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Tires
A tire (American English) or tyre (British English)[1] is a ring-shaped vehicle component that covers the wheel’s rim to protect it and enable better vehicle performance. Most tires, such as those for automobiles and bicycles, providetraction between the vehicle and the road while providing a flexible cushion that absorbs shock.
The materials of modern pneumatic tires are synthetic rubber, natural rubber, fabric and wire, along with carbon blackand other chemical compounds. They consist of a tread and a body. The tread provides traction while the body provides containment for a quantity of compressed air. Before rubber was developed, the first versions of tires were simply bands of metal that fitted around wooden wheels to prevent wear and tear. Early rubber tires were solid (not pneumatic). Today, the majority of tires are pneumatic inflatable structures, comprising a doughnut-shaped body of cords and wires encased in rubber and generally filled with compressed air to form an inflatable cushion. Pneumatic tires are used on many types of vehicles, including cars, bicycles, motorcycles, buses, trucks, heavy equipment, and aircraft. Metal tires are still used on locomotives and railcars, and solid rubber (or other polymer) tires are still used in various non-automotive applications, such as some casters, carts, lawnmowers, and wheelbarrows.
Phoenixville
Phoenixville is a borough in Chester County, Pennsylvania, United States, 28 miles (45 km) northwest of Philadelphia, at the junction of French Creek with the Schuylkill River. It is located in the Philadelphia Metro Area. The population is 16,440 as of the 2010 Census.[3]
Originally called Manavon, Phoenixville was settled in 1732 and incorporated as a borough in 1849. In its industrial heyday early in the twentieth century, it was an important manufacturing center and it was the site of great iron and steel mills such as the Phoenix Iron Works, boiler works, silk mill, underwear and hosiery factories, a match factory, and the famous (and now highly collectible) Etruscan majolica pottery. Like many American towns and cities, Phoenixville owes its growth to its waterways. It is not only situated on the broad Schuylkill River, a historic thoroughfare to Native Americans and early settlers alike, but it is bisected by the fast-flowing French Creek, which was quickly harnessed for water power.
Much of this history was recognized by the creation of the Phoenixville Historic District, the largest National Register of Historic Places site in Chester County. The Black Rock Bridge, Gay Street School, and Schuylkill Navigation Canal, Oakes Reach Section are also listed on the National Register of Historic Places.[4]