Pipe wrench Pipe wrench A pipe wrench is any of several types of wrench that are designed to turn threaded pipe and pipe fittings for assembly (tightening) or disassembly (loosening). Especially in North America, the Stillson wrench or Stillson-pattern wrench is the usual form of pipe wrench. (The name comes from the original patent holder, who licensed the pattern to multiple manufacturers; the patent expired decades ago.) Another type of wrench often used on pipes, the plumber wrench, is also often called a pipe wrench, depending on locale. The Stillson type is an adjustable wrench/spanner with hardened serrated teeth on its jaws;
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