US894520A - Permutation-lock. - Google Patents

Description

11019452 0.; v PATENTED JULY 28, 1908.- M. B.MILLS.. I PBRMUTATION LOOK.

{union-101w rum) 9013.26.1907.

2 SHBETS- BHEET 1,

aye/M TE T TENTOFFICEI Mtnrnms B. MILLS, or o'HIcAeo, ILL NoIs, ASSIGNOR ToMILLs KEYIQEss LOCK & NOVELTY MFG. 00., or CHICAGO, 1LLINOIS, A coRPoRATIo'NoE ILLINOIS.

. PERM UTATION -LOCK.

Specification of LetteIsPatentQ I Patented July 28, 1908.

Application filed October 26, 1907. Serial No. 899,269.

To all whom it may concern:

Be it known that I, MORTIMER B. MILLS, a

citizen ofthe United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful'lmprovement in Permutation-Locks, of vwhich the following is "a s ecification. i

My invention re ates to an improvement in permutation-locks; and my object is to providea novel and sim le construction ofpermutation-lock, to amptit, more partIcularly, for desks and drawers, for adlocks, and'the like, and which shall enable the. parts to be readily assembled by unskilled abor in the manufacture of the look.

In the accom any'ing drawings, Figure 1 is a partly sectional inner-face view of In improved lock as adapted to be applied'to a drawer, and showing it in lockedcondition;

I elusive, 1 mechanism, and it is.a apted to be fastened use on a roll-to 'g. 2, a similar View of the same, showing it in unlocked condition, andFig. 3, an enlarged section taken at the line 3 on .Fig. 1 and viewed in the direction of. the arrow. Fig. '4 is a erspective view of one of two similar tum lers employed in the construction; Fig. 5, a perspective view of the permuting sto '-disk which engages with the tumbler of ig. 4 Fig. 6, a similar view showing the other of the two tumblers in mesh with ainion on the lock-operating starwheel; 7, a similar view of anannulardisk detail, and Fig. 8, a similar viewof a cap detail adapted 'to cooperate with the, tumbler ofFig. 6 for changing the combination and with the disk of Fig. 7-. Figs. 9 and 10 are views like those presented, respectively, in Figs. 1 and 2, but showing a modified construction: of the lock adapting it for desk, or the like; and Fi s. 11 and 12 are views in vertical sectional e evation of adlocks equipped with my improvement in a form adapted for that, species of. lock and respectively locked and unlocked condition.

Referring particularly to Figs. 1 to 8, in- 3 is the sup orting-plate for the against the recessed face of a drawer, or the ii I I e (not shown), being provided with a flange 14 which projects at a right-angle from its upper edge to extend over the corresponding e go of the drawer-face, and through which 1t ma as usual, be screwed down upon such e ge. In this flange is rovided a slot 15 to register with a similar s 0t 16 in face of the late is scribed;

showing it in 7 on the wheel or be a multiple thereof.

a bolt-plate 17 fastened in proper osition on r the frame 18 above the drawer, .w iich frame contains the usual recess 19 registering'with the slot 16 to receive thelocking-bolt. In' the construction illustrated, this bolt, represented at 20, is in the formof a disk having a portion cut away to form the straight edge 21, the disk being also cut away to fornian offset 22 extending at a'right-angle to the edge 21, and adjacent to which a notch 23 is formed, the disk being centrally secured ona pin 24' journaled the upper part of the late. and carrying on its outer end a milled head 25 by which to turn it, On the inner Ipivotedga pawl 26 adapted ,to engage t e note 23 when in registry with its free end, the tendency to such engagement being roduced by a spring 27 connected. with the pawl; and from the free end of the pawl there extends a finger 28 for the purpose hereinafter explained.

