US1075139A

US1075139A - Lock.

Info

Publication number: US1075139A
Authority: US
Inventors: Bruce Borland
Original assignee: Individual
Current assignee: Individual
Priority date: 1913-03-13
Filing date: 1913-03-13
Publication date: 1913-10-07
Anticipated expiration: 1930-10-07

Description

B. BORLANDl LOCK.

APPLICATION FILED rm. s, 1906. RBNEWBD MAB. 13, 191s.

l ,075,1 39. Patented Oct. 7, 1913.

4 SHEETS-SHEET l.

B. BORLAND.

, LOCK. APPLICATION FILED PEB. s, 1906. RENEWED MAE. 1a. 1913.

l @'75 l39 Patented 0015.7, 1913. '9 9 y 4 SHEETS-SHEET 2.

COLUMBIA PLANOGRAPH COA, wAsmNcToN. D. c,

B. BORLAND.

LOCK.

APPLIOATION FILED 1113.8, 1906. RENEWED MAR. 13. 1913.

l 075,1 39, Patented 0013.7, 1913. 4 SHEETS-SHEET 3.

J//O 8j, 3103,15/ @E l l 55 e@ B. BORLAND.

LOCK.

APPLICATION FILED TBB. 8, 1906. RENEWED MAR. 13, 1913.

1,075,139. :9mm-.ea 0Gt.7,1913.

4 SHEETS- SHEET 4,

coLUMmA PLANOQRAPH Co.,w.\sH:Na1'oN. u. c.

1TB@ STATES? PATEN 1 QFFQE.

BRUCE BORLAND, OF CHICAGO, ILLINOIS.

LOCK.

Application filed February 8, 1906, Serial No. 300,074. Renewed March 13, 1913.

T0 all t0/0m it may concern Be it known that I, BRUCE BORLAND, a citizen of the United States; residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Locks, of which the following is a speciiication, reference being had therein to the accompanying drawings.

This invention relates to improvements in multiple key locks part-icularly adapted for use with the drawers or boxes of safety deposit vaults, and the like, although certain features thereof are applicable for use with other locks.

The invention consists of the organizations and arrangements of parts hereinafter' particularly described and then pointed out in the appended claims.

ln the accompanying drawings- Figure 1 is a view of the lock in elevation with the cover removed and showing the bolt in its shot or locked position; Fig. 2 is a similar view with the locking bolt in its shot position, the holt locking dog being released; F ig. 3 is a like view showing the locking bolt retracted; Fig. 4 is a section on the line 4-4 of Fig. 1; Fig. 5 is a plan view of the lock showing the primary tumblers disengaged from their operating pinions to reset the lock, that is to change the combinatio-n and adapt the same to a new key; Fig. 6 is a detail perspective view, diagrammatic in character, of the primary and master t-umblers, and certain associated parts, showing such tumblers in their normal or locking positions; Fig. 7 is a similar view of the tumblers showing the parts in their unlocking positions; Fig. 8 is a sectional view on the line 8 8 of Fig. 3; Fig. 9 is a detail view of the sliding plate on which the primary tumblers are mounted; Fig. 10 is a detail view of one of the` washers associated with the master tumblers; Fig. 11 is a similar view of the one of the washers for the primary tumblers and their operating pinions; Fig. 12 illustrates the depositors key used for actuating the primary tumblers; Fig. 13 is a view of an auxiliary key for lining up the primary tumblers; F ig. 14 is a detail of the guards key employed for actuating the master tumblers; Fig. 15 is an end view of the same; Fig. 16 is a diagrammatic view showing the arrangement of the groove in the guards key; Fig. 17 is a similar view of the key Specification of Letters Patent.

Patented Qct. 7, 1913.

Serial No. 754,127.

employed in resetting the lock; Fig. 18 is a view of a key employed for alining the master tumblers; Fig. 19 is an end view of the same; Fig. 20 is a longitudinal sectional view of such key; and Fig. 21 is a similar view of an auxiliary key.

Referring to the drawings, 25 indicates a suitable case which is shown as rectangular and provided at one end with a bolt opening 26. A cover plate 27 is suitably secured to the case 25 and is provided near its rear end with a key sleeve 28 and between such sleeve and the front end of the lock with a second sleeve 29. Suitable openings 30 passing through the cover and case are provided for screws to secure the lock in position.

