US2378768A

US2378768A - Combination padlock

Info

Publication number: US2378768A
Application number: US511903A
Authority: US
Inventors: Frederic K Heyer
Original assignee: Yale and Towne Manufacturing Co
Current assignee: Yale and Towne Manufacturing Co
Priority date: 1943-11-27
Filing date: 1943-11-27
Publication date: 1945-06-19
Anticipated expiration: 1962-06-19

Description

June 19, 1945. F7 Q Y 2,378,768

COMBINATION PADLOCK Filed Nov. 27 1945 4 Sheets-Sheet 1 l i I INVENTOR Eff. Ha /e!- ATTORNEY June 19, 1945. F. K. HEYER 2,378,763

' COMBiNATION PADLOCK Filed Nov. 27, 1943 4 Sheets-Sheet 2 INVENTOIR F/K Hg gr- ATTO'RNEY June 19, 1945. HEYER 2,378,768

COMBINATION PADLOCK Filed Nov. 2'7 1943 4 Sheets-Sheet 3 F Ta l x MIIIIIIIIIIIIII Y If INVENTdR F/f Hyzr BY m 35 J4 N June 19, 1945.

F. K. HEYER 2,378,768

COMBINATION PADLOCK Filed Nov. 27, 1943 4 Sheets-s t 4 MTIIIIIIIIIIW v INVE V OR Patented June 19, 1945 STATES 1 COMBINATION PA'DLooK *Frederic K. Heyer; lstamfor d Conm, assigno'r to The Yale & Towne Manufacturing Company, Stamford, Conn a corporation of Connecticut ApblicationNovember2'7,1943, Serial No. 51130-3 26-Clairns.

This 'invention relates to padlocks and more particularly to padlocks of the combination turnblertype. Even more particularly, my invention relates to combination p adlocks in which the lockingmechanism mayhegactuated under the h control of a key as well as through the combina As "one featurelof my invention, I utilize a novel form of fence and bolt combination with thefence being movable by the combination tumblers for'rotating the bolts As a further feaq ture of thejinventionytheboltis rotatable under the control of a keyindependently of the com bination tumbers; and preferably independently of the'fencel i y r A: still further; featureof my invention "resides in the means for controllingthe fence, andfor effecting its movementto disperse the combina tionbf the tumblers.

I have' thu's described the more important tea the fenceand boltfrelatiilely to the shackle.

Referringnowinore particularly to the draw? ings, andfespeciallyFigures 2 and 3,the casing f n of my padlockis designated generally by reference n an S aCKIe byreference numeral? I I. Thedialoftlie padlock which inmy inyen tion preferably carries the numerals of the oom-=1 bina tion, is designatedmy reference numeral l2,

I The construction of the dialis riotpart of my inventiontand is Well illustrated "in the Braumng turesfof myinvention in orderthat my contribution to the artmay be more readily-under ,stood.=There arecertain additional features of myinve'ntion that will be better understood after f a reading of 'thespecification that follows, I

shallof course lay claim to those additional feaguriesin addiitonto the features hereinafter set orhf e y Referring now to the drawings, Fig.1 is a perspective view of a padlock embody lngmy invention and showing ashackle in locked'position and also in released position,nthe

released position being-illustrated i dash and dotted lines;

Fig.3 is a View of the back of the dial assembly."

section through the padlock ely sections alone 1 Figqfi is a view similar to Fig.. 5' illustrating the rotation of the bolt by the tumblers,

ingthe action of the'disperser.

Fig. '7 is a'view'of the parts of Fig.16 illustrat 45 2 but showing the parts when the fence has movedin'td the i'lumblerg'atings.

Figsl9 and 10fare views similar to'Fig; a show ing'the partsin different positions.

