US2325310A - Lock - Google Patents

Description

July 27, i943. L. E. DEUTSCH 2,325,310

LOCK

Filed' March 2. 193s 4' T .if 34 j f7 6 1/ 64 ATTORNEYS.

same with similar locking PatentedrJuly 27,A 1943 UNITED STTES FATENT i 2,325,310.' o fr',

l lDeutsch, Hammond, Ind.

lAp`p`1ieiiiieii Marcha, 1939', seriaiiNo. 259,336

This invention relates inl general to locks, and more particularly Vtoadjustable,y key operated tumbler locks; and constitutes'animprovement in the type of'lock disclosediin my prior'United 'States Letters Patent No. 2,019,31199,Vv October 29,

1935; No. 2,`021,433, Nevemberig; y1935; .NQ 2,024,030, December 10,1935; ndiNa. 2,060,978 November-l7,'1936. ,e I

A principal object of the invention-is-the provision of an adjustable, key operated-lock havl0 ing unitary locking actuators, instead of the twopart, relatively adjustable tumblers and actua'' tors of the locks of ymy prior patents above enumerated. Y

Another important 'object of the invention is I 1'5 the provision of such a lock in which the Combination set therein may-be readily changed'by merely repositioning some ori all of the several locking actuators employed,'or by replacing'- the ferent characteristics..v`

A further important object ofthe inventionI is the provision of such a key operated lock having a carrier for the locking actuators which may tion of a key having the proper combination set therein to facilitatefthey setting of 'ai different combination in the lock by removaland subsequent repositioning or replacement'of thelockingr actuators in the carrier.

Another important object o f the iin/"entionV is the provision in such a lock of anfauxiliary locking means to prevent unauthorized removal of the carrierA from the casing, which is rendered operable to permit removal of thefc'arrier from l` thev casing only W`hen a Vparticular `Vkey isus'e'dv in the lock, said auxiliary locking means remaining inoperable when any other key is inserted into the lock, even though the-combinationof the latter key is correctly set to enable it to/4o operate the look. v v u A further and very'important object of the," in vention is the provision of a'4 substantially -rpick- -proof lock, i. e. a lock ywhich it is substantially. impossible to open except by a key having the actuators therein set to the saine'` combination' as that to which the locking actuators ,ofjthe' lock` are set. f l 1 j Another object of Athe inventionisthe provi-` operation, and cheap When taken' in connection 'vvit-hf t f embodying the features ofA m'y y invention substantially on I ccompanying drawing, discloses a preferred mbodirnent Fig; 4 is' a transve se', `vertical'-secti-ontaken locking actuators in place; l f Eig. 5 is a transverse ysectional View i `ken sublook embodying' ,the features/of rny invention Whichffis villuStrated" therein comprises `an outer casingv member-indicated generallyby reference numeral I I, acarr'i'erfindicatedfgenerally by refn "ere'nce numeral I2;'which"ijsfadaptedjto beV v'robe removed` from its supporting casing by opera' 2%' tat'ably mounted' Within-"the `casing :"II; afron't fpieiel's'end muere 'piugj 'rjpiate'rneiiiber i4 -"slidably mounted'forlongitudinal movement relative tothe 'carrier IZ'an'dthe-front plate'rI 3 vTheA casingr`v yI I is cylindrical *inl s'hape'an'dis am' inder lockf-to 'facilitate yinsertion' tl'ireofinto a dimensioned-exteriorly 7 similarly'to f theusual cyl- ,suitable aperture in a-deererfihe iiie-iiieteheim) stood from. the'ioiiowirig description," which/t5 '('Ei'gs.*2, 3' and 5) Vfoi-fthe accommodation carrier |2. The 'bore' ,ls is 'enlarged f ibored -for a relativelyshort-distance Aat-its-forward end atl I6 to'l I'"rbs" 23, 24,-"and 25.2' AQ grooves (shown herein .fbx-cached orfotherwiselctlthrou the'nn4 Apsion of such a lock Which'is extremely simpleinA i0A construction, eincient in "to manufacture.

in anyuesi'redmanneri The raising-fill'is provided ',iiit'e'rieriy 'with e longitudinally tore" |75 or i counteraccommodate vthe freni r"pleite fl a.

