Granville T. Woods (1856 – 1910) – Telegraphony and synchronous multiplex railway telegraph
Granville T. Woods was awarded the patent for the steam boiler in 1884. Leveraging the communication technology of the late 1800s, he invented an apparatus that combined the functions of the telephone and the telegraph, called telegraphony. This groundbreaking system allowed telegraph stations to send both voice and text messages over the same line. Alexander Graham Bell’s company later purchased the technology’s patent.
Woods also invented the Synchronous Multiplex Railway Telegraph, a communication system that enabled railroad workers to determine the precise locations of trains on any given railway. This technology not only improved scheduling but also helped prevent railway accidents. Throughout his life, Woods received over 50 patents in various industries. Between 1900 and 1907, he was granted 20 patents for electronic devices that controlled trains. His numerous inventions earned him the nickname “The Black Edison.”