Joseph Glidden applies for a patent for a reinforced wire fence that placed the barbs along a wire and then twisted another wire around it to keep the barbs in place, an improvement over Michael Kelly's 1868 invention that "twisted two wires together to form a cable for barbs.
Nine patents for improvements to wire fencing were granted by the U.S. Patent Office to American inventors, beginning with Michael Kelly and ending with Joseph Glidden in November 24 1874 when he was 61 years old. By the time of his death in 1906, he was one of the richest men in America. More
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