He invented the modern adjustable pipe wrench. He was a machinist during the American Civil War and served on David Glasgow Farragut"s first voyage as a vice admiral. At the end of the Civil War, Stillson returned to Charlestown, Massachusetts, and eventually he moved to Somerville, Massachusetts.
He then worked as a machinist at the J. J. Walworth Company in the Cambridgeport section of Cambridge, Massachusetts.
While at the J. J. Walworth Company, he developed his pipe wrench. On September 13, 1870, he was issued his patent.
Stillson was paid about $80,000 in royalties during his lifetime. He died on August 23, 1899, and is buried at Mount Auburn Cemetery in Cambridge and Watertown, Massachusetts.
United States. 95,744.