US2289234A - Combination lock - Google Patents

Description

July 7, 1942. H. E. BERGGREN 2,289,234

COMBINATIQN LOCK l //v VEA/70H XMWMM/M' July 7, 1942- H. E. BERGGREN 2,289,234

n COMBINATION LOCK FiledV ngc. 1o, 1940 s sheets-sheet 2 EL .8 9 ,20 TEL .zo 44,'

July 7, 1942. H. E. BERGGREN 2,289,234

COMBINATION LOCK Patented `Fully 7, 1942 gnam COMBINATION LOCK Hernfrid Evald Berggren, Stockholm, Sweden Application December 10, 1940, Serial No. 369,453

In Sweden November 21, 1938 22 claims. (c1. 711-305) The present invention refers to locking means with an operating member 'movable only by oscillation for the adjustment of the4 tumblers and provided for this purpose with carrier members,

for instance in the form of teeth, pins orthe eration of the bolt of the lock. Hereby it Will be found possible to operate all of Vthe members of the lock by means of a single operating member.

Locks having operating members provided with the means referred to by the present invention are particularly well adapted through this construction for being operated by means of a finger dial, for instance of the type disclosed in` my Swedish Patent No. 90,026. The arrangement is believed to be advantageously serviceable in safev" locks as well as in ordinary door-locks, such as hall locks or automobile locks. As the arrangement is also comparatively simple, the manufacturing costs of these locks are believed to become rather low. Moreover, the locks in question become very much easier to manipulate than the locks of earlier constructions, without their safety in operation being reduced in the least.

The invention will be described more closely in the following with reference to the accompanying drawings which illustrate three forms of embodiment of the invention, further features characteristic of the invention, and the advantages involved thereby, being then also set forth.

In the drawings, Figs. 1 to '7 show a rst embodiment of the contrivance as applied to a safelock, the oscillating operating member of which is provided with carrier teeth secured to an eccentrically mounted shifting'or setting shaft.

Fig. l is a vertical section of said lock on line 1 1 in Fig. 2; g

Fig. 2 shows a horizontal section of the same lock on line II-II in Fig. l

Fig. 3 is a vertical section of the lock on line IIL-III in Fig. 2;

Figs. 4 and 5 show the two constituent parts from which a tumbler is composed;

Fig. 6 shows a spacing and bearing washer for the tumblers;

Fig. 7 is a View to a somewhat smaller scale than that of the other figures, of a nger dial for oscillating the operating member.`

Figs. 8 to 11 show a second embodiment in which the carrier teeth of the operating member are arranged to be shifted by radial displacement under the influence of excentrically arranged pins on a centrally mounted shifting or setting shaft.

Fig. 8 is a horizontal section through the central shaft of the operating member on line VIII-VIII in Fig. 9;

Fig. 9 is a vertical section on the line IX-IX inFig.8; i

Fig. l0 is a vertical section on line X-X in Fig. 8

Fig. 11 is a side view of a ratchet Wheel and pawls for turning the shifting or setting shaft;

Figs. 12 to 18 show a third embodiment, the operating oscillating member of which is provided with carrier teeth secured to a shifting or setting roller excentrically mounted outside the tumblers;

Fig. 12 is a sectional front view with a detail partly broken away;

Fig. 13 is a section on line XIII-XIII in Fig. 12;

Fig. 14 is a section on line XIV-IGV in Fig. 12;

Fig- 15 is a view of the detail mutilated in Fig. 12;

Fig. 16 is a sectional View of the detail represented in Fig. l5;

Fig. 17 shows a portion of a safe-,door and the handle of the lock with appurtenant parts;

Fig. 18 is a sectional View on line XVIII-XVIII in Fig. 17.

The first embodiment shown in Figs. l-'7 relates to a lock for safes, safevaults or the like. In the drawings illustrating this lock, as well as in the following embodiments, only those details are incorporated which are considered necessary for the elucidation of the invention. The lock disclosed, which is fastened to the inside of the safe-door 2i) by means of bolts, is provided with d a lock-housing formed by a U-shaped part, and

