US539818A

US539818A - Permutation-lock

Info

Publication number: US539818A
Authority: US
Publication date: 1895-05-28
Anticipated expiration: 1912-05-28

Description

(No Model.) 3 Sheets-Sheet 2. R. MOE. PERMUTATION LOCK.

No. 539,818. Patented May 28, 1895.

{No Model.)4 i 3 sheets-sheet 3.

R. MOE.

PERMUTATION LOCK.

No. 539,818. Patented May 28, 1895.

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UNITED STATES;

PATENT Tirion.

RUDOLF MOE, OF CHICAGO, ILLINOIS.

PERMUTAT|oNLooK- SPECIFICATION forming part of Letters Patent No. 539,818, dated 1`4Iay28, 1895.

Application filed May 23, 1894. Serial No. 512,205. (No model.) l

To a/ZZ whom, t may concern:

Be it known that I, RUDOLF MOE, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement iu Permutation-Locks, of which the following is a specification.

Myobject is to provide a combination lock of im proved construction the moving parts of which are actuated through the medium of a push-button to which access may be had by the operator.

In the drawings, Figure l is a perspective view of my improved lock fastened upon the inner side of a door, the door being shown in broken perspective; Fig. 2, aperspective view of a catch or keeper for my improved lock fastened upon a door-jamb; Fig. 3, a broken perspective view of a door, showing the pushbutton mechanism for operating the lock, which latter is shown on the opposite side of the door; Fig. 4, a view in elevation of the inner side of the lock-casing with the back plate, which carries the moving parts, removed; Fig. 5, an enlarged section taken on line 5 of Fig. 4 and showing the push-buttonoperating mechanism for the lock; Figs. 6 and 7, detail perspective views of parts of the said push-button mechanism; Fig. 8, a View in elevation of the moving parts in the back plate of the look, the view being taken from the inner side or side next the door in Fig. l; Fig. 9, a view partly in section and partly in elevation, the section being taken in the vertical plane longitudinally of the lock; Fig. lO, a view substantially the same as Fig. 8, but with details removed to expose parts which are hidden in Fig. 8; Fig. 1l, a broken section taken on line 11 of Fig. l0 and viewed in the direction of the arrow; Fig. l2, a View' the same as Fig. 1l, but showing the moving parts in another position; Fig. 13, a broken section online 18 of Fig. 1l; Fig. 14ga section on line 14 of Fig. 9; Fig. 15, a broken section on line 15 of Fig. 8; Fig. 16, a broken section on line 16 of Fig. 14; Fig. 17, a vertical longitudinal section through the lock, certain parts being indicated by dotted lines; and Fig. 18, abroken perspective view of a disk.

A is the casing of the lock and is made preferably in two parts A' and-A2. The part A consists of the front-plate t, the top-plate or flange t', the bottom-plate or Harige t2 and end t3,- and the part A2 consists of the back-plate t4 and face-plate t5. The front plate t is provided with openings for screws by means of which the part A may be fastened to the surface of a door; an'd on the front-plate tare lugs s, provided in their ends with screwsockets s', the lugs extending to the plane of the edges of the flangesor sides t t2 t3. The part A2 its over the part A',` resting at the inner edge-portion of the part'z4 against the sides t t2 t3, and extending `at its face-portion t5 across. the front end of the part A. In the baclrplate t4, are screw-openings s, which, when the part A2 is in place, register with the screw-sockets s in the lugs s, and screws are passed through the openings s2 into the screw-sockets s' to fasten the parts of the casing securely together. The casing thus completely houses the moving parts of the lock.

