US2111098A - Pickproof lock - Google Patents

Description

Mmh 15, 193s. s. SEG/11. 2,111,098

' PIGKPRQOF Loox Filed Dec. 29, 1937 3 Sheets-Sheet l INVENTCR ATroRNEY- 5 Sheets-Sheet 2 S. SEGAL PICKPROOF LOCK Filed Deo. 29, 1937 ATTORNEY Mmh 15, 1933.l

March l5,V 1938. s. sEGAL l PIGKPROOE Loox Filed Dec. 29, 1937 3 Sheets-Sheet 3 Tilly Z INVENTOR BY Y 7 ATToNi-:Y

Patented Mor. 15, v193s 4Luvilap s TA'rEs Samuel Segal,

55 Claims.

The present invention is generally directed to locks and is particularly concerned with cylinder locks of the type having a tumbler and key receiving rotatable barrel cooperatively associated with a s'et of spring controlled driving members slldably disposed in a. housing of a shell independent of the barrel and in such manner that upon the insertion of a properly mated key into vthe barrel the tumblers and the :superimposed driving members line up in a. predetermined fashion to permit appreciable rotation of the barrel relative to the shell. Cylinder locks of the type 'referred Vto are capableof being readily picked by a skilled but unauthorized operator in the utilization of illegal instrumentalities.. This practice is well known in the art and the precise process employed need` not be pointed out specificallyA apart from callin'g'attention to the fact that a cylinder lock can be picked because of the tatable barrel and its shell or casing, between the lower set of tumblers andthe rotatable barrel, between the upper driving members and the and the housing. Many attempts heretofore have been made toconstruct a pick proof cylindrical lock Voi' one kind or another.V Acareful study of the prior art relating especially tovv so-called cylinder locks will bear 'out thispoint of view.

. lished time and time again* and is indisputably l recognized in actual 'practice/ Consequently the 'dminatingjobjectof the 'present invention is realized in the provision of a serviceable cylinder lock-which actually and in practice doesresist unauthorizedi attack by picking. Therinvention has as a further object the provision of a novel v and successful non-pickable lock comprising a sleeve having" circumferentiallydisposed :so-called posed between tne'bemng of the sheniond the initially trapping superimposed mushroom type driving members'during sli-called tensioning" o! the barrel preparatory to the selective opera` tion of picking the lower set of tumblers. .The

1 invention h` as a further Vobjeci'the provision oi an i'mp non-pickable cylinder lock where- Vina movable eeve having butterily `slots each havlng'a central enlarged part and oppositelyy extending reduced parts or wings, is mounted on va .tumierreoeiviog cylindrical borrel and wherein lthe mushroom drivingmembers cooperate with the 'tumblers upon insertion of a properly mated key i play or tolerances ever present between the ro.

. barrelyand between the upper driving members` i l .However as far as know cylinder locks oi this "type can be picked. y This fact has been estabkeyfreceivingbarrel and constitutes means i'or v'the key receiving barrel..`

VVPATElst'rfolf/FICE' Brooklyn, Y.

Appiioation December 29, 19311 serial No. 182,340

(c1. 'io- 364) 4 into the barrel to permit adequate rotation of the latter and wherein upon the removal of the properly mated key and in a lneutral position of the barrel, the driving members are automaticaloperations and wherein subsequently. the sleeve is rotatably displaced in respect to these driving members whereby the latter are caused to be closely straddled by adjacent walls of the winged parts of the butterily slots of the sleeve thus causing the drivingfmembers to beM interlocked with the sleeve and consequently 'thedriving members cannot be raised above the outer surface of the sleeve andrbe freed'from the latter. by an unauthorized operator. 'I'he invention has as another important object to provide a sleeve on a key receiving barrel which sleeve mayrotated in respect to the barrel to positively inter- Vlockwithspaced parts of the driving membersat which time the lower set of tumblers are in part or fully out ,of alinement with companion mushroom driving members and vconsequently -the sleeve in such instance acts as closure means to Y prevent lifting of thetumblers to prevent their projection at least in part o r in whole 'abovethe sleeve. Other important objects, advantages, features, and aspects' of the' invention -willbe more4 readily understood from theteaching's of the -following description considered in connection y with the' accompanying drawings in which: butterily slots and wherein the sleeve ininterl Fig. 1 is o. longitudinal sectional view of the pick proof lock according to 'my invention, 'howl ever showing the spring actuated driving menibers in anormal position andinterlocked with a.v A ,rotatable 'sleeve andvbarrel toprevent rotation of Fig. 2 is view similar to 1 however' illusand the driving members or "mushroom drivers lined up with theloyvertumblers and outside of the'sleeve whereby' the barrel maybe appreciably rotated.A Fig. 3- is a sectional view taken along the line -I-SJ n.41.

ftratng a." properly mated4v key within the barrel,

.' the linelI-,J of Fig. 1.

Fig. 5 is a view similantoFlg. 4 but showing the relation of an upper mushroom driver in respect to the barrel and its. companion tumbler after the mushroom, has been picked from the barrel but unpicked from the encompassing mov able sleeve.

with the key receiving bar-rel shown in perspective.

Fig. 7 is a schematic plan view of the barrel in a .neutral position thereof in respect to the sleeveV andshowing the mushroom drivers in section.

Fig. 8 is a fragmentary enlarged sectional schematic andexaggerated view to show the relation of a' tumbler and its companion driver when the barrel is in a neutral position in respect to the movable sleeve.

Fig. 9 is a view similar to Fig. 'l but illustrating the barrel under tension and the relation vthereof in respect to the movable sleeve preparatory to the operation of picking.

Fig. 10 .is a view similar to Fig. 8 but illustrating the cocked relation' of a mushroom driver when the barrel rias been slightly rotated or placed under tension. v

such relation the attenuated of the drivers are at theextreme limit of associated attenuated 5 ment therewith. Fig. 6 is an exploded' view of .parts associated Fig.` 25 is aview similar to Fig. 2 `but in Fig. 24

a split movable trap or sleeve is employed of the type shown in Fig. 29.

p Fig. 26 is a front view of Fig. 2 or 25 but with 1 the mated key thereof removed.

Fig. 27 is a sectional view, taken on the line of Fig. 25 and Fig. 11 is a schematic'pla'n view showing the relation of the `sleeve with respect to the barrel and mushroom drivers when one of the mushroom drivers has been picked from the barrel.

Fig. Y12 is a fragmentary butlmagnified sectional and exaggerated vievfillustrating the relation ofthe drivers and tumblers when in the conditionrshown in Fig. 11. l

relation of the sleeve in lrespect to the barrel and mushroom drivers when two of the mushroom drivers have been picked from the barrel.

Fig. 1'4 is a fragmentary enlarged sectional and schematic'view showing the relation of the drivers and tumblers when two of the drivers have been picked.` Y Fig. 15 is a view similar to Fig. 13 but showi three drivers picked from' the barrel.'

Fig. 16 is a view similar to Fig. 14 but`showing' the relation of the drivers and tumblers when three of the drivers have lbeen picked from the barrel.

Fig. 17 'is a view similar to Fig. 15 butillustrating four drivers picked from the barrel. f

- Fig. 18 is a view similar to Fig.. 16 showing four picked drivers and one cocked or unpicked driver Fig. 29 is an exploded view showing the barrel, thel split sleeve and associated parts thereof in Perspective of the form'shown in Fig. 28.

. Fig. 30 is a vertical sectional view of another embodiment according to thefinvention.

Fig. 31 is a perspective View ofthe lockshown in Fig. 30`and Fig.`32 is a"perspective view of the key receiving rotatable barrel shown in Fig. 30 with the butterfly slotted sleeve thereof removed.

Illustrative of the several embodiments dis- Ygclosed, the cylinder lock -is .generally denoted C and comprises a casing having a cylindrical shell II spaced walls I2 bridged by fixed closure* plate I3 and defining a housing. enclosing helicoidal springs I4 mountedon cylindrical drivers D1, D,

, D3, D4 and D5 slidably arranged in bores I5 of Fig. 13i is a schematic plan view shwing the?.

the housing. Shell Il includes a cylindrical bore or bearing I6 for rotatably guiding a .cylindrical sleeve llt-:having a plurality of circumferentially arranged so 'called butterfly slots I8 spaced lengthwise of the sleeve.

Each butterfly slot lvcomprises an enlarged circular and central cut out portion I9 and laterally extending restricted gaps or Winged openings 20 and sleeve I'I is rotatably mounted 'and guided on the annular shoulders 2l and 22 of the rotatable barrel generally designated .23 which includes a reduced shank or body 24 provided with a plurality of spaced bores 25 for slidably guiding the lower set of cylindrical tumblers T1, T2, T3,'T4 and T5. l

Integral with the forward part of casing I0 is an annular flange 26 having a recess 21 in which to illustrate the relation of the drivers and tumblers shown in Fig.'1'l.

