The Antique Wrench Patent Archive

Every grip the nineteenth century took on a nut

Quick-adjust jaw

Patent drawing of an 1855 screw-wrench showing a long handled tool with a fixed jaw, a sliding rack bar, a movable jaw with an eccentric shaft and thumb-piece, and cross-sections labeled a through f illustrating the screw engaging and disengaging the bar's rack.SCREW-WRENCHJoseph Hyde · October 2, 1855Patent drawing of an 1860 lever-action monkey wrench showing a hammer-head handle, a movable jaw operated by a pivoted lever and curved ratchet strip, and a wooden hand-hold grip.WRENCH.F. W. Kroeber · December 18, 1860Patent drawing of a fork-wrench showing two interlocking jaws (Fig. 1) with a pivoted lever having a pear-shaped cam-head sliding within a rectangular recess, and a separate sectional view (Fig. 2) of the sliding jaw's shank and flange.IMPROVEMENT IN FORK-WRENCHES.Daniel Witt · July 16, 1872Patent drawing of a 19th-century monkey wrench showing a perspective view with labeled jaws, sliding stem, threaded nut, and handle ferrule, along with a longitudinal cross-section and two transverse sections illustrating the locking nut mechanism.IMPROVEMENT IN WRENCHESCalvin H. Covell · November 20, 1877Patent drawing of a pipe wrench showing a handled shank ending in a toothed circular disk jaw, with a two-part hooked movable jaw pivoted eccentrically to grip a section of pipe, shown in side and edge views.IMPROVEMENT IN PIPE-WRENCHESSamuel W. Hudson · February 18, 1879Patent drawing of an adjustable pipe wrench showing a long handle with a fixed serrated jaw and a curved swinging upper jaw locked by a toothed pawl and set-screw clip, with detail views of the pawl, ears, and cross-section of the jaw assembly.WRENCH.James M. Watson · February 4, 1896