B is the bolt which works through the boltopening in the face-plate 5. Integral, orsuhstantially integral, with the bolt B is a sliding bolt-frame or plate B', of the form shown most plainly in Fig. 9,which moves upon the surface of the back-plate t", and is provided with an upward projecting arm r at the top, a forward projecting finger r' toward its lowerI rear portion, and a backward extending pin r2 at its lower rear end, which extend and work through an opening in a block t6 on the back-plate. Surrounding the pin-portion fr?, and confined between the block 156 and rear end of the plate B', is a spring r3, the tendency of which is to press the plate B in the direction of the face-plate t5 and advance or shoot the bolt B. Extending through the back-plate 154, and journaled thereinis a short shaft q, formed onthe outer side of the casing with a head q', provided with a crank piu or handle q2. Inside the casing adjacent to the surface of the back-plate the shaft q carries a cam-finger g3 which works against the edge surface ot' the armfr on the plate B. By turning the shaft q, the cam g3 may be turned against the arm r, and force it with the plate B and bolt B in the backward direct-.ion against the resistance of thespring lr3,to retract the bolt B. Formed upon the back-plate t4 is a lug t7 which limits the movemeut of the plate B in the backward direction; and the movement of .the plate in the IOO of the socket-lugs.

forward direction is limited by its contact with the inner surface of the face-plate t5.

On the back-plate Z4, and formed integral therewith, are socket-lugs p p' p2. Each socket-lug has a base-portion presenting an annular face p3, and an annular projectingportion p4 affording a shaft. Loose upon the shafts p4 of the socket-lugs are disks C D and E', respectively, having serrated circumferential edges. On the face of each disk C D and E is a flat sided ringn presenting asegmental opening through it n', and a notch or socket n2 in its edge. The ringin each instance surrounds the shaft p4, and is adjnstably fastened against the disk by a set-screw n3. The disksY and their accompanying rings 'n are confined upon the shafts p4 by means of screws p5 which engage the threaded sockets At the edge of each socket-lug is a stop p6, and on each disk is a pin m. The stops p6 are in the paths of the pins m of the respective disks, and fastened at one end to the pins m of the disks, vand at their opposite ends to the socket-pieces are helical springs m', which tend to turn the disks on the shafts p4 until their pins m engage the stops p6. W'hen the pins of the disks thus engage the stopsp, the disks are in their normal positions. f

Fis aVertically-sliding frame or plate which overrides the plate B and has flanged edgeportions Z, which slide upon the surface of the back-plate t4. The plate F is held in place by means of screws Z which pass through vertically elongated openings in the said plate into short, threaded socket-lugs Zzon the back-plate. The plate F may slide up and down a distance limited by the length of the slots through which the screws pass, as described, and it carries pivotal dogs Z3, which when the plate is lowered engage the teeth of the disks C D I and E. The downward play of the dogs is limited by stops Z4 on the plate F, and when the plate F is raised, as indicated in Fig. 17, the dogs are disengaged from the said disks.

The lower flange-portion Zof the plate F is.

cut away to form a cam-edge Z5 in the position indicated.

Gis a tumbler or tu mbler-plate most plainly illustrated in Fig. 8, and provided with notchengaging stumps 7c 10'702, respectively; a backward-extending part k3 with a cam-edge at its under side, and a straight surface or lower step h4 at its upper edge; a stop ]c5 and an upper step lr6 in the positions shown; and a laterally-extending flange-portion 707 which extends at right-angles to the surface of the plate, and presents an outer straight surface les, a stop or shoulderlcg, and au inner straight surface klo. See, for example, Figs. 'll and 12. At its forward end the tumbler-plate is pivotally connected by means of ascrewt11 with the bolt B. WVhen the notches in the rings n of the disks are out of register with the stumps 7c 7e k2, and the bolt is shot, the tumbler-plate rests at its stumps upon the rings n; while when the notches n2 register with the plunger.

stumps the tumbler-plate drops at its stumps into the said notches. On the back-plate Z4 in the position shown is a stud t8, which, when the bolt is shot, and the tumbler-plate is in its forward position, is just beyond the end of the cam k3. In the movement of the bolt and tumbler-plate in the backward direction the lower edge of the cam k3 slides upon the stud t8. On the back-plate t4 is a lug t9, and extending through the lug and back-plate, is a bearingopeningtlo. Journaled in the bearing-opening 10 is a pin or shaft t provided on the outer side of the back-plate with a thumb-piece or handle i', and at its inner end with an arm or catch-piece i2 formed with a shoulder t3. At the rear end of the catch-piece Z2 is a projection t4, and on the lug t9 is a piu or stop t in the path of the projection t4, which limits the downward swinging of the catch-piece Z2. When the bolt is retracted the catch-piece Z2 rests upon the step or surface 7.56 of the tumblerplate, and when the bolt is shot the catch Z2 rests upon the step 7a4, and, unless swung out of the way by turning of the thumb-piece t', its shoulder t3 will extend in the path of the shoulder ks and prevent the retracting of the bolt. On the yhack-plate t4 in the relative positions shown, for example in Figs. 9 and 13, is a lug Zz, provided with a longitudinally extending opening h through it, and an elongated slot h2 in its upper side, which intersects the opening h', and extends somewhat short of the forward edge of the lug h, to afford a stop h3.