The particular mechanism thus far described is not, as to its details, essential to my invention, which is embodied in the mechanism described as follows:

In the lower edge-of the plate 13 is formed a socket 29, ransversely through which extends a statinnalyfpin 30 having journaled .upon it the primary finger-operated actuating device of the lock shown in the preferred form of a star-wheel 31 provided centrally on its inner face'with a pinion 32. 'The,star-' wheelshown is provided with five points at. equalintervals apart with the periphery concaved between them, and it is. so positioned in the recess as tdcause the'points to protrude beyond its lower edge, when they successively register therewith, to rende them conveniently accessible for manipulating the look, as and for'the purpose hereinafter 0.;

The wheel 31 with'itsprojecting points .and thepinion 32-form essential elements of my improved lock, and it is important that the number of 'teeth on the pinion shall ,either correspond with the number of points .shaft 33, carryingon its outer end a milled head 34, is journaled in a bearing 33extending from the face of the plate in vertical alineinent with the pin 24 and carries loosely upon it atumbler 35 in the form'of a disk having I peripheral teeth '36,

number and thus a multiple ofthe teeth on the pinion 32, which meshes with the tumshown to be'thirty in I bler, thou h the number of the teeth '36 is immateria A radial slot 37 is provided in this tumbler, and it also has formed in it about its center a desired number of holes 38 for setting the combination as hereinafter described. The shaft 33 contains a longitudinal groove '39 and is surrounded adjacent to the tumbler by an annular disk 40 having an inwardly-projecting tongue or key 41 to enter said groove for rotating the diskwith the shaft, and atongue 42 projectin from its periphery. Anannular cap 43 Toosely surrounds the shaft 33 to,cover the disk 40 and has a lug 44 extending from it into the path of the tongue 42 and 'a stud 45 adapted to register with the circulaiseries of holes 38 in the tumbler 35. A washer 46 extends from the pin 30 and loosely surrounds the shaft 33 to-cover the inner face of the cap 44.

Anothertumbler 47 loosely surrounds the shaft adjacent to the washer and is shown to be of precisely the same construction as the tumbler 35, being rovided with teeth 36, a radial slot 37 an a circular series of holes 38. It is not necessary, however, that the tumbler 47 be toothed. An annular sto disk 48 fits about the shaft 33 adjacent to t e tumbler 47, with which it is caused'to rotate through the medium of a tongue or key 49 projecting into the groove 39; and thisdisk is provided on' one edge with a stud 50 to register with the circular series of holes 38, and with a radially-extending stop-finger 51, shown to be slightly curved, diametrically opposite the stud 50. The elements supported on the shaft 33 are resiliently confined one against the other by a coiled-sprin 52 about the inner end of the shaft and con ed against the-.face of the stop-disk 48, as by a -cotter-pin 53.

the star-wheel 31 is manipulated in a manner depending upon the particular combination for which the lock is set. The operation of unlocking is started with the stop-finger 51 abutting against one side or the other of the pin 30, which may be considered the zero position. The star-wheel is turned by applying a finger, as the forefinger, to the proecting point of the wheeland wiping the. finger downalong, the adjacent edge of the plate until another point protrudes beyond the latter foryanother, similar manipulation by the finger, these manipulations being repeated the number of times required for the predetermined combination known to the operator. Thus'turning the star-wheel in one direction rotates'in that direction both tumblers, sinee the tumbler 35 is rotated by the pinion 32 and rotates with it the ca 43 by engagement with a hole 38 of. the stu 45, and in the rotation of the cap the lug 44 thereon abutting a ainst the tongue 42 on the disk 40 turns t e latter and causes the tongue 41, which is in the shaft-groove 39, to turn the shaft, and also turn the tumbler 47 by reason of the engagement with a hole 38 therein of the stud 50 on the stop-disk 48,. the ton ue 49 on which is in the shaft-recess 39/ Wien the star-wheel has been turned 1 in the one direction the predetermined numberof times to bring the slot 37 in the tumbler 47 into registration with the pawl-finger 28, to then bring the slot 37 in the tumbler 35 into the same registration the star-wheel is turned the predetermined number of times in the other direction by successively manipulating the rojecting points. In turning the star-whee as last described, the tumbler 47 remains stationary, since in the rotation -of the tumbler 35 in that direction the lug 44 on the cap turns away from the tongue 42 on the disk 40, thus without causing the latter to rotate the shaft and conse uently without causing it'torotate the tum ler 47. With the slots of both tumblers thus brought into registration with each other and with the owl-finger 28, the pin 24 may be turned to withdrawthe bolt 20 in the manner described.

