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The Antique Wrench Patent Archive

Every grip the nineteenth century took on a nut

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Quick-adjust nut wrench

Patent drawing of a ratchet monkey wrench showing the long handle, a rotatable jawed head with sliding jaws, an internal ratchet ring, and detail views of the linkage bolt and dog mechanism.

RATCHET MONKEY-WRENCHClayton E. Frederickson · June 7, 1898

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