H is a plunger-rod having a head-portion g, which moves through an opening in the face-plate Z5, and a reduced shank-portion g', which extends through the opening h in the lug h.

H is a swinging catch-plate having flanged and perforated end-portions g2 g2, which extend down the opposite end-portions of the lug h. The perforations in the ends g2 receive the shank-portion g of the plunger at opposite ends of the lug, and the catch-plate is thus held pivotally in place. In the catchplate is a cam-slot g3; and extending through the said cam-slot and slot h2 is a pin or screw g4 fastened rigidly to the shank-portion of the Surrounding the shank-portion of the plunger, and confined between the head thereof and the lug 71 is a spring g5, which tends to force the plunger forward to the position shown in Fig. ll, wherein the pin g4 engages the stop 71.3 and is at the forward end of the cam-slot g3. The catch-plate is formed at its lower edge portion with a projecting longitudinally extending lip g, terminating at the rear end in ashoulder or stop Q7. When the bolt is shot the catch-plate rests at its lipportion upon the surface les of the flange of the tumbler-plate G, and when the bolt and tumbler-plate are retracted, the engagement of the pin or screw g4 with the slanting end of the cam-slot g3, under the action of the spring g5, which presses the plunger forward, forces the lip-portion to the surface 7cm of the IOO IIO

said flange, whereby the shoulder or stop Q7 of the catch-plate engages the shoulder or stop k2 of the iiange, and prevents the shooting ot' the bolt under the action of the spring r3. When the bolt and plunger are thus locked by the catch-plate Hin their retracted position, inward pressure exerted against the outer end of the plunger H, forces the pin g4 along the inclined edge of the cam-slot g3, and swings the catch-plate out of engagement with the shoulder k2 of the plungerplate, whereby the latter is released and the bolt will be shot by its spring r2.

I is a turn-piece or plate mounted upon a screw Iwhich passes through the back-plate and fastens the turn-piece pivotally in place against the back-plate.Y At the center of the turn-piece is a socket f into which projects a short tongue f.` The turn-piece is disk- `shaped and provided with a radial cam-projection f2. In the relative positions shown are peripheral sockets f s f4and f 5. Projecting from the back-plate, and inA the path of the cam-projection f2, in the relative position shown, is a pin or stop i12. Fastened at one end by means of a screw tls to the back-plate t4, is a finger-spring'f, which rides upon the circumferential-surface of the turn-piece I, and engages the sockets]n3 f4 and f5.

Conntersunk in the outer face ot' the door, and fastened in place by screws, is a cup or socket-plate K, which-may be provided, as shown, with a swinging cover K. In the socket-plate K is a central opening or perforation e, and extending through the body of the door, and journaled in the opening e at one side, and in an opening e in the frontplate t of the lock-casing, is a sleeve-shaft d, fastened in place by a nut d', which moves uponthe inner surface of the front-plate t. Integral with the sleeve in the socket of the socket-plate is an operating-knob or handle K2. In the inner end portion of the sleeve d is a cam-slot e2. The inner end of the sleeve iits into the socketfof the turn-piece I, the end of the cam-slot e2 fitting over and engag- -ing the tongue f', whereby turning of the sleeve d turns the turn-piece I. Extending through the sleeve d is a'plunger-rod c having a reduced inner end-portion c', around the base of which it preseutsa shoulder c2. Over the outer end of the plunger c is a cap-piece or push-button c2, which moves in the opening of the knob K2, and is held in place by means of a screw d2, which passes through the rim of the knob into an elongated slot c4 in the cap-piece. Surrounding the reduced portion c of the plunger-rod, and confined between theshoulder c2 and the base of the socketf, is a spring c5, which tends to press the plunger and its cap-piece c2 outward. Pressure exerted against the cap-piece moves the `plunger inward against the resistance of the spring c5. On the inner end-portion of the Vplunger c is an arm c6, which extends through the cam-slot e2 in the sleeve, and carries on the outer side of the sleeve a head or block c7 formed with a tongue or pawl cs.

