George Westinghouse (1886 - 1914) was just 19 when he patented his first invention – the rotary steam engine – and his creativity only blossomed from there. His contributions to transportation helped make trains and cars safer and more comfortable, and his work with electricity was revolutionary. We still light our homes and power our towns with systems that Westinghouse pioneered. And even if we've improved upon them in the century since his death, the basic concepts Westinghouse gave us continue to help make the world go 'round. In memory of Westinghouse, who died March 12, 2014, here are five of his greatest inventions.