The locking bolt 31, which extends through the opening 26, is provided within the case with a head 32 adapted when the -bolt is thrown to abut against the front end of the lock case, as shown for example in Fig. 1. This head is provided at its upper end with a rearwardly extending flat tail 33, located adjacent the cover plate, Figs. 1 and 4, and which is in the form of a rack bar having its teeth extending inwardly. Beyond the rack teeth the tail 33 is provided with a curved or concave portion 34. At the bottom of the case the bolt 31 is provided with a second tail 35 which rests against the back wall of the case and to which is pivoted, as at 36, a locking do-g or latch 37. The thickness or depth of the dog is substantially the distance between the tail 35 and the cover plate 27. The rear or locking end of the dog 37 is adapted to engage, when the bolt is in locked position, Fig. 1, with a stop consisting` in the present instance of a shoulder 38 formed in the lock case. Between the shoulder 38 and the bottom wall of the lock is a longitudinal cavity 39 into which the locking end of the dog slides when the bolt 31 is retracted, as shown in Fig. 3, a shoulder 40 on the dog then cooperating with the stop 38 to limit the retractive movement of the bolt. The front end of the dog is in the form of a rack bar, and at the rear of the teeth thereof is an enlarged tooth or lug 41. The dog 37 may be held in its locking position by gravity, as the pivot 36 is back of the center thereof, but preferably a suitable spring is employed for the purpose, such as the leaf spring 42, the front end of which is fixed to the rear .end of the bolt- .tail 35 while its other end reacts against a pin 43 on the doo'.

rThe rear portion of the lock case is made solid, as at 44, having a cavity 45 which is open at its front side, as at 46. rl`he rear wall of this cavity is provided with a recess 47. The back wall of' the case at the bottom of the cavity 45 is stepped up as at 48, Fig. 4, and a key guide consisting of a post 49 is fixed in the stepped up portion 48 and .eX- tends into the circular key opening of the sleeve 23 concentric with suchopening. The post 49 is provided'with a guide stud 50 at its free end. A pinion 5l is located in the bottom of the cavity 45 and vabove such pinion are rotatable tumblers 52, which are herein designated master tumblers, tour ot such tumblers being shown in the present instance. rllhe pinion 51 and tumblers 52 are concentric with the post 49 andare sep-V arated from each other by washers 53 into the opening of each of which extends, as shown in Fig. 4 a hub portion 54 of a tumbler, the washers-thus'providing pivot supports for the tumblers and-keeping them centered. By reason of the friction between the washers and tumblers the latter are held against accidental rotation. A similar washer is located between the pinion 5lA and` the bottom ofl the cavi-ty 45. rlhese washers fit the cavity 45 snugly and .arel provided with tongues 55 (Fig. 10) which project into the recess 47 and prevent move-ment of the same. Each of the tumblers 52 and the piniono5l is provided with a central opening through which the key post 49 extends, such openings being in alinement and of greater diameter than the post. Each opening is provided with inwardly directed teeth and at a certain point therein a tooth is omitted providing a space 56. Each tumbler 52 is in the form Aof a peripheral gear provided with at least one or in some instances two missing teeth. For examples, the upper and second tumblers 52, as shown in Figs. 6 and 7, each has one tooth missing providing a recess 57, while the third and fourth each has a recess 57 and a recess 58. As shown in the drawings, the pinion 5l and tumblers 52 project through the opening 46 in the wall of the cavity 45 and at this point the washers 53 are cut away as at 59 so that the teeth of the tumblers will project beyond the same.

A post 60 is pivoted, as shown in Fig. 4, in the back wall and cover 27 of the case and this post is provided at its lower end with a segmental cam or eccentric 61. A pinion 62 is fixed to the post above the cam 6l so as to engage the pinion 5l. Above the pinion 62 the post is provided with a block providing a cam 63which is radial to the post and has a rounded nose, rllhe cams 6l and 63 are at a fixed angle with relation pair of teeth or to each other being at substantially. a :right angle in the present instance. The cam 63 is substantially vthe height of the combined thickness of the tumblers 52 and washers 53, as shown in Fig. 4, and at its rear side has a fins 64 and 65 which are radial to the post 60. The teeth 64 and 65 are in line with spaces between the teeth of the pinion 62. The teeth signed to enter 52 when the recesses are properly alined to receive-the same to permit of the turning of the pinion 62 in one directiony or the-other for the purposes hereinafter explained.