When the plungeror push-button is forced inward, by pressure exerted against the cap c2, the arm c6 slides in the cam-slot c2, whereby the plunger kis moved on its axis a partial revolution, thus giving to the pawl c8 an inward and lateral movement.

When the knob K2 is turned to the position which causes the projection f2 to engage the stop 1512, and the spring f 6 to engage the peripheral socket fin the turn-piece, the pawl c8 is adjacent to the teeth of the disk C. Inward pressure exerted against the push -button moves the pawl c8 into engagement with a tooth of the said disk, and as the arm c6 slides in the cam-slot e2, the pawl moves laterally the distance of one tooth of the disk until the end of the plunger c strikes the base of the socket f. Thus each time the push-button is pressed inward the pawl o8 will engage and turn the disk C the distance of one notch. The dog Z2 at the disk C is lifted on its pivot in the positive movement of the disk under the action of the push-button as described,`

piece I, and the pawl o8 is brought to a position adjacent to the teeth of the disk D. When in this position inward pressure upon the push-button causes the teeth of the disk D to be engaged by the pawl o8, and the disk to be turned on its axis the distance of one tooth against the resistance of its spring fm', and held against return under the action of its spring by the respective dog Z2. When the knob K2 is turned to cause the socket f5 of the turn-piece to be engaged by the spring f6, the pawl e8 is adjacent to the teeth of the disk E, and when the push-button is actuated, the latter disk will be turned on its axis the distance of one tooth with each operation, and held against return, under the action lof its spring m', by the respective dog Z2.

When the tumbler-plate G rests at one or more of its stumps upon one or more of the rings 'rt of the disks, and the catch 2 is down,

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the shoulder or stop i5 of the catch is in the path V of the shoulder kf of the tumbler-plate. When the notches n2 are caused to register with the stumps ofthe tumbler-plate, the latter drops on its pivot with its stumps into the notches, and the shoulder Z55 of the tumbler-plate extends in a plane below the stop i2.' Thus when the tumbler-plate is down, turning of the knobfK2, to cause the tu rn-piece I to move with its cam-projection f2 against the projecting partir of the sliding-plate B', causes the said plate, bolt and tumbler-plate t0 be moved in the backward direction to retract j,

the bolt. As the tumbler-platemoves inthe backward direction, its cam-shaped end 7c3 engages the stud t8, whereby the tumbler-plate Y upon the door-jamb. It .has an opening or socket b, into which the bolt is shot when the door is closed, and a cam-surface bin the path of the plunger I-I. As before stated when the bolt is retracted the shoulder on the catch-plate I-I, engages the shoulder R9 on the tumbler-plate and holds the bolt in its retracted position. In closing the door the plunger H is engaged by the cam b of the keeper v L, and forced inward, thereby turning the catch-plate I-I out of engagement with the tumbler, and permitting the bolt to be shot by its spring into the opening b to lock the door.

In practice the combination of the lock may be changed when desired by removing the hack-plate t, which carries the face-.plate t5, as

before stated, and adjusting the rings fn. on the disks. The notch of the disk, which is in line with the arrow shown upon the .ring n when the'notch or socket n2 registers with the respective stump of the tumbler while the disk is in normal position, being numbered 0, the next notch to the right in Fig. 8,

numbered 1, and so on around each disk. The

ring fn, of each disk is adjusted to change the combination by loosening the screw n3, turning the ring on its axis, and then tightening the screw.