the Shanks 2| and 22 of this U-shaped part, which form the vertical lateral walls of the housing, are connected by means ofthe front side 23 secured to the door 20 by means of bolts. At the top and bottom, the two plates Ztl and 25 form the horizontal walls of the housing, said plates being inserted in the grooves provided in the side-walls. At the rear, the housing is closed by the cover 26 secured thereto by means ofscrews. Abolt 21, which is shown in thelocking position in Fig. 1, is adapted to be displaced horizontally in slits provided in the vertical side-walls 2| and 22. The bolt is provided with an obliquely positioned slot 28 engaging a pin 29 which extends from the free end of a lever 3D which is pivoted about the horizontal pin 3|. The latter pin which is parallel to the pin 29 extends from the front-side 23 of the lock housing. Projecting from the lever at right angles near the free end thereof is a downwardly directed arm 32. Upon displacement of the bolt 21 from the locking position shown the slot 28 will press the pin 29 and thus also the downwardly directed point of the lever 32 downwards, when the tumblers of the lock permit such a movement, that is to say, when they are properly adjusted to effect unlocking. These tumblers, which are four in number, consist each of two annular parts punched out of pieces of sheet metal of the same thickness, these parts being designated, counted from the cover 26, by 33-34, 331-341, 3311-3411, and 33111-34111 respectively. The two rings 33 and 34 of the first mentioned tumbler are shown in plan views in Figs. 4 and 5 respectively, in vangular positions corresponding to their initial positions. The ring 34, which forms the tumbler proper, is provided in the outer circumference thereof with a rectangular notch 35, and has on a circle near the inner peripheral portion thereof twelve uniformly distributed holes 36. The ring 33 combined with the ring 34 is intended for turning the latter in the one or the other direction for the purpose of adjusting the same into the unlocking position or for restoring the same into the initial position. In eiecting the firstmentioned adjustment the ring 33 is turned in a clockwise-direction by the tooth 31 extending from the inner peripheral portion thereof, when a carrier tooth projecting in the same plane from the operating member is brought into engagement therewith, whereas when restored into the initial position it is turned in the opposite direction by means of the arm 38 extending from the outer peripheral portion thereof, when the arm is actuated by the restoring rod 64 turning in a counter-clockwise direction, as will be described more closely hereinafter. The ring 33 is provided with three axially projecting pins 39 at a mutual angular distance of 120 and located at the same radial distance from the center as the twelve holes 36 in the ring 34. They may thus be fitted into three of these holes, the rings 33 and 34 being then caused to bear on each other and forming together a tumbler the notch of which may be varied in twelve different positions relatively to the tooth 31 and the arm 33 respectively. As will be stated hereinafter, only ten of these combinations, corresponding to the numerals 0-9, will be made use of. When the rings shown in Figs. 4 and 5 are combined without changing their angular positions, the notch 35 will take such an angular position that the tumbler formed corresponds to the adjusting numeral 3. The four tumbler rings 34-34111 are mounted with their inner peripheral portions on the flanges 4| extending from the four spacing and bearing washers 42, 421, 4211, and 42111, the rst one being shown in plan View in Fig. 6. These bearing washers, which have the same outer diameter and the same thickness as the rings 34, are provided in their outer peripheral portion with an upwardly directed rectangular notch 43 of the same shape as that of the notch 35. The bearing washers 42-42111 are arranged to be carried by arms 44 directed straight upwardly from the side portion of the notches 43, said arms being provided in their top portions with apertures 45 having a tube 43 extended therethrough, one end of which tube is threaded into the bearing washer 42111, and the opposite end of which is screwed fast to a plate 41, which, in turn, is screwed fast to the cover 26 by means of the screws 48. The tube 46 is thrust on to the bolt 49 projecting from the front-side of the lock housing, whereby the necessary rigidness is imparted to the structure. The position of the bearing washers is further dened by the fact that they are mounted with the inner peripheral portion thereof on a cylindrical operating member 59 which is divided along a plane extending through the center thereof into an upper and a lower half, said halves being kept together by means of two bolts 5|. The operating member 5U is mounted at its one end in a plate 52 which is secured to the plate 41, and the outline of which is substantially congruous to the outline of the bearing washers 42. In its opposite end the operating member 5) is provided with a U-shaped flange portion 53 of a somewhat increased diameter, which is mounted round the greater por tion of its circular outer periphery in a ring 54 screwed fast to the front side 23 of the lock housing. The tube 46, the bolt 49, and the operating member 59 take such a position relatively to each other and in relation to the remaining lock members that, when the bolt 21 is in its locking position, the lower point of the arm 32 will be located right over the notches 43, and with its point close to the outer peripheral portion of the tumbler rings 34. The width of the arm 32 is somewhat less at the end of the arm than the width of the notches 35 and 43, and its thickness in the axial direction is equal to the combined thickness of the four tumblers plus the intervening three bearing washers.

