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Air filled tires are known as pneumatic tires, and these are the type in almost universal use today. The air compresses as the wheel goes over a bump and acts as a shock absorber. Attempts have been made to make various types of solid tire but none has so far met with much success.
Some air filled tires, especially those used on bicycles have an inner tube. This is a fully sealed rubber tube with a valve to control flow of air in and out. Others, including modern radial tires use a seal between the metal wheel and the tire to maintain the internal air pressure (tubeless tire).
Some tire maufacturing companies include:
For most of history wheels had very little in the way of shock absorption and journeys were very bumpy and uncomfortable. The modern tire came about in stages in the 19th century.
In 1844Events January 15 University of Notre Dame receives its charter from Indiana. February 27 The Dominican Republic gains independence from Haiti. February 28 A gun on the USS Princeton explodes while the boat is on a Potomac River cruise, killing two United, Charles GoodyearScientific American article Charles Goodyear ( December 29, 1800 July 1, 1860) was the inventor of vulcanized rubber. He died in deep debt and is interred at Grove Street Cemetery, New Haven, Connecticut. Neither Goodyear nor his family was ever connected invented vulcanized rubberVulcanization is the process of cross-linking elastomer molecules to make the bulk material harder, less soluble and more durable. It is also called curing. It is the heart of the art and science of rubber compounding. Vulcanization is a chemical process, the material that would later be used to produce tires.
John Boyd DunlopJohn Boyd Dunlop ( February 5, 1840 October 23, 1921) was a Scottish inventor who founded the rubber company that bears his name. In 1888 he developed commercially practical pneumatic tires. Dunlop's invention arrived at a crucial time in the development, a veterinary surgeon living in BelfastThis article is about the city of Belfast in Northern Ireland. See also: Belfast (disambiguation). Belfast is the largest city in Northern Ireland and the Irish Province of Ulster, with a population of 277,391. It is the seat of government for Northern Ir IrelandThe island of Ireland ire in Irish, Airlann in Ulster Scots) is the third-largest island in Europe. It lies on the west side of the Irish Sea, close to the island of Great Britain. It is composed of the Republic of Ireland in the south and Northern Irelan, is widely recognized as the father of the modern tire, although he was not the first to come up with the idea.In 1845Events January 29 The Raven by Edgar Allan Poe is published for the first time New York Evening Mirror . March 1 President John Tyler signs a bill authorizing the United States to annex the Republic of Texas. March 3 Florida is admitted as the 27th U. the first pneumatic (inflatable) tire was patented by ScottishScotland or in Scottish Gaelic, Alba is a country and former independent kingdom of northwest Europe, and one of the four nations comprising the United Kingdom. Scotland occupies the northern third of the island of Great Britain. Scotland took part in a p engineer Robert William Thomson as the Aerial Wheel. This invention consisted of a canvas inner tube surrounded by a leather outer tire. The tire gave a good ride, but there were so many manufacturing and fitting problems that the idea had to be abandoned.
John Dunlop re-invented the tire for his ten year old son's tricycle in 1887 and was awarded a patent for his tire in 1888 (rescinded 1890). Dunlop's tire had a modified leather hosepipe as an inner tube and rubber treads. It wasn't long before rubber inner tubes were invented.
Carbon black was added to tires to improve durability and the resistance to damage.Because neither bicycles nor automobiles had been invented when Thomson produced his tire, that tire was only applied to horse drawn carriages. By Dunlop's time, the bicycle had been fully developed (see Rover) and it proved a far more suitable application for pneumatic tires.
Dunlop partnered with Harvey du Cross, Jr. to form a company which later became the Dunlop Rubber Company to produce his invention. The invention quickly caught on for bicycles and was later adapted for use on cars. Dunlop's company has since merged with the Goodyear company.
External link: Robert William Thomson