The Padlock Patent Archive

Three centuries of keeping things shut

Hasp lock

Patent drawing showing an oval metal lock-and-label sheath (Fig. 1) with a circular padlock mechanism at top labeled 'WASHINGTON,' alongside several other oval and rectangular sheath shells, edge views, and detachable printed city-name labels including BALTIMORE, PHILADELPHIA, NEW YORK, NEW ORLEANS, and FREDERICKSBURG.COMPOUND LOCK AND LABEL-SHEATH.Samuel W. Marsh · April 3, 1860Patent drawing of a hasp lock showing a hinged latch-hook engaging a staple, a lock-case with internal spring-loaded bolt and multiple lever tumblers, and a flat key used to release the mechanism, illustrated in five labeled figures with a signature block for inventor Joseph S. Elliott.IMPROVEMENT IN HASP-LOCKSJoseph S. Elliott · May 12, 1868Patent drawing of a heart-shaped padlock with an oval body, showing an internal spring, bolt, dog, tumblers, and a warded key, across ten labeled figures.IMPROVEMENT IN PADLOCKSBodo Wallmann · October 26, 1875Patent drawing of a hasp-lock showing a long hasp arm H attached to a circular lock case c containing an internal bolt mechanism with tumblers, teeth, and a staple, alongside a cross-sectional view and an inverted bolt view labeled Fig. 1 through Fig. 4.IMPROVEMENT IN HASP-LOCKS.Conrad Fichter · April 2, 1878Patent drawing of a cylindrical padlock with a heart-shaped hasp on the left, a key inserted into a raised chamber on top, and cutaway views below showing two interlocking sliding bolts with flanges and coiled springs.IMPROVEMENT IN PADLOCKSTheodor Heinrich Wichert · April 22, 1879Patent drawing showing a padlock's internal cross-latch mechanism, a U-shaped shackle, a warded key, and several small toothed latch pieces labeled with reference letters.IMPROVEMENT IN PADLOCKSWilliam P. Wirth and Theodor Heinrich Wichert · April 22, 1879Patent drawing of a round padlock with a hinged hasp (Fig. 1), two enlarged cross-sections of the internal bolt and key mechanism (Figs. 2 and 3), and a perspective view of the notched key cylinder (Fig. 4).IMPROVEMENT IN PADLOCKSHenry A. Dodge · August 19, 1879Patent drawing showing four views of a trunk permutation lock: a scalloped cover plate with tumbler recess, a hinged hasp with numbered dial and knob, the closed locked assembly, and a cross-sectional view revealing internal tumblers and pins.Permutation-Lock.Benjamin F. Kelly · January 11, 1881Patent drawing showing a trunk lock assembly with a front plate containing a keyhole and rotary bolt, a hinged hasp with a lettered permutation dial, internal lever and bolt mechanisms on the reverse plate, and separate detail views of a bit key and small locking plates.PERMUTATION TRUNK-LOCKJohn Kubler · December 6, 1881Patent drawing of a combined hasp lock showing three views: a plan view of the assembled hasp with pivoted hammer, an exploded plan view revealing the internal locking bar and pawl mechanism, and a side edge view showing the key engaging the locking bolt.HASP-LOCK.Joseph F. Robinson · March 21, 1882Patent drawing showing a metal hasp with a circular broken locking ring mounted at one end, plus detailed cross-sections of the internal spring-loaded locking pin and a key-operated padlock variant.HASP-LOCK.Byron D. West · February 19, 1884Patent drawing showing a metal hasp bar with a pivoted hook, a circular key-operated lock mechanism, and a locking staple slot, illustrated in three views: front elevation, plan section, and front elevation with lock-plate removed.HASP-LOCKWilliam Fry · May 20, 1884Patent drawing showing a pair of paneled double doors with an ornate pivoted lock hasp and hook mounted at their meeting edge, plus enlarged detail views of the hook's wedge-shaped head, spring-lock housing, and key.COMBINED LOCK HASP AND HOOK.Frank N. Mihills · June 9, 1885Patent drawing showing a long curved hasp with a hook-prong end, a cutaway lock mechanism with an internal sliding bolt and spring, a cam-notched key head, and a modified chain-attached hasp variant.HASP-LOCK.Charles P. Pond · June 30, 1885Patent drawing of a Scandinavian-style padlock showing a cutaway body with shackle B, notched tumbler C, clutch plate D, interchangeable wards G H I, and a spring-loaded key E with double bits, alongside smaller face-view details of the tumbler, clutch, and wards.PADLOCK.Samuel McCarter · July 28, 1885Patent drawing of a round padlock with an arched hasp, showing internal locking-tumblers and guard-tumblers arranged around a central pivot stud, plus a detail of two tumblers and the notched key used to operate it.PADLOCKFrank W. Mix · April 12, 1887Patent drawing of a hasp-lock plate with an internal rotating lock-bolt, key-post, and button, alongside smaller detail views labeled Fig. 2 through Fig. 11 showing the stamped sheet-metal parts including the collet, button, and key-post assembly.HASP-LOCK.Frank W. Mix · June 28, 1887Patent drawing showing an elongated metal hasp plate with a recessed slot displaying the words NEW YORK as an address tag, alongside a separate lock case with an internal pivoted hook and bolt mechanism shown in cutaway view.COMBINED TAG-HOLDER AND HASP-LOCK.Robert W. Greene · February 21, 1888Patent drawing sheet showing a round padlock with a curved hasp (B) and casing (A), plus eight numbered figures illustrating the internal sliding plate, pivoted tumbler sections, locking bolt, gears, and a flat key, with inventor's signature and witness signatures at bottom.PADLOCK.Willard D. Doremus · April 28, 1891Patent drawing of a shield-shaped bicycle lock showing internal tumblers and bolts, a U-shaped hasp passing through the lock body, and a mounting clamp attaching the lock to a bicycle's steering head with the hasp threaded between wheel spokes.BICYCLE-LOCK.Edwin W. Macauley · August 23, 1892Patent drawing of a circular padlock mechanism showing a rotary bolt, spring tumbler, pivoted dog, and hasp slot, with eight labeled cross-section and elevation figures.PADLOCK.Henry Roland · August 3, 1897Patent drawing sheet showing eleven figures of a hasp padlock, including side elevations, sections, and detail views of the bolt, retaining-bar, ward-plate, key, and staple, with numbered reference lines pointing to internal parts.PADLOCKDaniel Krekes · May 16, 1899Patent drawing of a Lewis A. Brown padlock showing two pivoted半-round members with an internal spring hook, shoulder, marked disk guard, and cross-sectional views labeled Figures 1 through 9.PADLOCKLewis A. Brown · January 11, 1916Patent drawing sheet showing nine figures of a circular padlock mechanism: an assembled front view with looped hasp links, an exploded interior view revealing stacked tumblers and a pivoting locking bolt, a separate cover plate with slots, a perspective locking bolt with curved ends, a hasp element, a tumbler and spring, a latching device, a bitted key, and a modified door-mounting hasp assembly with screws.LOCKAngelo C. Messina and Joseph Messina · October 2, 1923Patent drawing of an egg-shaped padlock housing shown applied to a hinged hasp with a staple, plus a cutaway longitudinal section revealing an internal spring-loaded tumbler, bolt, and key mechanism.PADLOCKWilliam Gordon Parmele · July 14, 1925Patent drawing of a cylindrical padlock mechanism showing the main lock-member with a threaded plug, key slot, spring tumblers, and a complemental screw-driven member with mating jaws, illustrated in perspective, cross-section, and detail views labeled Fig. 1 through Fig. 5.LOCKLyle B. Shinn · August 28, 1934