Fig. 19 isa view similar to Fig. 17 however depicting all of the five drivers in a picked relation inf respect to the barrel but in an unpicked relation to the movable sleeve.

Fig. 20 illustrates in section and in a magnified Fig. 21 is a view similar to Fig. 19 but showing and exaggerated fashion, the rela-tion of the` drlvall of the drivers picked from the barrel and the driving pin of the barrel is. starting to abut the sleeve .to set the latter in rotation from its previous fixed position.

Fig. 22 is an enlarged fragmentary transverse sectional view of Fig. 21 showing asuperimposed driver picked from the barrel but Yunpicked in respect to the sleeve and the barrel in rotatable p relation in respect to the driver.

Fig-23 is aview showing the relationtofthe sleeve and the drivers after the sleeve has been rotated to one extreme limit'by the plug and in ing slot 34 in registration with the key receiving. slot 35 of' the shank 24| of the barrel4 23. The

drill resisting disc 32 embodies a lug or`key 36 fitting closely into gap 31 defined by the spaced .terminals of .the interrupted annular lip 33 (see Fig. 26).

As shown disc 32 is inadvance of the hard steel floating ring 38 which is rotatably seated and guided on the annular shoulder 22 and is arranged to freely rotate against an annular shoulder in the casing near'l the forward 'end of integrally associated with the upstanding unauthorized attack ofthe sleeveand in effect is a guard for thessh ve\which. in association with the shank 24 of thebarrel defines the annu- Y sequently the lower set of tumblers fall to their lowest position. l

If the properly mated key K be inserted with- 'in the barrel the tumblers are raised and consequently their companion drivers are lifted. If

- the key K be properly mated with the tumblers,

e drivers are slidably forced central openings l! of the the lower parts of out of the4 expand slotted sleeve I1 while the upper parts of the alignment with the exterior surface of the sleeve;-

u llotll at the rear end ofthe sleeve il.

clearanoesbetween the drivers, sleeve,

`drivers in'respectto the sleeve,'barrel, and housmg during unnnthtrized picking or' attack or the.

`since the upper parts of the tumblers serve as the-driving means for the sleeve. 'In other wordsl when a properly mated key be inserted into the 2 barrel, the upper surface 4l of the tumblers andi lower surfaces 4I of Ithe discshaped ilanges or mushrooms I! depending from the depending'v neck or attenuated parts Il of the drivers-are in Thusthe sleeve is freed of the drivers and the tumbles are in position to lock the sleeve topermit the-latter to vbe bodily rotated with the barrel and in such event tongue Il suitably retained by ithe barrel' is also rotated to control bolt operating means not shown.

nwto Figs. 7 to 2 4 inclusive, vit will be noted that in Fig, 1- the barrel '23.is in a neutral' position' relative to sleeve, I1 andl the driversD1,'D etc. 'are within the openings Il of the .butteriiy slots 'Il Hence 4the plug del i ned by sleeve I1 and barrel 2l cannot be rot tated unlessa properly mated key hasl been' in-` d I 'and in'such neutral position driving pin secured to ilange 2| is centrally'in` In nga. '1 w 24 inclusive, the miei-'annee 'or and barrel have to. showv schematically the relation ofthe tumblers and` pick proof lockaccording to the invention. f

'lhe showing ofFig..8 may be'saidto indicate a neutral position of sleeve i'| and the .tolerances vexisting around the drivers and tumblers are taken of'to actually trap the driversl slightly yrotate the barrel to take up its play. I i' it is assumed that e play has been taken up by turning the barrel a clockwise 'direction as indicated by the'arrow in F18. 10 the drivers bemushroom l2 is caught by the sleeve and hence it cannot be elevated further, or out of the sleeve and under such circumstances driver Dl may be said to be picked `from the barrel but unlar gap It In other wordsff- 2l is a shield come slightly tilted and there is a slight'clear- 5 to prevent access to the sleeve\ and cannot be ance or onset between the drivers and tumblers eifectively utilized during ."Jamming by an unas shown in Fig. 9 and the drivers are caused'to 1 authorized person to directly couplethe sleeve and tilt slightly by reason of corners 41 striking the `barrel. lower parts of thedriv'ers. Y

As shown in Fig. 1, the cylindrical drivers If therefore an unauthorized tool be inserted 1 Dl', D, etc. project into the enlarged circular intothe key receiving slot of the barrel to actuopenings I0 of the butterfly slots Il. Therefore Tate any of the lower tumblers, say forexample, -the sleeve is locked and cannotxbe rotated. The Tl 1in the attempt to pick its companion driver lower parts of several of these drivers also-project D1, tumbler T1 may be lifted to raise itsdriver into -bores 25 of shank 2l. Hence the `barrel is D1 abovecorner l1, (F18. 12) that is, its mush- 15 also locked and .cannot be' rotated.` In Fig. l, room 42 caninpicklng be raised above cornerll the properly mated key K is withdrawn from the but the marginal portions thereof come slightly barrel and consequentlysprings I4 automatiunderthe nibs 18 dened by-the walls of the cally set l the superimposed drivers to interlock adjacent gap 20 and the central opening I9 of with the sleeve and barrel as indicated and'conthe companion butterily slot I8. Hence this. lo

picked from the sleeve and now there exists g5 a slightly Ygreater offset between thedriver D1 fand its tumbler Tlfalthough the remaining drivers are merely, under tension as shown-in Figs. i1 and 12.

as shown' in Figs. 13v and 14, thereof leavingo alarger offset or clearanc between the driver -l2' 2 and its tumbler Ia as sh wn and in this instance the driver Dl also takes a similar offset position in'respect to its tumbler T1.

Now drivers D1 and Dz havebeen raised and 45 lockedl against upward movement in respect to the sleeve but driver D3, D4 .and Ds remain in their tensloned relation as clearly'evidenced by Figs.' 13 and 14'.' If'therefore driver Ds is ma,

nipulated by operating its companion tumbler 50 T3 its mushroom flange Il may be 'raised above' 'its associated corner l1 of the barrel and in such case it is lockedby nibs 4I and the portions ofthe walls adjacentits winged opening 20 against upward displacement. However at 55 this time thepreviously raised drivers D* and DI sorted into thebarrel. Normally therefore, with inerte-Sli! their Offset relation in to their thekey withdrawn; the sleeve I 'I may be 'said companion tumblers and thus become furthery `to take its nei'itralV positionshownin Figs, 1V trapped as shown in Fig. 15. With the driversfv D1, D and D3 raised outofthe barrel, thereo r, mailling drivers areheld under tensioning. V18) @Having positioned drivers D1, Dz and D.

its mushroom l2 is clear of corner 41 and is oo nslderably underneath the sides ci its oompanionf wingedA opening 20 and -at this time .themush vrooms ofthe previously raised drivers D1, D* andDl likewise have crept further andv consider- 7o;

- ably underneath the walls 'ci' their respective wingedrslnts 20;. n should benoted also um when driversDl, DI, D? and D* have been raised tumblersproject into the'se central openings I9 Feeling fairly contented that driver D1 has 30 of the buttery'slots and are flush with the ex- -now been picked", the unauthorized operator,

terior surfaceof the sleeve' (as `shown in Fig. 2*). may then start to attempt to free the n ext driver In sucnrelstion of thedriv'ers and tumb1ers the D2. Under such circumstances. tumblerl T is key K iay be rotated. Therefore the barrel or manipulated by an unauthorized tool and if ,sufplug is rotated but the sleeve i1 is alsorotated eiently raised the companion mushroom 42 cia3.;

duiiing unauthorised attack. The initial step-in u flicking Ait to tension, the barrel,- lthat is, to

from the barrel 'during picking and are in the position in Fig. 1'1, their deliendinmgg necks 42 have just aboutv entered the adjacent winged openings 20.

'In Figs. 19ans 20111 of mev drivrs have been picked to be clear of the barrel but pre- -vented from being raised from the sleeve since the mushroom ilanges 42 fand the body of the driver above the necks 42 now straddle the sides of .the winged or attenuated openings 20 of the A butterfly slots and thus interlock with the sleeve and consequently they cannot be-raised outl of the sleeve, With all of the drivers free of the barrel the latter may be appreciablyrotated tion of the upper drivers in respect to their companion tumblers and the position of driving pin 45 of the barrel relative to slot 46 ol.' the sleeve I'I.

Now although the necks of all of thedrivers are within gaps 2li of the buttery slots I6 and all of the mushrooms are prevented from being upwardly displaced because of the interlocked relation. of the 4drivers with the sleeve, the barrel still may be rotated in respectI to the sleeve and consequently as the barrel is rotated in the same direction, that is, as indicated by the arrow in Fig. 17, driving pin 45 ultimately reachesan end wall of slot 46 of the sleeve as shown in Fig. 2l.

