Pneumatic Tires
The majority of tires used in modern times are considered to be pneumatic tires. The utilization of rubber in tires enabled the invention of pneumatic tires which allowed for a more comfy ride. The contemporary transportation system of the world depends completely on pneumatic tires.
A pneumatic tire is a tire made of reinforced rubber and filled with compressed air. Motor vehicles like for example buses, cars, trucks, motorcycles and airplanes all utilize pneumatic tires. Wheeled vehicles that are not motorized, like bicycles, also use pneumatic tires.
History
The tire started following the invention or iron bands used around wooden wheels. It wasn't until the middle part of the 19th century that the utilization of solid rubber in the creation of tires. The very first patent for a successful pneumatic tire was issued in 1888 to Irishman John Dunlop who created an inner-tube for a bicycle tire. This was when the word "pneumatic" started to describe tires.
In the year 1895, Edouard and Andre Michelin produced the very first pneumatic tires for automobiles in France. The company of the Michelin brothers was destined to become a leading producer of tires for automobiles. The first U.S. company to make tires was Goodyear Tire company founded in the year 1898, followed by the Firestone Tire & Rubber company in 1900, the second company in the United States to produce tires.
Function
For the first part of the 20th century, pneumatic tires needed a rubber inner tube to hold the air pressure. Tires were made of toughened layers of plies or cord covered with rubber. The plies were laid on a bias or angle to strengthen it and to define the shape of the tire. These "bias ply" tires had a tread pattern for traction.
The modern radial tire has been made with plies that run across the tire body. Inner tube is not necessary as the tire forms an airtight seal with the wheel. This was the Michelin's brother's creation in 1948. The tires did not become widely utilized until the late 1970s. Radial tires last longer and offer better fuel economy.