The operating member 56 is provided with a cylindrical bore eccentrically arranged relatively to the axis of rotation thereof, said bore having rotatably mounted therein a cylindrical shifting or setting shaft 55, the mounting of which is so adapted that its outer cylindrical surface will contact with the cylindrical surface of the operating member 50. Screwed into the shifting or setting shaft are six carrier teeth 56, 551, 5611, 53111, 51 and 58, the portion of which projecting radially outside the shaft is of a length somewhat smaller than the width in the radial direction of the flange 4| on the bearing washers. Out of the six carrier teeth, the mutual angular distance of which is 60, that located nearest the end of the shaft 55 is arranged in a plane lying between the plate 52 and the bearing washer 42 adjacent thereto. Consequently, the tooth 5S will b-e located in the same plane as the tooth 31 of the tumbler ring 23 nearest the plate 52, which latter tooth it is intended to carry with it in the setting of this tumbler. Tl e succeeding three carrier teeth on the shaft are located in an analogous manner in the same plane as the tooth 31 on the respective tumbler rings 331, 3311, and 33111. In order that the cperating member shall permit cf being turned with a carrier tooth in operative position, the bore thereof is provided with annular milled-eut recesses 59, 591, 5311 and 59111 in the same plane as the respective carrier teeth 53, 531, 5611 and 55111. The next following fifth carrier tooth 51 is of a somewhat greater diameter than the others, by reason of which its recess 63 is somewhat wider. This carrier tooth is intended to eifect unlocking, that is to say withdrawing of the bolt 21 out of its locking position. To this end, the latter tooth is arranged in the same plane as an unlocking ring 6| the inner peripheral portion of which is provided with atooth 62 adapted to be entrained in a clockwise direction by the tooth 51. The ring 6l is provided with a radially extending arm 63 located in the same plane as the projections 64 and 65 extending from the lower side of the bolt, said projections being adapted to be actuated by the arm 63 for the purpose of eiecting unlocking and locking respectively. The ring 6l is screwed fast to the side of a toothed ring 66 which is mounted on the one flange of a bearing washer 61 of substantially the same shape as that of the washer l2 but provided with iianges on both sides, whereby the section thereof obtains the shape of a T. The bearing washer 61, which is carried by the bolt 4S, has another toothed ring 68 mounted on its second ange, the rim of said latter ring being equal to that of the toothed ring 65 and having on its inner peripheral portion a tooth, not shown in the drawing, adapted to be entrained by the sixth carried tooth 58 and located consequently in the same plane as the latter. The toothed ring 65 meshes with a smaller gear wheel 59 mounted on the pin 15. The gear wheel 69 meshes in turn with another gear wheel 1| of the same size in a plane between the toothed rings 6B and 68, the gear wheel 1| being mounted on the pin 12. The gear wheel 1| meshes in turn with the toothed rim 58 `which consequently when turned always moves in a direction opposed to that of the toothed rim 66 and the ring 6| actuating the bolt of the lock. The toothed ring 68 has for its object to aid in restoring the tumblers into their initial positions. This is eiiected in the following manner: the carrier tooth 58 of the operating member turns the toothed ring 68 in a clockwise direction, the toothed ring 65 and the unlocking ring El rigidly connected therewith being then caused to turn by the same angle in the opposite direction. A restoring rod 84 extending from the arm 63 axially along the external peripheral portion of the tumblers is then brought into engagement with the arms 38, whereby the tumblers are turned in a counter-clockwise direction into their initial positions, which are reached when the rod 84 strikes against the arms 44 of the bearing washers, which corresponds to the angular position of the arms 38 shown inFig. 5. The teeth 31 of the tumblers will then take the initial position shown in the samegure, which corresponde to a turning movement of 40 in a clockwise direction from the horizontal position.

The turning of the setting or shifting shaft 55 by a sixth revolution in a clockwise direction at each oscillation of the operating member 55 of at least 35 Yfor the purpose of shifting the carrier teeth is effected by a pawl and ratchet device comprising the pawl 14 actuated by the spring 13, said pawl being in turn adapted to engage the six ratchet teeth of the ratchet wheel 15 secured to the end of the shaft 55. As will appear from Fig. 3, the pawl 14 is prevented by the abutment 83 from carrying more than one tooth at a time along with it. A pawl 86 actuated by the spring 85 is pivoted about the pin 82 screwed into the operating member 50, Yand this pawl prevents the shaft 55 from turning in a counter-clockwise direction relatively to the operating member.

The oscillatory movements of the operating member are produced by means of a iinger dial 11 which is shown in Fig. 7 to a somewhat smaller scale than the other parts. This linger dial, which is substantially of the same shape as the finger dials used in connection with automatic telephony, is provided with ten finger holes having the designations 0 to 9. The linger holes are arranged at a mutual angular distance of 30, and the angular distance from the O-hole to the iinger stop 18 is 55. When turned in a clockwise direction the linger dial is oounteracted by a spiral spring 19 which returns the same into the initial position shown in Fig. 7, as soon as the force turning in a clockwise direction ceases. The nger dial 11 is secured to the spindle 80 extending through the door 20, the spindle being provided with a stop ring 8i on the inside of the door. Said stop ring is provided with an eccentrically located hole engaged by the pin 82 screwed into the operating member, so that the finger dial and the operating member will perform the same angular movements. The initial position of the finger dial is reached when the abutment 83 of the iiange 53 strikes against the pawl 14.