In Fig. 8 it will be seen that the arrow on the ring n of the disk C registers with mark No. 4 of the said disk, and this indicates that it will require four movements of the pushbutton to turn the disk C to cause the notch or socket n2 'thereon to register with the stump of the plunger. The arrow on the ring n of the disk D registers with mark No. 3 on the said disk, which indicates that itwill require three movements of the disk under the action of the push-button to move the disk from its normal position to the position of registeringat its notch 'n2 with the respective stump of the tumbler; and atthe disk E the arrow registers with mark No. 7, which will require seven movements of the push-button to move the disk from normal position to the position of registering at its notch n2 with the respective stump of the tumbler. As set, therefore, the combination will be Lt37.

To operate the lock from the outside of the door to open the latter, the operator grasps the knob K2 and turns it to the left until the stop-projection f2 on the turn-piece strikes the stop i12, as indicated inFig. 9. The pushbutton mechanism is then in position to operate on the disk C. The operator presses the push-button four times which causes the disk to be moved from its normal positionto that of registering at its notch n2 with the tumbler-stump k. The operator then turns the knob K2 to the right until the notch or socket f4 is engaged by the springf. This engagement can be readily felt by the operator. The push-button is then operated three times, which causes the disk D to be moved from its normal position to the position of registering at the notch n? with the tumblerstump 7c. The knob K2 is then turned until the socket f5 is engaged by the spring f6 when the push-button mechanism will be in position to operate upon the diskE. The push-button is operated seven times, which vcarries the disk from its normal position to that of registering at its notch n2 with the stump k2. When this has been done the tumbler-plate G will drop with its stumps into the notches n2 and will therefore be below the shoulder t3 of the catch-piece. The knob K2 is then turned still farther to the right to cause the cam-projection f2 to engage the cam-edge l5 of the plate F, and move the latter upward to disengage the dogs from the disks; and then to engage the part r of the plate B and force the latter, the bolt andthe tu mbler-plate to the position indicated in Fig. 17. Thebolt is thus retracted and the door may be opened. The upward movement of the plate F, and backward movement, and consequent rise of the tumbler-plate through its engagement with the stud t8, releases the disks, and they will be returned by their springs to normal position. `It will be understood, of course, that the combinations may be changed as desired, the number of such changes being only limited by the law of permutation as applied to the three disks and number of teeth thereon.

In the lock illustrated over sixty thousand different combinations may be made.

The lock may be readily manipulated from the inside of the door. Thus by turning the thumb-piece i the catch t2 mayv be lifted out of the path of the tumbler-plate, permitting the bolt to be retracted by turning the handle q2 to cause the finger Q3 to bear against the arm fr. The bolt may be retained in its retracted position against being shot when the door is closed, through contact of the plunger H with the beveled surface b' of the keeper, by turning the handle q2 to cause the finger qs to extend in the position shown by dotted lines in Fig. 17, whereby it engages the plate B at the arm r. Y

On the upper edge of the tumbler-plate G is aprojection k12, and pivoted against the under surface of the top plate or flange t of the casing is a latch a having a downward projecting lip a', and an upward projecting handle-portion a2 which extends through a slot in the part t. The latch a may be turned by the handle a2 to-extend at its lip a. in the path of the projection ,1912. When the bolt is retracted and the catch a is turned the lip a will extend in front of -the projection k12 and prevent the tumbler-plate from moving in the ICO Vpush-button mechanism.

forward direction and the bolt from being shot. Vhen the bolt is shot, and the catch c. is turned it will extend at its lip a behind the projection k12 and prevent the bolt from being retractedfrom the outside of the door by any one knowing the combination. This feature is desirable where the lock is employed upon house doors as a safeguard at night against the possibility of the lock being opened from the outside.

The cap-piece c3 of the push-buttonmechanism is provided to relieve the plunger c from the friction of the finger of the operator which otherwise would tend to retard the turning of the plunger under engagement with the camslot e2.

The disks being always returned to normal position when the bolt is retracted there is no danger of the door being locked and the tumbler mechanism left open to permit opening of the door by the mere turning of the knob K2.

