US942553A - Permutation-lock. - Google Patents

Description

G. H. HAMILTON.

l PERMUTATIONLOCK.

APPLIOATION FILED HAY 25, 1909.

Patented Dec. 7,1909;V

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GEORGE H. HAMILTON, F PORTLAND, OREGON.

Specication of Letters Patent.

Patented Dee. 7,

Application led Hayi', 1909. Serial No. 498,232.

To all whom fit may concern:

Be it knownthat LGEORGE HAMILTON, a citizen of the United States, and a resident of Portland', in the county of Multnomah Aand State of Oregon, have invented a nevsT and Improved Permutation-Lock, of which the following is 'a full, clear, and exact de'- scription.

The invention is an improvement in permutation locks such as are provided in connection with latching spindles of ordinary locks', andi has in vienr aconstruction embodying a latch spindle, the spindle having i the customary knob and revoluble vindependently of` the latch operating mechanism, the spindle `being provided .With a push bar' tolock it to said mechanism, and also having a spring 'paivl to lock the pusl1bar in its innermost and retracted positions, controlledE by a .permutation mechanism -mounted on the spindle at the outside of and adjacent to the outer door knob.

i Reference is' to be had to the accompany- 'ing drawings forming a part of this specifi.

cation, in which similar characters' of reference indicate .corresponding parts in all the views. Y

Figure 1 is a central vertical section through a lock embodying my invention; Fig. 2 isa cross-section of the same on the line 2-2 of Fig.4 1'; Fig. 3 is an inner tace view of one of the fixed index rings of the permutation mechanism; Fig. 4 is a similar vieWin section, of one of the operating rings of the permutation' mechanism; Fig. 5 vis a similar view ofone of the tumbler rings of said mechanism; and Fig. 6 is a similar View of the innermost tumbler ring.-

InV the embodiment of my invention shown, the door or other closure 10 is provided With 'a lock 11 of conventional. form, except that it .is provided With a divided latch spindle comprising an inner section 12 and an outer 4section 13, the sections having the customary door knobs 14 and" 15 respectively. The inner end portion of the section 1 2 of the spindle has an expanded head 16 which prevents the withdrawal of this portion ot' the spindle from the lock, the said head having a socket 16a arranged in alinementwith and adapted to be engaged by a Lush-bar 14' slidable in the spindle sec- 4tion 13.- 'The spindle section 13 has a. nut or other enlargement. 18 secured to its in- V ner end, and is longitudinally slotted to re-I ceive the push-bar 17, as shown in Figs. 1

-and 2, the push-bar extending into a coun?! terboredy recess formed in the knob, where it is provided with a push-button`19 and normally forced to a retracted positionby a spring 20, the latter being located about the bar within the-recess and bearing o'n the i pushbutton and the inner Wall of the knob, ".lhe push-bar is provided with a 4number` of teethl 21 on its upper face, the'outer'tooth of which contacts with the inner face of the knob when the push-barns fully re#l tracted.

YVithin the longitudinal slot of the spinlj die section 13, is pivoted at the inner end a pa'wl 22 having teeth 23 opposed to the teeth 21 and adapted to mesh therewith when the vpush-bar is in its retracted and projected positions. The pawl 22 is normally forced from the push-bar to disengage the teeth, by a spring 24 arranged near' its pivot andy bearing on 'the upper face of the ush-bar. The spindle section 13 is journa ed in a knob-plate 25, which is provided `with' an outwardly-projecting boss, the same being separated a substantial distance from a siml-4 lar inwardly-projecting portion on the knob, and in this space, on the spindle section 13, I provide a permutation mechanism for controlling the position of the pawl 22.