The mode of operation of the lock described will appear from the following account. It is supposed that the so-called combination number of the lock is :3' 7 9 l, which involves that, in order to Ipermit displacement of the bolt of the lock out of locking position, the said four numerals will Vfirst have to be struck by means of the finger dial 11 in the order stated. It is assumed for the sake of simplicity that, prior to the striking of said combination number, the tumblers of the lock are in their initial positions, the carrier tooth 55 for the rst tumbler having then to be in its operative position, that is to say in a horizontal position to the right in Fig. 1, i. e. the same position which is taken by the carrier tooth 51 in Fig. l. Now, when the iirst numeral of the combination, a three, is struck, the finger dial is first turned by the angle between the finger holes 3 and 0, namely 90, ansd then by the angle between the initial position of the O-hole and the iinger stop, namely 55, that is to say 145 all in all. However, the carrier tooth 55 engages the tooth 51, as stated hereinbefore, only upon a turning movement of 40, and consequently the turning movement of the tumbler 33-34 in a clockwise direction, when the three is struck, will be only. The notch 35, the initial position of which is shown in Fig. 4, will thus turn by 105 in a clock-wise direction and will consequently take the topmost position right underneath the poi-nt of the `arm 32. Then, when the finger dial returns into its initial position, the pawl 14 during the last turning movement by 35 in a counter-clockwise direction will turn the shifting or setting shaft 55 by 60 so Yas to bring the next carrier tooth 551 into operative Iposition for engagement with the tooth 311 on the succeeding tumbler 31h- 851. This tumbler, which is adjusted by striking the numeral 1 by the iinger dial, has its notch 351 in the position shown by dotted lines in Fig. 4. When the seven is struck on the linger dial, this tumbler will be turned in a clockwise direction so that its notch 351 is caused to take the exact topmost position. In an analogous manner, the two remaining tumblers are then adjusted by striking the nine and the one on the nger dial.

The locking members then take the mutual po Now, the tooth 51 inerative position. When the nine was struck, the arm 3811 of the tumbler 5311-3411 moved the restoring rod 84 and thus the ring 5| into the angular `position shown in Figl l, with the unlocking arm 63 off the abutment 64 on the bolt 21 of the lock by an inconsiderable angle only. To effect unlocking, the numeral 9 is now struck on the finger dial, the carrier tooth 51 then moving the bolt of the lock out of its locking position dtuing the last 30 degrees of the turning movement of said tooth in a clockwise direction, the arm 32 being then depressed into the properly adjusted notches of the tumblers, whereupon the door may be opened. After the door has been shut again, locking is eiTected by again striking the nine on the nger dial. The sixth carrier tooth 59 will then turn the toothed rim in a clockwise direction, whereby the toothed rim 66 andthus the unlocking rin-g 5| will be turned by the same angle in a counter-clockwise direction. Here, the bolt 2T is rst brought into locking position by its abutment 05 on the arm 63 being moved to the left in Fig. l, whereby the arm 32 is simultaneously raised out of the not-ches of the tumblers. Upon a continued turning movement in a counter-clockwise direction, the restoring arm 84 moves all of the tumblers into the initial position in the manner hereinabove described. When the lock is to be unlocked again, the procedure repeats itself in the manner set forth hereinbefore.

It is conceivable, however, that an unauthorized person has tampered with the lock after it was locked the last time by an authorized person. As the combination is unknown, the chances are very small to nd the proper .combination among the 10,000 possible .combination numbers, and consequently the efforts will result in that the 'lock remains locked, but with the locking members in such a position that an authorized person cannot unlock immediately by striking the proper combination. It then becomes necessary to reset the locking members into their proper initial positions, that is to say, in this case with the carrier tooth 59 for the rst tumbler in its operative position, so that unlocking can be commenced with by striking the three. To this end nines are struck repeatedly on the finger dial as far down as to the finger stop, until it occurs that the hole of the nine cannot be moved 'further than about 30 from the nger stop, which shows that the bolt of the lock is actuated in vain to effect unlocking. One then knows that the next nine which is struck will perform resetting of the tumblers, whereupon the proper initial position is reached. After that the proper combination iS struck.

I-f the combination number of the lock has become known to unauthorized persons, recombination of the two-part tumblers may be eiected readily for any number comprising four numerals. For this purpose the lock is unlocked and the door opened in the ordinary manner, so that the rear side of the lock housing is rendered accessible. After that the nine is struck on the finger dial for resetting, but the nger dial is not permitted to return into its initial position, but is fixed with the hole of the nine adjacent to the finger stop, for instance by means of a steel wire or the like. All of the tumblers have now been restored, the arms 38 then lying just inside the outline of the arms 44 on the bearing washers. The carrier tooth 58, however, for the toothed ring 58 is still in its operative position. After that'all four tumblers are taken out together with their four bearing washers by loosening the screws 43 and by pulling the plate li'l and the plate 52 connected therewith straight rearwardly, the tumblers and the bearing washers then sliding o the operating member 50 and the bolt 9. Now, the operating member will be carried only by the bearing washer El and the ring 5t. The tube lG is then unscrewed both from the bearing washer 52111 and from the plate 6&7, after which all tumblers become free and permit of being recombined in the desired manner, it being of course necessary not to forget to note down the new combinations accurately. The tumblers and bearing washers are then remounted on the operating member and the bolt and the plate is screwed fast by means of the screws 9o. The finger dial having been loosened and permitted to return into its initial position the lock is ready for use in its new combination.

