US2135317A - Snap action permutation lock - Google Patents

Description

Nov. 1, 1938. R. K. WINNING 2,135,317

SNAP ACTION PERMUTATION LOCK Filed Feb. 15, 1933 V null will;

:s' r /0 27 W """f /2 8 4.) 4i aaome' s' Patented Nov. 1, 1938 UNITED STATES PATENT OFFICE SNAP ACTION PERMUTATION LOCK Application February 15, 1932, Serial No. 592,942

29 Claims.

This-invention relates to improvements in snap action permutation locks.

The primary object of the invention is to provide means for automatically destroying the setting of the permutation disks or tumblers when the lock is closed. One of the disadvantages of permutation locks heretofore marketed has resided in the fact that they had no means of ensuring that the structure would become locked when closed by the operator. It has heretofore been necessary for the operator consciously to manipulate the dial of the lock in order to lock it. By means of the present invention a permutation lock is made to operate just aseflectively as a spring lock of the key controlled type, and nothing is left to chance or the memory of the operator.

More particularly stated, it is the purpose of the invention to provide means which, in the open position of the lock, will positively engage the tumblers thereof and which, in the act of closing the lock, will be subjected to a tension ultimately released automatically to project the tumblers to a position remote from that which 25 they occupy when the lock is adjusted for opening. It is my purpose to employ the closing movement of the lock shackle as a source from which energy is derived for the automatic operation of the parts as above described.

In the drawing:

Figure 1 is a plan View of an open casing of a permutation padlock embodying this invention, the cover of the casing and the tumblers having been removed to expose certain levers which are 35 added to a conventional permutation lock for the purposes of the present invention.

Figure 2 is a view similar to Figure 1 showing some of the tumblers and intervening spacer members in place.

Figure 3 is a view similar to Figure 2 showing the parts in the respective positions to which they have been moved by the partial closing of the shackle.

Figure 4 is a view similar to Figures 2 and 3 45 showing the parts in the ultimate positions which they occupy following the closing of the shackle and the automatic snap action of the mechanism for upsetting the combination.

Figure 5 is a view taken in cross section through 50 the lock in the plane indicated at 55 in Figure 2.

Like parts are identified by the same reference characters throughout the several views.

While the invention is illustrated in a form adapted for application to a permutation pad- 5 lock of conventional style, it will be understood that similar mechanism within thescope of the present invention may be adapted for all types of permutation looks. The padlock case 6 has a cover 1 upon which the manually operable dial 8 is mounted in registry with a post 9. The first tum- :5 bler I0 is carried by dial 8 and the lower tumblers II are mounted on the post mutually separated by spacers I2 carried by separate posts 13. Mo-' tion is transmitted from one tumbler to another in the usual way by means of complementary 10 pins l4 carried by the respective tumblers.

The shackle I5 has two legs, the longer of which is guided for reciprocation and rotative movement with respect to an anchorage I6 within the case. The shorter leg is notched at I! for en- 15 gagement by the rotative bolt. I8 which the permutation tumblers control. The bolt is mounted for oscillation on a pin l9 and its active element comprises an upstanding arcuate flange. Because the construction of the lock allows the bolt some latitude of movement it may, to prevent rattling, be provided, if desired, with a detent consisting of a ball 20 engaged by spring" 2] and arranged to register with a small recess or hole 22 in the casing 6. 25

In order to prevent unauthorized persons from manipulating the parts in such a way as to ascertain the combination, Iprefer that the top disk I!) of the permutation mechanism be made slightly greater in peripheral extent than the other disks and be provided with a series of notches. Figure 5 shows this disk in such a cross section that two of its notches are exposed. The construction is unimportant to the present invention except insofar as it requires a special design of the pawl hereinafter to be described.

In order that the shackle l5 of the lock may be opened from the locked position in which it is illustrated in Fig. 5, it is necessary for the operator to manipulate the permutation mechanism 40 in accordance with a predetermined combination until the deep notches 25 of the several tumblers are aligned in a position to receive the endof the flange element of bolt l8 as shown in Fig. 2. Withthe tumblers in this position, the shackle 4.5 may be pulled outwardly and the oscillation of the bolt occasioned by the outward movement of the shackle is accommodated by the reception of the flange into notches 25. If the permutation tumblers or discs were turned to their Fig. 4 position in which said notches are out of registry with the flange, the said flange would. obviously encounter the unnotohed peripheral portions of the disk and it would be impossible to open the shackle.