The rear wall of the case in line Vwith the sleeve 29 is provided vwith a stepped upportion 66 formed with a socket 67 in its bottom. A wall 68 is formed in the lock case toprovide a circular well 69 having an opening in its front side. A key post 70 is seated in the sleeve 29 and is provided with a reduced extension 7l passing through the well 69 4and having its end seated in the socket 67. A key groove passes through the post and the extension 71, as shown in Fig. 4. rllhe post 70 has fixed thereto just within the cover 27 a pinion 72 havingA a concentric -toothless portion 73 which is adapted to coperate with the curved portion 34 of the bolt tail 33, as hereinafter described. A series of five gears 74 having central `alined openings 7 5, throughv which the extension 71 passes,is located in the cavity 69 `being spaced apart by suitable friction washers 76, the gears beingpivoted thereon in the same man-ner as the tumblers 52. -Each of thev gears 74 has a key opening 77, one of the walls Yof which is parallel with ,line radial to the gears `while the other wall is stepped as at 7S, five steps being provided in the present instance and the stepped portion extending from the outer end of the straight wall back to the opening 75 so that thesteps decrease in distance from the center o-f` the tumbler as the stepped portion recedes to the opening 75. Each of the gears is provided with a solid or toothless portion 79, to limit the movement of such gears to such distance as is required for the proper operation of the lock.

A sliding plate is adapted to slide on the back'wall of the case and this plate is provided at suitable points with elongated.

slots Sl through which pass guide screws or studs S2 fixed to the case. This plate is cut out, as at 33, to clear the wall 66 and at its lrear end is bifurcated at 34, the cam 6l being located in the bifurcation. At its front end the plate has fixed thereto a post which in the present instance extends to the cover 27 having its end flatto slidingly engage such cover. lRotatable toothed tuinblers 36, corresponding in number to the gears 74, and normally in engagement there- 64 and 65 are de-L the recesses in the tumblers with, are pivoted on Ithe post 85. These tumblers are spaced apart by extensions of the washers 7G. Each of the tumblers 86 at a certain point has a missing tooth to provide a slot 87, such slots being designed to be brought into register as hereinafter described, and the space between one pair of the teeth of each tumbler is enlarged to provide a rectangular recess 88. A post 89 is fixed to the back wall of the case in such position that when the recesses S8 are in alinement and the plate 80 is moved forward the slots 88 will engage the post thereby permitting of the movement of the plate and the disengagement of the tumblers 85 from the gears 74.

A pinion 90 is pivoted at the end of the post 85 being provided with a slot similar to the slots S7 of the tumblers and a recess similar to the recesses 8S of such tumblers. This pinion is adapted to mesh with the gear 72 and is provided with` a toothless concave portion 91 at its periphery adapted to cooperate with the convex toothless portion of the pinion 72, by which the pinion 90 is locked against rotation.

The key for operating the tumblers 86 to bring the slots 87 thereof into alinement to receive the lug 4l of the bolt locking dog and which is designated the depositors key, is illustrated in Fig. 12. This key, 92, consists in the present instance of a flat plate of suitable size to tit in the key slot provided therefor, and the bits 93 thereof are so arranged as to coperate with the steps of the key openings in the gears 74. When the key is inserted in the lock and turned to the right or clockwise in the direction of the arrow in Fig. G each gear is picked up and moved as the bit of the key associated with such gear comes into engagement with the step with which it is designed to coperate. The slots 87 are normally out of alinement (Fig. 6), and the movement of each gear is just sufficient, when the key is turned the proper distance which in the present instance is one half a rotation, to bring all the slots into alinement (Fig. 7) and opposite the lug l1 of the dog. During this operation the toothless portion of the gear 72 moves past the toot-hless portion of the pinion 90 until at the proper moment the first advancing tooth of the gear 72 comes into engagement with the first tooth of the pinion 90 to move the pinion the proper distance to line up its slot 87 with the slots S7' of the tumblers (Fig. 7). The key 92 has a notch 94 adapted to receive a shoulder 95 at the entrance of the sleeve 29 in the usual manner to prevent withdrawal of the key while the pinions are being turned.

The guards key associated with the master tumblers 52 consists of a tubular body portion 96 into which extends a cylindrical shell 97. The portion of this shell that the recesses 57 are out of alinement.

