Joseph Barker Stearns

Lore & Background

Joseph Barker Stearns was born in Weld, Maine, the son of Edward Ray and Eliza Tyler Barker Stearns. He worked on a farm as a youth before studying telegraphy in Newburyport, Massachusetts, where he became manager of the office. From 1855 to 1869, he served as superintendent of the Fire Alarm Telegraph Company of Boston, and was the first to patent the use of reversed currents in connection with fire alarm signal systems.

Stearns served as president of the Franklin Telegraph Company from 1869 to 1871, during which time he invented the first practical duplex telegraphy system. The system was successfully applied to the English, French, and Belgian lines, and two years later was used for the Atlantic cables. He sold rights under his duplex patents to Western Union Telegraph and Cable Companies, and received large royalties from governments in England, France, Italy, Spain, Belgium, Russia, and India, as well as from several submarine cable companies.

From 1879 to 1880, Stearns worked as an engineer for the Mexican Telegraph Company, helping to make, lay, and put into operation cables between Galveston, Texas, and Veracruz, Mexico. In 1881, he performed similar work for the Central and South American Telegraph Company on cables extending from the Isthmus of Tehuantepec in Mexico to Callao, Peru—between 4,000 and 5,000 miles of cable—completed in 1882. He retired in 1885 and settled in Camden, Maine, where he maintained a library of 10,000 volumes, a collection of Chiriquí Province pottery exhibited at the Smithsonian Institution, and a collection of carved ivories exhibited at the Metropolitan Museum of Art. He died in Camden.

Reader's Guide

Stearns’s duplex telegraphy system was a landmark in telegraphic communication, enabling two messages to travel simultaneously in opposite directions on a single wire, effectively doubling the capacity of existing lines without requiring new infrastructure. This innovation came at a time when telegraph networks were expanding rapidly, and the ability to increase throughput was of great economic and operational importance. The system’s successful deployment on English, French, and Belgian lines, and later on the Atlantic cables, demonstrated its reliability and global applicability. Stearns’s patents were licensed to Western Union and numerous foreign governments and cable companies, generating substantial royalties and cementing his place in telegraph history. His work also extended to submarine cable laying in the Gulf of Mexico and along the Pacific coast of South America, where he oversaw the construction and installation of thousands of miles of cable. The Great Medal of Honor awarded by the American Institute of New York in 1872 recognized the significance of his duplex invention. Stearns’s legacy is that of a practical engineer whose invention became a standard component of telegraphy worldwide, and his collections of pottery and ivories, later exhibited at major museums, reflect a broader intellectual curiosity beyond his technical achievements.

Did You Know?

• His duplex telegraphy system was used on the Atlantic cables two years after its successful application on European lines.
• He received royalties for his duplex patents from governments in England, France, Italy, Spain, Belgium, Russia, and India.
• Stearns owned a collection of Chiriquí Province pottery that was exhibited at the Smithsonian Institution.