Thomas Edison: Facts, House & Inventions ‑ HISTORY (2024)

Thomas Edison’s Early Life

Thomas Alva Edison was born on February 11, 1847, in Milan, Ohio. He was the seventh and last child born to Samuel Edison Jr. and Nancy Elliott Edison, and would be one of four to survive to adulthood. At age 12, he developed hearing loss—he was reportedly deaf in one ear, and nearly deaf in the other—which was variously attributed to scarlet fever, mastoiditis or a blow to the head.

Thomas Edison received little formal education, and left school in 1859 to begin working on the railroad between Detroit and Port Huron, Michigan, where his family then lived. By selling food and newspapers to train passengers, he was able to net about $50 profit each week, a substantial income at the time—especially for a 13-year-old.

Did you know? By the time he died at age 84 on October 18, 1931, Thomas Edison had amassed a record 1,093 patents: 389 for electric light and power, 195 for the phonograph, 150 for the telegraph, 141 for storage batteries and 34 for the telephone.

During the Civil War, Edison learned the emerging technology of telegraphy, and traveled around the country working as a telegrapher. But with the development of auditory signals for the telegraph, he was soon at a disadvantage as a telegrapher.

To address this problem, Edison began to work on inventing devices that would help make things possible for him despite his deafness (including a printer that would convert electrical telegraph signals to letters). In early 1869, he quit telegraphy to pursue invention full time.

Edison in Menlo Park

From 1870 to 1875, Edison worked out of Newark, New Jersey, where he developed telegraph-related products for both Western Union Telegraph Company (then the industry leader) and its rivals. Edison’s mother died in 1871, and that same year he married 16-year-old Mary Stillwell.

Despite his prolific telegraph work, Edison encountered financial difficulties by late 1875, but one year later—with the help of his father—Edison was able to build a laboratory and machine shop in Menlo Park, New Jersey, 12 miles south of Newark.

With the success of his Menlo Park “invention factory,” some historians credit Edison as the inventor of the research and development (R&D) lab, a collaborative, team-based model later copied by AT&T at Bell Labs, the DuPont Experimental Station, the Xerox Palo Alto Research Center (PARC) and other R&D centers.

In 1877, Edison developed the carbon transmitter, a device that improved the audibility of the telephone by making it possible to transmit voices at higher volume and with more clarity.

That same year, his work with the telegraph and telephone led him to invent the phonograph, which recorded sound as indentations on a sheet of paraffin-coated paper; when the paper was moved beneath a stylus, the sounds were reproduced. The device made an immediate splash, though it took years before it could be produced and sold commercially.

Edison and the Light Bulb

In 1878, Edison focused on inventing a safe, inexpensive electric light to replace the gaslight—a challenge that scientists had been grappling with for the last 50 years. With the help of prominent financial backers like J.P. Morgan and the Vanderbilt family, Edison set up the Edison Electric Light Company and began research and development.

He made a breakthrough in October 1879 with a bulb that used a platinum filament, and in the summer of 1880 hit on carbonized bamboo as a viable alternative for the filament, which proved to be the key to a long-lasting and affordable light bulb. In 1881, he set up an electric light company in Newark, and the following year moved his family (which by now included three children) to New York.

Ask History: Who Really Invented the Light Bulb

Though Edison’s early incandescent lighting systems had their problems, they were used in such acclaimed events as the Paris Lighting Exhibition in 1881 and the Crystal Palace in London in 1882.

Competitors soon emerged, notably Nikola Tesla, a proponent of alternating or AC current (as opposed to Edison’s direct or DC current). By 1889, AC current would come to dominate the field, and the Edison General Electric Co. merged with another company in 1892 to become General Electric.

Later Years and Inventions

Edison’s wife, Mary, died in August 1884, and in February 1886 he remarried Mirna Miller; they would have three children together. He built a large estate called Glenmont and a research laboratory in West Orange, New Jersey, with facilities including a machine shop, a library and buildings for metallurgy, chemistry and woodworking.

Spurred on by others’ work on improving the phonograph, he began working toward producing a commercial model. He also had the idea of linking the phonograph to a zoetrope, a device that strung together a series of photographs in such a way that the images appeared to be moving. Working with William K.L. Dickson, Edison succeeded in constructing a working motion picture camera, the Kinetograph, and a viewing instrument, the Kinetoscope, which he patented in 1891.

After years of heated legal battles with his competitors in the fledgling motion-picture industry, Edison had stopped working with moving film by 1918. In the interim, he had had success developing an alkaline storage battery, which he originally worked on as a power source for the phonograph but later supplied for submarines and electric vehicles.

In 1912, automaker Henry Ford asked Edison to design a battery for the self-starter, which would be introduced on the iconic Model T. The collaboration began a continuing relationship between the two great American entrepreneurs.

Despite the relatively limited success of his later inventions (including his long struggle to perfect a magnetic ore-separator), Edison continued working into his 80s. His rise from poor, uneducated railroad worker to one of the most famous men in the world made him a folk hero.

More than any other individual, he was credited with building the framework for modern technology and society in the age of electricity. His Glenmont estate—where he died in 1931—and West Orange laboratory are now open to the public as the Thomas Edison National Historical Park.

Sources

Thomas Edison’s Greatest Invention. The Atlantic.
Life of Thomas Alva Edison. Library of Congress.
7 Epic Fails Brought to You by the Genius Mind of Thomas Edison. Smithsonian Magazine.

Thomas Edison: Facts, House & Inventions ‑ HISTORY (2024)
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