`When this key is inserted on the guide post 4-9 the stud 5() thereof enters the slot 98 and while the straight portion of such slot passes along' the stud the key is held from turning. As soon, however, as the key pinion engages the first tumbler 52 the sinuous portion of the slot comes into engagement with the stud 50 so that as the key is turned the tumbler is rotated, and as each successive tumbler is picked up owing to the course of the slot it is turned in unison with the preceding tumblers so that when the last tumbler is engaged and turned the slots 5.7 of the ytumblers are alined and in position to receive the toot-h 65 when the pinion 62 is turned by the action of the pinion 5l.

The normal or locked positions of all the parts are shown in Fig. l. To unlock the lock the deposito-rs key is inserted and turned clockwise about one half a rotation. This brings the slots 87 of the tumblers 86 into position to receive the lug ll. Further movement of the key is prevented by reason of the fact that although the first advancing tooth of the pinion 72 comes int-o engage ment with the end tooth of the bolt tail 33, the bolt is still locked by the dog.

The guards key is now inserted in the lock to release the locking dog 3'?. As soon as the guards key has entered the lock far enough to engage the pinion 51 the key is turned clockwise, this being permit-ted by the terminal of the key slot 99, moving the pinion 62 contra-clockwise and thrusting the cam 63 against the end of the dog 37, the tooth 65 entering the alined slots (F 3) as the tumblers 52 and pinion 5l are turned together. This disengages the dog from the shoulder 38, as shown in Fig. 2, the lug 41 entering the alined recesses 87 in the tumblers 8G. Until the slots or gates of the tumblers 52 are lined up movement of the cam is prevented owing to the obstruction presented to the tooth 65 by the teeth of the tumble-rs.

The object in having the tooth 65 aline@ with a space in the pinion 62 is to bring it opposite to the alined slots in the tumblers 52 such slots being provided by the omission of a tooth which if present would of course correspond with aspace in the pinion The preliminary rotation of the pinions 74 by the key 92 tov bring the tumblers 86 into alined posit-ion, carries the .toothless po-rtion of the pinion 72 out of engagement with the concave portion 34 ofthe b Olt tail 33, and the teeth of the pinion 72 being now in engagement with the teeth of the bolt tail, further rotation of the key 92 retracts the bolt, the rear end of the dog entering the cavity 39, as shown in Fig. 3. During the retraction of the bolt the tumblers 86 are rotated in a contrary direction and as they cooperate with the teeth on the lock-ing'dog motion is also imparted to the bolt through such bolt tail. This insures an even movement of the bolt and provides a stronger constructiomthat is o-ne less liable to breakage.

lin locking, the operation heretofore described is reversed, but owing to the engagement of the pinion 90 and tumblers 86 with the teeth of the bolt dog 37, such tumblers are rotated in unison, until the parts assume the'positions of Fig. 2. Then as the key 92 moves back through `vthe `key openings 77 into engagement with the straight wall of each pinion 74, the tumbler associated with the pinion'is restored to its original position by the movement of the pinion 74. rlhis insures the restoration of the tumblers 80 to their proper relative positions. The straight wall of each key opening 77 is offset from the radial one half the thickness of the key so that the key will bear squarely against-such wall, as shown in Fig. 1.

ln unlocking, both keys are necessary, as the guards key is required to release the locking dog and this cannot be done until the depositors key has set the tumblers into unlocking position. For locking, however, the guards key is not necessary as when it is withdrawn the tumblers 52 are restored as well as the cam, and then the bolt may be thrown simply by the depositors key. his key can not be withdrawn, however, until the bolt is thrown.

When it is desired to change the key 92 for another d-epositors key, that is to reset the lock or change its combination, the old key 92 is inserted in t-he lock and the tumblers thrown into position to bring the slots -87 thereof in alinement which also alines the slots S8. A resetting key 100 which will be held by a custodian such as the manager of the vault, and which is similar to the guards key, but having its sinuous portion of diiferent arrangement, as indicated by 101, Fig. 17, is inserted into the key sleeve 28. The groove of this key is so arranged as to bring the slots 57 of the two upper tumblers 52 in Figs. 6 and 7 into alincment with the slots 58 of the lower tumblers so that when the key engages the pinion 51 and is turned contra-clockwise the tooth 64 will enter the alined gates or slots as the pinion G2 @is turned.y rThis action moves the cam 61 against the front Loraio wall of the bifurcation S4 of the plate 8O sliding such plate forward and disengaging the tumblers 86 from Athe gears 74. The customers key 92 is now turned to locking or normal position and withdrawn and the l-new-customers key is then inserted. rJhis key is now turned so as to move the `gears 74 into such position as to bring the first tooth of the pinion 72 into engagement with the end tooth of the bolt tail 33, which is the position of the key under normal conditions when the slots 87 of the tumblers 86 -arealined. |The key 100 is now turned to r-etract the sliding plate thereby'throwing the tumblers 86 into engagement Ywith the gears 74, and the lock can then only be operated by the new key until the combination-is again changed.