The bore I5 is also enlargedforfa shortdistance `intermediate its ends to provide'acircumferential channel I'I (Figs. 2, Bfand 4i)- fo'r'a purposeftofbe later described. Similarly, the bore fVISv isfen- 4largedat spaced intervals tothe `'rear o'f the channel- I1 to provide narrow channelsljlls, 2'I`fiand 22- (Figs. 2A and 3) Which-define circumferential tion of theicasing -I I 'eachV ofwhich i lock einem pletely threes-h .the reark memh I:leere 4,3 .ofthe menherelel arefaldehly d .within the Severalsleeves` 2 fr L rower than the grooves 26 and slightly Wider than the grooves 21, and together with the grooves 25,

21, are evenly spaced about the inner periphery of the casing II. The several grooves 26, 21 and 28' extend longitudinally through the casing I I from the inner end of the enlarged portion IB of the bore (Fig. 3).

The carrier I2 is made up of three separate parts, comprising a main part 3| which is in the form of a hollow cylinder, a. centrally disposed plug 32, and a rearpart 33 which is also in the form 'of a hollow cylinder. The outer diameter of the two parts 3| and 33 is very slightly less Y than the inner diameter of the bore |5 in the casing I I. The inner diameters of the two members 3| and 33 are substantially the same as the outer diameter of the member 32.

v,carrier I2 in radial alinement with the grooves 31 and 38 in the member 3|. The forward end of each of the recesses 46 is reduced in diameter to provide asuitable shoulder against which. the

As's shown best in Figs. 4 and 5, the center member or plug 32 is provided with a pair of diametrically opposed, longitudinally extending anges of differ-- eht .width which are adapted to engage-.suitable 'longitudinally grooves providedin. each of the end members 3| and 33. 'Ihegcentral member 32 extends less than half .the Wayinto the. rear. endet the main member-.3|- and com- @332 :miv Sen .any suitable cured to the imain member 3| manner. .such asbv. a' driven. nin.. 34 (Fig. y2.) extendinethreughaeuiteble eeeneratine apertures in. themernleers 3l. and 32.-. 4The rearmember 33 is removably Segured to the; 1 )lug32 by means of e .screw Slime-...Error .ape-mcse te.` be later more fully explained-u l f The outer periphery of the 1main member .3| et .theeerrier l2 ieprevided -witha peiref diemetrieallv. ermee@ .lilas ltwleh are of slightly shorter .length-than the Width of. the .channel I1 provided inthe .easing IIAF'is` .2) andere adapted te .be .pesitiehed .ihalihemeht with Lthis chenne1 Whentheeerrier, i2 is .preperlvfpeeitiened vvthri the .testes eszehewh 'in the .dmv/ine.

,The less 3S. Merisier thanthegroever. .28. in the easing Il. (Ela. 4), ,-l'rt :are ,eumeiehtly narrow to hermit -eliencignereer -ieheitudmeuy er the ,Qas- .ins through ehr 01. the. sleeves 2l, These lugs 3'6 'fnetienjte prevent y1.eriaitudin.,el movement 0f the carrier-l2 relativetothe casing. II when the lugfle iteleelsed -reetlehi ais-shown in. v,the aree:-

.iha fer aimreeefteheleter ,more fully deSeribed. r vThe mem member.- 3l efr th ...eeerrier l2 Y' vi Vrelatienehir areurldfits meouter periphery with le yphireltvefV radially .ciiepeeed electives 13:1. 4). vvhehere spaced.; te-coincide with. the geeves 6, '21 the easingv H -vvheh the .carrier is. .disposed .-thereirrfin ite -leeleed peeitien -efl the drewihef.- .The hherpertieh. `of the membevil eieprevidedewith sa pluraltyef creumterf entie'lly epeeed. grooves/138. whehare smaller than vtheareeves.= `.i and etere Jelly alined therewith. 1 The crimes 3.8 ere. lprefeimbly breached in. the. irielneher l. While the .Outer eentleureten or the l member 3.1.; ineludihg. .the ereeves 3T and the lugs, may bechteined by using-.Steele which-1S extruded to such .shane-` l'l'he ,grooves '31. 38 yihthe math. member 3l lockingactuators 4| .-(li'igs. Sandi). kof the leellref .eetiteters 4l campuses a unitary. ,mem-

, herehavins threeparts; amain ortumhler part-,4.2 e ff.ervvardly.teilten.dirleles1 yer actuating vpart .4.3.