FigYll is a view similarto Fig; 5 but illus? trating the key rotation of, thebolt to release po- Fig. 12 is a perspective view of the bolt and] fence in assembledrelation.

lEatent No. 2,150,660 of April 1a, 1939. Y

-Fo1gthe urposes of my invention it is merely necessary to indicatethata keyplug I3 is mounts ed within the"dial l2fand is normally locked for rotation therewitlihy a series'of tumblers that are not shown."When* thekey plug l3 ro tateswith the dia1| 2, thisrotation i free tively'to a clutch member'M that is inkeyed relatively to o the dial I 2, the dial is locked or clutched to the clutch member l 4; for -rotating that clutchmember and the b olt jll. Un clerthe circumstances justdescribed, the dial-1 l2 and the bolt I! will ofcourse rotate-as a, single unit, It, is thus apparent"thatwhereas{the dial l2'nor-;

mally rotates freely 1 of the bolt l 1, it may 'be coupled to the bolt IT at willforl rotating that bolt. 1

Rotatable with the dial l 2 is a tumbler operat ing member from which extends a pin 2| as best shown "in Fig, 3. The pin 2! fits into-thew" gating 22 of the uppermost tumbler of the series of tumblers 23, and thereby rotates the tumblers to align theirgatings,*all as will be appreciated by those skilled in the art: The tumbler operating member20 is itself formedwith a gating. 24, this gating being used in the samemanneras are the gatings22 of the'several tumblers23fif The tumblers "23 are carried-by amounting member 25 that fitsaboutthe post l6 oftheloolt I1 'anclis heldagainstrotationon the postby an arm 2fiextendingtherefrom; The arm 26 is adapted to fit into a slot 21 of whatl term the base member28 ofthepadlock. It is of course obviousthatthe tumblers' are adapted. to rotate aboutjthe mounting 'member25and m have thein the 1 usual manner well f known in theart upon rotation of the dial l2 and its operating member 211.

on which j l i td. the disperser and a control l Figsi; 141 and1 5 f i1lnstrate t e relationship or by a sheet metal scalp 38 that also holds in position a front plate 3|. Lying against the base plate 29, and between it and the base member 28, is what I term a back plate 32, probably best shown in perspective in Fig. 13. The back plate 5 32 carries a control lug 33 and. a disperser 34. The disperser 34 is pivoted through the pin 35 relatively to the back plate 32 as is probably best illustrated in Figs. Zand 8. Through a spring 36 the disperser 34 is urged in a clockwise direction in Figs. 6, 7, 11 and 13 and in a counterclockwise direction in Figs. 8, 9 and 10. The back plate 32 is of course held against rotation and for all intents and purposes may be considered an integral part of the base plate 29 and. the base member 28. I The bolt I! of my lock on which is formed the post I6, is best illustrated in Figs. '12, 14 and 15.

There it will be noted thatthe bolt I1 is formed with a. flange 48 that extends laterally from the circular plate portion 4| of the bolt. The post |6 extends through the plate 4| of the bolt and. A outwardly at 42 in the form of a slotted pin. The pin 42 is adapted to be inserted through the bore 43 of the back plate 32-as probably best shown in Fig. 2, and a torsion spring 44 is adapted to have one end thereof fitted into the slot-42a of the pin 42, while its other end is secured to a pin 45 forming an integral part of the back'plate 32.

It is the function of the spring 44 to-rotate the of Fig; 15 against the pressure of spring 44, the

shackle is released for outward movement. This. outward movement is imparted to the shackle,

as best shown in- Fig. 4, by a spring pressed plunger 48 urged outwardly by the spring 49 and limited in its outward movement by a pin 58 moving in a slot 5| of the plunger. The outward movement of the shackle II is limited by a pin 52 fitting in a slot 53 in one leg of the shackle and adapted to impinge against the shoulder 54 of the said leg, all as will be well understood by those skilled in the art. I

The plate portion M of the bolt I1 is formed withan arcuate slot 55 terminating in a transverse slot 56. It is formed with a further ratherarcuate slot 5'1, the form of which is made com-' plex by an extension 58 that is an integral part of the'plate portion 4| of the bolt l1. As illustrated in Figs. l2, l4 and 15, a fence 68 is adapted 5 for sliding and rotary motion relatively to the bolt I1, and is held against the inside surface 1 of the plate 4| of the bolt II by a retainer ring 6| notched at 62. The fence 60 has a small substantially ellipticalform of central opening 63 cooperating with a disc-like extension 64 of the 60 plate 4| of the bolt whereby it is guided forrotary and sliding motion relatively to the bolt, all as illustrated in Figs. 14 and 15.