The ypart-

sv

74 and 86 constitute two-part Y tumblers and by moving the pack composed of-the parts 86 by sliding the plate 80 to disengage this pack from the pack composed ofthe partsp74 these tumblers may bel reset to different combinations for different cust-omers lkeys as above'set forth and the packs then rengaged by reverse movement of theplate so that thelock is set upon a particular customers key, the movements of the plate to engage and disengage the packs being accomplished by the cam or eccentric 61 acting on the plate and which is locked and unlocked and operated for these respective purposes by the managers resetting lock, vthe movement of the key of this latter lock being transmitted to the eccentric through the intermediatev pinions 51 and 62. The managers lock constitutes a supplemental safety lock to prevent unauthorized resetting of the combination.

ln the event that the tumblers S6 are moved out of their proper relative positions, owing to an attempt to pick the lock, for instance, l employ a key 102 such as shown in Fig. 13, for restoring the same. This key is provided with an elongated bit 103. By inserting` this key in the lock and turning the saine contra-clockwise the straight walls of the key openings 77 in they gears 74 will be placed in alinement, this being the condition of the lock when the gears are in normal positions, and this restoring` of the gears properly positions the tumblers actuated thereby.

n the event that the tumblers 52 accidentally become jolted o-r thrown out of prop-er position, thesetumblers may also be restored through the medium of a suitable keyr 104 substantially like the guards key except that th-evcylindrical shell 105 terminates just inside the tubular body its project-ing portion being toothed as at 106. The slot 107 of'this key, such slot being straight, is out of engagement with. the guide pin 50-when the key is in thevlock, so that the key may be turned freely in either direction. This key has an enlarged tooth 108 designed to enter the recesses 56 in the tumblers 52, and is extended beyond the key as shown in Figs. 18 and 20. It is to be understood that when the tumblers 52 are in proper positions the spaces 56 are in a definite relation to one another. If when the proper customers key is in and turned to unlocking position, upon inserting the guards key in the lock and turning the same it will not release the dog, it will then be known that the tumblers have been moved and are not in proper position. The key 104 is then entered on the post 49 and turned until the end of the tooth 108 linds the recess 56 in the first tumbler and so on until it engages with and enters the recess 56 of each tumbler. The key is then turned until its slot 107 is in line with the stud 50. The key may then be withdrawn. `With this key it may happen that when withdrawn the tumblers may not be in exactly the proper position, for although lined up properly with relation to each other they may be a fraction of a tocth out of relative relation with the guide stud 50. rlfhis is rendered possible by reason of the fact that as the key 104 may turn freely it may be moved slightly after becoming disengaged with the tumblers to withdraw 'it from the post 49. To remedy this and insure accurate alinement of the tumblers with reference te the stud 50, I employ an auxiliary key 109 which differs from the key 104 only in that the cylindrical shell 110 extends into the body of the key in the same manner as the guards key but has its slot 111 straight throughout its length. This key will remedy a disalinement to the extent of a fraction of a tooth owing to the fact that the projecting end or its enlarged tooth is beveled, so that if th-e tumblers are slightly oli'l in position, the beveled end will enter the alined recesses moving over the tumblers into absolutely accurate position. This key cannot turn owing to the engagement oi its slot with the stud 50.

Having described my invention what I claim as new and desire to secure by Letters Patent of the United States, is-

1. In a permutation lock, a secondary tumbler having a predetermined operative position, a. primary tumbler geared into the secondary tumbler and capable of mo-ving the same to said predetermined position by its own motion to another predetermined position, the primary tumbler being provided with dierently positioned steps one of which is engaged by the key ward according to the length of the key ward, and means for disengaging the secondary tumbler from the primary tumbler so that the predetermined position of the primary tumbler may be changed and the secondary tumbler reengaged.

