The Antique Wrench Patent Archive

Every grip the nineteenth century took on a nut

Self-adjusting wrench

Patent drawing of a 19th-century pipe wrench showing five views: two side elevations with toothed jaws and a curved pivoting claw, a rear view of the split prongs, a cross-section revealing the internal spring mechanism, and a final view of the wrench clamped onto a pipe.IMPROVED PIPE-WRENCH.James R. Brown · October 18, 1864Patent drawing showing several views of a self-adjusting screw wrench with a wooden handle, sliding jaws, and internal pin-and-slot mechanism labeled Figures 1 through 8.IMPROVEMENT IN WRENCHESPhilip Sommer · January 29, 1867Patent drawing of a self-adjusting pipe wrench showing a long handle with a curved fixed jaw and a swinging toothed movable jaw connected by a pivot and spring mechanism, shown in both elevation and cross-section views.Self-Adjusting Pipe-Wrenches.Turner Williams · February 25, 1873Patent drawing of a curved pipe wrench with a hooked serrated dog pivoting at the jaw end, shown gripping a small pipe in Figure 1 and a large pipe in Figure 2, with a cross-section of the pivot joint in Figure 3.IMPROVEMENT IN PIPE-WRENCHESHenry B. Wheatcroft · December 2, 1873Patent drawing of a hollow-handled wrench shown in vertical cross-section, with threaded jaw shanks visible inside, plus two small circular cross-section diagrams labeled Fig. 2 and Fig. 3 showing the oblong and round threaded shank profiles.WRENCHJames Shepard · March 27, 1877Patent drawing showing a pipe wrench lever with a toothed end, several interchangeable curved toothed hooks, a spring ratchet-catch mechanism, and two views of the lever and hook assembled in open and closed positions.IMPROVEMENT IN PIPE-WRENCHES.Eliezer Rees Mathews · April 17, 1877Patent drawing of a wrench with a sliding toothed jaw on a main bar, a hinged lever handle connected by pivoted fulcrum braces, and a small locking loop clasp, shown in four figures.SELF-ADJUSTING FULCRUM-LEVER WRENCHBenjamin F. Bennett · April 15, 1884Patent drawing of a pipe wrench showing a long tapered handle bar with a serrated head, a hinged slotted jaw piece, and a wire spring looping around studs to hold the jaws closed.PIPE-WRENCHGeorge M. Gillett · March 30, 1886Patent drawing of a wrench with an elongated tapered handle ending in a screwdriver tip at top and a curved gripping jaw with ratchet teeth at bottom, with two detailed close-up views (Fig. 1 and Fig. 2) showing the pivoting jaw, coiled spring, set-screw, and locking lug mechanism.WRENCHAlbert Langstrom · June 1, 1886Patent drawing of a combined pipe and nut wrench showing two hinged jaws, one smooth curved and one with a corrugated removable face-plate, connected via a pivoted link and toggle mechanism to a long handle, with numbered reference lines pointing to each part.COMBINED PIPE AND NUT WRENCH.Robert James Thompson · July 7, 1896