.The mechanism now, to be described automatically projects the tumblers from their Fig. 2 positions to their Fig. 4 positions by the storage and sudden release of energy derived from the closing movement of the shackle.

In accordance with this invention I mount on post 9 beneath the tumblers, a pair of levers 26 and 2'l. The lower lever has two arms, one of which has a portion 28 maintained byspring 29 in engagement with the end of the longer leg of the shackle I5. 26 is receivable into an opening3l in the flange of bolt l8 when the shackle is opened, thereby performing the incidental function of positively locking the bolt against, accidental movement such as might cause it to falLbeneaththe short leg of the shackle. 7

Lever 21 constitutes a Y carrier for-pawl 33 which is pivoted thereto at 34. A torsion spring 35 holds the efiective flange portions 36' and 3] of the pawl in a position for "active engagement with special notchessuch as that shown at 38 in tumbler II As above noted, the form of the flange portions 31 and 36 is dictated bythe difference in size of tumblers It! and respectively. The flange'portion 36' is at such'a radius from post 9 astobe adapted for engagement only with the periphery of tumbler .I0

Lever 21 is provided at 40 witha shoulder against which the upstanding h1g4! ofle'ver 26 is normally seated by the'tension'ot a spring 42 anchored to a lug "4'3 onlever 21 and to said y t. i. V To open the padlock the several notches 25of the respective tumblers are aligned with the efi'ective flange of bolt I 8 1 as above noted} thereby releasing the'shackle for outward movement. In the course of such movement flange I 8' is rocked into notches 25 as shown a't'Fig, 2, there by' not onlyreleasing the shackle but also making it impossible to rotate the tumblers.

In the outward movement of the shackle'ithe end 'of it's longer legis 'follo'we'd byl fev'er 26 under the torsion of spring 2-9, The resulting clockwise movement of lever 26 causes a"- similar clockwise movement of lever 21 due to the engagement of lug 4l with'fsh'ouldr '40, as above noted. In the course of this movement the effective flange portions 36Kand 31 of pawl 33 ride into thenotches 38 as sh'owr'rin Fig.- 2 and become available for the purposeof'the automatic locking function hereinafterf-to be 'described. 7

' When the shackle is pushed into the casing to the intermediate position illustrated in Fig. 3, its first action is to'oscillatelever 26' in a counterclockwisedirection. Thereby the finger 30 is removedfrom the 'oscillatorybolt 18 so that, in the continued'movement 'of the shackle, its shorterlegmay engages lug 32 on' said bolt and oscillate the bolt out of notches 25in the tumblers. f s

Inthe meantime, lever 21 is restrained against substantialmovement by the engagement of its pawl 33 with the tumblers, and by the'interaction of the bolt lfl with thetumblers which prevents themovement ofrthelatter. Accordingly, lever 21 remaining substantiallystationary, the spring 42 is distended as shownin Fig. 3, thereby storing upenergy derived from the, operator in the 7 course. of his manipulation of the; shackle.

In Fig. 3 the bolt is about to clear "the tumblers for their release.].In {i the. bolt, has been completely withdrawn from the tumblersleaving them free to rotate. They' have responded A finger 30 carried by lever;-

to the tension of spring 42 transmitted through lever 21 and pawl 33 with the result that the tumblers have moved counter-clockwise to positions in which notches 25 are wholly out of registry with bolt I 8.

In order to release the pawl 33 from the tumblers, thereby leaving the tumblers entirely free for a subsequent manipulation of the permutation mechanism, I provide on the pawl a cam surface 45 and dispose in the path of such sur- -face a pin 46. At the conclusion of the movement of lever 21 produced by spring 42, the engagement 'of the pawl cam 45 with pin 46 has completelyretracted the pawl, as shown in I claim:

.. 1.- Ina-permutation lock, the combination with a plurality of tumblers having bolt receiving openings adaptedior alignment, of a bolt engageable in the aligned openings of said tumblers, a shackle controlled by said bolt and movable toa position entirely free of said bolt when said bolt is so engaged, a pawl engageable with said tumblers, a lever carrying said pawl, a spring connected with saidlever, and means arranged to receive motion from said shackle for storing energy in said spring pending the release of said tumblers by said bolt. Y

2. In a permutation lock, the combination with a plurality of tumblers having bolt receiving openings adapted for alignment, of a bolt engageable in the aligned openings of said tumblers, a shackle controlled by said bolt and movable to a position entirely free of said bolt When said bolt is so engaged, a pawl engageable with said.