The form of embodiment shown in Figs. 8-11 also refers to a lock for safes or the like. A number of the details of the construction of this lock are identical with corresponding details in the above described first embodiment, and for this reason the same designation numerals with a prime annexed thereto are used for corresponding parts in the description of this second embodiment. The combination number for this latter lock is also taken to be 3 '7 9 1.

As in the preceding embodiment, this second lock also has a housing screwed to the inside of the door 20', said housing being provided with vertical sidewalls 2| and E2' united by means of the front wall 23. The housing is closed at the rear by means of the cover 25' outside of which the cover 7 is secured by means of screws. Secured to the inside of this cover is a plate 52 on a level with the cover 20', said plate forming the bearing for a circular disk |00 forming the inner termination of the operating member |0| consisting of a cylindrical sleeve (Fig. 10). This operating member is provided with two longitudinally extending and diametrically opposed slits |02 and |03 located in a hori- Zontal plane in the initial position shown in Figs. 8 and l0. In its end portion bearing on the door 20 the operating member |0| is provided with a radially extending inward ange |04 into the center of which is threaded a sleeve |05 secured by means of the screw |08. The sleeve |05 is mounted in the door 20 and is provided on the front side of the latter with a flange portion |01 which continues in a cylindrical sleeve |03 (Fig. 9) of the same cross section as that of the sleeve |0|, and which is provided with similar and equally located slits |09 and H0 (Fig. 9), and which is closed at the front by means of the cover The sleeve |00 is located at the center of a cylindrical housing H3 secured to the front side of the door by means of the screws 2 and closed at the front by means of the cover |53. Mounted on the outside of the sleeve IDI are four bearing washers of identically the same type as in the preceding embodiment. In Figs. 8 and 10, the second in order, counted from the cover 20', is designated by 42'1, while its upwardly directed arm is denoted by 441. The four bearing washers constitute the bearing means for four tumblers of identically the same type as those used in the preceding embodiment. Figs. 8 and 10 illustrate the ring 3811 pertaining to the third tumbler, with the restoring arm 3811 and the adjusting abutment 3111. For the adjustment of the tumblers in accordance with the principle of the invention there are provided four radially displaceable carrier teeth, one of which that designated by H4 in Figs. 8 and 10 is in its operative initial position, inasmuch as the same is displaced radially outwards so as to protrude outside the cylindrical surface of the sleeve The tooth I4 projects from a round disk I|5 provided with an annular slot IIB entering axially from the side and arranged to be actuated by a pin extending axially and eccentrically from a round disk ||8 which is secured to the shaft I|9 by means of a tongue fitting the longitudinally extending slot in said shaft. The tooth ||4 and the arm |2| projecting in a diametrically opposite direction thereto are displaceably fitted into the respective slots|03 and |02 in the sleeve IOI. The slot H8 in the disk I i5 consists of a circular arc of 240 united by means of an arc of less curvature. During a turning movement of 240 of the shaft I I9 in a clockwise direction relatively to the sleeve |0| the pin ||l will keep the tooth ||4 retracted inside the jacket surface of the sleeve |0l. During the succeeding turning movement by 60 the tooth will project into operative position, as shown in Figs. 8 and 10, and during the remaining turning movement of 60 the tooth will again be retracted. rlhe four pins eiecting the shifting of the carrier teeth are arranged at a mutual angular distance of 60. The shaftv ||9 is continued within the sleeve |05 by a larger shaft portion |22 which, in turn, is continued within the sleeve |08 by a shaft |23 of the same section as that of the shaft ||9 and provided with a similar and equally located slot |24. The shaft |23 is extended through a hole at the center of a iinger dial |25, so that the outer end thereof will lie in the same plane as the outer side of the finger dial.