To change the combination it is but necessary to separate the stop-disk 48 from the tumbler 47, or the cap 43 from the tumbler 35, or both, in the one instance withdrawing the stud 50 from one hole 38 and introduc- -ing it into another by slightly turning the stop-disk, and in the other instance withdrawing the stud 45 from a hole 38 and intro ducing it into another hole in the tumbler 35 by slightly turning the cap. Such separation may easily be effected by introducing a suitable sharp instrument, such as a blade of a-pen-knife, underneath either the stop-disk 48 or the cap 43, or under both in succession to prize them against the resis ance of the spring 52.

The construction of the star-wheel, pinion and partson he shaft 33, and also of the pawl 26 as snown in Figs. 9 to 12, inclusive, and their operation, are the same as described with reference to Figs. 1 to 8, inclusive. In Figs. 9 and 10, the rotary pin 24 carries on its inner end a cam 54 containing a notch 55 to receive the pawl 26 in the posi tion of the cam represented in Fig. 10, andprovided with a projection 56 to engage the pawl in the osition of the cam represented 1n Fig. 9. his cam extends between two similar spring-pressed latch-bolts 57, 57, the tendency of their spring-pressure being to force them toward each other ut.their free ends carrying lateral tongues 58, 58, to enter a recesst'19 through slots 15, 1'6,and disen them from'the. plate 17 as re resented.

in ig, 9, as-fofunlooking the rol -top of av desk; When the-,tumbler-slots and pawl-,-

- fingerar'e'brought into registration, the-pin 24 may be rotated to turn the cam 54 to the.

1 position representedin Fig. ,10, wherein it --receives the pawl into the notch, 55 and spreads the latchbolts 57'apartagainst the 1 resistance of their spring-pressure to. engage' the, tongues 58' on theirfree ends with the plate 17 andthus lock the desk.

For the padlock, the-free end of the shackle 59 isadapted-to beengaged, for looking it,

by a catch60, against w ich is confined a sprin 60 -tending-to disengage it when re-' lease fromthe locking action of a cam 61v on the rotatable pin 24, containing a notch 62 to 'receive the spring-controlled pawl 26, the.

finger 28 of' which, when it registers'with the tumbler-slots, will be'introduced into them by turning the pin 24 to rotate the camto the position represented in Fig. 12, wherein it turns the pawl to enter its finger into said.

slots and free the catch60 under the action of its spring tounlock the. shackle.

In the .pa'dlock the case .63, is substituted for the pla-te'of the preceding figures to afi'ord. a suyport for the lockmechanism. Y 7 bviously, the number of the tumbler employed, with the "cooperating means for changing thecombina'tion ofea ch, may exceed two, and it 1s withinfmy invention to employonly the' 'tumbler 35 though withconseqluent reduction. to theminimum of the e number of changes of'combinations. As Wlll be observed, With'the fiveointed star-wheel and pinion. rovided wit twice the number'of teeth, w 'ch isthe construction shown, a complete turningout ofthe way of'a point, by wiping it with the finger in. the manner describedto bring the next succeeding point to project centrally of the. socket 29- causes the, pinion to turn to the extent of two teeth. However, the starwheel may be so operatedas always .to cause two adjacent points upon it to pro.-

trude equally beyond the edge of the socket 29 at opposite sides of the perpendicular center thereof, thereby enabling the operat-' jug-finger to manipulate each point in .suc-f cession and thus double the number of.

manipulations in turning the star-wheel in" each direction. v

What I claim as new and desire to secure by Letters Patent isber of points, 'journaled on the supportto protrude, by its rotation,-said points in suc-' cession beyond an edge of the support, .a

1. In a permutation-lock, the combination with asupport for the mechanism, of a bolt,

a star-wheel having a predetermined num-.