With pin` 45 against an end wall of -the slot 46, rotation of the barrel will cause the slee'ye Il to rotate in 'the same or unitary direction that is, bodily therewith and consequently necks 43 of the drivers are ultimately struck by ends 50 of the attenuated gaps' 20', that is to say, as the sleeve is rotated, the drivers although now stationary become further and further trapped by the sleeve and when corresponding ends 50 of the hutteriiy slots strike necks 43 neither the sleeve nor' barrel can be tamed in the samedirection since these necks now act as stops for the sleeve (see Figs. 23 and 24). In. the tumbler and driverrelation shown in Figs. 23 and 24, the drivers cannot be removed from the sleeve and the' tumblers cannot be raised out of the sleeve which ac'ts as a stop and are underneath duced gaps I9 of'butterfly slots.

It follows that even though the barrel may be rotated appreciably although not sufficiently to the re` -actuatetongue 44 the required throw, 'the drivers cannot be raised to a positionto be outside of the sleevein th process of picking with unauthorized means and if the attempt is made to raisethe tumblers outof the sleeve in the position shown in Fig. 24.-, they w11] strike the s1eeve' but c ould not:A

be positioned above or through the latter.

The unauthorized operator ltherefore finds himself in 'avery uncomfortable situation even though all the drivers have been raised'above the barrel which gives the operator an initial feeling that .he has made lconsiderable progress but ultimately finds himself completely at a loss. unless of course he desires to start all over again by revolving, the barrel in a counter direction to cause pill"y 46 to rotate the sleeve lin a similar direction until reduced gaps 2II leave necks 4 3 of th vdrivers but in such event the tumblers line up` with thedrivers and the mushrooms 42 are automatically projected into bores 25 ofthe bar;lv rel and the drivers enter circular openings I9 oi.' the butterfly slots and therefore the unauthorized ..rotates therewith.

anneesoperator-is imno better position and in fact is again at a starting point. Ii' after starting again he tensions the plug by rotating it in a counterthe butterflyA slots to receivethe necks-of the clockwise direction, and again starts, picking he will merely arrange the other winged parts of x drivers and therefore is left with the same div shank 24 of thel barrel and in the neutral position of the split sleeve I'l'pins52 are centrally disposed in the slots deiined bythe alined gap 53 as `indicated in Fig;- 28. Upper complement 5I is also provided with a plurality of butterfly slots I8 o1' the type alluded to. to wit, comprising expandedqportions I9 merging withreduced and wing portions 2Il to cooperate with the upper drivers in a manner alreadysetforth. Hardened ring 34 is made in sections 56 and 51 in order that it may be conveniently assembled on the shoulder 22.

According to the form shown in Figs. 25 to 29, pins 55 selectively cooperate with corresponding end walls 58 oi the slots formed by gaps 53 to rotate the sleeve after the drivers havebeen picked from the barrel anddisposed on the exterior sur- 'face of shank 24 of the barrel whereby the mushroom' drivers also cooperate to guide the Vrotation of the sleeve in case the mushrooms are within lgap 39 even though the drivers cannot be raised above the sleeve in a manner hitherto explained. In other aspectsfthe form according to Figs. 25 to 29 is along the lines of the embodi ment s'et forth in connection with Figs. 1-24 inclusive. f

According to the form 'illustrated in Figs. 30, 31 and 32cylinder lock C has its shell II provided with a head or bushinggenerally denoted B. This bushing is of hardened or armor steel vto resist drilling and it includes a front closure cylindrical projection 63 of a hardened or armor' steel collar broadly denoted 64 having an an- 4 nularflange 6 5 integrally merged with the rearwardly extending interrupted annularilan'ge 66 having diametrically arranged upper and lower slots.6l 'and 68 respectively.

shank upf the barre1 :31's provided with an annular stop shoulder 66 which cooperates with the rear end of the interrupter ilange 66 to limit the insertion of shank .24within1collar'64 at which time the forward part 69 of shank 24 of the barrel is against the front'fclosure projection 63 `which is provided with key receiving slot 34.

in registration with slot 35 of) the shank 24.`

The lower slot 68 of the collar clears the key receiving slot 35 of 'the barrel whilesthe u pper slot 6T clears the front tumbler receiving slot 25 ,of thebarel 23 and the collar 64 is ilxedly held in place on shank 24 by pin means 'Ill (Fig. 32). Hence if the barrel be rotated collar 64 bodily As-in the'case ci?v the form shown in Fig. 29, sleeve I1 is split and includes the complementary sections 5I and 52-againsl;f which the split hard- 75 ened ring Vat rotates and of course this sleeve I'l includes theibutteriiy slots IB of the type shown in i Fig. 29 for cooperation with driving pins 55 f xed to the shank as heretofore described.

It should'be observed that the front wall 60 Vextends considerably beyond shell Il to charac-'-A terize theannular flange ll which is integral with. the annular wall 12 xed to the shell by suitable fastening means 13.

Ihus by the present arrangement, the metal barrel 23 made in sections with the front part or collar GI of drillresisting metal while the metal `'shell is also made in sections and cooperates withL bushing B which also is'of drill resisting material and constitutes with shell Il the lock casing,V In

other aspects, the form according to Figs. 30-32 is along the lines of the embodiment described in connection with Figs. 26 to 29 inclusive,

In the specification and claims, the ex/pressions tumbler or "tumbler means refer to a tumbler pin or one or more tumbleg pins respectively while ythe expressions driver or driving means" refer to a driving pin or one or more driving pins respectively while the expressionl "pin tumbler is directed to include a. driving pin and a companion tumbler pin, and where'the expression mushroom ange is mentioned such Vfeature may be considered as a member interl- 'veninga dependingneck or a'reduced part of 4an associated driver slid'ablyguided in the casing i anda companion tumbler guided in the plug and vin case of the butterfly slotsmthe central portions thereof may be considered as enlarged or expanded means and the wings thereof as con- -stricted or reduced means.

Variations and modications within'the scope of this invention and portions lof the improvements maybe used without others.

andas many `changes could be made in the 'above `set forth embodiments and many widely different embodiments u1d 'be devised without dep-,t-

ing from the scope thereof, it is intended that all matter contained in the above'- description as shown in the accompanying drawings s be interpreted asillustrative and not in a limiting sense.-

I claim; ..1. In a cylinder lock, a casing,` a keyreceiving barrel rotatable -within said casing; a sleeve cio' driving meansi'ullymutjofsaid expanded por? mounted on said barrel and having an A elongated slotcomprising `an expanded and a reduced'por tion, resiliently 'controlled' driving means slidablyV guided inV said casing and projectable into said expanded portion and barrel to prevent rotation 'of said barrel and sleeve and comprising a neck .projectable into said reduced portion and having a depending ange projectableundensaid reduced portion to prevent removal of said driving means from-said sleeve,V and slidable -tumbler means within said barrel for projecting said tion upon' insertionl of a key.V properly mated `with"said tumbler means into said bari-el whereby apart of said .tumbler means -is disposed within said expanded portion Ato permit bodily rotation of s aid sleeve and barrel relative to said `2'. In a cylinder lock, aecasing, a key receiving barrel rotatable. within said casing, a sleve mounted on said barrel and an elongated slot comprising an expanded and a reduced portion, driving means slidablyguided by and within said casirgand prolectable through said ex' panded portion and ,into said barrel to prevent rotation-of said -barrel and sleevejgand comprisingV a reduced part and a depending flange, slidl; may be made -projectable in part through .said e Y able tumbler means for lifting said driving meansslight rotation of the latter relative to said casing to position partsof said sleeve adjacent said reduced portion in overlapping relation in respect to said ilange to preventremoval of said driving .means from said sleeve.

3. In a cylinder lock, a casingl a key receiving barrel rotatable within said casing, a sleeve v mounted on said barrel and having a slot including an expanded and a reduced portion defining nib means, tumbler means slidably mounted in said barrel, slidable driving means movably -guided in said casing and contacting said tumbler means and comprising a reduced part and adepending iinge, said barrel upon slightrotation thereof and upon sufllcient elevation of said tumbler means to cause said driving means to to remove the latter out of said barrel following be removed from said barrel and thus disposing r .said ilange in overlapping relation with said nib means to prevent removal of said driving' means from said sleeve.

