US1991151A - Apparatus for determining code of keys for cylinder locks - Google Patents

Description

H. HANSEN Feb. 12,1935.

APPARATUS FOR DETERMINING CODE OF KEYS FOR CYLINDER LOCKS 2 Sheets-Sheet 1.

Filed Jan. 5, 1931 BYM I INVENTOR A TTORNE Y5 Feb. 12, 1935. H. HAYNSEN Y Y 1,991,151

APPARATUS FOR DETERMINING CODE OF KEYS FOR CYLINDER LOCKS Filed Jan. 3, 1951 2 Sheets-Sheet 2 BY v . a L Q 2;

A TTORNEYS lowing claims.

Patented Feb. 12, 19 35 i Q t V v t y v r p 1,931,151 APPARATUS-FOR nr'rnammmciconnor L, KEYS FOR cYLI nEn LocKsj Herman HansemNewYork, N. Y.',' assignorftd g Francis'JKeil & Son,' Inc.', a corporation of New -xYork t: Application Jan s-ye, 1931, sw rm, 506,374)

' 33 Claims: (ores- 174) g "This invention relates togan apparatus for-"de certain features oi my invention, mayl at this termining the code of keysy for cylinder locks. point: he ,noted that locksmiths are frequently OIIEDf. the objects of this .iIlVGIl'tlOIlIlS to procalled upon to, fit a key to a c linder lockoperat vide asimple andpractical apparatus for, deing mechanism and according to ce'rtain past ,5 terminingl. the code of the key for operatinga practice such fitting of a new keyhas beenall cylinder lock sothatakeymay be madeupfrom greatly facilitated bythe fact that thelock mecha 'keymblank according to the, code thus asceranism itself has in many instances been stamped tained. Another object 51130 provide anappara with thecode 'numbers oi: the corresponding ,keys. tusoi the 1 above-mentioned character that, can lwhilethis has facilitated the work of the-lock 1 be:manipulatedsandoperated in practice speed smith, it has at the same time :made all 'too v ily with a1high degree of. convenience, accuratereadily available to unauthorized persons the 1y, andiinexpensively; Another object is to proexact informationgii'om which a key to fit that vide an apparatus or the above-mentioned charparticular lock can be reproduced inasmuch as it 1 acter that will be of simple and inexpensive coniis a relativelysimplematter tQOllt the necessary struction, small and compact, thoroughly accudeths off notchesinQa cylinden-key where the 5 rate and dependable in action, and capable of code number for that key is known. .,'I?his def great ease and speed of manipulation. Otherob- .ciency, has patricularly made itself felt mane jects will be in; part obvious or in part pointed automobile field; out hereinafter. In accordance with certainlfeatures; of my in- The invention accordinglyconsists in the rea vention, I avoid the necessity -;ot;,havingto stamp tures of construction, combinationsof elements, the key code: number ontthe lock mechanism itand arrangements of. parts, all as willbeillus- ,selfand I have providedamethod and apparatus trativelyidescrib'ed herein, and the scope of the for determining the key'code numbersfromthe application of which vwill be indicatedin thefolloclcmechanism so that-the flagrant display of In the accompanying: drawings in which is is not at allnecessaryu In-casepa new key has shown-a preferred form of thevariouspossible tOvbe" provided, my-'invention provides a con1- embodiments of the mechanical features ofmy venient'niethod and apparatus for determining invention, the code number of the key to-suit that lock.

,30 Figure 1 is a vertical central sectional view of Referring now to the drawings, and more par-- the line 5 50f Figure 1;

"a cylinderlockmechanism; I ticularlyto Figures 1-, 2, l and 5, I-haveshown "Figure 2 is a planview of akey suited to'opat 10 what may b'econsideredto be a door or the crate the mechanism of Figure 1;; 1 '3 liketowhich is attached, in any suitable manner, Figure 3is a'plan view ofian implement for acylinder lock-operatingmechanism'whichmay thje code' number on pthe lock mechanis'm-itseli g5 preparing the lock mechanism for the applica- "include a casingll within which is rotatably 35' r mounted the key cylinder- 12,,the latter having Figure 4 is an end elevationalyi'ew, as .seen suitableconnection as by the bar 13, to thebolt from-the rightof Figure 1; V i l orlatch mechanismqmotshown) itselt 1 Figure Bis a vertical cross-section, as seen on i The key cylinder l2 is provided witha keyslot i I 91,4 (seeIFigures-land 4) which, in endview or in Figure 6 is a side elevation of the apparatus cross-section, maybesuitably shaped, as :byipr oemployed in my method; l '1' jections 14. 14* etc., to'prevent' the insertion Figure '7 is an end view, asseen from the left therein ofa key; unless the latter has appropriate of Figure 6; longitudinally extending-grooves;within which tion of the apparatus;

