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Publication numberUS546969 A
Publication typeGrant
Publication dateSep 24, 1895
Filing dateJul 22, 1895
Publication numberUS 546969 A, US 546969A, US-A-546969, US546969 A, US546969A
InventorsStefano Bozano
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 546969 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

(No Model.)


No, 546,969. Patented Sept. 24, 1895.




SPECIFICATION forming part of Letters Patent hi0. 546,969, dated September 24, 1895.

Application filed July 22, 1895- Serial No. 556,677. (No model.)

To all whom it may concern.-

Be it known that I, STEFANO BOZANO, a citizen of Italy, and a resident of Mattapan, in the county of Suffolk and State of Massachusetts, have invented new and useful Improvements in Permutation-Locks, of which the following, taken in connection with the accompanying drawings, is a specification.

This invention relates to improvements in permutation-locks of the kind generally termed letter or puzzle locks, and it is carried out as follows, reference being had to the accompanying drawings, wherein Figure 1 represents an outside elevation of the improved lock, shown in a locked position. Fig. 2 represents an interior view of the said look, also shown in a locked position. Fig. 3 represents a similar interior View showing the look open. Fig. 4 represents a vertical section on the line at 4, shown in Fig. 2. Fig. 5 represents a longitudinal sectionon the line 5 a, shown in Fig. 2. Fig. 6 represents a detail perspective view of the slitted guide-tube,

in which the boltis guided. Fig. 7 represents a detail side view of the locking-bolt, and Fig. 8 represents end views of the letter-disks.

Similar letters refer to similar parts wherever they occur on the different parts of the drawings.

A A represent the front and rear portions of the inclosing shell or case, to which is secured the bottom piece A" and A and top A as is common in padlocks.

B is the bow, as usual, pivoted at b, and having a hook or looking recess I)" in its free end, as shown.

C is a movable end piece that constitutes a portion of the inclosing case, said end' piece being pivoted on a pin 0, secured to the plates A A, and normally held in the position shown in Figs. 2 and 5 by the influence of the spring D, interposed between the lower portion of the end piece 0 and a stationary block E, secured to the plate A, and to said block is secured a longitudinally-slitted sleeve F, having on one of its sides a slitf, as fully shown in Fig. 6. Within said sleeve and a perforation in the block E is longitudinally adjustable the bolt G, provided with a series of side projections g g g, as shown in Fig. 7. On the sleeve F is journaled a series of annular disks H H H, having a portion of their peripheries projecting through openings at and 0. in the platesA A, as shown. Each of such disks H has on its interior a longitudinal groove h, adapted to receive the corresponding projection g on the longitudinallymovable locking-bolt G, as shown in Figs. 4,

5, and 8; The disks H H H have numbers or letters or other marks on their peripheries, as shown in Figs. 1, 2, and 3, as is common in letter or puzzle locks. When the disks H are all turned to such a position that their longitudinal grooves h are in alignment with the projection g on the bolt G, then the latter may be moved freely toward the left by pressing inward on the lower portion of the movable end piece 0, as shown in Fig. 3, and in so doing the left-hand end of the said boltG comes in contact with a pivoted lever I, that is pivoted at i and provided with a hooked upper end 1, as shown in Figs. 2 and 3. Normally the hooked end I of said lever I is held in looking engagement with the notched end B of the bow B by the influence of a spring K, as shown in Fig. 2. Vhen the hooked lover I is released from the bow B and swung to the position shown in Fig. 3 by pressure on the end piece 0 after the disks H H H have been adjusted, the released bow B is automatically swung upward by the influence of a spring L to the position shown in Fig. 3. As soon as the operator relieves the pressure on the end piece 0 the latter is moved by the spring D to its normal position, (shown in Figs. 2 and 5,) and thelever I and bolt G are moved to their normal positions (shown in said Figs. 2 and 5) by the influence of the spring K, after which the bow B may be locked simply by swinging it to the position shown in Figs. 1 and 2, causing the notch B on said how to be interlocked with the spring-pressed hooked lever I, as shown in Fig. 2. The disks H H H are then turned around sufficiently to cause their grooves h to be placed out of alignment with the bolt projections g. The disks H may be marked with numbers or letters, 850., on their circumferences to serve as means for locating them in position for unlocking the bolt, as is common in looks of this kind. In practice I prefer to provide the case-plates A A with the respective hinged covers M M for internal grooves hand a spring pressed hook lever I adapted to engage with the free end of the bow, substantially as and for the purpose set forth.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, on this 17th day of 20 July, A. D. 1895.




Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4354367 *May 2, 1979Oct 19, 1982Philippe WahlCombination lock for attache cases and similar articles
US5765409 *Dec 6, 1996Jun 16, 1998Yang; Kuo-TsungPadlock having a large lock opening
US5791169 *Aug 27, 1997Aug 11, 1998Kuo; LambertU-shape lock
US5924313 *Sep 9, 1998Jul 20, 1999Kuo; LambertCombination lock with a device for changing the combination
Cooperative ClassificationE05B37/10, Y10S70/26