end e ,rearwardly extending les 4.4. .-'I'he etuetor ispeeed hthermainfmemher 3| vrer therapies! 2. tumbler-part 522.gif

be secured in any Idesired manner.

head'portion of a plug 41 is adapted to engage. One of '.the'se plugs 41 is disposed in each of the recesses 46`andis provided with a reduced rear endp'ortion which slidably engages the interior Q fth'e associated spring.l Afterthe several springs-45 and plugs `4 1 have been assembled in k,the .rearmernber 33 tl i e rear-ends of the apertures` 4B are-.closed by rigidly securinga. plate .4Q (Eis. .3). tof-the rear..` end-0f. themember 33 in env' euitablemahner- Therearleesu of the several locking actuators 4| engage the forward surfaces of the heads of the several plugs 41..

It be noted inpassing-that the central `1r1ernbe1y32 ofthecarrier |2y extends rearwardly bevond the plete; 4t, and.. itis te this portieri ofthe member 32 that the usualthrowbar may The main or tumbler portion 42 of each `of the vlocking actuators 4I is provided adjacent its `iiinction with `.the legs 43 and v44 with. an out- -wardly `e xtending.protuberance 5| (Fig. 3) 4which is narrower than the remaining part 0f the tumbler. .member 42 ('FigQlL fl'hev width .of this .protuberance 5| is very 'slightly less than the width-of the associated grooves 2 1. in the casing :I I., andfitiunctionsas an auxiliary locking lug a apner to be 4more fully described hereinafter. Q

. Each .of .the locking actuars 4| is provided at the forward end of its tumbler portion `42 with an -pp ,virarlly extending main locking lug 527. The

v1i 1gs`52 are of the same width or thickness as the main lportion of the tumbler part 42 Fig., k4)

and arev of slightly less length 'than the lwidth ,of thechannel I1 in thecasirig (Fig. 3). As

willr be noted in Fig. f3, the-:different locking ac tuators 4| #have their .tumbler portionsl 42 of Y.d ififerent lengths.A For example, the upper mem- ..b.er 4.| in Fig. 3 is` shown as ,beingof maximum v length, while the'lower member 4| isof mini- '.mllln, length) Others of the members V4| may have their tumbler .portions 4 2 of any selected diierent lengths between these twolimits. The purpose ,of `employing lockingactuators having tumbler portions of different llengths wilibe more fully describedhereinafter.v

As .has 'beendescribedabove the front plate '|'3 is rotatably mountedupon the carrier I2. :Thisisy accomplished yby providing` an enlarged bore-or recess, in the front A.plate 3 which extends forwardly. therethrough to within a `shorthdisytance of the front end thereof and is so shaped .as te slidably and Yrotatably engage the forward end Aof the -main member 3| Eof the carrier I2.

.fljhe'forward end `ofmythlis bore-.in the front plate `|3 is reduced to provide a limitedV shoulder orv stopportion (Figs. 2 and 3).., vThe outer. vperipheryfofzfthe main partl vof the lcarrier I2 and '15 ftheinner--Lperiphervef ,thefreht plete i3. `are -rthe center member 32-of the provided with annular vrecesses which coincide .with each other. when the -two members are in theirassembled:position of kFigs.' 2' and 3; A

splitring or spring washer 54. is disposed'with-y in these two recessesfor the purpose'of securing the members I3l and 3l together to permit relative rotation'r thereof, while preventing,relative` longitudinal. movement therebetween. -It.wil1 be appreciated that the. circumferential recess provided for this purpose in .',the 4front plate I3 is of sufficient depth to accommodatethe ring 54 when the latter is expanded, in order to facilitate .assembly of these'parts. u With the above. construction; the linnersurfaces ofthe actuator lugs f43' of the lockingac.-

tuators 4I would be-.exposed within the bore-.of -the main part 3I. ofthe. carrier..- I2. f

In `order -to protect. these actuator-lugs'43and-to prevent Vthe accumulationof dirt-and otherforeign matter inthe bore of the member 3I, .the guard plug I4 is slidably mounted therein. The plug I4. has `substantially the same cross:;sectional shape as has the center member 32 of the carrier I2(Figs.