tumblers, a lever carrying said pawl, 'a spring connected withsaid lever, and means arranged to receive. motion fromsaid shackle for storing energy in said spring pending the release of said tumblers by said bolt, and means for retracting said pawl from said tumblers upon the conclusion of the'spring induced movement of saidtumblers by said pawl." V

'3. In a permutation lock, the combination with a tumbler having a bolt receiving opening; of a bolt receivable into said opening when the tumbler is properly adjusted, a shackle controlled by said bolt, a first lever provided with a spring maintaining it in engagement with the shackle,

a second lever provided with a spring connectingit to the first lever, and a pawl carried by said second lever and engageable with the tumbler in the bolt receiving position of the tumbler, the movement of said first lever in accordance with the closing movementof the shackle being adapted to store energy in said spring for the automatic actuation of the tumbler from bolt'receiving position upon release of the tumbler by the bolt;

4. In a. permutation lock, the combination with a plurality of tumblers having alignable bolt receiving notches, .of a bolt engageable with the aligned notches of said tumblers for the release of a shackle, a shackle adapted to be locked by said boltand'movable to and from its locked position, pawl means for the mechanical actuation of the tumblers from bolt receiving position, and means including a plurality of levers and a connecting spring for the actuation of said pawl means from motion derived by the movement of said shackle to said position. i 7

' 5. In a permutation lock, the combination with a plurality of' tumblers having alignablebolt receiving notches, of a bolt engageable with the aligned notches of said tumblers for the release of a shackle, a shackle adapted to be locked by said bolt and movable to and from its locked position, pawl means for the mechanical actuation of the tumblers from bolt receiving position, and means including a plurality of levers and a connecting spring for the actuation of said pawl means from motion derived by the movement of said hasp to said position, together with cam means for retracting said pawl means from said tumblers at the conclusion of the actuation of said tumblers thereby.

6. A permutation lock comprising the combination .with a post and a plurality of tumblers mounted thereon and having notches in their peripheral portions alignable to receive a bolt, of a bolt engageable with said notches, a shackle locked by said bolt except when said bolt is so engaged, a lever arranged to receive motion from said shackle and provided with spring means for maintaining it in engagement with said shackle to partake of the movement thereof, said lever being movable in accordance with the movement of said shackle to and from its locked position, a second lever fulcrumed on said post, a pawl carried thereby and engageable with said tumblers and adapted to be restrained by engagement of said bolt with said tumblers, a spring connecting said levers and adapted to be distended by the movement of said first lever while said second lever is restrained, said spring being adapted to actuate said second lever, pawl and locked by said bolt except when said bolt is so en aged, a lever arranged to receive motion from said shackle and provided with spring means for maintaining it in engagement with said shackle to partake of the movement thereof, said lever being movable in accordancewith the movement of said shackle to and from its locked position, a second lever fulcrumed on said post, a pawl carried thereby and engageable with said tumblers and adapted to be restrained by engagement of said bolt with said tumblers, a spring connecting said levers and adapted to be distended by the movement of said first lever while said second lever is restrained. said spring being adapted to actuate said second lever, pawl and tumblers, upon release of said tumblers by said bolt, interacting cam means on said pawl, and an element in the path thereof whereby said pawl is retracted from said tumblers automatically at the conclusion of its actuation thereof.

8. In a lock. the combination with a casing having a shackle receiving aperture. of a slidable shackle having an end portion receivable in said aperture and completely removable therefrom, a bolt within the casing adapted for interlocking engagement with said shackle for the retention I bolt in its said retracted position to detain said bolt in said position pending re-engagement of the shackle therewith, said bolt and shackle having portions positioned for interaction upon insertion of the shackle in said aperture for the movement of said bolt in a shackle locking direction.

9. In a lock, the combination with a casing having a shackle receiving aperture, of a slidable shackle having an-end portion receivable in said aperture and completely removable therefrom, a bolt within the casing adapted for interlocking engagement with said shackle for the retention of said shackle portion within the casing, a tumbler having a notch into which said bolt is receivable, said bolt being subject to retraction into said notch upon withdrawal of said shackle portion from the aperture of the casing, and separate spring pressed means releasably engageable with said bolt in its said retracted position to detain said bolt in said position pending re-engagement of the shackle therewith, said bolt and shackle having portions positioned for interaction upon insertion of the shackle in said aperture for the movement of said bolt in a shackle locking direction, said separate spring pressed means comprising a pawl independently movably supported in said casing, directly engageable with said bolt and adapted to receive motion from said shackle in a direction to efiect the release of said bolt when said shackle portion is pressed into said aperture.

