[QUOTE]\nThat... still doesn't explain this supposed "smiliarity of appearance"\nbetween a stillson and a monkey :)[/QUOTE]\n\nIt has nothing to do with appearance. It has to do with word & worker\nassociations and the age it came into being. There are several pieces\nof word origin mythology some of which are not factual and some which\nare conjecture.\nThe myth not supported by fact is the idea that "monkey wrench" was\nderived as a play on words using the name of a supposed inventor of the\ntool, one "Charles Moncky" as a source. However, this has been proven\nto be fabricated myth as there is no patent record as there is for\nDaniel Stillson & Loring Coes.\n\nA more likely origin lies in 19th century slang usage of the word\n"monkey" and how it was applied to workers doing repetitive work seen\nas beneath the more privileged. Among those workers would be boiler and\nsewerage workers, and plumbers all trades seen as inferior by\n"gentlemen" employing only "monkeys". In those days a pipe wrench would\nbe conspicuous in its use by any of those tradesmen, hence a wrench\nused by "monkeys". There would never be a need for a "gentleman" to\nknow what any tool was properly named.\nThe term "monkey" for those engaged in trades supporting the lifestyles\nof the rich and famous evolved in the 20th century when an auto\nmechanic was called a "grease monkey".\n[QUOTE]\nBut the tool doesn't look identical. The "pipe pliers" use a screw to\nadjust the head, then you pinch the handles (hence "pliers") to tighten the\ngrip around the pipe.[/QUOTE]\n\nPerhaps I should have said "similar" tool made for a similar purpose,\nrather than same tool.\n[QUOTE]\nThe monkey wrench seems to be just a sort of adjustable wrench, where the\ngrib around a pipe comes from the slanted jaws, or at least that's how it\nlooks to me.[/QUOTE]\n\nYup! that is how it works.