a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
JF GX 2400 SM Mower With Conditioner
JF may refer to: Brands: * JF Duck, an aircraft * Mazda JF engine, a piston engine * JetFlash, a line of flash drives made by Transcend Businesses and organizations: * Japan Foundation * Jardine Fleming, Hong Kong-based investment bank * ''Javnaðarflokkurin'', the Social Democratic Party of the Faroe Islands * TUI fly Belgium, a Belgian airline formerly known as Jetairfly * Jet Asia Airways Jet Asia Airways () was a charter airline based out of Suvarnabhumi Airport in Bangkok, Thailand. Jet Asia Airways offered full-service scheduled and chartered services as well as long- and short-term ACMI flights (also known as wet leases). ..., a Thai airline (IATA code JF) * L.A.B. Flying Service, an American airline (1956-2008, IATA code JF) {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mower
A mower is a person or machine that cuts (mows) grass or other plants that grow on the ground. Usually mowing is distinguished from reaping, which uses similar implements, but is the traditional term for harvesting grain crops, e.g. with reapers and combines. A smaller mower used for lawns and sports grounds (playing fields) is called a ''lawn mower'' or ''grounds mower'', which is often self-powered, or may also be small enough to be pushed by the operator. Grounds mowers have reel or rotary cutters. Larger mowers or '' mower-conditioners'' are mainly used to cut grass (or other crops) for hay or silage and often place the cut material into rows, which are referred to as ''windrows''. '' Swathers'' (or ''windrowers'') are also used to cut grass (and grain crops). Prior to the invention and adoption of mechanized mowers, (and today in places where use a mower is impractical or uneconomical), grass and grain crops were cut by hand using scythes or sickles. Mower configurati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vegetation
Vegetation is an assemblage of plants and the ground cover they provide. It is a general term, without specific reference to particular Taxon, taxa, life forms, structure, Spatial ecology, spatial extent, or any other specific Botany, botanical or geographic characteristics. It is broader than the term ''Flora (plants), flora'' which refers to species richness, species composition. Perhaps the closest synonym is ''plant community'', but "vegetation" can, and often does, refer to a wider range of spatial scales than that term does, including scales as large as the global. Primeval redwood forests, coastal mangrove stands, sphagnum bogs, desert soil crusts, Road verge, roadside weed patches, wheat fields, cultivated gardens and lawns; all are encompassed by the term "vegetation". The vegetation type is defined by characteristic dominant species, or a common aspect of the assemblage, such as an elevation range or environmental commonality. The contemporary use of "vegetation" app ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Power Take-off
A power take-off or power takeoff (PTO) is one of several methods for taking power from a power source, such as a running engine, and power transmission#Mechanical power, transmitting it to an application such as an attached implement or separate machine. Most commonly, it is a spline (mechanical), splined drive shaft installed on a tractor or truck allowing implements with mating fittings to be powered directly by the engine. Semi-permanently mounted power take-offs can also be found on industrial and marine engines. These applications typically use a drive shaft and bolted joint to transmit power to a secondary implement or accessory. In the case of a marine application, such as shafts may be used to power fire pumps. In aircraft applications, such an accessory drive may be used in conjunction with a constant speed drive. Jet aircraft have four types of PTO units: internal gearbox, external gearbox, radial drive shaft, and bleed air, which are used to power engine accessories. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Torque
In physics and mechanics, torque is the rotational analogue of linear force. It is also referred to as the moment of force (also abbreviated to moment). The symbol for torque is typically \boldsymbol\tau, the lowercase Greek letter ''tau''. When being referred to as moment of force, it is commonly denoted by . Just as a linear force is a push or a pull applied to a body, a torque can be thought of as a twist applied to an object with respect to a chosen point; for example, driving a screw uses torque to force it into an object, which is applied by the screwdriver rotating around its axis to the drives on the head. Historical terminology The term ''torque'' (from Latin , 'to twist') is said to have been suggested by James Thomson and appeared in print in April, 1884. Usage is attested the same year by Silvanus P. Thompson in the first edition of ''Dynamo-Electric Machinery''. Thompson describes his usage of the term as follows: Today, torque is referred to using d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chain
A chain is a serial assembly of connected pieces, called links, typically made of metal, with an overall character similar to that of a rope in that it is flexible and curved in compression but linear, rigid, and load-bearing in tension. A chain may consist of two or more links. Chains can be classified by their design, which can be dictated by their use: * Those designed for lifting, such as when used with a hoist; for pulling; or for securing, such as with a bicycle lock, have links that are torus-shaped, which make the chain flexible in two dimensions (the fixed third dimension being a chain's length). Small chains serving as jewellery are a mostly decorative analogue of such types. * Those designed for transferring power in machines have links designed to mesh with the teeth of the sprockets of the machine, and are flexible in only one dimension. They are known as roller chains, though there are also non-roller chains such as block chains. Two distinct chains can be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