The permutation mechanism consists in general of tumbler rings 26 and 26, shown in detail in Figs. 5 and 6, respectively, index rings 27, alternating With the tumbler rings, and operating rings 28, as shown in detail' in Figs 2 and i, arranged at the outside' and covering the tumbler rings. Each tumbler ring 26 has an rinner notch 29, into Which the' back of the pawl 22 is adapted to pass, and is freely revoluble on the spindle section 13. The notch 292l in the innermost 'tumbler ring 26a is beveled at one side to register with a correspondingly-beveled portion 29b at'the edge .of the paWl 22. The intermediate index rings have gibs 30 keying them lto the spindle section 13, and notches 31 in register with the slot of this section of the spindle and designed to receive the back or outer portion of the paWl 22. The inner projecting portion of the knob llforms one of these rings, which, as also those index rings separate from the spindle, have a num-4 elongated depression 33. The 'operating rings 2S are counterbored at opposite sides to tit over the index rings 27. The inner or side face ot the counterb'ored portion at. one sideI of the rings is recessed to receive a spring S4, one end of the spring being suitably fixed, and the other end carrying a pin 35 which passes through an aperture to the opposite side of the ring and normally projects suiiiciently, as shown in Fig. l, to engage the recesses and 33 of the adjacent index` ring. The recess containing the spring 3.4, is sutiiciently deep to permit of the ,pin moving4 inwardly out ol engagement with the recesses and 33' when theoperating ring QS is revolved. The tumbler rings 26 are sufficiently tight in the operating` rings Q8 to move therewith when the rings 28 are revolved, but the rings 2S may be turned on the tumbler rings when the latter areheld against rotation. As the operating rings 28 are revoived, the pins successively snap into the recesses of the index and it can be easily detected when the pins pass into the elongated slots 33, which are shown to be located in radial'alinen'ient With -the notches 31, which, as before stated, are in register with the longitudinal slot of the spindle section 13.A lVhen the operating rings have been moved to break the combination, the tumbler rings press the pawl 22 inwardly against the tension ot its spring and engage the teeth of the pawl with the teeth. of the push-bar. The tumbler rings are brought to a position to release the paivl from the push-bar by -any one knowing the combination, by first moving the operating rings until the pins engage the elongated recesses ot the fixed index rings, then counting the number ot recesses 'from this point as each. operating ring is turned in the proper direction. These recesses may be counted by noting the number of' vibrations made by each pin yin its successive engage ments. Vhen `the last tumbler ring ot the combination is set, the pawl 2Q moves outwardly, under the iiiiuenee of the spring, into the notches otl the tumbler and index `rings, at which time the push-button of the4 push-bar may be forced inwardly to engage the push-bar with the socket ot the spindle section l2, and the knob l5 used to operate the latch spindle of the lock. The pawl 22 may be forced inwardly to lock the push-bar iii either its projected or retracted positions by giving the operating ring 28, carrying the tumbler ring 26a, a partial turn, the inclined edge of the notch 29a and the beveled portion ot the tumbler ring and pawl respectively, adi'iiitting of this operation.

To change the combination, the combina.- tion is set to perinit'ot the disei'igageiiient ot thefpawl and the puslid'iar, asshowii in Fig.

1jivhereupon the operating rings areforced around on "the tumbler rings as inany notches or recesses as desired, the operator noting the change made for each 'operating thinible or sleeve ot' the lock havingthe i socket remaining, or the said sleeve made ol' a size to directly receive the puslrbar, in which case the sleeve would constitute the inner section of the spindle.

HavingA thus described my invention, I claim as new and desire to secure by Letters Patent:

l. .ln a lock, a latch spindle transversely divided into two separa-te sect-ions, each secV tion independently revoluble, with one of the sections having a push-bar to lock the tivo sections ot' the spindle together, slidable therein, a spring-pressed pawl to lock the push-bar in its'retracted and projected positions, 'and aperinutation mechanism to control the pa'wl, carried onthat section ot the spindle having the push-bar.

2. In a lock, a latch spindle transversely divided into two separate sections, a pushbar to lockthe two sections otl the spindle together, slidable in one of said sections, and means to lock the push-bar in its projected and retracted positions, including a permutation niechaiiism having index rings and operatii'ig rings, the said index rings vand operating rings alternating with each other, r.with the index rings ixed to the spindle section having lthe push-bar and each provided with a number of recesses on its inner face, one ot' which is elongated, and the operating rings revoluble on the spindle and each having a spring-pressed pin adapted to successively engage the recesses of the adjal cent index ring.