4. In a cylinder lock, a-casing, a key receiving barrel rotatable, within said casing, a sleeve Y mounted on said barrel and having an elongated77V slot comprising an expanded and a reduced portion, driving'means slidably guided within and by said casing and projectable through said 4expanded portion and intosaid barrel to prevent rotation' oi said barrel and sleeve and comprising a reduced part and a depending ange, and slidable tumbler means for' actuating 'said driving means tolremove the latter out of said barrel subsequent to slight rotation of said barrel in respect to said casing to positionthe sides of said reduced portionk to st addle said reduced part and `dispose portions f said sleeve adjacent said: sides `in overlapping relation in respectI to saidJ flange to prevent removal of said driving means from said sleeve. d f

5. In a cylinder lock, a casing; a key receiving barrell rotatable within said( casing, a.- sleeve mounted on said barrel and having a ciruni-y ferentially arranged slot comprising an expanded and a reduced portion,l spring controlled driving and Lprojectable in part throughI said expanded portion and into said barrel to prevent rotation ofD said sleeveland barrel and comprising a neck having a depending flange. tumbler means slidmeans slidably'guided within and byl Vsaid casing' ably guided in said barrel' and adapted to ele- `vate said driving means even subsequent to slight rotation 4of said barrel relative to said casing for 'positioning said driving means out of said barrelM Ato permit rotation ofr said barrel relative-.to said sleeve, and means carried by said barrel for rotatv ingsaid sleeve bodily therewith to `move -said're duced portion' of said slot towards said neck to, permit the4 sides of said reduced portion to .str'addlesaid neck whereby portions of. 'said sleeve adjacent saidl reduced portion overlap said flange to prevent removal of said'idriving means from said sleeve. l

6. In a cylinder lock, a casing, a key receiving barrel rotatable within said casing, a sleeve r'otat-- ably mounted on saidbarrel and having a cirzumferentially .arranged slotA comprising anex`v panded and a reduced p0rtion,\spring controlled driving means slidably guided in said casing and dedfportion and into^said barrel to' preven rotation of said sleeveand barrel `and-comprising a neck having a depending flange, tumbler means slid-3 biy guided said barrel and ddaptedfo .nrt

driving means subsequent to slight rotation.

of said barrel relative to said casing for positioning said driving means out o1' said barrel to permit rotation of said barrel relative to said sleeve,

means associated with said barrel and 'sleeve torotatably move said reduced portion of said slot towards said neck to permit'the/ 'sides of said reduced portion to straddle said neck whereby portions of said sleeve adjacent said reduced portion overlap said ange whereby said sleeve is rotatably. interlocked witlr said driving means, and

means tolimit rotational displacement of said barrel and sleevewhen said flange is out of said barrel. I'

7. In a/cylinder lock, a casing, a key receiving barrel rotatable within said casing, a sleeve rotatably mounted on said barrel and having a circumferentially arranged slogfcomprising an 'expanded and a reduced portion, spring controlled driving means slidably guided in said casing and projectable in part through said expanded portion and into said barrel to prevent rotation of. said sleeve and barrel andcomprising a neck having a depending ilange, tumbler means slidably guided in said barrel for lifting said driving 2livr means even subsequent to slight rotation of said barrel-relative to said casing; for positioning saiddriving means out of said barrel Ato permit rota-l tion of said barrel relative to said sleeve, and a 'lost motion connection between saidbarrel and sleeve to permit the barrel `to rotate relative to said sleeve when said driving means is removed from the barrel, said connection having means .to permit appreciable rotation -of said sleeve upon rotation of said barrel whereby said sleeve bodily -rotates with said barrel, vand means to limit bodily rotational displacement of said sleeve and barrel.

8. In a cylinder lock, a casing a key receiving barrel rotatable within saidcaSing, a sleeve rotatably mounted on said barrel and having .a

circumferentially arranged slot comprising an 'expanded andja' reduced portion, spring controlled driving means slidably guided in said cas-. ing and projectable vin part through said expanded portion and into .said barrel to prevent rotation of said sleeve and barrel and comprising a neck having a depending. flange, tumbler -means slidably guided on said barrel to lift said driving means for -positioning. said driving means out-of `said barrel and'said neck into said reduced -porf vtion to permit rotation of saidlbarrel relative to said sleeve, and a'lost motion,v connection between *said barrel and sleeve to permit said barrel to rotate relative to said sleeve, said connection comprising pin means carried by' said barrel and a slotarranged in said sleeve to permit appreciable rotation of said barrel relative to said sleeve, said last mentioned slot"'having (a"`wall adapted to be engaged by said pin means to rotate 'said sleeve during rrotation of saidbarrel at which time the lsides of said reduced portion straddle said neck and cooperate withl said flange to prevent removal of said driving means from said sleeve.

9. In a cylinder lock, a casi-ng, a key receivingbarrel' rotatable within said casing, a sleeve rotatably guided on said barrel and Lhaving a circumferentially arranged slot comprising an expanded and a reduced portion, sprl-ng controlled drivingmeans slidably guided in said casing and projectable in part through said expandedportion and into said barrel to prevent .rotation of said sleeve and-barrel-and comprising an neck .having adepending ilange, tumbler means slidably guided in said barrel for positioningsaid driving means out'of said barrel and Said Rel;

barrel and a slot arranged in said sleeve to permit appreciable rotation of said barrelA relative to said sleeve, said last mentioned slot having a wall adapted to be engaged by said pin means to rotate said sleeve during rotation of said barrel whereby the sides of said reduced portion straddle said neck and cooperate with said flange to inteock said driving means to prevent removal of said driving means from said sleeve, and means to limit rotational displacement of said sleeve and barrel.

10, In a lock, a casing, a barrel rotatably supported by said casing', a sleeve rotatably surbler slidably guided by said barrel, and a spring controlled slidable driving member within said c asing and movabl'y guided thereby and contact' iing said tumbler andv comprising a depending neck and a flange depending from said neck, said slidable. driving means in a locked relation ,of said, barrel and casing extending in part into said expanded portion while said reduced portion communicates withl said expanded portion and extends laterally thereof for cooperation with said neck and flange to permit rotation of said barrel relative to saidvsleeve and prevent withdrawal of said driving means from said sleeve.

11. In a lock, a casing, a key receiving barrel rotatably supported by said casing, a sleeve surrounding said barrePand having a circumferentially arranged s lot 'comprising an expanded and a reduced portion, a tumbler slidably guided by said barrel, spring controlled slidable driving means movably guided Within saidJ casing and .contacting said tumbler and comprising Aa depending neck adapted Vto be received by said refrom said neck adapted to be `interposed between said sleeve and barrel to prevent removal of said driving means out oil said sleeve.

12. In a lockAIL a casing, a key receiving barrel rotatably supported by .said casing, a movable sleeve surrounding andin part spaced fromsaid barrel and comprising a circumferentially varranged slot having an expanded and la reduced portion, a tumbler slidablyl arranged in said barrel, a driving member mounted on said tumbler c andk comprising a neck adapted to be receivedv in said reduced portion and having a depending flange projectable underneath said reguced por tion, and cooperatingwitli said sleeve to prevent removal of said driving member therefrom, and a loose driving connection :between said sleeve and barrel.

13. In a lock,- a casing, a key receiving barrel ing said sleeve on said barrel, said sleeve having a circumferentially arranged slot comprising an expanded and a reduced portion, tumbler means slidably guided by said barrel, and spring controlled driving means slidably guided wit-hin and by said casing and projectable into said expandf ed portionrand said barrel to prevent rotation of j saidsleeve andv barrel, said driving means coml prising vneck means and iiange means, said barrel adapted to be slightly rotated relative to said f sleeve to place said driving nieans under stress,

said tumbler means adapted to be actuated to raise said driving means out of said shank to position said dang/e means in said gap to cooperate with portions /oi said sleeve adjacent said expanded ponti/on and reduced portion of said slot to preventf'emoval of said driving means from ,Y

'iiange-projectable into said gap and underneath said reduced portion to extend beyond the sides oi the latter and cooperating therewith" to prevent removal of said driving member out ofsaid l sleeve, and a loose driving connection for said sleeve and barrel, said neck adapted to be straddled by the sides of said reduced portion of said l slot when said ange is disposed in said gap, said sleeve constituting closure means to prevent pro- =jection of said tumbler through said sleeve'when said neck is disposed within said reduced por-` tion.

15. In a lock, a casing, -ai key receiving barrel rotatably supported in said casing and compris-l ing a reduced shank, a sleeve rotatably mountedon said barrel and dening with said shank a gap. a loose driving connection for rotatably guiding said sleeve on said barrel, said barrel having a circumferentially arranged slot comprising an expanded and a reduced portion, tumbler means slidably guided by said bai'relf and springcontrolled driving means slidably guided by said casing and projeotable into said expanded portion and barrel to prevent rotation of said sleeve and barrel. said driving means comprising neck means l receiving barreLa rotatable sleeve mounted on and ange means, said ,barrel adapted to, be slight.- ly rotated relative to said sleeve to place. said vdriving means' under lstress, said tumbler means adapted to be actuated to raise said driving means out oi said shank to position said flange means lin said gap and cooperate with a portion of said sleeve adjacent said expanded portion andr-L duced portion of said slot, said barrel adapted to be rotatedkrelative to saidI sleeve Awhen said driving meansisut of said shank and cause said connectiomto rotate said sleeve upon rotation of said barrel, and means'to-nmlt bodily rotational displacement of saidfsleeve and barrel.