As in the preceding embodiment, this second lock is also provided with an unlocking ring 6I' secured to the side portion of a toothed ring B6' which is in connection with a similar toothed ring 98' over two smaller gear wheels, by reason of which the two toothed rings when turned Will move in opposite directions at the same angular velocity. The bolt of the lock andthe parts cooperating therewith are identical with the corresponding parts in the preceding embodiment. To effect the turning movement by 60 of the shifting or setting shaft H9, |23 for operation in a clockwise direction relatively to the operating member lill for each oscillation of at least 35 of the linger dial there is provided a ratchet device, shown in Fig. 11 and consisting ofthe wheel |25 provided with six ratchet teeth, said wheel being secured on the shaft |23, and consisting also of the pawls |21 and |28, the first one of which is pivoted about a pin |29 extending from the cover I I secured to the sleeve |08, and is actuated by the spring |30 ,while the latter pawl is actuated by the spring |3| and is pivoted about the pin |32 extending from the cover |53 secured to the casing H3. The nger dial |25 is secured to the cover II by means of the three screws 33 extending through the half-moonshaped plate |34, the point |35 of which prevents the pawl |28 from advancing more than one tooth at the time on the Wheel |26. The initial position of the nger dial |25 Will be reached when the pawl |23 strikes against the abutment |36, as shown in Fig. 1l. The contrivance above described ior turning the shifting or setting shaft H9, |23 operates in principle in the same manner as the corresponding device in the preceding embodiment. It should be noted in this connection that the locking device described is located in its entirety on the outside of the door where it is readily accessible by loosening the nger dial. Hereby the mechanism located inside the door becomes altogether relieved of springs of any kind. The nger dial |25, its nger stop |31 and its return spring |38 have exactly the same functions as the corresponding parts in the preceding embodiment.

It is believed to be understood from the description hereinbefore that this latter lock may be operated in identically the same manner as the preceding lock, Athat is to say, all operations take place by oscillating the nger dial in accordance' with certain rules laid down for the lock. This latter lock, however, is, provided with a contrivance enclosed Within the casing I I3 and adapted to facilitate the setting of the four tumblers. To this contrivance pertains the sleeve |03 with the four carrier teeth arranged therein, said teeth being of identically the same construction as those provided in the sleeve IOI (I I4 and others). These four carrier teeth, out of which the third one, counted from the door in Figs. 8 and 9, is shown in operative position in exactly the same manner as the tooth l |4, and which is designated by |39 in said figures, correspond to the respective carrier teeth for the setting of the tumblers and are arranged to move in exact synchronism with the latter. They are each adapted to entrain one of four stepped wheels, of which the Wheel designated by |40 in j; Fig. 8 is entrained by the tooth |39 at the next succeeding oscillation ofthe iinger dial |25 by the fact that 'the same will in a clockwise-direction actuate the'abutment I 4| on the ring |42 secured to theside Aof the stepped wheel |40. The four stepped wheels, which all are of the shape of the stepped wheel |43 shown in Fig. 9, are each provided with ten steps, of which that denoted by |44 in Fig. 9 has the smallest radius. This step vcorresponds to the numeral 0 on the finger dial, while the other steps correspond in due order to the numerals Ito 9. i The step corresponding to the numeral 9 is designated by |45, and the next succeeding abutment |46 with the greatest radius is adapted to be actuated for restoring the stepped wheel into the initial position shown in Fig. 9, in which position it bears with its radial edge |4`| on a rod |48 extending fromthe wall of the casing I| 3 bearing on the door. The returning of an adjusted stepped Wheel takes place on the return stroke of the oscillation whereby it was adjusted immediately before,and such returning movement is arranged to be performed by an axially extending rod |49 projecting perpendicularly from the outer end of an arm |54 extending radially from the cover I 'Itwill appear from the statements hereinbefore that when a tumbler is entrained by a carriertooth the stepped wheel corresponding to said tumbler will'be entrained exactly at the same time by its carrier tooth through thevsame angle. In order'accurately to deiine this angle to correspond to the combination numeralv for the tumbler in question, a form or key |50 will be introduced radially to the center of the four stepped Wheels. As will be seen .trom Figs. 8 and 9, where said key is shown in the proper position, the same is constituted by a rectangular plate Yprovided with an annular handle, out of which plate are punched four slots of a somewhat-greater width than the thickness of the stepped wheels and located at the same mutual distance as the stepped wheels. The depth of the slots corresponds to the combination numerals in such manner that, when the key is inserted into its proper position, the slot adjacent to the door, which is denoted by |I, will stop the fourth step of the corresponding stepped wheel, whereby the corresponding tumbler is turned through an angle corresponding to that obtained when the numeral 3 is struck by the finger dial. Analogously, the third slot |52 has a depth corresponding to the numeral 9, and so forth. When the lock is operated with the aid of the key above described, the combination number need of course not be committed to memory. However, since nines may occur in this number, nines should always be struck on the finger dial. As the outer end of the setting shaft |23 is visible with its slot at the center of the finger dial, it will be found suitable to indicate the position of the slot on the linger dial, when it is in its initial position, by a mark, when the lock is in its initial position for the adjustment of the rst tumbler. When unlocking is to be eilected, it will then only be necessary to strike ninos until the said slot and mark coincide, whereupon either the combination number will be struck by the finger dial, or the key will be inserted into position, and four nines being struck, after which the next succeeding nine moves the bolt of the lock out of locking position.

Recombination of the tumblers for another combination number is effected in this latter lock in exactly the same manner as in the preceding embodiment. Naturally, a new combination number also calls for a new key.

The arrangement for operating the lock by the use of a form or key may obviously also be ap plied in the preceding construction of lock shown in Figs. 1 to '1.