The-back of the fence 66 carries a fixed pin 65 thatis adapted to fit in the arcuate slot and in the transverse extension 56 thereof. The fence 69 is further equipped with a disperser lug 66 that is adapted to ride in the complex slot 51 formed in the bolt plate 4|. In the assembly of the parts, the back plate 32, as was indicated earlier, forms an integral part, in effect, of the padlock casing. The bolt I! is applied to the backplate 32 with the lug 33 of the back plate entering the arouate slot 55 and assuming the 75.

tumbler operator 2!].

tation of. the fence. fenceis prevented through the disperser lug 66 abutting the disperser 34. Therefore, it may be.

position relatively to the fence and pin 65 that is illustrated in Fig; 5. Simultaneously, the disperser 34 enters the complex slot 5! and assumes the position illustrated in Fig, 5.

The fence 6|] is formed with a fence post 68 adapted for entry into the several gatings 22 of the tumblers and also into the gating 24 of the The fence post 68 has pressing thereagainst a leaf spring 69 secured at 16 to the base member 28. It is of course readily perceived from Fig. 4, that the leaf spring 69 will continuously urge the fence post 68 towards the tumbler gatings and thereby will urge the fence upwardly from its position of Figs. 4 and 12, that being the position of the parts when the shackle is locked and the fence post 68 is against the tumbler peripheries. In Fig. 8, I show the parts of Fig. 12 when the fence post 68 is in the aligned gatings of the tumblers;

I shall now describe the operation of my invention. With the parts in the position of Figs.

4 and 5, the shackle is of course locked because the bolt I is in that relation to the shackle illustrated in .Fig. 14. It is obvious also that the fence 68' is held against rotation. Thus, the pin 65 of the fence is against the lug 33 of the back plate 32 thereby preventing counter-clockwise ro- Clockwise rotation of the said that when the fence is in its locked position relatively to thetumblers, it is prevented from rotating b the lug 33 and the disperser 34 secured on the fixed back plate 32.

However, the complex slot 51 of the plate portion 4| of the bolt I! will be so disposed relatively. to the disperser 34 and the disperser lug 66 as to permit rotation of thebolt relatively to those parts. Similarly, the arcuate slot 55 is in such relation to the lug 33 and 'the pin of the fence 60 as to allow rotation of-the bolt I! rela- .tivelyto those parts.

Therefore, with the elements of the lock inthe position of Figs. 4 and 5, operation of the'key plug 3 for clutching the dial |2 to the bolt post 6 will allow integral rotation of the dial l2 and the bolt I! from the position of Fig. 5 against the pressure-of the torsion 1,

spring 44. This key controlled rotation is well illustrated in Fig. 11. In that figure it will be noted that the bolt has rotated to its position .of Fig. 15 relatively to the shackle thereby releasing theshackle. The slots 55 and 51 are now positioned in approximatelylimit relation to the lug 33 of the back plate 32 and the disperser lug .66 of the fence 66, thereby limiting the. rotation of the bolt II. It will be seen that there has been absolutely no rotation of the fence 60 and that all movement of the bolt. IT has been independent of the tumblers.

