I have always wondered why they are called “monkey wrench”. Does anyone see any similarity to a monkey? They are beautiful and have a personality of their very own.
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From wikipedia(http://en.wikipedia.org/wiki/Monkey_wrench):
That handy tool, the "monkey-wrench", is not so named because it is a handy thing to monkey with, or for any kindred reason. "Monkey" is not its name at all, but "Moncky." Charles Moncky, the inventor of it, sold his patent for $2000, and invested the money in a house in Williamsburg, Kings County, where he now lives.
The quote came from 408 of "The Bizarre Notes and Queries in History, Folk-lore, Mathematics, Mysticism, Art, Science, Etc." which can be found here:
http://books.google.com/books?id=7CMAAAAAYAAJ&pg=RA2-PA408&dq=moncky&lr=&as_brr=0&ei=6wihSLEbhqqyA7KPlJ4F#v=onepage&q=moncky&f=false