l to 3). .Outward movement. of the guard plug I4 is limited by the shoulder53v of the front plate I3. cut away or reduced to provide a cylindrical. stop or postv 55, the rear end .of which isi shaped to slidably engage vwithin a suitable axial bore or-recess 56 provided Within the frontwenclof spring Slis mounted within this recess 56,ijn the -center member 32 for the purposeof engaging the lrear endl of the. post 55 to gresiliently .maintain the guard plug I4 in its forward position, as shown in the drawing. The front end of slightlyy upset to prevent outward movementof the-iiinf-SI relative'to the-.plata bevond its position-.ofFa 3- .The .inner end-ofthe hollow pin 6i vis .Cut-away many suitable mannery to provide an inwardly` extending legor protuberancev 66 which is adapt-1 ed tol slidably.- engage within asmall companion recess.- Il :(Fial extending-.through .the from plate .I3-,from `the inner-end of the recess 6 2 -to the n.bore of-the, plate. v position --of this protuberance 66 .on the hollow pin 16,1. .may :be varied as desired, ,providing that the vrecess 6l be disposed inradial,alinement'there- .Pat'enfNo'.-21196414br.. .key will be provided, with-bits or-actuating-memwith.; The v'purposefand y function of this.v aux- .-iliary locking in chanism will .beffurtherz de sCribedVhereinafter. --z .f The vabove -described lock is vint en1:led,to be operated by a suitably formed,ly,fsome what'simi- August 17,.

bers arranged ,tolongitudinallycoincide with the ,actuatorlugs 4 3 ofthe 1 ockingactuators4I..v

. outer dimensions of-, the key .will be r`such as yto .25 The'rear portion of theguard plug-I4 is carrier I2. .A-coil the guard plug I4 may also. be -provided with i.

a forwardly extending, axially disposedstudb for the purpose of engaging within asuitable K .recess in the forward end of a key to guide the .movements of the latter into the lock.

Withthemeehanism as above deseribeditmn f be readily apparent that the carrier I2, together with the front plate I3 and guard plug I4,.may

be moved longitudinally into and out ofthe-'casing II, as a unit, ifthe. parts are properly positioned circumferentially,.in a manner to `be later moreffully described. yMeans are vprovided.1fo1 locking the front plate I3 in its .assembled position in the.v casing II, as shown in the drawing,

to prevent any movement thereof relative to the casing. Such means, of course,`will notgpreve'nt rotation jor" .the carrier I2 relative to the front plate I3 and the casing-II. i This auxiliary locking means is provided for,

' plate I3 to within a short distance Iof-.thebore provided "in said plate. The pinIl is vprovided.

at its' outer end with a reduced portion i3-which is'v adapted to engage within va suitable laxially disposed recess 64 in theouter flange ofthe casing. II. A coil spring 65 is mounted within .the hollow portion of the pin 6I, and engages the bottom portion 'ofthe recessl62 in .the platerIS yto resiliently urge the pin 6I. outwardly relative. to the plate I3 to maintain Athe reducedrportion 63 of the pin in therecess 64. Afterthe pin. 6I

permit its. insertion through the bora-.of ithedfro'nt plate .I 3. and into. the .bere k0f the. m'al mellbr 3 I o f the carrier I 2 and a -suitable .aperture may be providedin thefrontv end jOfHthe key for engaging. thefpin 5 8.to guidethe movementof the key into-the, lock.

- In' suchlongitudinalmovernent-oithekey nto :the lock, the guard plug I4-r will beu moved' rear- -wardly y of f the; flock against the action v of A the spring. 5151i the key, actuatorsare setto the proper combination, i. -e.,"'to that-combination. to which theflocking actuators. 4 I ofthe lock are set, complete insertion of the key into thelock will move the `actuator lugs 43.pf the -lockingactu- --ators' -4;I. .-,rearwardly to position the locking lugs 40 52 vofthe.'tumbler portions 142 of the locking actuators in coincidencek with the :channel I-TI 4in the position; fthe .--key may 4then be .rotated Vto .rotate -thecarrier,-| 2 relative -togthe casing; I I and/the front plate I3. It will be noted that .suchv proper rearward? movement of the lockingz actua,tor s4I l .will result. in the lugs'5I- provided :thereonjbe'ing ...tumbler portions binations vresults.-

positioned.. in: coincidencel with .one of; the several channels or recessesy I8, I9,` 2I1or 2:2 provided in thecasing -I I.