Finally, Figs. 12 to 18 show a third simpler form of embodiment of a locking means in accordancel with the principle of the invention. The housing |60 of this lock has its front wall |66 secured on the inside of the door by means of the four corner screws HB2-|65, and the four side walls pressed integral, with the rear wall |61 secured by means of the above-mentioned screws |62-| 65 to the front wall. The lock bolt |68, the extremity of which is bevelled off 4outside the housing, is guided in a slit in the one vertical side wall and by two bolts |69 and |10 projecting from the front wall |66 and engaging the respective slits |1| and |12 in the lock bolt |68. The latter is retained in the locking position shown in Fig. 12 by a spiral spring |13 which is housed within a cylindrical sleeve |14 welded to the upper edge portion of the lock housing, and the one end of which bears on a pin |15 projecting perpendic-4 ularly from the lock bolt |66. The opposite end of the spring |13 bears on another pin |16 extending at right angles from the shorter, upwardly directed arm |11 of a two-armed lever which is pivoted on the pin |18, and the downwardly depending longer arm of which is constituted by the toothed segment |19, the construction and function of which will be described hereinafter. In the position shown, the arm |11 bears on the screw |62. Displaceably tted between the lock bolt |68 and the rear wall is a slide-piece |80 which is also guided by the two bolts |69 and |10 engaging corresponding slits therein, and which is provided with a pin |8| engaging the slit |12 in such manner that the slide-piece will upon Jol ing position.

displacement in a. direction toward effecting unlocking entrain the lock bolt against the tension of the spring |13, whereas the lock bolt may be displaced independently of the slide-piece when the door is shut. The slide-piece is provided with a notch |82 in the lower edge thereof adjacent to the rear wall |61, said notch being adapted to be engaged by a tooth |84 projecting radially from the unlocking disk |83 (Fig. 13). The disk |83, bearing with one side thereof on the rear wall |61, is pivotally mounted on a cylindrical sleeve |85 which is screwed onto a iiange portion |86 on the inside of the rear wall |61. Furthermore, four circular tumblers are rotatably mounted on the sleeve |85, said tumblers being designated, counted from the disk |83, by 4, I., 2 and respectively. These tumblers, whic-h consist of sheet metl stampings of a thickness of a few millimeters, are each provided with two radially extending teeth, i. e. one shorter adjusting tooth and another longer restoring tooth. In Fig. 12, which shows the tumblers in their initial position, said teeth are denoted by |81 and |88 respectively. By means of five circular spacing members |89 non-rotatably mounted on the sleeve |785 each individual tumbler is prevented from being turned otherwise than through the actuation of the teeth |81 and |88. Each tumbler is provided with a notch of uniform width extending radially inwards from the peripheral portions thereof, the angular position of which notch is determined relatively to the setting tooth |81 by the numeral of the combination number of the lock corresponding to the respective tumblers, said number comprising four numerals in the present case in view of four tumblers being provided. For this lock, too, the combination number is taken to be 3791, by reason of which the notches in the initial position shown in Fig. 12 take the angular positions designated in Fig. l2 by 2, 3 and 4, said numerals corresponding to the designatins of the respective tumblers. With properly adjusted tumblers according to the combination number the four notches should take a horizontal position, as shown at |90, that is to say, the notches should register with the notches |9| provided in the spacing members |89. In this position it will be found possible to move the lock bolt out of lock- 'Ilhis is so forrthe reason that the horizontal stop plate |92 projecting from the downwardly depending arm |93 of the lock bolt extends into the registering notches of the tumblers 4. Again, should a single tumbler be incorrectly set, the lock bolt cannot be displaced out of locking position.

