Daniel Chapman Stillson Daniel Chapman Stillson Daniel Chapman Stillson (March 25, 1826 - August 23, 1899) was an American inventor. He invented the modern adjustable pipe wrench. He was born March 25, 1826 in Durham, New Hampshire. He was the son of William Stillson and Nancy Chapman. He married Ellen Raynes Davis on April 18, 1855. He was a machinist during the American Civil War and served on David Glasgow Farraguts 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
Celt (tool) thus wrongly assumed to be a type of ancient chisel. Early eighteenth century antiquarians, such as Lorenz Beger, then adopted the word for the stone and bronze tools they were finding at prehistoric sites; the "OED" suggests that the imaginary etymological connection with the Celts may have assisted its passage into common use. A shoe-last celt was a polished stone tool used during the early European Neolithic for felling trees and woodworking. Celt (tool) In archaeology, a celt is a long, thin, prehistoric, stone or bronze tool similar to an adze, a hoe or axe-like tool. The term "celt" came