10. In a permutation lock, the combination with a rotatable tumbler having an opening, of a bolt mounted for oscillation and comprising a pivoted plate having flange means engageable in said opening when said tumbler is properly registered, a shackle arranged for manual manipulation and having an end portion movable adjacent said bolt, said bolt and shackle portion being adapted for operative interacting engagement in each of the directions of movement of said shackle, whereby said shackle is adapted to effect adjustment of said bolt, a spring provided with a mounting operatively connected to receive motion from said shackle for the tensioning of the spring, and a tumbler disarranging pawl controlled by said spring and engageable with the tumbler, said bolt being movable independently of said pawl to effect clearance between said flange and said tumbler under pressure of said shackle, whereby to release said tumbler for pawl actuated movement under the tension of such spring.

11. In a permutation lock, the combination With a tumbler and a bolt operable about adjacent aXes, said tumbler having an opening adapted to receive the bolt when registered therewith, a shackle releasably engaged by said bolt, a pawl mounted for bodily movement adjacent the periphery of said tumbler and engageable therewith for ejecting said tumbler from its said position of registry, a spring connected with said pawl and provided with a movable mounting operatively connected to receive motion from said shackle for the tensioning of said spring, said bolt being movable independently of said pawl, whereby to clear said tumbler while said pawl remains engaged therewith.

12. In a permutation lock, the combination with a tumbler and a bolt operable about adjacent axes, said tumbler having an opening adapted to receive the bolt when registered therewith, a shackle releasably engaged by said bolt, a pawl mounted for bodily movement adjacent the periphery of said tumbler and engageable therewith for ejecting said tumbler from its said position of registry, a spring connected with said pawl and provided with a movable mounting operatively connected to receive motion from said shackle for the tensioning of said spring, said bolt being movable independently of said pawl, whereby to clear saidtumbler while said pawl remains engaged therewith, and means for retracting said Dawlifrom said tumbler in'the course of its tumbler actuating movement following release of said tumbler by said bolt.

13. In a permutation lock, the combination with a shackle, a tumbler and a bolt controlled thereby and adapted to engage with said tumbler to secure the tumbler against rotation, of a support movable about a fixed point and having a fulcrum pin movable substantially circumferentially of said tumbler, a tumbler disarranging pawl comprising a plate pivoted on said pin and having an upturned flange engageable with said tumbler, a notch adjacent the flange, and a cam surface across theflange from the notch, a spring acting on said pawl in a tumbler disarranging direction, and a fixed means in the path of said cam surface for co-acting therewith to effect disengagement of said pawl from said tumbler, said support deriving motion about said point from said shackle.

14. A permutation lock comprising the-combination with a cup-shaped casing having a peripheral opening, of a set of tumblers mounted centrally in said casing and provided with peripheral notches, a bolt pivoted to the back of the casing and having a portion receivable in the aligned notches of the tumblers and another portion movable across said opening, a shackle having an end reciprocable through the opening and notched to receive the bolt portion movable thereacross, said shackle and bolt having portions adapted for interaction in their opposite direction of movement, whereby said shackle is adapted to oscillate said bolt in both directions, a spring provided with a mounting operatively connected to receive motion from said shackle, a tumbler disarranging pawl to which said spring is con.- nected, said pawl being engageable with said tumbler to transmit thereto the energy stored in' said spring upon release of said tumbler by said bolt, and means for releasably retaining said bolt engaged' with said tumblers when said shackle is retracted through said opening, said bolt and pawl having sufiicient independence of movement to permit the retraction of the bolt from the tumblers While the pawl remains engageable therewith. c

15. In a permutation look, a lockable member, a plurality of tumblers having alignable bolt-receiving notches and having inter-engaging'features for adjusting one by another, a boltnormally blocking unlocking movement of said member except when the notches of the tumblers are adjusted to register with the bolt for permitting such movement, exteriorly accessible means'connected to one of the tumblers for adjusting said tumblers in registered relation, said means including a movable indicator and a cooperating fixed index, actuating means normally disposed out of engagement with one of the tumblers and.

shiftable into operative position therewith in response to movement of the lockable member to unlocking position, means releasably engageable with the bolt in unlocking position to detain it in said position pending re-engagement of the bolt by the locking member, and means for rendering said actuating means effective for shifting said tumbler and with it the adjusting member and its movable indicatorout of adjusted position in response to such movement of the lockable memher to locking position.