French People
French people () are a nation primarily located in Western Europe that share a common Culture of France, French culture, History of France, history, and French language, language, identified with the country of France. The French people, especially the native speakers of langues d'oïl from northern and central France, are primarily descended from Roman people, Romans (or Gallo-Romans, western European Celts, Celtic and Italic peoples), Gauls (including the Belgae), as well as Germanic peoples such as the Franks, the Visigoths, the Suebi and the Burgundians who settled in Gaul from east of the Rhine after the fall of the Roman Empire, as well as various later waves of lower-level irregular migration that have continued to the present day. The Norsemen also settled in Normandy in the 10th century and contributed significantly to the ancestry of the Normans. Furthermore, regional ethnic minorities also exist within France that have distinct lineages, languages and cultures such ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rousseau SA
Jean-Jacques Rousseau (, ; ; 28 June 1712 – 2 July 1778) was a Genevan philosopher (''philosophe''), writer, and composer. His political philosophy influenced the progress of the Age of Enlightenment throughout Europe, as well as aspects of the French Revolution and the development of modern political, economic, and educational thought. His ''Discourse on Inequality'', which argues that private property is the source of inequality, and ''The Social Contract'', which outlines the basis for a legitimate political order, are cornerstones in modern political and social thought. Rousseau's sentimental novel ''Julie, or the New Heloise'' (1761) was important to the development of preromanticism and romanticism in fiction. His ''Emile, or On Education'' (1762) is an educational treatise on the place of the individual in society. Rousseau's autobiographical writings—the posthumously published '' Confessions'' (completed in 1770), which initiated the modern autobiography, and the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Victa
Victa is an Australian manufacturer of outdoor garden equipment, including petrol, electric, and battery-powered lawn mowers, edgers, String trimmer, trimmers, and chainsaws. The brand is best known as a manufacturer of rotary lawn mowers. In the early 1960s the company also built light aircraft, notably the Victa Airtourer, and project homes. Since 2008 and the Victa brand is owned by the American engine manufacturer Briggs & Stratton. In Australia and New Zealand, Victa products are sold through major hardware chains and specialist dealers, and some products are available through dealers in other countries. History The Victa company was founded by Mervyn Victor Richardson in 1952. The name was derived from his middle name. Lawn mowers Mervyn's son Garry mowed lawns to earn money in university holidays. Garry borrowed Mervyn's Victa 14" cylinder-based power mower which was heavy to transport and to operate. Mervyn wanted to design a new mower for his son's business. Mervyn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brush Hog
A bush hog or "brush hog" is a type of rotary mower. Typically these mowers are designed to be towed behind a farm tractor using the three-point hitch and are driven via the power take-off (PTO). It has blades that are not rigidly attached to the drive like a lawnmower blade, but are on hinges so if the blade hits a Rock (geology), rock or Stack (geology), stump, it bounces backward and inward, and then centrifugal force makes it go outwards again. The rotary blades are not sharpened in the same way as a conventional mower blade. They are usually quite dull so they whack through dense plant growth, whereas a sharp blade often gets stuck or slowed. The blades are very heavy, up to an inch thick, so the centrifugal force pulling out is stronger than the forces of the vegetation bouncing in. They are made of heat treated high carbon steel that can withstand strikes with hard objects such as Rock (geology), rocks and stones. Types of brush hog Two archetypes of this type of mower are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flail Mower
A flail mower is a type of powered garden/agricultural equipment which is used to deal with heavier grass/scrub which a normal lawn mower could not cope with. Some smaller models are self-powered, but many are PTO driven implements, which can attach to the three-point hitches found on the rear of most tractors. This type of mower is best used to provide a rough cut to long grass and even brambles in locations such as roadsides, where contact with loose debris may be possible. The flail mower gets its name from the use of flails attached to its rotating horizontal drum (also called tube, rotor, or axle). Many implement companies also refer to the flails as knives, blades or hammers. The rows of flails are usually staggered to give a continuous cut for reduced wear on the machine. The flails are attached to the drum using chain links or brackets, depending on the manufacturer. The rotating drum is parallel to the axle of the tractor. The PTO driveshaft along the tractor's axis m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