pinion connected with the star-wheel, the

number of teeth on which bears a predeterfor the purpose set forth.

mined relation tothe numberoi said points, a pair of tumblers with'interengagmg means forturning one by the other,.each tumbler.

consisting ofa toothed Wheel containing a slot and journaledon the support to mesh 'one of said tumblers with the pinion, and relea'sablelockin -means for said bolt cooperating'withsai slotted tumblers, for the purpose set forth.-

2. In a permutationlock, the combination with a support for the mechanism, of a bolt, a star-wheel; having a predetermined number of points, journaled on the support to protrude, by its rotation, said points in sno cessio'n beyond an edge. of the support,- a pinion connected with the star-wheel, the number of teeth on whichbears a predeter mined relation to the number of said points, a pairof tumblers with interengaging means" for turning dneby, the other, eachtumbler consisting of a toothed wheel containing a one of said tumblers with the pinion, permuting mechanism on said tumblers and releasable lockin means on said bolt cooperating Withsai slotted tumblers, for the purpose set forth. 7

3. In a permutation-lock, the combination a. star-wheel journaled on the support to protrude, by-its rotation, the pomtsthereon 1n succession beyond an edge of the support, a

pinion'connected with thestar-wheel, a shaft ournaledon'the support, a tumbler cons sting-of a toothed. wheel on the 'shaft meshmg with the pinion and containing a slot and rdvided with holes, an annular disk keye' to the shaft and provided with a ton ue,'-a cap surrounding the shaftto cover sai disk and rovided wlth a studjto engage'oneof sald holes and with alug. to. engage w th said tongue, and releasable lockin -meansfor said bolt cooperating with said s ottedtumbler,

' 4'. In a permutation-lock, the'combination witha'support for the mechanism,'-of-a bolt,

'a star-wheel having a predetermined number of. points, journaledon the support to protrude, by its. rotation, said points in succession beyond an edge of the su port, a pinion connected with the star-whee with its teeth forming a multiple of the number of star? wheel points, a air oftumblers with interengaging means or turningone by the other, 'eachtumbler consisting of a toothed wheel slot and journaled on the support to mesh containing a slot and journaled' onthe su port to mesh one of said tumblers with t of" I pinion, and a spring-pawl cooperating with said slottedtumblersandbolt, for, the purpose set forth. v

5 In a'p'ermutation-lock, the combination .with a support for'the mechanism,of a bolt,

a star-wheel journaled on the support to pretrude, by its rotation, the points thereon succession beyond an edgeof'the support, a,

pinion on the star-wheel,' a shaft journaled on the support, a tumbler consistin of a toothed wheel on the shaft meshing wit the pinion and containing a slot and provided with holes, an annular disk keyed to the shaft and provided with a tongue, a cap surrounding the shaftto cover said disk and provided with a stud to engage one of said holes and with a lug to engage said "tongue, a second tumbler consisting of a slottedwheel on said shaft, provided with holes, a stop-diskkeyed to the shaft and rovided with a'stud to engage a hole in said second tumbler and with a stopfinger, and a spring-pawl cooperating with said slotted tumblers and bolt, for the pur-' pose set forth.

6. .In a permutation-lock, the combination with a support for the mechanism, of a starwheelv j ournaled on the sup ort to protrude, by its rotation, the points t ereon H1 succession beyond an edge of the support, a pinion on the star-wheel, a shaft journaled on the support, a tumbler, consisting of a toothed wheel on the shaft meshing with the inion and containing a slot and provided with oles, an annular disk keyed to the shaft and provided with a tongue, a cap surrounding the shaft and rovided with a stud to engage one of said he es and with a lug to engage said tongue, a second tumbler consistin of a slotted wheel on said shaft, provide with holes, a stop-disk keyed to the shaft and pro-' vided with a stud 'to en age a hole in said second tumbler and wit s ring-pawl terminating in a finger to enter the tumbler-slots, a cam journale'd on the support to enga e said pawl, and'a spring ressed bolt wit which said cam engages, or the purposeset forth.

MORTIMER B. MILLS.

a stop-finger, a

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