16. In a permutation lock, a lockable member, a plurality of tumblers having alignable bolt-receiving notches and having inter-engaging features for adjusting one by another, a bolt normally blocking unlocking movement of said member except when the notches of the tumblers are adjusted to register with the bolt for permitting such movement, exteriorly accessible means connected to one of the tumblers, said means including a dial rotatable in connection with said tumblers for adjusting them in registered relation, actuating means normally disposed out of engagement with one of the tumblers and shiftable into operative position therewith in response to movement of the lockable member to unlocking position, means releasably engageable with the bolt in unlocking position to detain it in'said positionpending re-engagement of thebolt by the locking member, and means for rendering said actuating means effective for shifting said tumbler and with it'the adjusting member and its dial out of adjusted position in response to such movement of the locking member to locking positlon. 7 a

17. In a lock, the combination with a'casing having ashackle-receiving aperture, of a shackle having an end portion receivable in said aperture and completely removable therefrom, a bolt within the casing adapted for interlocking engagement with the shackle for the retention of said shackle portion within the, casing, a plurality of "tumblers having alignable notches into which said bolt is receivable, and having inter-engaging features for adjusting one by the other in such aligned position, said bolt being subject to retraction into said notches upon withdrawal of said shackle portion. from. the aperture of the a means connected to one of the tumblers for adjusting. said tumblers in registeredrelation, said means including amovable indicator and a cooperating fixed index, actuating means normally disposed out of engagement with one of the tumblers and shiftable into operative position there- I with upon withdrawal. of said shackle from the casing, and means for rendering said actuating means effective for shifting said tumbler and with it the adjusting member. and its. movable indicator out of adjusted position in response to movement of the shackle in looking direction.

18. In a. lock, the combination with a casing having a shackle-receiving aperture, of a shackle having an end portion receivable in said aperture and completely removable therefrom, a bolt within the casing adapted for. interlocking engagement with the shackle for the retention of said shackle portion within. the casing, a plurality of tumblers having alignable notches into which said bolt is receivable'and having inter-engaging features for adjusting one by the other. insucb,v

aligned position, said bolt being'sub-ject to re- 'with said tumblers for adjusting them in regis- 't'ered relation, actuating means normally disposed out of engagement with one of the tumblers and shiftable into operative position therewith upon withdrawal of said shackle from the casing, and means for rendering said actuating means effective for shifting said tumbler and with it the adjusting member and its dial out of adjusted position in response to movement-of the shackle in locking direction.

19. In a permutation lock, a locking member, a plurality of tumbler disks having alignable bolt receiving notches, a bolt normally blocking unlocking movement of said member except when the notches of the tumblers are adjusted to register with the bolt for permitting such movement; externally adjustable means including a movable indicator and a cooperating fixed index, said means being connected to the tumbler disks for adjusting them in registered relation; means for engaging at least one of the tumbler disks and movable for shifting it out of adjusted position, and means through which the movement of the locking member produces such movement of the engaging means and shifts the indicator simultaneously with the shifting of said tumbler.

20. In a permutation lock, a locking member, a plurality of tumbler disks having alignable bolt receiving notches, a bolt normally blocking unlocking movement of said member except when the notches of the tumblers are adjusted to register with the bolt for permitting such movement; an adjusting member including a dial rotatable in connection with said tumblers for adjusting them, and means actuated by the movement of the locking member and in positive driving relation to at least one of the tumblers for shifting it and with it the dial out of adjusted position when said locking member moves to locking position,

21. In a permutation lock, the combination with a casing, a shackle having one end releasably mounted in the casing, and a plurality of tumblers having alignable bolt receiving notches, of a pivoted bolt having portions alternately engageable directly in said tumbler notches and the notched releasable end of the shackle for restraining it against withdrawal from the casing, means normally out of engagement with a tumbler for mechanically actuating it to bolt restraining position, and means for rendering said tumbler actuating means effective on the tumbler when the releasable end of the shackle enters the casing and swings the cooperating portion of the bolt out of engagement with the tumbler notches, said means including a spring arranged for storing energy derived from the movement of the shackle.