' FigureB is a view of the apparatus similar to these projections are received; 'Normally. the key 45" thatofiFigure =6; but showing itsiapplication ini- :cylinderlZ-is preventedrfrom being rotated tolopa tially to the cylinder lock-operating mechanism a crate thelock or latch mechanismbykey-engag- 'ofFigure 1 in one step of myprocesaand ing; devices or tumblerswhich maybe of; any Figures 9, l0 and. ii are views similar'to that suitable numbcr land which ;are illustratively 5 01" Figure 8, illustrating a'few'oi the subsequent shown inthe drawings asfive' in number; these ,50

steps ofmymethod. H tumblersar shown in Figure 1 at15;-1'6, 17,

-"Similarreierence characters refer to similar l8,,and 19. f H

' :parts throughout the several views of the drawa- Tumbler 115E 19 amay, insoiar asscertainwf ea- 'ings; 1 1 i \tures. ,ofymfi inventionare concerned, take lany As.;conducive to a clearer;understanding-pr suitable crappropriateiorm, but they1 are .pref

30 this relation is 56 generally inline with 14, is to 70 crating bar 13 tratively shown in reference may again be made to Figure 5 wherein wafer 15 will be seen to be of a generally rectangular shape slidably received within a slot in the J key cylinder 12. The upper and .lower ends, as seen in Figure 5, of the wafer 15,- are curvedto 15 substantially the same radius as that of the key cylinder 12, the longest '15 being notgreater than cylinder 12. If, therefore, wafer 15, and, with it the reniaining'wafers of the lock mechanism,

dimension of the wafer 20 is positioned so that its end curved edges coincide with the outer cylinder surface of key cylinder 12, the latter may be rotated with respect to the easing 11. It is, of course, the function of the key thus toposition these wafers to permit this rotation to take place;

7 Normally, however, the lower ends of the wafers i are received within a longitudinally extending slot 25 in the casing 11; this relation of the parts is clearly shown in both-Figures 1 and 5. Normally, maintained by means of a spring 26that forces the wafer 15 downwardly and holds it in the position shown in Figure 5. Spring 26 is preferably a helical spring oneend of which bears against and is held by a lateral projection 270i the wafer 15, this projection 27 being received in a suitable cut away portion'28 in the key cylinder 12, while the upper end of the spring 26 is received within a bore 29 in thekey-cylinder 12, Ithe spring being held in a suitably compressed state by means of a small screw 30 threaded into the upper end of the bore 29. A similar spring arrangement is, of course, associated with each of the'remainingwafers; v

, As is better shown in Figure 1, wafers 15, 16,

" 17,18 and 19 are slidably carried in'suitable guideways or slots 20, 21, 22, 23 and 24, respectively formed in the key cylinder 12 and are provided with rectangularly shaped apertures: 31, 32, 33, 34'and35, respectively, these apertures being the key' slot 14. In Figure I 5 the rectangularly shaped aperture 31 of wafer 15 is better shown. These apertures are of varying dimension in the vertical directiomas viewed in Figure 1, and, with all of the Wafers pressed downwardly by their respective springs so that the lower edge faces thereof abut against the bottom' wall of theslot or channel 25 (Figures 5 and 1) in the-casing l1, the upper portions of the wafers present'or form projections of varying o lengths directed downwardly into the key slot 14 in the cylinder 12. It is by these projecting portions, of different lengths or of different combinations of diiferentlengths (or depths) that a suitably notched key, when inserted into the key slot lift all of the wafersthroughout the same distance and, moreover, throughout such a distance as will just lift the lower portions of all of the wafers out of the slot or channel 25, 7 thus to permit thefkey cylinder 12 andlock-opto be rotated with respect to the casing 11. i r a Withalock having five :wafers, as is illus- Figure 1, a. key having five stations, with anotch of suitable depth at each 75 station,"is' necessary, and in Figure 2 I have shown the diameter of the key being spaced vertically in plan view a key 36 with the stations indicated by the numerals '1, 2, 3, 4 and 5.

