The Antique Wrench Patent Archive

Every grip the nineteenth century took on a nut

Spring-loaded jaw

Patent drawing of an 1864 pipe wrench showing a long straight lever with a hooked, toothed movable jaw hinged near the handle end, plus a detail view of the eccentric jaw with four teeth.IMPROVED PIPE-WRENCH.William Pearson · August 23, 1864Two side-by-side patent drawings of a 19th-century pipe wrench showing a long bar with a curved fixed jaw B at top, a hinged serrated jaw D held by a spring, a sliding case C with screw-nut J, and a wooden handle G secured by ferrule F and nut H at the base.IMPROVEMENT IN WRENCHIra Morse · April 21, 1868Patent 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 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, 1873Side elevation of a monkey wrench showing the main lever A with fixed and movable jaws B, a threaded arm C locked by a half-nut D, a pivoted lever F, and a turned wooden handle G with a cam ferrule H,I at its base.IMPROVEMENT IN WRENCHESWilliam H. Crittendon · April 21, 1874Patent 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, 1875Patent drawing of a pipe wrench showing a toothed revolving disk (B) paired with a pivoted hook-jaw (D) at the head of a long handle (A), with a rear view of the handle showing internal bolts C and E and a spring F, plus a small separate toothed insert piece G.IMPROVEMENT IN PIPE-WRENCHESEliphalet H. Adams and Asher F. Gates · January 18, 1876Two 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 19th-century monkey wrench showing side, back, and cross-section views with labeled parts including the fixed jaw C, movable jaw D, adjusting screw E, sliding bar A, handle B, spring H, and control lever J.IMPROVEMENT IN WRENCHESEdward H. Knight · May 30, 1876Patent drawing of a pipe wrench showing a long wooden handle attached to a shank with a fixed toothed jaw and an adjustable sliding bar bearing a spring-mounted wedge-shaped jaw, with a cutaway section revealing the internal ratchet and spring mechanism.IMPROVEMENT IN PIPE TONGS OR WRENCHES.Edward B. O'Kelly · August 28, 1877Patent drawing showing two interchangeable attachments for a handle: Fig. 1 depicts a curved cutting blade with a hooked jaw and adjusting thumb-screw, and Fig. 2 depicts a serrated wrench jaw with a similar curved handle and slot for the pivot bolt.IMPROVEMENT IN PIPE-WRENCHES WITH CUTTERS.William L. Truland · September 24, 1878Patent drawing showing a long-handled wrench with a sliding jaw bar containing internal spring-loaded roller chambers, shown in assembled and open views with detail insets of the roller and cover plate.AUTOMATIC SELF-SETTING WRENCHBenjamin F. Bennett · November 6, 1883Patent 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 pipe wrench with a long toothed handle bar, a sliding two-part box, and a swinging trunnion-mounted grip jaw gripping a pipe, with additional cross-section and detail views of the box and jaw parts.PIPE-WRENCHOramel Charles Stanley · July 12, 1898