In 1888, Granville T Woods developed a system for overhead electric conducting lines for railroads, which aided in the development of the overhead railroad system found in cities such as Chicago, St. Louis, and New York City. In his early thirties, he became interested in thermal power and steam-driven engines. In 1889, he filed his first patent for an improved steam-boiler furnace. In 1892, a complete Electric Railway System was operated at Coney Island, NY. In 1887, he patented the Synchronous Multiplex Railway Telegraph, which allowed communications between train stations from moving trains. Granville T Woods’ invention made it possible for trains to communicate with the station and with other trains so they knew exactly where they were at all times.

Alexander Graham Bell’s company purchased the rights to Granville T Woods’ telegraphony patent enabling him to become a full-time inventor. Among his other top inventions were a steam boiler furnace and an automatic air brake used to slow or stop trains. Wood’s electric car was powered by overhead wires. It was the third rail system to keep cars running on the right track.

At Odds With Thomas Edison

Success led to law suits filed by Thomas Edison who sued Woods claiming that he was the first inventor of the multiplex telegraph. Woods eventually won, but Edison didn’t give up easily when he wanted something. Trying to win Granville Woods over, and his inventions, Edison offered Woods a prominent position in the engineering department of Edison Electric Light Company in New York. Woods declined preferring his independence.