For purposes of illustration, I have shown a lock construction in'Figure 1 in which the wafers are so shaped that, to whose code number is 33511 is provided; this means that wafers 15 and 16,,corresponding to stations 1 and12 of the key '(see Figure 2) are the same, the wafers l8 and 19 corresponding to stations 4 and 5 on the key are also the same, and that'wafers 18 and 19, corresponding to stations 4 and 5,,have upper portions projecting into the key slot by a distance of one unit, wafer 17 has an upper portion thus projecting into the key slot 14 by a distance or depth of five units, and wafers 15 and'lfi have projecting portionsof three unitslength. a 7 Or, stated differently, in order to' lift all of these wafers or disks, as they are sometimes called, throughout the same distance, a key, like that of Figure'2,*must'be provided in which the notches corresponding to stations land 2 must be three times as deep as the notches corresponding to stations 4 and 5 and the notch corresponding to station 3 must be five times as deep asthat of station 4 or 5; in Figure 2 I have shown these notches proportioned in substantially this way with respect to one another. V o 1 The units represented by the individual numbers making up the code number of the key may vary depending upon the manufacture or style of lock or the like and purely by way of illustra-- tion these units of measure may, for example, be

0.012 inch; that is, referring to Figure 2, the f 2 'arefeach 0.036 inch' notches of stations 1 and in depth, the depth of the notch ofstation 3 is 0.060 inch, the depth of the notches of stations 4 and 5 is 0.012 inch; It is to be understood, however, that these units of measureare purely arbitrary and, in fact, vary with the code by any particular lock manufacturer;

Considering now how, in accordance'with certain features of my invention, I proceed to determine the code number 33511 of the lock mechanism of Figure 1,"I first run into the key slot 45 14 an implement like that shown in Figure3; this implement has a handle portion 37, a restricted operate the look, a key adopted shank 38, and a downwardly rounded end portion 39. By running this implement back and forth along thekey slot 14 so that the end portion 39 rides along the bottom edge of the key slot,'all of the wafers 1519 are positively forced downwardly into their lowermost position. The various springs 29 (Figure 5) should normally force these wafers into their lowermost position butthe various parts sometimes stick, due to various factors that are sometimes hard to eliminate, but, by means of the implement 37-'39, I am enabled to insure that all of the wafers are properly positionedfor subsequent determination of the depths thereof. 7 V.

In Figures 6 and 7 I have shown apreferred form of mechanism for thus determiningthe depths and before considering the manual manipulationr and theoperation thereof, it might first be pointed out that this mechanism includes a plate-like member 40 provided at its left-hand end with a straight-edged prong 41 whose lower edge face 42 is exactly at right angles to the left-hand end face 43 of the member 40. Projecting-to theleft from the end face 43 are two vertically spaced projections 44 and 45, these projections "having a width in 'a'horizontal' direction and such that they may be 7 snuglyreceived Within the right-hand end portion 14 of, measurement; corresponding to the particular code; Bearing in mind the code of the lock mechanism, as was described in detail hereinabove, and recalling that the code number corresponding to wafer 15 is'f3, this resetting positions the gage 54 in substantial alinement with the lower edgeof the upper portion of the wafer 15, as is clearly shown in Figure 9.. The operator their attempts to move plate 47 to the left, and, in' view of the above-mentioned alinement, the

' plate 47 moves, to the, left, gage 54 passing through the rectangular 'openingin wafer 15 and thus by-passing the key-engaging device 15; whereupon furthenmovement ishalted by pawl 62 sliding into notch 57 corresponding. to station number f1- of thekey. The relation of the parts atthis stage is fully shown in Figure and from the graduations 56. the operator parts in the position shown .in1Figure-10, he

knowsthat the codenumber is .3 and from the notchinto-which the pawl 62 has passed, he knows thatthiscode number 3 corresponds-to stationnuinberffl on the key, the pawl thus acting also as an indicator of the station;

"The operator then proceeds in a similar mannerto; determine the codenumber of the next station or notch of the key-corresponding to wafer 16"and as'a first step, starting with the swings operating arm '55 downwardly into the number fli position, asis indicated by the .graduations 56 and as is shownin Figure 11. Thisoperation*resultsin lifting pawl 62 outof notch 57', thus'permitting movement of plate 47 and of gage 5 4in a direction toward the left-until gage member 54 abuts against wafer 16 which,

itfwill be recalled, is shaped like wafer and corresponds to'a code number"3.-for station or notch number-2; on thekey, The operator then repeats the steps outlined above and has the code .40

number of wafer 16 indicated to him by one of. the graduations56 and thestation number indicated by oneof the'notches with which pawl 62coacts,

f These steps are repeatedfor each succeeding wafer and bysuccessive repetitionsof the above- ;mentioned steps; the operator will find that pawl 62 slides into notch 58 (station 2) when the 1 arm 55 stands at the indication 3, that pawl.62

of lock, the locksmith thereupon'proceeds to cut the notches of the requisite depth for the corresponding stations of the key, all as will be clear fromaiconsideration of Figure 2.

