The Antique Wrench Patent Archive

Every grip the nineteenth century took on a nut

Serrated jaw

Patent drawing showing three views of a wooden-handled adjustable wrench with a permanent upper jaw, a sliding lower jaw adjusted by a threaded stem and nut, plus detail views of the jaw's internal recess and cross-sections.IMPROVEMENT IN DUPLEX WRENCHAugustus Ball Davis · August 9, 1870Patent drawing showing a pipe wrench with a long tapered lever handle, a curved pivoted upper jaw with serrated gripping surface, a set-screw, and a coiled spring mechanism, shown in side and edge views.IMPROVEMENT IN PIPE-WRENCHES.Henry A. Hyle · November 28, 1871Patent 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 showing four figures of a 19th-century pipe wrench: a long straight handle (a) ending in a curved goose-neck jaw with a hooked head (c), a pivoted serrated tongue (d) held by an internal coil spring (g) and pin (j), shown in three cross-section views and one detached close-up of the jaw mechanism.IMPROVEMENT IN PIPE-WRENCHES.Charles H. Fulmer · March 2, 1875Two side-by-side technical drawings of a 19th-century pipe wrench, one showing the exterior elevation with a curved hook-jaw, threaded shank, sliding nut, and turned wooden handle, and the other a longitudinal cross-section revealing the internal screw threads and hatched metal components.IMPROVEMENT IN PIPE-WRENCHESIsaiah Cressey · March 7, 1876Patent drawing of a pipe wrench showing a hooked stationary jaw with inward-pointing teeth, a movable toothed jaw sliding on a threaded shank through a slotted frame, an egg-shaped adjusting nut, and a long tapered wooden handle, with a separate cross-section view labeled Fig. 2 showing the nut and slot arrangement.IMPROVEMENT IN PIPE-WRENCHESLawrence Glynn · May 7, 1878Patent 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 showing a long handle with a sliding, bolt-locked head bearing a pivoted hook-shaped serrated jaw opposite a fixed angular serrated jaw, with a separate cross-sectional detail of the head assembly.WRENCHBenjamin Blanton Farris · March 10, 1891Patent drawing showing a pipe wrench with a long straight lever ending in a serrated jaw, paired with a curved sliding jaw featuring a slotted shank, shown in five views including side elevations, detached perspectives, and a cross-section.PIPE-WRENCH.James P. Kennedy · May 4, 1897