Nowadays, a commonwealth has come to mean any government in which all people involved have a say, or a loose formation of nations with a shared loyalty. It is also the official designation of a few states including, Kentucky, Massachusetts, Pennsylvania, and Virginia and some U.S. territories.
1 Pneumatic tools are powered by compressed air. 2  Common types of these air-powered hand tools that are used in industry include buffers, nailing and stapling guns, grinders, drills, jack hammers, chipping hammers, riveting guns, sanders and wrenches.
Who invented the pneumatic tire? Charles Goodyear invented vulcanized rubber used to make tires in 1844. John Dunlop invented the pneumatic or air filled tire in 1888 and used them on bicycles. Andrea Micâ¦helin was the first person to use them on automobile tires in 1895 but not successfully.