It will thus be seen that I have provided in my invention an apparatus in which the various objects hereinbefore noted, together with many thoroughly practical advantages, are successfully achieved. It ,willfbe-seen that the mechanism is simple, compact, and substantially fool-proof and also it'will be seen that the apparatus of u .my inventionis well adapted'to meetthe varying. conditions of practical use.

Iclaimp V r In a device .of the character described, in

to be engaged and lifted by a key;

any of said devices of, said gagebeing 'versely of; the line of -movement of said slidable combination, means having "a portion insertable into thekeyxslotiof a key cylinder, means supported by-an'd movable with respect thereto, in

a direction along the line. ofthe tumblers pro- J'ecting into, the key slot, a gage adjustably carried by said movable means andadapted'to befp'ositioned at any one: of a plurality of different heights relative to the line of movement ofsaid movable means,.indicia for indicating the adjustment of said gage, and means for preventing movement of said movable means with said gage in a direction inwardly of said key slot by a distance greater than the spacing between two successive tumblers .in said key cylinder;

2. In a device of the character described, in

combination, means having a portion insertable into the key slot of a key cylinder, means supported by and, movable with respect thereto in a direction along the line of the tumblers projectinginto the key slot, a'gageadjustably carriedby said movablemeans and 'adaptedto be positioned at any one of aplurality of different heights relative to'the line of. movement ofsaid movable means, indicia for indicating the adjustment of said gage, and indicating means for indicating the station of a tumbler by-pas sed by 7 said gage.

3. Ina device of the character described,cin

combination, a frame member having. means adapted to fit'into a key slot in a key cylinder without obstructing access to .the devices..pro-- J'ecting into said key slot and that are intended to be engaged and lifted by. a key; a member slidably carried by said frame and relatedxto the latter for movement. in a direction lengthwise of said key slotya gage carried. by said slidable member andadapted to enter the key'slot'and engage any of said devices positioned in advance thereof, said gage being 'shiftable in a direction transversely of the line of movement. of'said slidable member to cause said gage to by-pass an obstructingkey-engaging device; and indicia for indicating the by-passing height of said gage; i 4. In a device of the character described, in combination, a frame member having means adapted to fit into a key-slot in a key cylinder without obstructing access to the devices projecting into said key slot and that areintended a member slidably carried by said frame and relatedrtoi the latter for movement in a direction lengthwise 'of said key slot; a gage carried by said slidable memberand adaptedto" enter the key .slot and engage positionedin advance thereshiitable in a direction transmember v to cause said gage to by-pass an :ob-

structing key-engaging device; indiciafor indicating the by passing height of said gage; and .meansoperating upon said slidable member for preventing saidgage from by-passing a succeeding key-engagingdevice;

5. In a device: of the character described, in

combination, a draineqmember, having means adapted'to fit into1a keyislot in a key cylinder without obstructing access to the devices pro- ,jecting into said key slot andgthat'are' intended to be engaged and lifted by akey'; a. member slidablycarried by said frame and related to the. latter for movement in 'a direction lengthwise of said key slot; a gage carried by said slidable memcf, said gage being shiftable in-a direction transversely of the lineof movement of said slidable V ber and adapted to enter the key'slot and engage anyof said devices positioned in advance there- Len-net member to cause" saidj gage to by-pass 1 an ob-V 6i In --a*device of the character "describedfin cornbination, a frame? member havingmeans adaiit'ed toz fit into a keyslot in a key cylindef without bbstructing access to the devices -pro-' iectin'g'mto said *keyslomand that are intended ito be engaged and lifted by a; key;; a member slidably; carried L by said frame. andrelatedto the latte'rlr formovement in l a direction" lengthwise membe and adapte'd to enter" the key slot and engage any: of saiddevice's positioned in advance thereof, 1 said gage being 5 shiftable in" transversely ofthe line'o'f movement of' saidislid ableime'mbefto cause said gage to by-passtan obstructing keyengaging device; indicia for indi'c atin'g th Icy-passing height of said--gage;

