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Half-track
A half-track is a civilian or military vehicle with wheels at the front for steering and continuous tracks at the back to propel the vehicle and carry most of the load. A half-track combines the soft-ground traction of a tank with the Car handling, handling of a wheeled vehicle. Performance The main advantage of a half-track over a fully-wheeled vehicle is that its tracks reduce the pressure on any given area of the ground by spreading the vehicle's weight over a larger area, giving it greater mobility over soft terrain like mud and snow. A further advantage is that it does not require either the tank steering systems, complex steering mechanism of a fully tracked vehicle or skill in tracked steering, relying instead on a familiar steering wheel connected to its front wheels to direct the vehicle; maneuverability is augmented in some cases by track braking tied to the steering wheel. The main disadvantage is the increased maintenance to maintain track tension, and the reduced l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kégresse Track
A Kégresse track is a kind of rubber or canvas continuous track which uses a flexible belt rather than interlocking metal segments. It can be fitted to a conventional car or truck to turn it into a half-track, suitable for use over rough or soft ground. Conventional front wheels and steering are used, although skis may also be fitted. A snowmobile is a smaller ski-only type. The mechanism incorporates an articulated bogie, fitted to the rear of the vehicle with a large drive wheel at one end, a large unpowered idler wheel at the other, and several small idler-wheel#idler pulley, guide wheels in between, over which run a reinforced flexible belt. The belt is fitted with metal or rubber treads to grip the ground. History Russia Adolphe Kégresse designed the original system whilst working for Tsar Nicholas II of Russia as a chauffeur and as the head of the royal garage between 1906 and 1917. He applied it to several cars including a Russo-Balt and a 12-cylinder Packard. After ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adolphe Kégresse
Adolphe Kégresse (1879, Héricourt, Haute-Saône - 1943) was a French military engineer who invented the half-track and dual clutch transmission. Born at Héricourt, and educated in Montbéliard, he moved in 1905 to Saint Petersburg, Russia to work for the Russian Tsar Nicholas II. To improve the mobility of the imperial car park, he invented the Kégresse track to modify normal motor vehicles into half-tracks. He was also a personal chauffeur of Tsar Nicholas II and the Head of the Mechanical Department of the Russian Imperial Garage at Tsarskoye Selo. The Aide-de-camp to Tsar Nicholas II, Prince Orlov wrote in a letter to the Tsar's Minister of the Court on May 15, 1914: "... I consider Kégresse an irreplaceable worker and I am afraid his leaving will be a great loss for the garage. Your Highness knows, of course, how much His Majesty appreciates Kégresse." In 1908, the architect Lipsky VA designed a second two-storeyed Art Nouveau building for the Russian Imperia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Continuous Track
Continuous track or tracked treads are a system of vehicle propulsion used in tracked vehicles, running on a continuous band of treads or track plates driven by two or more wheels. The large surface area of the tracks distributes the weight of the vehicle better than steel or rubber tyres on an equivalent vehicle, enabling continuous tracked vehicles to traverse soft ground with less likelihood of becoming stuck due to sinking. Modern continuous tracks can be made with soft belts of synthetic rubber, reinforced with steel wires, in the case of lighter agricultural machinery. The more common classical type is a solid chain track made of steel plates (with or without rubber pads), also called caterpillar tread or tank tread, which is preferred for robust and heavy construction vehicles and military vehicles. The prominent treads of the metal plates are both hard-wearing and damage resistant, especially in comparison to rubber tyres. The aggressive treads of the t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Military Vehicle
A military vehicle is any vehicle for land-based military transport and activity, including combat vehicles, both specifically designed for or significantly used by military. Most military vehicles require Off-road vehicle, off-road capabilities and/or vehicle armour, vehicle armor, making them heavy. Some have Continuous track#Military application, vehicle tracks instead of just :Wheeled military vehicles, wheels; half-tracks have both. Furthermore, some military vehicles are Amphibious vehicle, amphibious, constructed for use on land and water, and sometimes also intermediate surfaces. Military vehicles are almost always camouflaged, or at least painted in inconspicuous color(s). In contrast, under the Geneva Conventions, all non-combatant military vehicles, such as Military ambulance, military ambulances and mobile Aid station#Military operations, first aid stations, must be properly and clearly marked as such. Under the conventions, when respected, such vehicles are legally im ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tank Steering Systems
Tank steering systems allow a tank, or other continuous track vehicle, to turn. Because the tracks cannot be angled relative to the hull (in any operational design), steering must be accomplished by speeding one track up, slowing the other down (or reversing it), or a combination of both. Half-track vehicles avoid this by combining steerable wheels and fixed-speed tracks. Early steering systems were adopted from tracked work vehicles, generally using a clutch to reduce power to one track, causing it to slow down. These designs have numerous problems, notably when climbing hills or running at high speed, as the reduction in power causes the overall speed to slow. Delivering power to both tracks while turning them at different speeds is a difficult design problem. A series of more advanced designs were introduced, especially through World War II, that maintained power to both tracks during steering, a concept known as regenerative steering. Some also allowed one track to move for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Linn Tractor