With the parts in the position of'Figs. 4 as 5, should it be desired torelease the shackle through the medium of-the combination tumblers 23, the dial 2 will be operated to position the operator 20 and tumblers 23 with their gatings opposite the fence post 68. The fence will then move under the influence of the spring 69 to bring the pin into the upper portion of the transverse slot 56 of the bolt plate 4|. Simultaneously, the disperser lug 66 will be carried opposite the surface58aof the part 58 of the bolt and away from abutting relation to the end of the disperser 34. This is the position of the parts in Fig. 8.-

It is obvious, that rotation of the tumblers will now effect the rotation ofthe fence 60; The fence of my invention will now tumbler gatings allowing free 1 bolt relatively thereto. i

2. In a look of the class described, a rotatable bolt, apost extending from said bolt in its axis 60 will of course rotate with the bolt through the action of the pin 65 lying in the .endflof the transverse slot 56. The parts will through rotation reach their releaseposition of Figs, 6 and 9, at whichpoint the bolt I! is in that relation to the shackle that is illustrated in Fig. 15. f It will be noted that in these figures the end of the slot 55 has movedv opposite thelug 33 extending from theback plate .32; *Itwill also be noted that in this position of i the parts the" disperser lug 66 has moved beyond the 1 disperser 34, it being apparent that while moving. to theposition of Fig. 6 the disperser lug depressed the disperser 34 against the pressure of its spring 36. Figr 9,il1- lustrates the back-of Fig.1 6 1 and shows quite clearly the relation between 1 the disperser "lug 6B and the disperser 34. The parts will be held in theposition of Figs. 6 and-9 by the longer shackle leg lying within the scallopedportion 41 of the,

bolt flange 40. The bolt rotating spring ,44 will of course tend to rotatethe parts back to the bolt,a-series ofrotatabletumblershaving gatings,

meanslfor rotatingsaid tumblersto align said gatings. a fence adapted to entersaid gatings when they are aligned, and meanswherebyqsaid fence when insaid gatings is locked .fortrotation with said bolt, said fence when out of said gatings being free of said bolt whereby Lsaid bolt is then position of Fig; but will be held against such action by the shackle;

When theshackleis re-inserted into the pad- "lock casing, thebolt I! will be rotatedby the spring 44 from the position ofFigsfi and 9 toward the position of Figs. 7 and 10. Glancing now at Fig. which shows the back of the boltwhen the parts arein the position of Fig. 7,the disperser lug 66 is nowbelow the disperser 34 being moved to that position against the pressure of the fence spring 65; In the position of the parts in Figs. 7 and 10, the fence post 68 hasof course moved out ofthe tumbler gatings and thereafter the fence 6|] rotates with th bolt I! beyond the position of Figs. 7 and lO relatively tothe bolt to said fencewhen said fence is moved to release position through the alignment; ofthe gat ings of said tumblers, said fence when out of said rotation of said +4. Inalockof the class described, arotatable rotatable independently ofsaiclfen'ce. i

In alock of {thefclass described, rotatable bolt, a spring pressing said bolt intoa locking position, a series of rotatable 1 tumblers having gatings, means for rotating said tumblers to align said gatings, a,fence spring pressed toward said gatings whereby to enter said gatings when they are aligned, and means whereby said fence when in said gatings is locked for,rotation withsaid bolt, said fence whenout of;said gatings being free of, said bolt whereby said bolt is then rotatableindependently (of saidfence and against the pressure ofsaid bolttpressing spring. i i

(6. In-alock of the class described, a rotatable bolt, a spring pressingsaidbolt intoalocking position, a series, of rotatable, tumblers having gatings, means for rotating said tumblers to align said gatings, a fence spring, pressed towardsaid gatingswherebyto entersaid gatings when they are aligned, means whereby said fence when in said gatings is locked for rotation with said ,bolt,

and means for lockingisaid fence against rotation when it is ositioned out of said gatings, said fence when out of saidrgatings being free of said bolt whereby said bolt is then rotatableindependtumblers, effectively dispersing the combination. i Naturally, when theparts reachthe position of Fig. 5 the fence returns again to itslocked relation as determined by the lug 33 and the disperser ,34, as well as by the peripheries of the tumblers.