' m'enibe'r relative to said fraine to take place in steps corresponding each to a key-engaging die-'- I vice intsaid key cylinder; and indicating -means foi indicating said steps. l i L'Ii'In'; a device of the character described, in" combination, a .frame member having means adelptedto fit' into a key islot ina keycylinder' with-out obstructing access 'to the devices projectinginto said key? slot and that are intended toibevengaged'aandilifted by a key a member slidably carried by said frame and related to'the latten fonzmovement:.in a direction lengthwise ofisaidikey slot a .lgage icarriedtby. said slidabl'e member andadapted toenter the key slot. and

engage-: nny:.;of said devices positionediin advance thereof; said.gageabeingxshiftable ina direction transversely? ofithe line of movementfof said slidableimember tozcause saidigageito .byi-ipass an obstructingi key-"engaging. device; indicia lfor in-.- dicatingllthe by-ipas'sin'g height of said: gage; :and' me'ansz;controlled'bysthetposition of said gage lfOI. causing the-:1 movement aof-w said" slidable member? withithex'gager carried-?thereby-to take" place: stepby-step.

a8. L81? device?- tofir .the character. described; i in combinatiom 5a .frameihmember :having :means: adaptedrtoazfitiintoia ikey 2s1ot:in. a :key cylinder withoutiobstructing accessito the zdeviceslprlojecte; ing'r'into saidiske'yslot andzrthat are 'intendeditoi bet engaged- "and; lifted by": a: key} aimember slidahiy cairiedsibyl said" Fframej 'and related'cto r the latter for-movement in' 2a 'direction lengthwise 0f: 5 said key-slot; wakga'ge'zcarried "(by said: islidable memben iandaadapted"to enter .the key-slot and engageianm-of saididevices'zpositionediinradvanceL thereonsaid 1 gage fbeing :shiftable in la :directi'on transversely of the"1ine ofamovement of :said slidable cmen'iber to :cause saidxgage tofib'y'- pa:ss an= 1obstnuctingztkeysengaging device; vindicia fori indicating the lay-passing height tofzsaid gagei an'iifaspawl :icarriedtb saidislidable member, said fnameishaving :a; :plurality .of notches with which Z saidrzpawl:mayicoactnone for teach key-gengaging deviiceeinr'said keyicylinder andtspacedi siibstan tiallyrilikezsaid deviceslare 'spaced, said pawl rid 1 ingmoinpletelyrintoia notch :only-upon completion Ofithi byepassingmovement: of said gage.

iQEIIXI awdevi'ce of the character described, in

combination, a frame men bei having means adaptedf to fit' intoi a key fs'lot'fina *key cylinder. withoutobstructing access to the de'vices" p r dj eat- 1 dicating the Icy-passing height having" aplurality" of notches" with which *said irection' iv an adjustable gage 'ca ffi transversely of the line of" movement of saidjslidi sneez ng";"key ngaging device? pawl a coactfonejfoi"cach keyengaging 'd'ev i d l ey cylinderand spaced substantially devices are* spaced','j said} pawl 1 idin'g cc'rn'yiletly iiito a notchonly upon completion oi the {by nass'ingf o ement of said gage; and m' eans responsivefto resetting of said gagemem b-er} fordi'sengaing said pawl from" a notch;

10f ln' a devic'e; of the character describedfin, eembinatiorfi-agpair'of members 'oneof-whichfis means for causing the movement of -sa;1d' slidab1e adapted to be alined with respect' to the'key'slot in-akeycy1inderandthotherof which is slidablycaifi'ied by'" Samara-mentio d 'membei 'for movement a direction jlengthwise of the 'key sl'otjone ot-said membe s having a" plurality {of notches; a; pawl ca riiedby theotherof'sa-id nem-f bets and coacting' successivelywith said mummy; of" notches in thePotherof said membeis upon re lative sliding movement-between 'said m enibers,

