Land transport was pioneered by the revolutionary wheel. The wheel was invented about forty centuries BC. It was used by potters. A copy about the wheel and its uses was found in Lower Mesopotamia (Sumer) dated 3250 BC. The principle of the centrifugal force is used to shape a lump of clay that is fixed to the center to give the circular shape. The potter replaces its own strength by the centrifugal energy, and guides his hand accordingly. To achieve this, it should rotate at least one hundred times per minute to turn a wheel that rotates on an axis.
[...] Evolution of the car and its interior: the steam engine electric car 1. Steam Amedee Bollee (1844-1917), founder of bells at Le Mans, decided to improve the dolly Cugnot and directed in 1873 the first real steam car, called "the Obedient", which he presented in Paris in 1875. It was an omnibus with steam engine at the rear and transmission channels. The weight was 5 tonnes, with a power of 15 hp and a speed of 60 km / h. [...]
[...] This first car, known as dray Cugnot, carried four people at 4km / and the range did not exceed one quarter of an hour. Oliver Evans, a wheelwright in Philadelphia, in 1801 realized a three-wheel sedan. The coach motor was invented by Richard Trevithick in 1803, and could carry ten people at 16 km / h. But the future did not belong to the steam engine. In 1830, the French Ecole Polytechnique Cazalat Antoine (1796-1869) invented the power steering and brake piston oil. [...]
[...] Also, system code and road lights were developed The Italian Vincenzo Lancia developed the front wheel independent suspension and at the same time the first production car with monocoque was developed John Gregory and Peter Junk, a French engineer, realized the first application on a car (the "Tracta"). An American firm, the Dayton Engineering Laboratories Company, Ohio, replaced the conventional magneto ignition by a small device called Delco, an acronym of the company itself The first synchronized gearbox was mounted on a Cadillac model. [...]
[...] Robert Thomson had patented in 1845 the project of a hollow rubber tube filled with air power interposing a gas cushion between the wheels of a vehicle and the road. However this invention did not prove to highly feasible. In 1888, veterinarian John Dunlop (1840-1921) made the first pneumatic rubber tube filled with air and protected it by an enclosure of canvas. This tire has been used commonly whereas the only disadvantage being was that it was glued to the rim, and became irremovable. [...]
[...] In 1881, Gottlieb Daimler and Wilhelm May Bach, both employees of the German firm Otto, had patented the first four-stroke engine fueled with petroleum spirit. It turned at 700 revolutions per minute and developed 0.5 hp. Daimler laid it on a hood to the rear of a motor vehicle, with belt drive. In fact, the modern automobile is born with the work of the German Carl Benz, who made his first car, a tricycle with a single cylinder four-stroke engine in 1885. [...]
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