In honor of Black History Month, here are few profiles of contributors to history of African descent:
Granville T. Woods
Granville T. Woods was such a prolific inventor, he is often called the black Thomas Edison. Woods holds more than 50 patents for such inventions as the egg incubator and a steam boiler furnace. But his most significant invention, the synchronous multiplex railway telegraph (patented in 1887), allowed railway stations to communicate with moving trains. Because dispatchers were better able to locate trains, rail accidents were significantly reduced.
Dr. James E. West
Electret Microphone Inventor
Ninety percent of microphones used today are based on the ingenuity of James Edward West, an African-American inventor born in 1931 in Prince Edwards County, VA. If you’ve ever talked on the telephone, you’ve probably used his invention.
Dr. James E. West and a colleague, Gerhard Sessler, developed the mic (officially known as the Electroacoustic Transducer Electret Microphone) while with Bell Laboratories, and they received a patent for it in 1962. The acoustical technologies employed became widely used for many reasons including high performance, acoustical accuracy and reliability. It is also small, lightweight and cost effective. Continue reading