2. In a permutation lock, a plurality of secondary tumblers having a common predetermined operative position, a primary tumbler geared into each secondary tumbler and capable of moving the same to said predetermined position by its own motion to another predetermined position, the said primary tumbler being provided with dilterently positioned steps one of which is engaged by the key ward according to the length or" the key ward, and means for Simultaneously disengaging all of the secondary tumblers from the primary tumblers so that the predetermined positions of the primary tumblers may be changed and the. secondary tumblers rengaged.

3. In a lock, the comb-ination with a bolt and a locking dog therefor, of means to release the dog, and key-operated tumblers to cooperate with the dog to retract the bolt.

4. In alock, the combination with a. bolt and a locking dog therefor, of means to release the dog, and keyoperated gears for communicating motion to the dog to retract the bolt.

5. In a` lock, the combination with a bolt and a locking dog therefor, of tumblers, and key operated gears to rst turn the tumblers into position to permit of the unlocking ot' the dog` and then retract the body by coperating with the dog, and means to release the dog.

6. In a lock, thecombination with a. bolt, a locking dog pivoted thereto and having a rack bar, of tumblers for preventing movement of the dog except when in predetermined position, and gears for moving the tumblers first into such predetermined position, wherein they are engaged by the rack bar upon the release ot the dog and then impart motion to the dog to retract the bolt, and means to release the dog.

7. In a lock, the combination with a bolt having a. tail provided with a rack bar, and a locking dog pivoted to the bolt and also provided with a rack bar, of a` cam to release the dog, pivoted tumblers normally preventing movement of the cam, a second set of pivoted tumblers to secure the dog against movement except when in predetermined position, key operated gears engaging the latter tumblers to turn the same first into their predetermined position to permit of the release of the dog under the action of the cam, such tumblers then being engaged by the rack bar of the dog, one ot' the said gears engaging the bolt tail rack, whereby motion is imparted to the bolt at a plurality of points to retract the same.

8. In a lock, the combination with a bolt and a locking dog therefor, ofkey tumblers adapted to be moved to predetermined positions to permit of the release of the dog, and a connection between the bolt and the tumblers whereby when the bolt is thrown the g tumblers are simultaneously restored to such predetermined posit-ions and are then returned to their original positions by the' key.

9. in a lock, the combination with a bolt and a locking dog therefor having a rack bar,

which the tumblers are moved to predeterthe dog, the said dog when released moving its rack bar into engagement with the tumblers and being maintained in such engagement during the retraction of the bolt, whereby when the bolt is thrown the tuinblers are restored in unison-to their predetermined positionand then returned to their original position bythe locking'movement of the key operated gears.

10. ln a lock, a plurality of rotatable tumblers havingv toothed openings, a key having teeth to cooperate with the tumbler teeth, and means on the lock to 'guide the vkey to move the said tumblers into predetermined position'.

11. ln a lock, a plurality of rotatable tuinblers having central alined toothedopenings, a key having its end in the form of a pinion adapted to enter the tumbler openings and engage the teeth, and means on the lock to guide the keyto move the ltumble-rs into predetermined position.

12.1n a lock, a plurality of rotatable tumblers having central alined toothed openings, friction was-hers separating the tuinbl-ers and on which the latter' areV pivote'd, av key' post with which the tumblers are concentric 4and having a stud, and a key having a pinion to engage the toothed openings and a guide groove for the stud whereby as the key is inserted in the lock and turned the tumblers are successively picked up and rotated to bring the tumblers into predetermined position'.

18. ln a multiple key lock, a bolt, a plurality of two-part tuinbl-ers the respective parts whereof force-action with dierentkeys, a plate'- on y which the resettable parts of the tumblers are mounted, means for' moving the plate for resetting the'A tumblers, and a key-oper'- 1 ated resetting lock for' locking' and unlocking and actuating theV lplateactuating means.

14C. In a multiple key lock, a bolt, a plurality of two-part tumblers the respective parts whereof are constructed to be reset Vfor co-action with different keys, 1a plate on:

which 'the r'esettab'le parts of the tumbler-s are mounted, an leccentric for' moving the plate for resetting the 'tumhlers, Ianda keyoperated resetting lock -for locking and unlocking and actuating the eccentric.