The Linn tractor is a heavy duty civilian half-track or crawler tractor invented by Holman Harry Linn (born Holman Harry Flannery). Approximately 2,500 units were built in Morris (town), New York, Morris, New York, USA from 1916 to 1952. Development Prototypes Linn was a native of Maine and in his quest for a better machine to travel rural roads with his dog and pony show equipment gave up on a six-wheel-drive design by 1907 to have Alvin Orlando Lombard, Alvin Lombard, of Waterville, build a machine using the tracks off a Lombard Steam Log Hauler, and underslung gasoline engine and wheels on front. It was equipped with a ship-style cabin with living quarters and able to pull a string of wagons behind as well as supply electric lights for his circus. By 1909 this was replaced because of size with a single rear-tracked machine with standard wheeled front axle; however as Linn had become employed as a salesman, demonstrator and mechanic for Lombard a patent dispute erupted and Linn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Citroën
Citroën ()The double-dot diacritic over the 'e' is a diaeresis () indicating the two vowels are sounded separately, and not as a diphthong. is a French automobile brand. The "Automobiles Citroën" manufacturing company was founded on 4 June 1919 by André Citroën. Citroën has been owned by Stellantis since 2021 and previously was part of the PSA Group after Peugeot acquired 89.95% share in 1976. Citroën's head office is located in the Stellantis Poissy Plant in Saint-Ouen-sur-Seine since 2021 (previously in Rueil-Malmaison) and its offices studies and research in Vélizy-Villacoublay, Poissy (CEMR), Carrières-sous-Poissy and Sochaux-Montbéliard. In 1934, the firm established its reputation for innovative technology with the Citroën Traction Avant, Traction Avant. This was the world's first car to be mass-produced with front-wheel drive and four-wheel independent suspension, as well as unibody construction, omitting a separate chassis, and instead using the body of the car ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lombard Steam Log Hauler
The term Lombard refers to people or things related to Lombardy, a region in northern Italy. History and culture * Lombards, a Germanic tribe * Lombardic language, the Germanic language spoken by the Lombards * Lombards of Sicily, a linguistic minority living in Sicily, southern Italy * Lombard League, a medieval alliance of some 30 cities in Northern Italy * Lombard language, a Gallo-Italic language spoken in Northern Italy and southern Switzerland ** Old Lombard, the form of the Lombard language from the 13th and 14th centuries * Lombardic capitals, a decorative lettering style originally used in medieval manuscripts Businesses * ICICI Lombard, an insurance company in India * Le Lombard (or Editions Lombard), a Belgian comic book publisher * Lombard Bank, a bank in Malta * Lombard North Central, a finance house in the United Kingdom Places ;France * Lombard, Doubs, a commune of the Doubs ''département'' * Lombard, Jura, a commune of the Jura ''département'' ;Un ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alvin Lombard
''Alvin'' (DSV-2) is a crewed deep-ocean research submersible owned by the United States Navy and operated by the Woods Hole Oceanographic Institution (WHOI) of Woods Hole, Massachusetts. The original vehicle was built by General Mills' Electronics Group in Minneapolis, Minnesota. Named to honor the prime mover and creative inspiration for the vehicle, Allyn Vine, ''Alvin'' was commissioned on June 5, 1964. The submersible is launched from the deep submergence support vessel , which is also owned by the U.S. Navy and operated by WHOI. The submersible has made more than 5,200 dives, carrying two scientists and a pilot, observing the lifeforms that must cope with super-pressures and move about in total darkness, as well as exploring the wreck of ''Titanic''. Research conducted by ''Alvin'' has been featured in nearly 2,000 scientific papers. Design ''Alvin'' was designed as a replacement for bathyscaphes and other less maneuverable oceanographic vehicles. Its more nimble desig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Waterville, Maine
Waterville is a city in Kennebec County, Maine, United States, on the west bank of the Kennebec River. A college town, the city is home to Colby College, a New England Small College Athletic Conference, NESCAC college, and Thomas College. As of the 2020 United States census, 2020 census the population was 15,828. Along with Augusta, Maine, Augusta, Waterville is one of the principal cities of the Augusta-Waterville, ME Micropolitan Statistical Area. History The area now known as Waterville was once inhabited by the Canibas tribe of the Abenaki people. Called "Taconnet" after Chief Taconnet, the main village was located on the east bank of the Kennebec River at its confluence with the Sebasticook River at what is now Winslow, Maine, Winslow. Known as "Ticonic" by British colonization of the Americas, English settlers, it was burned in 1692 during King William's War, after which the Canibas tribe abandoned the area. Fort Halifax (Maine), Fort Halifax was built by General John Wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1931 Citroën Autochenille P17 Croisière Jaune Photo 2
Events January * January 2 – South Dakota native Ernest Lawrence invents the cyclotron, used to accelerate particles to study nuclear physics. * January 4 – German pilot Elly Beinhorn begins her flight to Africa. * January 22 – Sir Isaac Isaacs is sworn in as the first Australian-born Governor-General of Australia. * January 25 – Mohandas Gandhi is again released from imprisonment in India. * January 27 – Pierre Laval forms a government in France. * January 30 – Charlie Chaplin comedy drama film ''City Lights'' receives its public premiere at the Los Angeles Theater with Albert Einstein as guest of honor. Contrary to the current trend in cinema, it is a silent film, but with a score by Chaplin. Critically and commercially successful from the start, it will place consistently in lists of films considered the best of all time. February * February 4 – Soviet leader Joseph Stalin gives a speech calling for rapid industrialization, arguing that only strong indus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