ently of saidfencetand against ,the pressure of said bolt pressingspring. w 1

7; In a lock of'the classjdescribed, a rotatable bolt, a post extending from said bolt in its axis of rotation, a series oftumblers mounted ferrotation about said post and having gatings, means for rotating said tumblers, a-fencexmounted for i sliding movement relatively to said bolt into and out of said gatings, meanslocking said bolt to said fence when said fence ismoved to release position through the alignment of the gatings of said tumblers, said fence when out-of said tumbler gatings allowing free rotationof said bolt relatively thereto, and means for locking said fence against rotation when itjis positioned out of said gatings. i

8. In a lock of the elass described, a rotatable :bOl'G, aseries of rotatable tumblers having gatings,

ofrotation,a series of tumblers mounted for r0- tation aboutsaid post, a knob for'rotating said tumblers, a fence mounted for sliding'and rotary movement relativeto said bolt, and mean lock ing said bolt to said fence when said fence" is,

moved to release position th'rough the alignment of thegatings of said tumblers. t

3. In a lockof the class described, a rotatable bolt, aseriesof rotatable tumblers having gat ings means for rotating said tumblers to align saidgatings, .a fence spring pressed toward said gatings whereby to enter said gatings whenthey are; aligned, and means whereby said fence when insaid gatings is locked forrotationwith said bolt, said fence when outof said gatings being free; of said bolt whereby said bolt is then tatable independentlyof said fence. w

lbOlt, a series of tumblers-formed with gatings' and i tumblers and is outside the tumbler gatings, said means releasing said fence for rotation up:

means for rotatingsaid tumblers to align said gatings, a fence spring pressed toward said gatings whereby to enter said gatings when they are aligned, means whereby said fence, when in said gatings is locked for rotation with said bolt, said fence when out of said gatingsybeing free of. said bolt whereby said bolt is then rotatable independ ently'of saidfence, and means for locking said fence against rotation when it is positioned out of saidgatings I i 9. In alockof the class-described, a rotatable rotatable in the axis of rotation of, said bolt, means for'rotating said tumblers, a fence mount ed for rotationfabout said axis and for sliding motion relatively thereto and saidbolt, a spring pressing saidfencejtoward said tumbler, gatings,

means deadlocking said fence against rotation when it is-pressed against the peripheries of said on its movement into said tumbler gatings, and meansfllocking-said fenceto said bolt when said fence is in said tumbler gatings.

10.'In a lock of the class described, a rotatable bolt, a post extending in the axis'of rotation of said lbOlt, a series of tumblers formed with gatings and rotatable about said post, means for rotating said tumblers, a fence mounted for rotation about said post and for sliding motion relatively thereto and said bolt, a sp rin'g pressing said fence toward said tumbler gatings, means deadpost, means for rotating said tumblers, a fence mounted for rotation about said post and for sliding motion relatively thereto and said bolt, a spring pressing said fence toward said tumbler gatings, means deadlocking said fence against rotation when it'is pressed against the pev ripheries of said tumblersand is outside the tumbler gatings, said means releasing said fence for rotation upon its movement into said tumbler gatings, and means locking said fence to said bolt when said fence is in said tumbler gatings,

12. In a lock ofthe class described, a series, of tumblers, a fence adapted to enter gatings formed in said tumblers, a spring pressing said fence into said gatings when said tumblers are aligned,

means mounting said fence for rotation with said tumblers and for sliding movement relatively thereto into and out of said tumbler gatings, a pivoted disperser spring pressed into the path of said fence and rotatable out of the path of said fence by said fence as said fence rotates with said tumblers in one direction beyond said disperser, the return movement of said fence effecting contact of said fence with saiddisperser tending to rotate said disperser in a direction in which it resists rotation and thereby moves said fence out of the tumbler gatings.