3. In a lock, a latch spindle having separate sections, one of said sections longitudinally slotted and provided with a knob having a. counterbored recess, a push-'bar' to lock the 'tivo sectionsof the spindle to! gether, slidable in said slot and extended into the counterbored portion of the knob, a push-button in said counterbored portion of the knob and attached to the push-bar, a spring bearing on the push-button and knob, forcing vthe. push-bar outwardly, and means to lock the push-bar against inward movement, including a permutation mechanism revoluble on the slotted section of the V tions and having a push-button arranged in" -said necess, and means vtolock the push-bar in-ltsiretracted position, including a permutation mechamsnr carriedon the spindle at [theoutsideo fvnndadjaeent tothe'knob, f f5. In a'locl,' ja Ilatch'spi'ndle constructed of,

- an `innenantil outer. section, .the outer section 1tfa'ving ail'ongitndinalfslot, a pushbar to lock-the two sectionsof the spindle together,

slidablyv monnted -insaidslot, means .nor-

malljyforcing the push-bar ina direction to' disengage from the lopposite spindle, a 'papel-'to lock the push-barvinl its retracted position',- pivotallyy supported in said slot,

and a permutation' mechanism to control the 'pawh carried, on the slotted spindle section and 'having index and operating rings alternating with each other, Withthe index rings secured to the spindle.

56.- In n lock, a latch spindle in separa-te sections, one of the sections having a longitudinalslot, a push-bar' to lock thevtwo sections of the spindle together, slidable -in the saidslot, apavvl to vlock-'the vpush-bar in .a retracted position, pivotally supported With-- in the slot, and permutation mechanism to control the pawl, carried on the slotted spin? dle sect-ion. A

7. In a lock', a latch spindle-transversely ldivided into an inner nndouter section, 'the outer section having a. longitudinal slot and provided with a recessed knob, a push-bar tolckthe tivo'sections of the spindle to- -get'henfslidable in snidsl-otandjhaving a `4push-button located in'the' recessfo' theA l-niob, a spring `arranged i-n- 4the recess of the Iknob and bez \'r 1n'g on the button, normally forcing the.push'bar to its 'outermost `posi.

Y ition, a springtpaivl to* look the push-bar in retracted and projected positions, 'pivoted in saifdis'lonn series of. index rings fxedto the slotted spindlefsection-andhaving internal notches registering with the said slot, adapt! Y '.,eelgltoreccive' the outer portion'otl the pand, p

' "a'serii of revoluble tumbler rings alternat' .l5fV

ing fwit-h'fthe index rings and having'- .cor-

-reoondng'internal notches, operating rings s u 1r unding the-tn mblerrlngs and friction'i,

i'nding .thereon-fand spring-'pressed yadopted to successively engage with a number of recesses formed in the inner ace of .the -ad3acent`1ndex ruig.

to control the operation ot' the spindle, having a series of operating rings and index rings, the said rings alternating with each other, with Ythe index rings fixed to the spindleand having a number of 'recesses on one face, one of whichis elongatechand the operating rings each provided with a springpressed pin adapted to successively engage in the lsaid recesses.

9. In a lock., a latch spindle of separate sections, a push-bar to secure the two sections of the spindle together, slidable in one sect-ion'of the spindle, a'pawl to lock the pusl'i-bar in its retractedv posit-ion, having a beveled shoulder, aseries of index rings fixed to the spindle section about the pnwl, havingnotc'hes in which the outer portion of the pawl -is adapted to iass, tumbler rings revoluble on the spindle and alternat- 'ing with the index rings, having corresponding notches,f\vith' the notch in one of the tumbler rings having a beveled edge 'to conform with the beveled shoulder of the panfl, and operating rings 'carried on and engaged withv the tumbler rings.

l0. Ina. lock, a latch spindle divided int-o an inner and outer section, av 'knob plate in which the outer section of the hitch spindle is mounted, a knob in vconnection :with the 'GEORGE H. HAMILTON. i Witnesses:

L QI. 'Fixif DoUuLA'ss,

ipje'd-f byvv 'the operating rings, each-l outer spindle section, spaced'from the knob y S.' The combination vof n lock haring. nlatch spindle and a' permutation mechanism

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