15'. 'In a multiple key lock, a bolt, a plurality of locking tumblers capable `ofl cooperation with the bolt in dierent combi-- are constructed to be reset key-lock operating the eccentric lagainst resetting the combination when locked.A of nivo-ted tumblers, key operated gears by 16. ln a multiple-key lock, a bolt, a plurality of two-part tumblers the respective mined position to permit of the release of parts of which are constructed. to be reset i force-action with different keys, a pla-te on 1 which the resettable parts of the tumblers ,are mounted', an' 1 plate, a key-'operated Vresetting lock, and' I p'inions interposed and resetting lock and moving the eccentric -to connect and.

eccentric for moving the between the 4 eccentric disconnect the two-parts of the tumblers when the resetting lock is operated: by 'its key.

17. In amultip-le-key lock, a bolt,I aphirality of locking tumblers adaptedV to beset for co-action with different keys, va plate controlling the 'resetting' of the' tumblers, an eccentric vto move the plate, a key-operated fr'esetting lock operating the eccentric when unlocked Iand locking the eccentric against*v resetting the combination. when locked, the arrangement of parts'beingfsuch that the tumblers are locked against rese-ttin'g for a different key until they are moved to position to unlock the bolt and. the resetting' lock-operates the pla-te'.

18. In a` changeabl'e'key" lock, a bolt, sepa'- r'ately ,organized mastert tuinblers and locking tumblers both of which are Setto retract the bolt, a plate for resetting the locking tumblei's, al guards key for actuating themaster-tumblers, a key for actuatingzthe locking-tumblers to position for:v withdrawing thewbol-t, and a managers'key for actuating the master-tumblers'- to move the plate. 19.1211' a changeable key lock, a bolt, separately` organized lmaster tumblers and locking tumblersboth of whichar'e set to retract the bolina.v plate for resetting the lock- 'f ing -tu1nblers, an eccentric actuatingV the plate, a gua-rds key 'for' actuating the master-tumblersl,ra key ffor actuatingv the locking-tumblers to position forr` withdrawing the bolt," and'a-inanagers kkey, for? actuating the iniaster-tumb'lers to move the eccentric `toV actuate the plate'. y

20. ln a lock, the combination vwith a bolt and a `locking dog therefor, tumble'rs 'adapted to be moved to permit the release of the dog', a carrier* onfwhichy the tumblers are mounted, key operated gears 'for turning 'the tum-biere, a camfor" sliding the carrier, and guards tumblers adapted to be moved into predetermined vposition to permit-of movement of the cam;

21; In a lock, Ithe combination with a bolt and ay locking dog therefor, rotatable .tuniylolers' adapted to vbe moved vinto"predeterdog, a sliding plate provided with a post on which the tumblers are pivoted, key operated gears for turning the tumblers, a pair of cams having a pinion, a gear meshing with the pinion, and a plurality of guards tumblers to prevent movement of the cams, whereby when the guards tumblers are in register in one position and the gear is turned the sliding plate will be moved by one of the cams to disengage the tumblers carried thereby from the gears to reset the lock and when in another position and the gear is turned the dog is released by-the other cam.

22. In a lock, the combination with a bolt and a looking dog therefor, of a plurality of tumblers adapted to be moved into predetermined position to permit the release of the looking dog, gears for turning the tumblers, such gears having normally alined key openings one wall of which is straight while the other wall is stepped to ooperate with the bits of the key associated therewith.

28. In a look, the combination with a bolt and a locking dog therefor, tumblers adapted to be moved into a position of register to permit the release of the dog, frietionally held gears for turning the tumblers, such gears having normally alined key openings, each having one wall straight and substantially radial and the other stepped, and a key having a single bit to engage the straight walls to aline the openings.

24. In a lock, the Combination with a plurality of tumblers each having axial toothed opening provided with a recess and a guide post having a stud, of a key eonsisting of a shell having a pinion at its end, such pinion having a longitudinal slot for the stud and a tooth adapted to enter the recesses of the tumblers as the key is inserted in the look.

25. In a lock, the combination with tumblers each having a central toothed opening provided with a recess, a post in the alined openings and having a stud, and a toothed key adapted to the tumbler openings and having a tooth to enter the recess and a longitudinal slot which ooperating with the stud as the key enters the lock prevents turning of the key.

In testimony whereof I aHiX my signature in presence of two witnesses.

BRUCE BORLAND.

Witnesses:

ARTHUR B. SEIBOLD, ELIZABETH MoLiToR.

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