13. In a lock of the class described, a series of tumblers, a fence adapted to enter gatings formed in saidtumblers, a spring pressing said fence into said gatings when said tumblers are aligned, means mounting said fence for rotation with said tumblers and for sliding movement relatively thereto into and out of said tumbler gatings, a disperser positioned with a portion thereofin blocking relation to said fence when said fence is outside said tumbler gatings for preventing rotation of said fence, said fence moving beyond said disperser portionwhen in said tumbler gatings whereby to be rotatable thereafter past said' disperser, said fence impinging against a further portion of said disperser as it rotates with said tumblers for depressing said portion, the return movement of said fence effecting contact of said fence with said disperser tending to move said' disperser in a direction in which itresists movement and'thereby moves said fence out of the tumbler gatings.

14. In a lock of the class described, a series of tumblers, a fence adapted to enter gatings formed in said tumblers, a spring pressing said fence into' said gatings when said tumblers are aligned, means mounting said fence for rotation with said tumblers and for'movement relatively thereto into and out of said tumbler gatings, and a disperser positioned with a'portion thereof in blocking'relation' to said fence when said'fen'c'e is outside said tumbler gatings for preventing rotation'of said fence, said fence moving beyond said disperser portion when in said tumbler gatings whereby to be rotatable thereaifterxpalst said disperser. V

15. In a lock of the class described, a'series of tumblers, a fence adapted to enter gatings formed in said tumblers, a spring pressing said fence into said gatings when said tumblers are aligned, meansm'ounting said fence for-rotation with said tumblers and formovement relatively thereto 'into and out of said tumbler gatings, and a disperser positioned'with a portion thereof in blockingrelation tosaid fence when-said fence is outside said tumbler gatings for preventing rotation of said fence, said fence moving, beyond said disperser portion when in said tumbler gatings whereby to be rotatable thereafter past said disperser, and means whereby said disperser moves said fence out of said gatings when said fence moves relatively to said disperser.

16. In a lock of the class described, a rotatable bolt, a post extending from said bolt in its axis of rotation, a series of tumblers mounted for rotation about said post, a dial. forrotating said tumblers, a fence mounted for movement relatively to said bolt, means locking said bolt to said fence when said fence is moved to release position through the alignment of the gatings of said tumblers, said fence when out of said tumbler gating allowing free rotation of said bolt relatively thereto, and key operated means for controlling the rotation of said bolt when said fence is out of said tumbler gatings.

17. In a lock of the class described, a rotatable bolt, a post extending from said bolt in its axis of rotation, a series of tumblers mounted for rotation about said post, a dial for rotating said tumblers, a fence mounted for movement relatively to said bolt, means locking said bolt to'said fence when said fence is moved to release position through the alignment of the gatings of said tumblers, said fence when out of said tumbler gating allowing free rotation of said bolt rela-' tively thereto, and key operated means for coupling said bolt to said dial for rotation by said dial when I said fence is out of said tumbler gatings. I r s t 18. In a lock of the class described, a rotatable bolt, a seriesof, rotatable tumblers having gatings, a dial for rotating said tumblers to -align said gatings, a fence adapted to enter said'gatings when they are aligned, means whereby said fence when in said gatings is locked for rotation with said bolt, said fence whenout of said gatings being free of, said bolt whereby said bolt is then rotatable independently of said fence, and key operated means for controlling the rotation of said bolt when said fence is outof'said tumbler gatings. I

19. In a lock of the classdescribed, a rotatable bolt, a series of rotatable tumblers having gatings, adial for rotating said tumblers to align said gatings, a fence adapted toenter said'gatings when they are aligned, means whereby said fence when in said gatings is locked for rotation with said bolt, said fence when out of said gatings being free of said bolt whereby said bolt is then rotatable independently of said fence, and key operated means for coupling'said bolt to said dial for rotation by said dial when said fence is out of said tumbler gatings.

