Pneumatic Tires
The majority of tires utilized in modern times are considered to be pneumatic tires. The use of rubber in tires allowed the invention of pneumatic tires which allowed for a much more comfortable ride. The world's contemporary transportation system relies completely on pneumatic tires.
The pneumatic tire is a toughened rubber tire and is then compressed with air. Motorized vehicles like motorcycles, airplanes, trucks, buses and cars all use pneumatic tires. Wheeled vehicles which are not motorized, such as bicycles, also use pneumatic tires.
History
The history of tires starts with the creation of iron bands around wooden wheels. The utilization of solid rubber in the construction of tires started during the mid-19th century. The very first patent for a successful pneumatic tire was issued in the year 1888 to Irishman John Dunlop who created an inner-tube for a bicycle tire in the year 1888. This was when the word "pneumatic" began to describe tires.
In 1895, Andre and Edouard Michelin produced the very first pneumatic tires for automobiles in France. The Michelin brothers' company was destined to become a top producer of automobile tires. The very first company in the United States to make tires was Goodyear Tire company founded in 1898, followed by the Firestone Tire & Rubber company in the year 1900, the second company in the US to make tires.
Function
A rubber inner tube was utilized in all pneumatic tires in the first part of the 20th century to help hold the air pressure. Tires were constructed of reinforced layers of cord or plies covered with rubber. The plies were laid on a bias or angle to strengthen it and to define the tire's shape. These "bias ply" tires had a tread pattern for traction.
The modern radial tire has been constructed with plies which run across the body of the tire. They require no inner tube as the tire forms an airtight seal with the wheel. This was the Michelin's brother's invention in 1948. The tires did not become commonly used until the late 1970s. Radial tires last longer and provide better fuel economy.