16. Ina lock, a casing havi'ng a rotatable'key said baxrel and'provided 'with a'circumferentially .arranged slot having an expanded and a reduced portion. tumbler means slidably guided in' said barrel, slidably-guided driving meanamovably retained withinsaid casingf and mounted on said tumbler means and proiectable intofsaid sleeve 1 and barrel to prevent rotation-ot said barrel and sleeve andcomprising a 'neck having a depending iia'nge, means for rotatably guiding said sleeve, said tumbler means adapted to shift said driving Y means to'unlock said barrel although said driving means in partnprojects through'said expanded portion Vto prevent rotationjof-said sleeve, said, barrel adapted to be rotated relative to saidfsleeve te .permit the sides of said reduced polziln "to straddle said neck, '-said ilang'e; uponrjota'tion 'of said barrel -relative to-saidsleeve adapted-to be interposed between said barrelfand sleeve tolprefl ','means from said barrel.

vent-saidA drivingxeans to be projected out of said sleeve, said eeve constituting-means to prevent projection of said tumbler means out of' said sleeve when said ange cooperates with said sleeve to prevent `said .driving means to be projected foullylout of said sleeve.

17. In a lock, a casing, a barrel rotatably carried by said casing, a sleeve interposed .between said casing and barrel and comprising aplurality of spaced ,slots each having an expanded and a constricted portion, a rotatable ring mountedon said barrel and in front oi said sleeve, driving means adapted to project through said expanded y portions of said slots and cooperating with saidl sleeve and barrel to prevent rotation'thereof, and" tumbler means for actuating said driving'nieansto removethe latter out of said barrel and'in part vinto said constricted portions to permit rotation o 4of said barrel relative to said sleeve and to cause saidA driving means ,to interlock with portions of said sleeve adjacent said constricted portions to prevent removal of driving means from said sleeve.

1'8.fIn a lock, a casing comprising a shell' andA a drill resisting bushing mounted on said shell, a key receiving barrel comprising a shank and la drill resisting collar mounted on said shank, a -sleeve mounted on. said barrel and Aincluding a plurality of butterfly shaped slots each having an enlarged portion and oppositely extending narrowed' portions, a ring rotatably mounted on said barrel to prevent jamming oi?r said sleeve slidablespring controlled driving means movably vguided in said casing and adapted .to be received by said expanded portions and shank to prevent rotation of ,said'sleeve and barrel.` and tumbler means for actuating said driving means. 19. In a lock, `a casing, a key receiving barrel, a sectional sleeve interposed between sai'dcasing Vandfnarrel. and havingA a plurality of circumferentially disposed and spaced slots each comprising an expanded portion and communicating op- 1 a member mounted on said barrel-and dening l t includ-- with said shank a gap a d having a ing an expanded and a c nstricted po ion, tum-l bljer means 'slidably guided in said barrel, ands slidable driving meansguided in said casing and I proiectable through said expanded portion an l positely and laterally extending reduced por-` Ainto said barrel and contacting said tumbler means, said driving means havingj'a ilange and a redced part', said barrelfiupon slight rotation bier means causing said expanded portion to be .disposed in said gap and between saidA shank and thereof and uponsufilcient elevation of said'tum shifted in a direction away `from said reduced memberA to prevent removal or 'said driving 21.- In a'c'ylinder lock, a casing, a key' receivfing plug rotatable within said casing and com-I "prising a sleeve having al circumferentially .an-v '-ranged slot having. 'an expandedopening and vco'n imunicating laterally extending narrow openings, tumbler .means slidably guided` in said plug, and ldriving means slidably guided by said casing and by walls of said expanded opening and contacting said tumbler means and including an intermediately disposed depending-reduced part, said plug upon slight rotation thereof `and upon sufficient elevation of said tumbler means causingsaid expanded opening to be shifted in a' direction away from said depending reduced part 10 to permit one oisaid narrow openings to move in a direction towards said reduced part to receive the latter whereby'a ypart of said `sleeve adjacent said` last mentioned narrow opening movably interlocks with spaced upper and lower portions of` said driving means to prevent removal of th latter from said plug.

22.v In a cylinder lock, a casing, a key receiving plug rotatable within said casi-ng and comprising a shank, and a sleeve surrounding said shank- 2 and defining -therewith a gap and having a circumferentially arranged slot comprisingan ex y panded opening and a narrow-opening, tumblermeans slidably guided in said plug, driving means projectable through said expanded openlng and slidably guided in said casing and contacting said tumblermeans, said driving means having a ldepending reduced part and a flange, said plug upon slight rotation thereof and upon suilcient elevation of said tumbler means c'ausfing' said expanded opening to be shifted slightly in 'a direction away from said depending reduced part -to permit said arro'w opening to move in a direction towards said reduced part to*v receive the latter whereby said flange is'disposed'in said gap vand below butadjacent a part of said sleeve adjacent said narrow opening to prevent sernovalv of said driving means from` said sleeve, said sleevei and dependingl reduced part having means to limit rotation of said plug when said depending re` 40 duced partis 'disposed within said narrow open' ing. v

23. In a cylinder'lock, a casing, a. plug rotatable within said casing and comprising a reduced 4shank and a vsleeve spaced from said shank and v.having a slot including an expanded opening and narrow and .opposite openings extending laterallyA 'of' said expanded opening, tumbler means slidably guided in-said plug, and slidable driving means guided in said casing and contacting said tumbler means, Asaid `driving means having a flange and a' reduced part, said plug upon slight rotation thereof wand-upon suiiicientelevation of said tumbler mans causing-said' expanded open-1 "ing to be shifted in 'a direction awayirom said reduced part to permit one of said narrow open-'- g vent rotation of said plug when saidv sleeve is `lint'erlocked withvv said. driving means.

24. In a cylinder lock,'a casing, key receivingv rotatable means rotatably guided in said. casing" and including an expanded'opening vand; a reduced opening adjacent `said expanded opening,

"driving means slidably guided in `said casing and .comprising a reduced depending'part, tumbler means lslidably' guided -lnsaid rotatable means for elevating saiddriving means above 'said rotatable means'lupon insertion of a key properlymating withrsaid tumbler means into said rotatjable means; sprlngmeans for-,projecting said partto limit rotation of said'plug.

driving means at least in part through said expanded opening and into said rotatable means upon lwithdrawal of said key to prevent appreciable rotation -of and thus lock saidi rotatable means against rotation, saidI rotatable means when locked adapted to be slightly rotatably displaceable in respect tosaid casing to slightly offsetsaid driving means and tumbler means relative to each other, said tumbler means in the oifset relation Athereof in respect to said driving 10 -means and upon suiilcient elevation thereofv adapted' to lift said driving means and displace said depending part into said reduced opening,

and means cooperating with said depending part to prevent rotation of said rotatable means rela- 15 'tive to said casing.

25. In a cylinder-lock, a casing, a plug rotatable Within said casing' and comprising a member having a slot including anexpande'd and a reduced opening, tumbler means slidably, guided 20' Ato receive the klatter to permit rotation of said 30 plug relative to said casing, said reduced opening having a wall cooperating with said reduced 26. In a cylinder lock, a casing, a plugrotatable within said casing and.comprising arshank, a 35 member interposed between said shank and casing and having a slot substantially normal tothe longitudinal axis thereof and including an ex-v ypanded and a reduced portion,'tumb1er m'eansJ slidably guided in said plug, and slidable driving 40 means in -longitudinal alinemnt with'fsaid tumblermeans and guided in. said casing and contacting said tumbler means, said drivingmeans having a ange and a reduced part, said-plug upon slight rotation thereof and upon suiliciet elevation of said tumbler meansz causing said expanded 'portion to be shifted in va direction awayfrom said reduced part to permit said reduced portion of said slot to movei "direction toyvards said reduced part to recelwA ".the latter whereby saidv flange is 'interposed between said shank and member to causey said driving means of said driving means from said member and from said plug, -said plug in the interlocked' relation 55 .of said Vtlrivlng means and member adapted to ,be-`

rotated relative to said casing whereby said tumbler means isy appreclably olut-lof/said' alinement with said driving means,and m ans to limit rotation of sai-d plug when saidydrl rng means is` .6o y vinterlocked with said member. 27. In a cylinder lock,.a casing, a key' receiving l.

pl rotatablewithin said casing and comprising a barrel having a shank and a curved member spaced from said 'shank and including a cir-4 65' cun'fii'erentially-4 arranged -slot havinggan ex# panded opening and laterally extending reduced openings, tumbler means slidably guided in said barrel, and"drivlng means slidably guided in said casing and contacting said tumbler means, said 70 driving means having. a-depending reduced part and a dlange, said plug upon slightrctation thereof and upon suiilcientelevationof'said, tumbler- `means causing said expanded opening to be shifted lin a direction -away from said depending l75 aimons reduced part permit one of said reduced openings'to move in a direction away from said reduced part and another of said reduced openings to move in a direction vtowards said reduced part 'fto receive the latterwhereby said ange is intere posed between said member and shank and below a part oi' said sleeve adjacent said last mentloned reduced opening to prevent removal of said driving means 'from said plug.