v 20. In a lock of the class described, a rotatable bolt, a post extending from said bolt in its axis of rotation, a series of tumblers mounted for rotation about said post and having gatings, a dial for rotating said tumblers,-a fence mounted for movement relatively to said bolt into and out of said gatings, means locking said bolt to said fence when said fence is moved to release position through the aligmnent of the gatings of said tumblers, said fence when out of said tumbler gatings allowing free rotation of said bolt relatively thereto, means for locking said fence against rotation when it is positioned out of said gatings,

and key operated means for coupling said bolt to said dial for rotation by said dial when said fence is out of said tumbler gatings.

21. In a lock of the class described, a rotatable bolt, post extendingfrom said bolt in the axis of rotation of said bolt, a series of tumblers formed with gatings and rotatable about said post, a dial for rotating said tumblers, a fence mounted for rotation about said post and for sliding motion relatively thereto and said bolt, 2, spring pressing said fence toward said tumbler gatings, means deadlocking said fence against rotation when it is pressed against the peripheries of said tumblers and is outside the tumbler gatings while leaving said bolt free for rotation, said means releasing spring as said fence rotates with said tumblers in,

one direction beyond said disperser, the return movement of said fence effecting contact of said fence with a cam surface of said disperser tending to move said disperser in a direction in which it resists movement and thereby moves said fence I out of the tumbler gatings. I

24. In a lock of the class described, a cylindrical casing, a shackle having legs slidable relatively to said casing, a bolt rotatable in said casing about I an axis central of said casing, a part of said bolt adapted to lock said shackle, a post extending from said bolt in its axis of rotation, and a torsion spring secured between said post and casing for rotating said bolt into its locked position.

25. In a lock of the class described, a casing, a

' shackle slidable in said casing,,a bolt rotatable in said fence for rotation upon its movement into I said tumbler gatings, means locking said fence to said bolt when said fence is in said tumbler gatings, and key operated means for coupling said bolt to said dial for rotation by said dial. when said fence is out of said tumbler gatings,

- 22. In a lock of the class decribed, a cylindrical casing, a shackle having legs slidable relatively to said casing, a bolt rotatable in said casing about an axis central of said casing, a post extending from said bolt inits axis of rotation, and a torsion spring secured-between said post and casving for rotating said bolt into its locked position.

23. In a lock of the class described, a series of tumblers, a fence adapted to enter gatings formed in said tumblers, a spring pressing said fence into said gatings when said tumblers are aligned,

means mounting said fence for rotation with said tumblers and for movement relatively thereto into and out ofsaid tumbler gatings, a movable disperser spring pressed into the path of said fence and movable out of the path of said fence by said fence against the pressure of the disperser said casing for locking said shackle, a spring press ing said bolt into a locking position, a series of rotatable tumblers having gatingsga knob for rotating said tumblers to align said gatings, a fence spring pressed toward said gatings whereby to enter said gatings when they are aligned, means whereby said fence when in said gatings is locked for rotation with said bolt, means on said casing for locking said fence against rotation when said fence is positioned out of said gatings, said fence when in said gatings rotating with said tumblers and knob to move said bolt to release said shackle. 26. In a lock of the, class described, a casing, a

shackle slidable in said casing, a bolt rotatable in I said casing for locking said shackle, a spring pressing said bolt into a locking position, a series of rotatable tumblers having gatings, a knob for ro-J tating said tumblers to align said gatings, a fence spring pressed toward said gatings whereby to enter said gatings when they are aligned, means whereby said fence when in said gatings is locked for rotation with said bolt, means on said casing for locking said fence against rotation when said fence is positioned out of said gatings, said fence when in said gatings rotating with said tumblers and knob to move said bolt to release said shackle, and a portion of said fence locking means constituting a disperser for moving said fence out of said tumbler gatings as said bolt and fence move from an unlocking position back to a locking position.

'FREDERIC K. HEYER.