If vanyone-of the locking `actuators Il-lis .properly moved to such passive or inactiveposiA tion; the vlocking-lug 52` on the tumbler portion 42 thereof `will. vbe iin engagement withsome portion of its' associatedgroove 26 in the casing 'I I to .prevent rotation of the carrier, I 2 relative-tothe casing. .By employing locking actuators having 42 y.of different lengths.. it, will be seenithat a very large number of possible-com- .'Itwill also be apparentthat the key actuators must necessarily be .setfto the r same combination to-which the'lockingactuators v-II ofithe lock'areset, in order that the-:carrier I2 may be rotated relative to the casing I I; .Upon lremovalr of the key' from the lock, .the springs-i5 will .return the locking actuators 4I toytheir lock- I -ing positions, ras shown inthe drawing,` springA y5I Lwill. return and spring have been assembled inthe recess 62, the marginal portion-:of theplate I 3g`surrounding the outer end of the.` recess62 may be andthe they guard 'plug I Il -to `its normalposition.

` In order to change the combination in thelocl, itisnecessary .to remove the carrier I 2 from, the

. 'casing II.. After this Ahas been accomplished, the

.- -screw 35,-y orV lwhateverl other ,retaining -meaneuis .employe-d. may be removed. orreleasdtofpermit The .circumferential f :If all of the..1.0Cking lactuators are -.thus properly moved to-.this-passive orreleased lreplaced in A *inal positions inthe-carrier, ordierent looking 'is-of material impor-tarice.r

rvgrooves 28 may .bedimensioned :diiferentlyitouacf4 Vwitlrclrxmzal lof;-the'rear member $3 of the carrier, includingl the-springs 545 which are hhousediitherein, from the center member 32. A-ll-`o`ff'-the locking actuators H arethen-ree'to'be' removedin a rearward direction from carrier; quently, these locking-*actuators 41 .-.maythen l"he diiiierent positions ffrom I A4orig.;

Vactuators 'may 'bel inserterdi therein." The @actuators Vprovided inv the keyitor operating 4the lock may then bereset to theeewcombinationin the lock. In thefabove-,describedremoval fof the rear member333mm 'center 'member 32 othe carrier 'I2 -to enable vrepi,ns'iti'oni'ng"of locking actuators 4I 1 to `set` a new-combination in the lock, Ait will be appreciated that-'the-fact'thatfthe springs' `45 cannot "fall 4vout vorfbecomeflrlisplaced n 1n orderto permit-the remet/alor ythe.carrier'112 from 'the v'casing '-Ifl, fthe" jcarrierfmustfbe rotated relative tothe lcasingby -a'fkey having 'the proper combination' sety therein; rfSuch rotation Irnust be sufcient to position`- the lugs 3E on the main =part Vv3 I of the Vcarrier 'inflongitudinal' comcidence with `a selected-'pair of diametrica'llyfopposed grooves mit sliding of tnemgs alsnieretnrough, whne the )grooves 26 are suiiiciently wilde to 'accommodate the lugs 36. In other Words, tlfielugs 'func-tionf to normally prevent `withdrawal of thefc'arrier I2 from -th`ef1casing -'II'. The' grooves "218 f-'must 'be provided,` however, to permit withdrawal :of 'the particular 'lockingactuators I-'I that are moved to coincidence therewith upon fthe 'proper 'rota-f' tion offthel carrier' to-electiwithdrawal thereof tudinallyrelativev to the easing; Itlwillbeunderstood that Ithe lugs .'36 may-bediiferently positioned than herein 'illustratedfarid that Ithe commodate both the lugs 36 and .theilockingiactuators 4I when the .lugs a're .so positioned, if desired.` v'

:In order toi-complete. tneiremoval .rof i the carrier from 'the 'casing,fhowever, itzis :necessary that the key which is beingliemployedan'dwhich has the nproper -combination set therein, Ebe provided with a recess which lwilllradialllycnincide with the recess 61 in the front lplate'l3when'therkeyhas f been Irotated the fpr'oper. f'distance vrelative :to the,

casing Iandthefront platek to otherwise fipermit withdrawal i o'fthe carrieriromthe :casing: i With l such atkey, andhavingitproperlyIpositionedwith Vthe :above ldescribedrecess .inIv fradial alinement .with the recess Blithe `fhollowfzpinv 6I may be. moved 'inwardly Irelativeto thefront @plate I3 -to .remove the reducedportion 3 thereof 'from' `the recess 64 fin 'the casing .'IiIii-:Buchinward move- 'ment of the @hollow'pin-BIwillfonlylzbe permitted when a key having the necessary recess fis `posi-fm tioned I in the lock withrsucharecess in -alinement in 3, the '.inner `-end-"off the 'lpin 65 normally ...im lvantage of being substantially pick-proof.