28. In a cylinder lock, a casing, a key receiving plug rotatable within said casing and comprising a barrel-having a reduced shank and a split sleeve surrounding said shank and includ. ing oircumferentially arranged slots dbiining centrally arranged expanded openings and laterally extending reduced openings, tumbler means slidablyV guided in said barrei'drivingmeans pr'ojectable through said expanded openings and slidably .guided in said casing and contacting said tumbler means, said driving means having.

means to permit one or more. of said reduced openings to move in 'a direction towards said reduced means to receive the latter whereby said flange means is interposed between said shank and sleeve and said drivingmeans is interlocked with said sleeve to prevent removal thereof from Asaid plug, said plug in theinterlocked relaticn4 of said driving means and sleeve adapted'to be.

rotated until atfleastione' end of said reduced openings strikes 'saidredueed means.

29. In a cylinder lock, a casing,.a key'receivling. plug rotatable withimsaid-casing and comprising a barrel having a shank and a split sleeve j surrounding and spaced from said shank and in. cluding circumierentiaily arranged and spaced ,slotseach dening an expanded opening and a narrow opening, a plurality of' tumbler means slidably guided in said barrel, and a vplurality i .of driving means slidably guided inf-said casing f and prcjectable through said expanded openings and contacting and normally in longitudinal allnement with said tumbler means, said driving means each having a depending `reduced part and a flange, said vplug .upon slight rotation thereof and upon suiilcient elevation of said tumbler means causing said expanded openings to be shiitedin a direction awayfrom said depending reduced parts to permit said narrow openings to move in a. direction towards said reduced parts to receive the latter whereby said ilanges are disposed between said shank and sleeve to. cause said driving means to interlock with said sleeve to prevent removal of said driving means from said plug although permitting said sleeve to be rotated relative to said vcasing until one end .of

one of said narrow openlngsstrikes at least one A.

pletely out of said alinementwith said means'.

30. In a cylinder lock, a

ing a barrel having a shank, a member spaced Afrom said shankand carried by said ban-@1 and comprising spaced circumfer/entlally arranged slot means having .centrally disposed expanded means and oppositeiy extending reduced means in ,communication with. said expanded means,

. ers slidably guided in said casing, a'key receiving plug rotatable. within said casing .an'd com'pris--A tumbler means slidably .guided in. said barrel, and driving means priectable through said expanded means and intosaid shank and slidably guided in said casing and normally contacting said tumbler meansvand having a depending reduced part and a ilange, said plug upon slight rotation thereof and upon suillcient elevation, of said tumbler means causing one of said reduced means to be moved in a direction towards said depending reduced part to receive the latter whereby said ilange is disposed out of said shank and between said barrel and member and cooperatingwith a part ofthe latter to prevent removal of said driving means from said plug although permitting the latter to rotate relative t6 said casing, and means to limit rotation of said plug relative to said casing.

31. I a cylinder lock, a casing, a key receiving plug rotatable within said casing and comprising -a barrel. a member mounted ron said barrel and having a plurality of spacedand circumferentiaily arrangedslots each having an expanded opening and alined and opposltely extending narrow openings, a 4plurality of driving means slid'- ably guided 1n seid casing end ,proiectable through said expanded openings and into said barrel e to prevent rotation. of said barrel .and sleeve and each comprising a reduced part, a plurality ofslidable tumbler means for lifting. said driving means to remove the latter out o! said barrel following slight rotation of the latter relative to said casing to position said reducedparts of said driving means within corresponding.

narrow openings of ysaid slotsi to pei-mit rotation of said member relative to said casina', and means cooperating with said reduced-'partito limitrotafj tion of'said member in'respect to said casing; ,32. Iny a cylinder lock, a casinl. key receiving rotatable means .guided by 'said easing and in'.v

cluding a plurality of expanded openingsiand a pluraiityjof reduced open'ii a plurality ofl drivprisms a'redueed denendlnspartpa nlurslitt tumblermeans slidably in said rotatable and each .com-

mated witnfsnd tumbler means. .mtosniafxntatable means to Del'mgthc latter to mit 1.91*

ative to said causing.y andsming 'for-muys; -ing said drivers at least in part intoeaidjex panden openinssf'to' lock said ratatahlecsiesnl" against appreciable rotation relative eas-.- in'g, said rotatablemeans'adapted to slightly rotatedin the lockedrelation thereof relative to said casing to slightly onset the longitudinal axis tudinalaxis oi said tumbler means, means' in the .offset relation thereofin to said depending parts. adapted to be to arrange said depending parts in said reduced openings, said rotatable means having portions Yforming ends of said reduced openings cdopentportion, s plurality of driving means within and .bly b ysaid casing and. each.

of said depending 'parts in repectto- Inglis' nimma v 3. In a cylinder lock, a \casing,a plug comprising a key receiving barrekrotatably by said casing-and including 'areduced .and a sleeve concentrically mountedon relpanddeiiningwith said reduced a la .and including ablurality ofspaced and circumf .'g

a reduced depending part, substantially disc shaped members disposed adjacent said depending parts, and a plurality oi tumbler means for actuating said driving means, and spring means acting on said driving' means to project the latter, said members and said depending-reduced parts through` expanded portions of said slots and into said shank for locking said sleeve and barrel to prevent appreciable rotation of saidplug relative to said casing, said barrel in the locked relation of said plug adapted to be slightly rotated relative to said casing, sai d tumbler means in the locked relation of said plug adapted to elevate said driving means and members to arrange said reduced depending parts at least in part within said gap outside of said shank and within said reduced portions of said slots to permit rotation oi' said plug, said depending parts and said reduced portions oi' said slots constituting means to prevent rotation of said plug relativeto said casing.

34. In a cylinder lock, a casing, a key receiving plug ineludinga plurality of circumferentially arranged slots each .having an expanded portion and a laterally extending reduced portion, a plurality of driving means .within and slidably guided by said casing and eachv comprising a depending reduced part, a plurality of intervening members disposed adjacent `said depending reduced parts, tumblervmeans. for actuating said intervening members to elevate said driving means, spring means acting on said driving means to project said driving means with said intervening members through said expanded portions and into said plug for locking the latter to prevent appreciable rotation thereof relative to said casing, said plug adapted to be slightly rotatable in the locked relation ,thereof relative to said casing, said tumbler means in the locked relation of said plug adapted to elevate said inters vening members and dispose said reduced depending parts at least'in part within. said reduced portions of said slots to permit rotation of said plug, and means to limit rotation of said plug .45

when said reduced parts are within said reduced portions.

35. In a cylinder lock,'a casing, a key receiving barrel rotatable .withinsaid casing, a sleeve mounted on said barrel and'having a circumferentially arranged slot comprising an expanded opening and opposite and Lreduced openings, spring .controlled driving means slidably guided in said casing and projectable-in part through said expanded opening and into said barrel to prevent rotationofA said sleeve and -barrel and comprising agnck, and tumbler means slidably guided in said barrel, said driving means having an'intervenor slidably guided iny said barrel and interposedbetween said neckand tumbler means, the latter cooperating with said' intervenor to lift said neck from said barrel and into one'of said reduced openings to permit'rotation oi.' said sleeve relative to said casing, said neck and one of said vreduced openings constituting means to limit rotation o! said sleeve relative to' said casing. l

36. In a cylinder lock, a casing, a key receiving barrel' rotatable within said casing, a movable sleeve mounted on said barrel and having a cincumferentially arranged slot comprising-an expanded opening and reduced 'openings in corn-l munication with said expanded opening, spring controlled driving means slidably guided in said v'casing and projectable in part Vthrough said expanded opening and into said barrel to prevent rotation of said sleeve and barrel and comprising a neck, tumbler means slidably guided in said barrel to lift said driving means for positioning said .driving means. out of said barrel and said neck into one of said reduced openings to permit rotation of said sleeve relative to said barrel, and a lost motion connection between saidbarrel and sleeve comprising pin means carried by said barrel and a. slot arranged in said sleeve to permit appreciable rotation of said barrel relative to said sleeve, said last mentioned slot having a wall adapted 'to 'be engaged by said pin means to/rotate said sleeve during further rota.-

tion of said barrel.

37. In a cylinder lock; a casing, a key receiving barrel rotatable within said casing, a sleeve roneck, a plurality oi' tumbler means slidably guid-v ed in said barrel, said driving means having intervening means interposed between said necks and tumbler means and cooperating with said necks for positioning the latter out of said barrel and in corresponding reduced openings of said slots to permit rotation of said sleeve relative to said casing, and a lost motion connection between said barrel and sleeve to permit said barrel to rotate relative to said sleeve, said connection comprising pin .means carried by said barrel and a slot arranged in said sleeve to permit appreciable rotation of said barrel relative to said sleeve, said last mentioned slot having a wall adapted toV be engaged by said pin means to rotate said sleeve during rotation of said barrel, one or more of said reduced openings having means cooperating with one or more of said necks to prevent bodily rotation of said barrel and sleeve.

