By Shomari Wills
"USA250: The Story of the World's Greatest Economy" is a yearlong WSJ series examining America's first 250 years. Read more about it from Editor in Chief Emma Tucker.
In the 1880s, a little-known figure arrived suddenly on the American engineering scene with a series of patents for innovative rail technologies. Little else was known about the inventor beyond his name: Granville T. Woods. Woods dressed in black, kept largely to his shop and moved through Cincinnati as a figure half-seen; some whispered that he wasn't American at all.
The truth, in the early years of the post-slavery era, was more startling. Woods was a Black man -- and he was preparing to make a claim that would reverberate through the highest corridors of American industry: that he had devised a way for moving trains to communicate wirelessly.
Woods didn't announce his invention from a lecture hall or an exhibition floor. He put it forth in a filing with the U.S. Patent Office in 1887. In his paperwork, he described a system for transmitting telegraphic signals to and from moving trains by means of electromagnetic induction -- messages sent through the air, without physical contact. His vision was rendered in neat, compact handwriting and precise, spare line drawings that made clear this wasn't speculative theory. It was a working system.
The papers caught the attention of Thomas Edison, then 40 years old, rumpled, ascetic and already the most powerful figure in American electrical innovation. Edison confirmed that Woods's invention was real and functional. He didn't regard it as a marvel, but as a challenge.
Within weeks, Woods was sued by Edison's company. The lawsuit claimed the invention infringed on Edison's own work -- a familiar maneuver in an era when patent law functioned as both shield and weapon. Woods would spend years in court in direct contention with the nation's most formidable inventor, a struggle that would earn him the respect of the engineering community and, eventually, Edison himself. It would also earn him an uneasy sobriquet: "the Black Edison."
A life on the rails
Granville Thomas Woods was born on April 23, 1856, to free Black parents near Columbus, Ohio. A state that prohibited slavery from its founding and sustained a strong industrial economy, Ohio became an oasis for African-Americans seeking legal freedom during the slave era. Columbus, a rough-hewed industrial town, had a sizable Black population, as well as Black schools, churches and businesses.
According to a biography of Woods published in 1887, he attended school until about the age of 10, learning basic reading, writing and arithmetic, before leaving to apprentice in blacksmithing and machining. As a teenager, Woods left Columbus for Missouri in 1872 to take a job as a railroad fireman.
His days on the railroad involved long hours shoveling coal into the furnaces that fed locomotive steam engines. When fires broke out, flames could engulf an entire train car, forcing Woods to act quickly to contain the blaze with buckets of water and shovelfuls of sand. Derailments and technical failures also were routine. According to later biographical accounts, it was during this period that Woods began to ruminate on how rail transportation might be improved -- a pursuit that would come to define his life.
Invention as survival
Working the rails left Woods with long stretches of downtime in Missouri. According to biographer William J. Simmons, Woods was uninterested in saloons, instead devoting himself to studying an emerging technology -- electricity. Like Nikola Tesla and Edison, Woods believed electricity was the future and committed himself to mastering it.
In his 20s, Woods moved east to New York, where he took engineering classes and worked nights in a machine shop. In 1878, he accepted a position as an engineer aboard the Ironsides, a British steamship. The job placed him inside some of the most advanced mechanical environments of the era and carried him to ports across the globe. "I saw nearly every country," he later told Simmons.
When he returned to the U.S. in the early 1880s, Woods settled in Cincinnati, an industrial metropolis, and began inventing in earnest. His early patents bore the marks of his experience working on trains: more-efficient steam-boiler furnaces, improved braking systems, electrical regulators and a combined telegraph-and-telephone communication device.
During these years, Woods learned not to advertise his race. "I have been frequently refused work because of the previous condition of my race," he recalled to Simmons. Contemporary newspaper reports suggested that Woods sometimes allowed rumors to circulate that he was Australian rather than African-American, an ambiguity that may have eased the reception of his work.
Things changed when Woods sold his combined telephone-and-telegraph invention to Alexander Graham Bell's company. He used the proceeds to go into business for himself as a full-time inventor.
To inaugurate his new enterprise, Woods commissioned a portrait. In the image he has dark skin, receding curly hair, a thick handlebar mustache, deep-set eyes and a dark suit emblazoned with a crest. Placing his likeness alongside his work put to rest any doubt about his race or nationality and announced his arrival. "The day is past," he said in 1887, according to Simmons, "when the colored boys will be refused work only because of race prejudice."
The induction telegraph
From this foundation, Woods unveiled his most consequential claim. In his 1887 patent for the "induction telegraph," he described a system that allowed moving trains to communicate without physical contact. "My invention relates to improvements in telegraphy," Woods wrote, "the object being to transmit signals between moving bodies without physical connection."
The induction telegraph drew immediate attention not only for its ingenuity but for its implications. Whoever controlled wireless communication on railroads would help determine the future of transit itself. Edison's legal challenge failed. The U.S. Patent Office ruled -- more than once -- that Woods was the prior inventor.
After their legal battle, Edison invited Woods to become a business partner. According to Simmons, discussions took place about Edison acquiring Woods's company, but no agreement was reached.
Through the late 1880s and 1890s, Woods remained independent and invented prolifically -- nearly 60 inventions in all -- but autonomy came at a cost. Constant litigation drained his finances. Woods's courtroom success was itself notable: African-Americans had only recently secured the constitutional right to testify in federal courts.
Within many Black communities, Woods had become a household name because of his legal battles. His repeated efforts to protect his intellectual property were often viewed not as personal belligerence but as part of a longer historical pattern. During slavery, Black inventors were routinely denied patents or saw their ideas claimed by others. Ben Montgomery, an enslaved man, developed an improved steamship propeller in 1854 but couldn't patent it. Edmond Albius devised the hand-pollination technique that made vanilla cultivation commercially viable; he died in poverty after emancipation. Against that history, the challenges Woods faced struck many observers as something more than coincidence.
The strain of continual legal battles took a toll. Woods's short-lived marriage ended in divorce, and he left Ohio for New York City.
Calamity as instruction
In March 1888, New York was struck by the Great Blizzard. Snow paralyzed the city. Power lines snapped. Transit collapsed. For Woods, calamity became instruction.
He turned his attention to the danger the storm had exposed: overhead power lines and exposed cables. Woods developed methods for routing electrical power underground, helping to establish the foundations of what later became known as the third-rail system.
In the early 20th century, Woods continued to innovate, developing overhead conducting systems that allowed electric streetcars and trolleys to replace steam power. He also helped develop early safety-control mechanisms, including what became known as the dead man's switch.
Woods died in 1910, without wealth or lasting fame. His ideas endured because they vanished -- absorbed into systems so essential they no longer announce themselves.
From wireless train communication to electric-power delivery and the foundations of the third rail, Woods helped transform rail travel from a chaotic system into a reliable one -- work later acknowledged by New York City's Metropolitan Transportation Authority and the U.S. Transportation Department, and still embedded in how modern transit moves millions every day.
Shomari Wills is a TV news producer, journalist and the author of "Black Fortunes: The Story of the First Six African-Americans Who Survived Slavery and Became Millionaires." He can be reached at reports@wsj.com.
(END) Dow Jones Newswires
April 18, 2026 10:00 ET (14:00 GMT)
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