' @gestern `carrier by fthe A'key f to fthe proper position ito IperimIiIt -withdrawal'th'eeof from the casing, however, .willf'brin'g a longitudinalgroove or recess 88pm- Yvided 'in vthe member 13.I fat vthejtop thereof, shown in Fi/g.z=2, Vinto alinement with the -protu'beranceiv IfI-the ikeyIdoes not have the necessary recess therein for accommodation of this protuberance i6, yeverrthough. it 'have .the'proper -combination .set therein, l it will be impossible to move thepinfl inwardly out of itsnorrnallockvingV position shown in 4liiigg, sincegthe protuberance 66 will 'thenabut against the key.

It will thus be seen that the carrier I2 .can be removed `from thelockzonlythya keyrhaving not 315 uonly the proper :combination setItherein,.but also Yhaving a'recesszwhich isiproperly positionedso as ft'ofbe V.a'lined .withthe protuberance. 66 when the .-key'is rotated inthe :lockto carrier removable position. Consequently,'it possible to-provide @o lany number. .of keys with the `propercombination topermit unlockingxofthe locktherewith, while I :preventing .removalcoffthe carrier from the casing Iby 'the use :of fsuch'keys. lIt will alsobeapparent Athat ltheiprotuberanceiand the aperture 61 may 5 be disposedwin .any-of a `pluralityof positions I Iiabout the circumference ofthe hollow :pin 6|, so

fthat similar lauxiliary locking mechanism may fbe'employediin vdifferent'series of locks. As shown :.-in the drawingit is necessary to rotate vthe iny,Mistan't carrier throughf772 infaclockwise direction, viewinglFigs. l, 4 and 5,'toibring it into posi- 'ition to :be removed fro'm the casing. I However, any other desired -rdegree of rotation may be fem- .Iployed tto vaccomplishthis function. vIt -will be 5,35 understood, of course, thatthe pin 6I may be of solid. I construction, with the spring t 65 vsurrounding it,Y .rather'than Ifbeing hollow jas illustrated herein. i" I Theznstantlock has the extremely novel:ad In order to preventlany unauthorized operation of lthis `.lock1thegrooves 121, channels I8, IS; 2| :and V22, circumferential Yribs 23,524 Vand 25, .and the auxiliary locking'lugs :51| Aon'the'locking actuators 541 Ihave fbeenprovidedi -Whenit is attempted to pick a lock,ithat is 'to :operate the' same without -usingithe proper .-key rtherefor, it 'is v'customary to :selectivelyI'contact-the tumblers, or inthe instant case the lockinga'ctuators, :with a suitable in- 50 .-strument and, byk maintaining a substantialrotational Lpressureagainst the tumblers, to move themfindividually and 'longitudinally' until such pressure -is perceptibly released therefrom. In this manner, it is possible'to determine the exact v.setting of Ie'achindividual tumbler in practically I 'I-any lock. 1n tl'xe'in'stantl lock, however, jit Ais substamtiallyimpos'sible tolsooperate it; l i j lInzorder to obtainthe necessaryzpressure"above referred-tn, the"carriermust-bemoved as far as possible inza zclockwise :dir ection, for, example, :to

w holdthe. lockingractuatorsIl-I against the -sides .fofntheir'iassociatedgrooves inthe/casing II. If onlyethemain flocking lugs :52 of 'the :lookingacituators 41|- :were gexnployed,l Isuch pressure would ,65 .beithetween this 'aportionf of the tumbler parts -42 Iemdithe'sidetsurrfacescof @the recesses-26. Insuch However, it wlllrabe'cnoted thatxthe auxiliary prtuber'ancesil on the locking-:actuators l4I are :narrower ithan fthe :main .portion of `:the Ilocking actuatorspand fit' their-iassociated grooves. .21 -muoh more closely ithanwthefmain partici :the 'flocking Iactuatrs'fft inthe' :grooves .325. #Consesmfqugxm ylfiin attemm ing itoaohtain zthegnecessary pressure against the locking actuators, onlyv the auxiliary lugs will be in contact with the casing Il. While to an exceptional expert such pressure might be suicient for the desiredpurpose, it will be noted from Fig. 3 that any subsequent rearward movement of any of the locking actuators 4|, in an effort to determine its setting, will result in an almost immediate relieving of such pressure, due to the auxiliary lug 5| being thus moved into coincidence with the channel |8. This is due to the fact that the channel I8, as Well as the channels I9, 2| and 22, is of sufficient width to accommodate the auxiliary lug 5|. e l