3,8. In a cylinder lock, a casing, a key receiving barrel having areduced shank rotatable within said casing, a sleeve movably mounted on said barrel and spaced from and surrounding said Ashank and. h aving a plurality of circumferensaid barrel to prevent rotation Ioi! said sleeve and barrel and each comprising a neck having a depending.v ilange, a plurality of tumbler means slidably guided in said barrel for -lifting said driving means subsequent'to slight rotation of said barrel relative to said casing to position said necks in the corresponding'narrow openings of /saidslots and said driving' means out of. said .barrel to dispose said flanges on the exterior suriaceof said `shank and between said vbarrel and sleeve to permit rotation of said shank 'relative to said sleeve, and a connection for said barrel and sleeve to move corresponding ends of vsaid'corresponding narrow openings .towards said necks to permit) spaced sides of said last mentioned narrow openings to straddle said necks whereby spaced portionsv of said sleeve overlap said'iianges to prevent removal of said driving annoso A means from said sleeve, said ends-constitutingf means cooperating with said necks to limit rotational displacement ot said sleeve relative to .said casing when said ilanges are out of said barrel and interposed between said .shank and sleeve. i

39. In a lock.' a casing. a key receiving barrel rotatably supported by said casingy and comprising a reduced shank, a sleeve` rotatably mounted on said barrel and dening with said shank a gap. aloose connection ior rotatably driving said sleeve on said barrel, said sleeve having a `circumi'erentially arranged slot comprising an f expanded opening and oppositely extending reduced openings, tumbler means slidably guided in said' barrel, and spring controlled driving means slidably guided in said casing and projectable into said expanded opening and shank to prevent rotation oi' said sleeve and barrel, .said driving means comprising neck means and flange means. Bild bplrel adapted to be slightly rotated relative to said sleeve to place said driving means under stress,said tumbler means adapted to be actuated to raise s aid driving means out oi' said i shank to position' said flange means in said gap for slidably'lnterlocking a portion of said sleeve adjacent one oi said reduced openings with a portion oi said driving means to ypermit said barrel to be rotated relative tosaid sleeve when said driving means is out of said shank and cause said connection to rotate said sleeve upon rotationoi' said barrel, andmeans to limit unitary rotational displacement of said sleeve and barrel.

40. In a lockra casing comprising a shell and a drill `resisting bushing mounted on said shell, a key receiving barrel comprising a shank and .a drill resisting collar mounted on said shank, a sleeve mounted on said barrel and including a plurality oiIv spacedslots each having an expanded opening and oppositely' extending narrowed openings, aring rotatably mounted on said barrel in front oi' said sleeve to guard the latter, slidable spring controlled driving means movably guided insaid casing and adapted to be received by said expanded openings and shank in prevent roi tation ot said sleeve'and barrel. and tumbler means i'or'actuating said driving r'neans.

4l. In a lock, a casing, a key-leiving barrel..

a longitudinally split rotatable sleeve having a a: connection i'or rotating said sleeve with said barrel ati least in one direction relative to said casing during interlocking relation of said driving means and sleeve, and means to 'prevent further rotation oi.' ,said sleeve relative to said casing in said direction to preclude rotation of said barrel in a similar direction.

42. In a cylinder lock, a casingfkey rotatable means rotatably guided by said casing and v'including an expanded opening and oppositely arranged and spaced reduced openings; a driver slidably guided in said casing and comprising a reduced depending part, tumbler means slidably guidedin said rotatable means for elevating said driver above said rotatable means 751 uponainsertion of a key Properly mated with said penings oi! said sleeve to prevent tumbler means to rotate sam rotatable means to permit the latter to rotate relative to said casing. and spring means for moving said driver into said' expanded opening to lock said rotatable means against appreciable rotation relative to saidcasing, said rotatable means adapted to be slightly rotated in the locked 'relation'thereoi relative to said casing to slightly odset thelongitudinal axis oi' said dependingpart in respect to the longitudinal axis of said tumbler means, said tumbler means'in-the offset relation thereof in respect to said depending part adapted to be elevated to raise said means and dispose saiddependopenings extending in oppositedirections, a plumeans to prevent unitary.' rotation oi said plug Y rot-ation of said )barrel and sleeve, and spring means to hold said drivers-in contact with said tumblers, said drivers having depending parts',

said drivers havingintervening means slidably guided in said shank and adapted to' be intertudinally odset relation, of said tumblers and d rlversl to prevent removal oisaid drivers -i'rom said plug, corresponding narrowed openings of said slots having sides for stra'ddllng said .depend- 'ing parts to permit said sleeve to rotate relative 'to said drivers when said intervening means is interposed between said shank and sleeve, said dependingparts cooperating with corresponding narrowed openings of said slots to limit rotation 4 5. A In a cylinder lock, a casing, a key barrel having a shank, a member carried by said barrel and'provided with a curved slothaving an expanded opening and oppositely extending'nar- -row openings. means normally inl alinement with saldi-tumbler means and projectable into expanded to prevent posed between vsaid shank and sleeve in the longio5 ,of said barrel and sleeve in respect to said casing y in the longitudinally oii'set relation oi said tum-v rotauon'of said barrel and member and slidably guided in said casing and having means to closely Vstralddle a part of said member adjacent one of 'said narrow openings to prevent removal of said vdriving means from said member ln the offset relation thereof with'said tumblermeans, and tumbler means slidably guided in said shank for actuating said driving means.

46. In a cylinder lock, a casing. a sleeve compilsing a ciroumferentially disposed slot having an expanded opening and oppositely extending narrow openings, a barrel within said sleeve, driving means slidably guided in said casing and normally projectable into said expanded opening and barrel to prevent rotation of said sleeve and barrel and having means adapted to be removed from said barrel to interlock with a part of said sleeve adjacent one of said narrow openings. when said barrel is rotated in one direction and adapted to interlock with another part of said sleeve adjacent an opposite narrow opening of said slot to prevent removal of said driving means from said sleeve if said barrel be rotated ln a counter direction, and tumbler means slidably guided in said barrel for actuating said driving means.

47. In a cylinder lock, a casing, a plug rotatable within said casing vand comprising a slot having a central enlarged opening and communieating oppositely extending narrow openings,

tumbler means slidably guided in said plug, drivingv means slidably carried in said lcasing, and spring means for normally holding said driving means in said expanded opening .in the alined relation of said tumbler and driving means to lock said plug against rotation, said plug adapted to be rotated slightly in one direction to oifset said tumbler means in respect to said 'driving means in the locked relation of said driving means and plug to place said driving means under stress, said tumbler means in the stressed lrelation of said driving'ineans adapted to elevate the latter to permit a. part of said plug adjacent onev of said vnarrowopenings to rotatably interlock with a part of said driving means to prevent removall of the latter from said plug, said plug in the interlocked relation thereof with said driving means adapted to further rotate in said direction relativeto said casing wherebyy said interlocking re- `lation of said plug and driving means is continued,

one ofv said narrow openings having means cooperating with said driving means to limit rotational displacement of said plug in said direction during said interlocked relation.

, 48. In a cylinder look, a casing, a plug rotatable within said casing and comprising abarrel having a reduced shank, a sleeve surrounding said barrel and provided with a plurality of slots each having an enlarged opening and communicating andloppositely extending c lrcumferentially arranged narrowed openings, tumbler means slidably guidedin said barrel, driving means slidably carried i`n said casing and including lower por'- tions projectable into-said enlarged openings and shank to'lock said sleeve and barrel against .rotation when' said lower portions are alined with said tumbler means, said `plug adapted to be slightly rotated Iclockwise or counter-clockwise to place said lower portions under stress and offset in respect to said tumbler means, said lower portions each comprising a depending portionand a flange, said tumblers in the oflset relation thereof with said driving means ,adapted to actuate said driving meansto position said llanges severally `outof said shank and between said barrel and sleeve whereby' parts of said sleeve adjacent corresponding narrowed openings of said slots straddle said depending portions to permit rotational displacement of said shank relative to said casing when said fiangesare interposed between said barrel and sleeve, means'to rotate said sleeve upon rotation of said shank, and means to llimit unitary rotational displacement of said shank and sleeve.

49. In a cylinder lock, a casing having a longitudinally disposed bore, a key receiving plug comprislng a barrel rotatably guided within said bore, tumbler means disposed transversely of said' plug and slidably guided in said barrel, driving means slidably guided in said casing and normally in longitudinal axial alinement with said tumbler means, and spring means to hold said driving means against said tumbler means, said plug having a sleeve comprising one or more circumferentially arranged slots each provided with an enlarged opening andfoppositely extending narrow openings, said plug on slight rotation thereof adapted to .shift said tumbler means out of longitudinal axial alinement with saiddrivlng means whereby said enlarged openings are slightly displaced to permit the walls thereof to be in engagement with said`driving means to hold the latter under stress, said tumbler means adaptedto raise said driving means when said walls are in engagement with said driving means to position the latter out of said barrel to be received in part within adjacent narrow openings of said slots whereby parts of said sleeve adjacent said adjacent narrow openings receivingvsai'd driving means are rotatably interlocked withsaid'drivlng means to prevent removal of said driving means from said sleeve.