22. In a permutation lock, the combination with a casing, a shackle having one end releasably mounted in the casing, and a plurality of tumblers having alignable bolt receiving notches, of a pivoted bolt having portions alternately engageable directly in said tumbler notches and the notched releasable end of the shackle for restraining it against withdrawal from the casing, means normally out of engagement with a tumbler for mechanically actuating it to bolt restraining position, said actuating means including a pivoted pawl engageable with said tumbler for mechanically actuating the same, and bifurcated at the end remote from its pivot to provide a tumbler engaging arm and a cam arm, means for rendering said tumbler engaging arm eifective n the tumbler when the releasable end of the shackle enters the casing and swings the cooperating portion of the bolt out of engagement with the tumbler notches, said means including a spring arranged for storing energy derived from the movement of the shackle, and means positioned to co-act with the cam arm for withdrawing the pawl arm from tumbler engagement upon conclusion of the mechanical actuation thereof.

23. In a permutation lock, the combination with a plurality of tumblers having bolt receiving alignable openings, a bolt movable when said openings are aligned therewith, and means for manipulating said tumblers, of pawl means pivoted at one end and bifurcated at its opposite end to provide remote from its pivot a tumbler engaging arm and a cam arm, said tumbler engaging arm being engageable with said tumblers for the mechanical actuation thereof, and means including a spring for the actuation of said pawl means, and means coacting with said cam arm for withdrawing said pawl means from tumbler engagement at the conclusion of the mechanical actuation of said tumblers.

24. In a permutation lock having disk tumblers and dialing means including a rotatable operat ing knob, a lock! housing comprising a cupshaped rear housing member and flanged front member fitted therein, a flanged liner fitted in said rear housing member, the flanges of said liner and front member abutting and the rim of the rear housing member being spun over the front member, the dialing means being arranged on the front member, an axle projecting from said liner on which said knob is rotatably mounted, one of said tumblers being attached to said knob, and the other tumblers being loosely mounted on said axle.

25. In a shackle lock, a shackle locking mechanism comprising a swinging lock bolt operable to move into shackle-retaining position by inserting the shackle and displaceable from said position by withdrawing the shackle when the mechanism is in a release condition, permutation-controlled means including disk tumblers cooperable with said lock bolt to lock the same in shackle-retaining position and adjustable to establish said release condition, said lock bolt having an index member and said tumblers having slots receiving the same when the lock bolt is in displaced position, means cooperable with the lock bolt in its displaced position to prevent movement thereof into shackle-retaining posi-.

tion until it is actuated by inserting the shackle, and means rendered operable by the displacement of the lock bolt for movement into cooperative relation with said tumblers, and springactuated to cause a deranging of said tumblers to effect the locking of the lock bolt when in shackle-retaining position.

26. In a shackle lock, a shackle locking mechanism comprising a swinging lock bolt operable to move into shackle retaining position by inserting the shackle and displaceable from such position by withdrawing the shackle when the mechanism is in a release condition, permutation controlled means including disk tumblers cooperable with said lock bolt to'lock the same in shackle-retaining position and adjustable to establish said release condition, said lock bolt having an index member and said tumblers having slots receiving the same when the lock bolt is in displaced position, means cooperable with the lock bolt in its displaced position to prevent movement thereof into shackle-retaining position until it is actuated by inserting the shackle, and means movable, when the lock bolt is displaced, into cooperative relation with said tumblers and spring-actuated to cause a deranging of said tumblers to efiect the locking of the lock bolt when in shackle-retaining position.

27. In a permutation lock, a locking member,

a plurality of tumbler disks having alignable bolt receiving notches, a bolt normally blocking unlocking movement ofsaid member except when the notches of the tumblers are adjusted to register with the bolt for permitting such movement; an adjusting member including a dial rotatable in connection with said tumblers for adjusting them, and means actuated by the movement of the locking member in positive driving relation to at least one of thetumblers for shifting itout of adjusted position when said locking member moves to locking position.

28. In a permutation lock, the combination with a plurality of disk tumblers co-axially mounted and, having alignable, bolt-receiving openings, a bolthaving a portion engageable in said openings when they are aligned therewith,

and means for manipulating said tumblers, of

a pawl and means on which it is mounted to swing about the axis of said tumbler disks in driving engagement with at least one of said disks for the mechanical actuation thereof when the bolt is disengaged from the tumbler openings, together with spring means normally urging said pawl in the direction'for said driving engagement. I

29. In a permutation lock, the combination with a plurality of disk tumblers co-axially mounted and having alignable, bolt-receiving openings, a bolt having a portion engageable in said openings when they are aligned therewith, and means for manipulating said tumblers, of a pawl and means on which it is mounted to swing about the axis of said tumbler disks in driving engagement with at least one of said disks for the mechanical actuation thereof when 7 the bolt is disengaged from the tumbler openings, together with spring means normally urging said pawl in the direction for said driving

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