One of the notches between two of the teeth of each disk is plugged as shown in Fig. 18, whereby it cannot be engaged by the dog Z3, though the plug does not interfere with engagement of the notch by the pawl c8 of the The plugged notch is in the relative position on the disk, which causes it to register with the dog Z3 when the disk has been turned against the resistance of its spring completely around to engage the stop p6 with its pin m. When in this last position the dog Z3 is prevented from holding the disk so that the latter springs back again one notch. Thus if a disk is turned nearly a complete revolution and further efforts are made to turn it by means of the push-button, it will move under the action of the push-button, and spring back again; and while there will be no increased resistance against the operation of the push-button the disk will be turned no farther. Y

Let into the face of the turn-piece I in the position shown is a rubber cushion y; and on the collar d of the sleeve d is a lug 'y' (see Fig. 4) through which extends a set-screw 'y2 having a rubber tip ya. the push-button is pressed inward the block or head c7 carrying the pawl o8 strikes the Ycushion y and when the push-button is returned by its spring the block c7 strikes the cushion ys. The operation of thegpush-button is thus rendered noiseless.

Although I have described a way of opening the lock by turning the push-button mechanism rst to the disk C, then to the disk D and then to the disk E, this order is not necessary because the disks are operated independently of each other. Thus when the combination is set as described the door may be opened by turning lirst to the disk E, operating the push-button seven times; then to the disk C operating the push-button four times; then to the disk D operating the push-button three times. A person having the numbers of the combination without knowing the or- In operation when find great diiiiculty in manipulating the lock. If desiredonly two disks may be provided for simple locks. To still further increase the combinations more than three disks may be employed, the lock being increased in size for the purpose if desired.

While I prefer to construct-my improvements as shown and described, they may be modifiedin the matter of details of construction without departing from the spirit of my invention as defined by the claims.

What I claim as new, and desire to secure by Letters Patent, is-

1. -In a permutation lock, the combination with the bolt, bolt-moving means and tumbler, of separate moving parts which co-operate with the tumbler in locking the bolt against movement and in releasing it, comprising rotaryrpieces which when in one position cause such positioning of the tumbler as to release the bolt, and i n other positions cause such positioning of the tumbler as to lock the bolt, a single push-button operatingmechanism for said moving parts, and shiftingmeans for the push-button mechanism for moving the same into engaging position successively with the respective moving parts, substantially as described. Y

2. In a lock, the combination with the casing, of bolt locking and releasing mechanism, comprising tumbler-mechanism, two or more movable parts each having a depression for the tumbler-mechanism to enter when the depressions register therewith, a single pushbutton operating mechanism for the 4said movable parts, and shifting means for the push-button mechanism for moving the pushbutton mechanism into engaging position successively with the respective movableV parts, substantially as described. A

3. In a lock, the combination with thecasing, of tumbler-mechanism, two or more rotary disks having depressions to receive the tumbler mechanism when the depressions register therewith, and a single push-button into engagement with the disks successively, substantially as described.

4. In a lock, the combination with the casing, of tumbler-mechanism, two or more rotary disks having depressions to receive the tumblermechanism when the depressions register therewith, and located in the are of a circle, turning .mechanism for the said disks located at the center of said arc and operated from without the casing, and means for turning the said operating mechanism into engagement successively with the respective disks, substantially as described.

5. In a lock, the combination with the casing, of tumbler-mechanism, two or more rotary .disks provided with teeth and having depressions to receive the tumbler-mechanism when the depressions register therewith, the said disks being located in the casing in the arc of a circle, and push-button turningturning-mechanism for the disks movable IOO IIO

turning-mechanism for the disks operative from without the casing, and movable into engagement with the teeth of the disks respectively, substantially as described.

7. In a permutation lock, the combination with the tumbler, of two or more rotary disks mounted in the' arc of a circle and having peripheral teeth, a socket-piece adj ustably'attached to each disk to register at its socket with the tumbler in the turning of the disk,

\ springs on the disks tending to hold them in certain initial or normal positions, turningmechanism for the disks, operated from without the casing, and movable into engagement with the peripheral teeth of the disks respectively, to engage the said teeth and turn the disks against the resistance of their springs, a sliding frame carrying dogs which engage the peripheral teeth of the disks and hold the disks against return by` their springs, the frame being movable to release the dogs from the disks, substantially as described.