I)" one'notch-fmieachkey-engaging-defd cililldef and sa'idxnotches being imilaily as said-devices are spacedy and bel -and adaptedto proje'ct' into the key slot -to; caiise -any one device 5 inhe latter to ObStfilQt' movement of said slidable-Tmernbei'; saidpavv' l" and said notches paitaking of 'rlati've' mo vemenit; as said sli'dable member slidjes relative to the other member :d'said pawlii iding into a notch' upon the completion "of the rel ative' 'sli ding movejf dicia for inment between said menibetswhen-said gage has 111 In' a *device; of the charater described-,- in combination; a fipair df m mber-530m ofwhich adapted to b 'alin'ed vvith;"respe'ctfto the 'key sl'otin a key cyliifidi and the-other"dfiWhiChiSblidably ca'i ried by said first mentioned "member-for V movement" in" a direction' lengthwise of the keyslot, one ofsaidmembers having 'a mummy--02;

notchesa a patvl'carfied by thef'othef o f s'aid mem' hers and coactingsuccessively with said" "oliiralits) of notchestin the other "of sai'd' menibeisiiponi relative-sliding :movement' between said inernb ers there being onenot chfor each key-engaging -d vieein saidcylinden and said notches be'ing spaced iniilarly as said devices are spaced? and:

an adjustable- 'gage'carried by-said slidablemembei a'Ii'd adap d *to pi dject into the 7 key-slot =to cause any one device; in ''the' latter 'toobstruct m vementtr-samsnuame membmaiu-pam and notohes partaking 'of relative r'nove'ment 'as sai slidable men bei' slides relative to t e other 5 theieomp 'enqn of the reianve sliding "movement between-said? members whenjsaid gagehas been v meinber and-said -pavfl riding into a notch upon adjusted o bypass an obstructing'key-engaging' I devicez and means foi indicat-ing theadjustment 1 of said gag'ey a :1'21 Inf'a device of the charac'teifl described; in

vol"

combination; a pair ofnnenibersone of which; is j adapted to bealined with *respect' t0 thei'key slot in a key cylinder' andf'the{other 'o'f vvhihis slid v, ably carried by said firstmentioned"memberfor movement in a direction lengthwise of the key slot, one of said members having a plurality of notches a pawl carried by the other of said members and coacting successively with said plurality of notchesin the otherofsaid members ,uponrelative sliding movement between said members, there being one notch for each key-engaging device insaid cylinder and said notches being spaced-similarly as said devicesare spaced;

and an adjustable gage carried by said slidable member and adapted to project into the key slot to cause any one device in the latter toobstruct movement ofsaid slidable member, said pawl and said notches partaking of relative movement as said slidable member slides relative to the other member and said pawl riding into a notch upon the'cOmpletion of the relative sliding. movement between said members when said gage has been adjusted to by-pass an obstructing key-engaging device; and means responsive to a resetting of said gage for disengaging said pawl'fro m the notch which it has entere .13. In a device of the character described, in

combination, a pair of members, one of which is adapted tobe alined with respect to the key slot in a key cylinder and the other of which is slidably carried by said first-mentioned member for movement in a direction lengthwise of the key slot, one of saidmemb'ers having a plurality of notches; a pawl carried by. the other of saidmembers .and coactingsuccessively with said plurality of notches in the other of said members upon relative sliding movement between said members; there being one notch for each key-engaging device in said; cylinder and said notches being spaced similarly as said-devices arespaced;

and an adjustable gage'carried by said slidable member and adapted to: project into the key slot to causeany. one device in the latter to obstruct 40 movement of said slidable member, said pawl and said notches partaking of relative movement as said slidable member slides relative to the other memberand said pawl riding into a notchupon the completion of the relative sliding movement between said members when said gage has been adjusted to by-pass .an obstructing key-engaging device; and direct-reading graduations for me dicating the adjustment of said gage.

14.; In a device of; the character described, in

combination, a; member adapted to be alined with a key slot in a key cylinder; a gage adapted to entersaid key slot; means guiding said gage for movement relative to said me'mber and providing path of movement for said gage which is. 5

' ing into said in line with the key-engaging devices projectkey slot; means mounting said gage for adjustment in--a direction so that said gage can be given a position such that it may by-pass a key-engaging device; andindicating means for identifying thestation of the device by-passed v andalso the adjustment of said gage.

15. In adevice of the character described, in

combination, a. member adapted to be alined with a key slot in a'key cylinder; 'a gage adapted to (enter said key slot; meansguiding said gage for movement relative to said member and providing path of -movement for said gagewhichis in-line vwith-the key-engaging devices projecting into saidrkey slot; meansfor adjusting said gage so that it may by-pass a key-engaging device; means for causing the movement of said gage along said path'tov take place in steps, one for each key-engaging device; and means controlled by a, resetting 'oflsaid gage for permitting asucceeding step of movement to take place.

