The Antique Wrench Patent Archive

Every grip the nineteenth century took on a nut

Ferrule

Patent drawing of a monkey-style screw wrench showing the long handle, stationary and sliding jaws labeled B and B', the threaded shank A, and an exploded detail of the knurled rosette D with its grooves and projections at Fig. 2.IMPROVEMENT IN WRENCHESGeorge C. Taft · November 10, 1863Patent drawing of an adjustable nut wrench with a wooden handle, showing a hollow metal stem with a sliding jaw adjusted by a screw, plus cross-section details of the socket, washer, and ferrule assembly.IMPROVEMENT IN WRENCHESDaniel Campbell · October 4, 1870Patent drawing showing a sectioned monkey wrench with a tapering square bar, a fixed jaw at top, a sliding jaw threaded onto a central screw, and a wooden handle secured by a ferrule block with a quill tube, alongside separate perspective views of the sliding jaw and the bare tapering bar body.IMPROVEMENT IN WRENCHES.Alonzo Whitcomb · November 7, 1871Patent drawing showing a side sectional view of a monkey wrench with wooden handle D, adjustable jaw B, threaded screw C, and shank A, plus a small cross-sectional Fig. 2 detail.IMPROVEMENT IN WRENCHES.Luke Chapman · November 21, 1871Patent drawing of an 1875 adjustable screw wrench showing a fixed jaw C, a sliding jaw G on an angular bar B, a threaded adjustment screw with milled head M, and a wooden handle E attached via a ferrule H, with cross-sectional figures 2 through 4 illustrating the hexagonal bar profile and jaw fit.IMPROVEMENT IN WRENCHESOtis T. Bedell · January 12, 1875Patent 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, 1877