8. In a permutation lock, the combination with the tumbler, of two or more rotary disks mounted in the arc of a circle and having peripheral teeth, a socket-piece adj ustably attached to each disk to register at-vits socket with the tumbler in the turning of the disk, springs on the disks tending to hold them in certain initial or normal positions, push-button turning-mechanism for the disks, operated from without the casing, and movable into engagement with the peripheral teeth of the disks respectively, to engage the said teeth and turn the disks against the resistance of their springs, a sliding frame carrying dogs which engage the peripheral teeth of the disks and hold the disks against return by their springs, the frame being movable to release the dogs from the disks, substantially as described. 4

9. In a permutation lock, the combination with the tumbler, of two or more rotary disks having depressions to receive the tumbler when the depressions register therewith, and provided with peripheral teeth, and push-button turning-mechanism for the disks, comprising a sleeve d having a cam-socket d2, a spring controlled plunger in the sleeve carrying a pawl projecting through said cam-slot, whereby inward pressure upon the plunger causes it to turn on its axis and move the pawl in a lateral direction, the sleeve being `movable to move the pawl into engaging position with the teeth of the respective disks, substantially as described.

l0. In a permutation lock, the combination vwith the tumbler, of two or more rotary disks having serrated edges and provided with adjustable socket-pieces which register with the plunger in the turning of the disks, the said disks being located in the arc of a circle, and push-button operating mechanism for the disksat the center of, said arc, comprising a sleeve d having a cam e2, a spring-controlled plunger mounted in the said sleeve and having a projection forming a pawl at said cam, whereby inward pressure against the plunger causes the projection to engage the cam and turn the plunger on its axis, and the sleeve being movable on its axis to carry the pawl into engaging position with the teeth of the respective disks, to operate substantially as described.

1l. In a permutation lock, the combination with the bolt and tumbler, of a stop in the normal path of the tumbler, two or more rotary disks provided with adjustable depressions to receive the tumbler in the turning of the disks, whereby the tumbler is moved to one side of said stop, and having serrated edges, the disks being located in the arc of a circle, springs upon the disks tending to hold the latter in certain normal positions, a boltframe, a spring-on the bolt-frame tending normally to move the latter to shoot the bolt, a stop r on the bolt-frame, a sliding frame carrying dogs which normally engage the teeth of the disks and hold the latter against the action of their springs, a turn-piece at the center of said arc having peripheral sockets, and a projection f2 to move the sliding-plate and bolt-frame, a spring f6 at the said turn-piece engaging the notches in the latter, an operating handle for said turn-piece, and push-button turning-mechanism for the disks at the said handle and movable with the handle to occupy engaging positions with the teeth of the respective disks when the spring f6 engages the respective notches of the turn-piece, the parts being constructed to operate substantially as described.

12. The combination with the lock casing, bolt, tumbler, disks having depressions to receive the tumbler in the turning of the disks, and operating mechanism for the disks, of a stop in the normal path of the tumbler, and out of the path of the tumbler when the latter enters the said depressions, a handle on the outer side of the lock casing and connected with the said stop for moving it out of the normal path of the tumbler, and bolt retracting mechanism connected with and operated by a handle on the outside of the casing, to retract the bolt when the said stop is out of the normal path of the tumbler, substantially as described.

13. The combination with the lock casing, bolt, tumbler, disks having depressions to receive the tumbler in the turning of the disks,

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and operating mechanism for the disks, of a of the door causes the said plunger to engage catch for holding the bolt against being shot the cam on the keeper and be retracted to rero when retracted, an operating plunger for release the catch from the bolt, substantially as leasing said catch projecting beyond the faceand for the purpose set forth.

plate of the casing, and a keeper for the bolt RUDOLF MOE. having a cam-surface, Wherebywhen the lock Witnesses:

is upon a door, the keeper on the door-jainb M. J. FROST,

and the bolt of the lock is retracted, closing W. U. WILLIAMS.