50. In a. cylinder lock,l a casing, a key receiving barrel rotatable within said casing, a sleeve mounted-on said barrel and having a plurality of spaced and circumferentlally arranged slots each comprising a centrally disposed expanded opening and laterally and oppositely extending narrow openings, a plurality of resiliently controlled drivers slidably guided in said casing and proiectable into said expanded openings and barrel to prevent rotationof said sleeve and barrel and each driver of said plurality comprising .a neck projectable into an adjacent narrow 'opening of said slots -to permit rotation of said sleeve relative to said casing andeach driver of said plurality comprising a iiange depending from and laterally extending be# yond a companion neck .thereof and projectable' outside of said barrel and underneath an adjacent narrow opening ofl said slots to prevent removal thereof from said sleeve, a plurality* of tumblers slidably guided in said barrel, a driving connection between said barrel and sleeve to rotate said sleeve upon rotation. of said barrel when said necks are within corresponding narrow openings1 of said slots, and means to limit rotation of said sleeve and barrel when the latter is rotated in one direction and when said necks are within-said corresponding narrow openings.

51. ma pmtumbier lock, a casing having a' bore, a key receiving barrel rotatably guided within lsaidbore, a/member within said bore and having slot means comprising expanded means and laterally extending constricted means, and pin tumblers comprisingdriving pins and tumbler pins, said driving pins being slidably' guided-in said casing and proiectable into said expanded means' and barrel to prevent rotation of said ba'- rel and having reduced means', said tumbler pins being slidably guided in said barrel for elevating said driving pins to permit said constricted means to move `towards and receive said reduced means whereby said barrel ma'y beY rotated relative to said casing, and means to prevent rotation of said barrel relative to said casing when said reduced means is disposed within said constricted means. 52. In a pin tumbler .1ock,'a casing having a L bore, a key receiving barrel rotatably guided within said bore', a member interposed between said casing and barrel and having slot means comprising expanded means and laterally extending constricted means. and lpin tumblers comprising driver pins and tumbler pins, said driver pins being proje'ctable `into said expanded means andbarrel and slidably guided in said casing and having reduced means and flange 175 means and said tumbler pins being slidably guided i'nsald barrel for shifting said iiange means and reduced means from said barrel whereby said Areduced means is received by said constricted means to permit rotation of said barrel relatiye to said casing and whereby said iiange means is disposed slightly below and adjacent said constricted means to cooperate with said -member to prevent withdrawal o'f said driver pins from said member. l l 53. In a pin tumbler lock, a casing having a v bore, a key receiving `barrel rotatably guided ,'within said bore and having a reduced shank, a member spaced from said shank and interposed between said casing and barrel and having slot means comprisingy expanded Vmeans and laterally extending constricted means, and pin tumblers comprising driver pins and tumbler pins, said driver pins beingprojectable into said expanded means and barrel and slidably guided in said casing and -having reduced means and iiange 4 means and said tumbler pins being slidably guid ed in said barrel for shifting 'said flange means and reduced means from' saidL barrel whereby cERTIIcr Patent l'No'. 2 ,111,098.

It isherebyy certified that error SAMUEL said reduced means is received by said constricted means to permit rotation of said barrel relative to said casing and whereby said ilange means is disposed between said member and shank and slightly below and adjacent said constricted means to cooperate with said member to prevent withdrawal o1' said driver pins from said member.

54. In a pin tumbler lock, a casing, a key receiving barrel rotatable within said casing, said casing and barrel having alineable bores, a member within said lock and having slot means comprising expanded slot means and constricted slot means, and pin tumblers in said lock slidably guided in said bores and extending through said bores and through said expanded slot means to lock said casing, barrel, and member together,

said pin tumblers each comprising a pluralityv of pins slidably guided in said bores, one of said `pins having a reduced part capable of movement insaid constricted slot means to prevent unlock ing rotation of said barrel.

In a' pin tumbler lock, a casing, a key receiving barrel rotatable within said casing, said casing and barrel having alineable bores, a member within said lock and having slot means comprising expanded slot means and constricted slot me'ns, and pin tumblers insaid lock slidably guided in said bores and extending through said bores and through said expanded slot means to lock said casing, barrel, and member together, said pin tumblex's each comprising a plurality of pins slidably guided-in said bores, one of said pins having a reduced part capable ofmovement in said constricted slot means to prevent unlocking rotation'oi said barrel, s aidlast mentioned pin having meansl 'for interlocking with said member at said constricted slot means.

, SAMUM.- SEGAL.

YYor CORRECTION.

l Maz-c1115; '1958, sEeAL. -A

appears the prntedispecifieation of'th'e .above numbered patentlre'qniring correction as follows Pagell, secofnd colinmi., 11ne'75, claim )45, before, 'u'driving" insert the words. comme. tuin; 'bler nennst.; page 12F, first column, line' 7., saineclaimI 1.5;?beforeA 1 "tum-f bier. insert said amilbefore` lslidaby'f .insertfbengg and the ,Said yLetters 'Patent shouid'be read with these corrections thereinvthat thesame nay-conform to .the record of the case .in the 'Patent soffice. r`

signegmi genialer-.hrs 126th eayprfipil, i. D'. y1958.V

Henry Yad ndale, i. Actinglcommissioner of Patents whereby said barrel ma'y beY rotated relative to said casing, and means to prevent rotation of said barrel relative to said casing when said reduced means is disposed within said constricted means. 52. In a pin tumbler .1ock,'a casing having a L bore, a key receiving barrel rotatably guided within said bore', a member interposed between said casing and barrel and having slot means comprising expanded means and laterally extending constricted means. and lpin tumblers comprising driver pins and tumbler pins, said driver pins being proje'ctable `into said expanded means andbarrel and slidably guided in said casing and having reduced means and flange 175 means and said tumbler pins being slidably guided i'nsald barrel for shifting said iiange means and reduced means from said barrel whereby said Areduced means is received by said constricted means to permit rotation of said barrel relatiye to said casing and whereby said iiange means is disposed slightly below and adjacent said constricted means to cooperate with said -member to prevent withdrawal o'f said driver pins from said member. l l 53. In a pin tumbler lock, a casing having a v bore, a key receiving `barrel rotatably guided ,'within said bore and having a reduced shank, a member spaced from said shank and interposed between said casing and barrel and having slot means comprisingy expanded Vmeans and laterally extending constricted means, and pin tumblers comprising driver pins and tumbler pins, said driver pins beingprojectable into said expanded means and barrel and slidably guided in said casing and -having reduced means and iiange 4 means and said tumbler pins being slidably guid ed in said barrel for shifting 'said flange means and reduced means from' saidL barrel whereby cERTIIcr Patent l'No'. 2 ,111,098.

It isherebyy certified that error SAMUEL said reduced means is received by said constricted means to permit rotation of said barrel relative to said casing and whereby said ilange means is disposed between said member and shank and slightly below and adjacent said constricted means to cooperate with said member to prevent withdrawal o1' said driver pins from said member.

54. In a pin tumbler lock, a casing, a key receiving barrel rotatable within said casing, said casing and barrel having alineable bores, a member within said lock and having slot means comprising expanded slot means and constricted slot means, and pin tumblers in said lock slidably guided in said bores and extending through said bores and through said expanded slot means to lock said casing, barrel, and member together,

said pin tumblers each comprising a pluralityv of pins slidably guided in said bores, one of said `pins having a reduced part capable of movement insaid constricted slot means to prevent unlock ing rotation of said barrel.

In a' pin tumbler lock, a casing, a key receiving barrel rotatable within said casing, said casing and barrel having alineable bores, a member within said lock and having slot means comprising expanded slot means and constricted slot me'ns, and pin tumblers insaid lock slidably guided in said bores and extending through said bores and through said expanded slot means to lock said casing, barrel, and member together, said pin tumblex's each comprising a plurality of pins slidably guided-in said bores, one of said pins having a reduced part capable ofmovement in said constricted slot means to prevent unlocking rotation'oi said barrel, s aidlast mentioned pin having meansl 'for interlocking with said member at said constricted slot means.

, SAMUM.- SEGAL.

YYor CORRECTION.

l Maz-c1115; '1958, sEeAL. -A

appears the prntedispecifieation of'th'e .above numbered patentlre'qniring correction as follows Pagell, secofnd colinmi., 11ne'75, claim )45, before, 'u'driving" insert the words. comme. tuin; 'bler nennst.; page 12F, first column, line' 7., saineclaimI 1.5;?beforeA 1 "tum-f bier. insert said amilbefore` lslidaby'f .insertfbengg and the ,Said yLetters 'Patent shouid'be read with these corrections thereinvthat thesame nay-conform to .the record of the case .in the 'Patent soffice. r`

signegmi genialer-.hrs 126th eayprfipil, i. D'. y1958.V

Henry Yad ndale, i. Actinglcommissioner of Patents

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