..-l6., Ina device'of the characterdescribed, in combination, a memberadapted to be alined with a key slot in a key cylinder; agage adaptedto enter. saidkeyslot; means guiding said gage for movement relative to said memberand providing path of movement for said gage which is in line with the key-engaging devices projecting into said key slot; and means for adjusting said'gage so-that it mayby-pass a key-'engaging-device.

17,111 a device oithe character described, in combination, a member-adapted to bealined with a key. slot in a key cylinder; a gage adapted to entersaid key slot; means guiding said gage-for movement relative to said memberandproviding path of movement forsaid gagewhich is inline with-the. key-engaging devices projecting into said key slot; means for adjusting. said gage so that it may. by-pa'ssa key-engaging. device; and step-by-step mechanism controlled by said gageadjusting means ior, .causingthemovement of said gage along said path tov take place inlsuccessivesteps. f.

18. In a device of the characterv described, in

combination, a member adapted to be alined with a key slot in akey cylinder; a gage adapted to enter said key slot; means guiding saidi gage. for

movement relativeto said memberand providing path of movement for said gage which is in line with. the key-engaging devices projecting into said key slot; and indicating means movable manually and adapted to adjust said gage so that it will by-pass an obstructing key-engaging de-- V108. 19. In a device of. the character describechin combination, a member adapted to be alinedwith respect to the key slot ina key. cylinder, amemher slidably related to said 'first member for V movement relative thereto in a direction lengthwise of the key slot, a gage carried by saidsec 0nd member and adapted upon movement of thelatter to enter saidkey slot along a path such that movement of said gage is obstructed by the key-:

engaging device or devices projecting. into the key slot, and means for manually shifting said' gage to cause it to by-pass'a projecting keyengaging device. a v I 20. In a device of the character described, in combination, a member adapted to be alined with respect to the keyslot in akeyv cylinden'a memberslidably related .to. said first 'member' for .movement relative thereto in a direction lengthwise of thekey slot, a gage carried by said sec- 0nd member and adapted upon movement. of the.

latterto enter said key slot along apath such that movement of said key-engaging device or devices projecting intotheikeyv slot, means for manually shifting said gage to cause it to by-pass a projecting key-en gaging device, and means responsive to the relative sliding movement between said twomembers for identifying the station of akey-engaging device by-passed. v 21. In a device of the character described, in

combination, a m'ember adapted to be alined with I 65.-

gage is obstructed by the gagehas been moved r. to just by pass-akey-engagingdevice for indi- 31. Ina device of the'ch'a'racter described, in combination a member having a pronglike part adapted to enter and bottom in the key slot in a' key cylinder and having means for limiting and fixing'the extent of entry of'said part into said slot, said member being elongated, a gage;

an elongated -member, means slidably interrelating said two members for movement of said second-mentioned member in a'direction lengthwise of the key slot, means movably mounting said gageeonto said second-mentioned member so that,

as said second-mentioned member is slid relative to said first-mentioned member in a directiori toward the key slot, said gage enters the latter 'tioned member for identifying the station of a key-engaging device by-passed by said gage.

32. In a device of the'character described, in combination, a pair of members adapted upon bodily movement in the direction of the key cylinder axis to enter the key slot in a key cylinder, means mounting said members for relative movement with respect to each other in a direction toward or away from each other so as to cause one of said members to by-passa an obstructing key-- engaging device projecting into the key slot, said mounting means including means wherebysaid one member is movable in a general direction lengthwise of the other member, whereby the'bypassing of saidfone member of an obstructingplace by movement lengthwise thereof relative to said other 'membe'ri' key-engaging "device takes and indicating means responsive to relative movement between said members toward or away from one another for determining the projection into the key slot of a by-passed key-engaging device? 33. In a device of the character described, in combination, a pair of members adapted-upon bodily movement in the direction of the key cylinder axis to enter the key'slot in a key cylinder; means mounting said members for relative movement with respect to each other in a direction toward or away from each other one of said members to by-pass an obstructing key-engaging device projecting into the key slot,-

said one member is movable in a general directhe by-p'assing of said one member of an obstructso as to cause 1 20' said mounting. means including means whereby ing key-engaging device takes place by movement lengthwiselthereof relative to said other member, and means responsive to said second-mentioned relative movement between said members for identifying the'station of the device by-passed.

HERMAN HANSEN.

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