In this way, it will be substantially impossible for anyone to unauthorizedly ascertain the setting of the locking actuators 4|. If the person attempting to unauthorizedly open the lock' decides that this rst` position to which he has moved the particular locking actuator 4| is its passive position, and if it happens that the parsion. Without going into further detail, it is thought that the operation of these several parts in preventing the picking of the linstant lock will f be fully understood by one skilled in the art. It should be pointed out, however, that if the person attempting to unauthorizedly open the lock does subsequently discover his error and continues` to move the locking actuator 4| rearwardly, the same result will obtain each time that the auxiliary lug 5| is positioned in coincidence circumferential flanges 23, 24, and 25, together It is thought that the invention and many of 'its attendant advantages will be understood from the foregoing description, and it will be apparent that various changes may be made in the form, construction and arrangement of the parts without departing from the spirit and scope of the invention or sacrificing all of its material advantages, the form hereinbefore described being merely a preferred embodiment thereof.

l"A claim:

l. A lock of the class described, comprising a casing, a carrier rotatably and removably positisular 'actuator is one similar to the upper one in". Fig. 3, such will obviously be an erroneous deciwith the auxiliary lugs s: on the making actuators 4|, function to block the longitudinal movement of the locking actuators which is necessary in order to ascertain the passive position thereof. An auxiliary lug 5| is released from its lateral pressure, in any attempt to unauthorizedly operate the lock, only when it moves into one of the channels I8, I9, 2i or 22. The lateral pressure will then be had on the main lug 52 of the locking -actuator 4|, but sufficient information cannot thus be gained, because the auxiliary lug 5| will then be disposed Within one of the channels to block any further rearward longitudinal movement of the locking actuator 4|. As a result, the pressure which is obtained cannot be accompanied by the necessary longitudinal movement to impart the feel to the person attempting -to unauthorizedly operate the lock.

It will be noted from Fig. 3 that even `in their normally passive position, as illustrated by the lower locking actuator 4|, the locking actuators must be moved a short distance rearwardly in order to bring them into their true passive position. Consequently, whenever it is attempted to unauthorizedly rotate the carrier relative to the casing, the auxiliary locking lug 5| of each of the locking actuators will be the only portion thereof initially providing the necessary lateral pressure, and when such pressure is obtained against the main lug 52, the auxiliary lug 5| will block longitudinal movement of the locking actuator.

tioned within said casing, and a plurality of locking actuators supported by said carrier for longitudinal movement relative thereto and adapted to be removed from said carrier and repositioned relative to each other only upon removal of said carrier from'said casing, said locking .actuators comprising integral members having separate actuating and tumbler portions, and diiferent ones ofsaid tumbler portions being of diiierent lengths to facilitate the setting of different combinations in said lock.

2. A lock of the class described, comprising a casing, a carrier rotatably andremo-vably positionedwithinsaid casing, and a plurality of locking actuatorssupported by said carrier for longitudinal `movement relative thereto and adapted to be removed from said carrier and 3. Ina lock of the class described, a casing, a

carrier mounted for rotation within said casing, tumblers mounted on said carrier for movement klongitudinally thereof to permit rotation oi said carrier relative to said casing, locking lugs on said tumblers normally disposed in longitudinal grooves in said casing for preventing rotation of said carrier relative to said casing, and auxiliary lugs on said tumblers normally disposedy in narrow :grooves in said casing forming radial extensions of said longitudinaly grooves to alone resist initial unauthorized rotation of said carrier relative' to said casing.

4. A lock of the class described, comprising a y housing, a carrier rotatably and removably positioned in said housing, a pluralityof locking actuators supported by said carrier for limited movement relative thereto and adapted to be removed from said carrier and repositioned relative to each other upon removal of the kcarrier from said housing, individual springs for said locking actuators, and means removably mounted on said carrier for maintaining said locking vactuators thereon and for housing said springs and retaining the same against displacement therefromv upon removal of said means Afrom said carrier.

LEO E. DEUTSCH.

points longitudinally

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