Year: Day to Day Men: January 30
Ginger on White
January 30th of 1910 marks the death of African-American inventor Granville Tailer Woods who registered nearly sixty patents in his lifetime and made vital contributions to the railroad industry. He also made improvements to technological devices such as the telephone, telegraph and phonograph.
Born in Columbus, Ohio in April of 1856, Granville Woods received little education as a young man. As a teenager, he was employed in a variety of work including as a steel mill worker and an engineer in both a railroad machine shop and onboard the British steamer, Ironsides. Between 1876 and 1878, Woods resided in New York City and took courses in engineering and electricity, subjects he knew were necessary for industry’s future.
Returning to Ohio in 1878, Woods was employed by the Springfield, Jackson and Pomeroy Railroad Company for eight months and later by the Dayton and Southeastern Railroad Company as an locomotive engineer for thirteen months. It was during this time that he began to form ideas for his later invention, the inductor telegraph. In the spring of 1880, Woods moved to Cincinnati where he founded the Woods Electric Company to develop, manufacture and sell electrical apparatus. In 1884, he filed his first patent for an improved steam boiler furnace; his later patents were predominantly for electrical devises.
Granville Wood’s 1885 patent for an improved telephone transmitter, which allowed a station to send voice as well as Morse code over a single wire, was purchased by the American Bell Telephone Company owned by Alexander Graham Bell. In 1887, he secured his patent for the creation of a magnetic coiled-wire field, that placed under a train, enabled communication between stations and moving trains by using the ambient static electricity of the existing telegraph lines. Challenged twice in court by Thomas Edison over the rights to this patent, Woods defeated Edison by proving there were no existing devices by which he could have relied on to make his device.
Woods manufactured a system of overhead electric conducting lines for railroads, an idea he modeled after a system developed by Charles van Depoele. Wood’s 1888 patent relied on wire brushes to make connections with metallic terminal heads, without exposing wires, through electrical contact rails. Once the train car had passed, the wires were no longer live and risk of injury was diminished. The invention was successfully tested in 1892 on the Figure Eight Roller Coaster in Coney Island. Patented in 1893, Woods sold the patent to General Electric in 1901.
In 1896, Granville Woods patented a system for controlling electrical lights in theaters, which became known as the safety dimmer. This device was safe and efficient and saved theaters forty per cent of electricity use. Between 1902 and 1907, Woods patented twelve devices that made improvements on the country’s railway system. Among these were devices that improved motor and vehicle control, automatic air brakes, and safety apparatus.
The first African American mechanical and electrical engineer after the Civil War, Granville Tailer Woods died of a cerebral hemorrhage at New York City’s Harlem Hospital on the 30th of January in 1910. His burial at St. Michael’s Cemetery in East Elmhurst, New York was without headstone or ceremony. In 1975 with donations from cooperations that used Woods’s patents, a headstone was erected at his grave site. In 2006, Granville T. Woods was inducted into the National Inventors Hall of Fame in Alexandria, Virginia.