The operation of the lock, that is to say the adjustment and restoring of the tumblers into the initial position, the displacement of the lock bolt out of locking position, and the shifting of the latter is effected solely with the aid of oscillations, i. e. by reciprocating angular movements of a single operating member or manoeuvring member. This manoeuvring member consists of the door-handle |94 which is retained by means of the screw |95 on the square-head |96 of the lock spindle |91. This lock spindle is journalled in a cylindrical ange portion |98 on the front wall |66 as well as in the previously mentioned flange portion |85 on the rear wall |61. Furthermore, the hub |99 of the door-handle |94 is mounted on the outside of a cylindrical ange portion 200 on the circular fitting 20|. A spiral spring 202 about the spindle |91 is so arranged as to tend to turn the spindle in a counter-clockwise direction. In Fig. 17, the door-handle is shown in the starting position, a pointer 233 on the hub ISS being then opposite the left divisionline, designated by of a scale 261i on the tting Zei. From this position, the door-handle may be adjusted through a turning movement in a clockwise direction against the tension of the spring 2l2, with the pointer opposite any one of the numerals @-9, corresponding to the numerals of the combination number. With insuflicient illumination, however, adjustment cannot take place with the aid of the scale 2M, the adjustment being effected in this case by the perception of touch. To this end the door-handle is provided with an appendage extending obliquely downwards to the left, said appendage, which is designated b-y 2%, being provided on the front side thereof with a spherical cup 2325, the bottom portion of which is bisected by a cylindrical slot 2i?? cutting into the appendage 225 on the side thereof facing the door. Protruding into this slot 297 is a cylindrical segment 258, without abutting against the surfaces of the slot. The segment 2%, which extends perpendicularly from the edge portion of the iitting 2Q I is provided with rounded teeth 269 in the outer edge portion thereof, out of which teeth the ten teeth of the group within the angle 2 I il are at the same angular distance from each other as the division-lines @-3 of the scale e to which the teeth 2GB correspond in due order. The tooth 2 l I at the bottom of the segment 2te corresponds on the scale 284 to the division line for the starting position designated by The teeth 2cd, 2| I protrude by a few millimeters through tne slot 257 at the center of the cup 255, and may thus be distinguished by feeling and counted. When effecting adjustment in darkness one Ithus places ones right hand with the inside of the point of the thumb in the cup 2635 and with the other four fingers on the upper side of the door-handle |911. In the starting position shown in Fig. 17, the tooth 2|| corresponding to the division line :c on the scale 252 is then felt by the thumb as protruding at the center of the cup. For example, if the number l is to be struck, the door-handle is iirst depressed by the angle 2l2 (Fig. 17) until the rst tooth 259 in the group, corresponding to the numeral El on the scale, has been reached. The turning movement is then continued, and atthe same time the teeth are counted which are felt by the thumb as passing, until the seventh tooth has been reached, counted from the nought tooth, whereat the turning movement is interrupted with the seventh tooth at the center of the cup 255. The pointer 2% then points to the division-line I of the scale 25d which, however, cannot be read off in the darkness. The door-handle is then permitted to return into the starting position under the action of the spring 222. The movement described is mediated by means of the lock spindle onto the arm 2l3 which is shown in section in Figs. 13 and 15 and in plan View in Figs. 12 and 15. In Fig. 12, the lower portion of the arm 2I3 is out away, in order that the adjusting roller 2M provided thereon with its five setting teeth 2', 3, G. and 5 and the shuttle-like pawl 2I5 shall become visible. The arm 2I3 which is punched out of sheet-metal is secured on a square-head 2lb of the lock spindle |91, and the one side thereof abuts against the outer wall |66. Projecting at right angles on its opposite side near the peripheral portion thereof is a pin 2 I 'I on which the adjusting roller 2M is rotatably n mounted, said roller extending in the axial di- Y- sponding to the numeral 0.

rection to the rear wall |61. As illustrated in Fig. 16, the ve teeth of the roller ZIII are located each in one plane. In a radial direction, they are located at the same angular distance, i. e. 72. The roller 2 I4 is prevented from turning in a clockwise direction by the pawl 2 I 5 which is displaceably guided by two bolts 2I8 and ZIE screwed into the arm 2|3, the portion of which bolts projecting from the arm 2|3 is bevelled off so as to make the section vsemi-circular. The bolts 2|8 and 2I9 are fitted into milled-out portions in the pawl 215 which is actuated in a direction ytoward the roller `2M by Ya spiral spring 22@ housed within a bore in the pawl. The point 221 of the pawl extends axially all over the length of the rollerv 2M and may thus actuate the ve setting teeth I-5 in due order. Furthermore, a rod 222 extends from the arm 2|3 in an axial direction, said rod being intended to restore the tumblers into the initial position shown in Fig. 12 by actuating the teeth |88 of the tumblers, which is eected when the door-handle |94 is turned in a counter-clockwise direction from the position shown in Fig. 17. 'Ihe teeth |88 having been returned in their entirety the rod 222 takes the position shown by dotted lines at 222', the setting teeth I8? then abutting against the corner of the lock bolt, as shown in Fig. 12. For certain practical reasons the order of the adjustment of the tumblers is not regular. First of all the tumbler I is adjusted, which is the second inv order counted from the rear wall |67. This tumbler corresponds to the numeral 3 of the combination number and has its notch I in such an angular position that the tumbler will have to be turned by four division-lines, in order that the notch shall take a horizontal position, as shown at |92. This turning movement is performed by the tooth I on the adjusting roller 2M which in Figs. 12, 15 and 16 takes the original position for the adjustment of the tumblers. In this position the tooth 3 is turned outwardly towards the toothed segment |19. When the door-handle is turned downwardly (in a `clockwise direction),

. the tooth 3 will strike against the oblique tooth 223 at the point of the toothed segment |19, whereby the roller 2m is turned by a fth of a revolution, the pawl 2 I5 being then pressed back by the tooth 5 out of, engagement with the -tooth 4 and moving instead into engagement with the tooth 5. The tooth I'v will then bear on the setting tooth |81 of the tumbler 1 Upon continued turning movement of the door-handle in a clockwise direction by an angle equal to the distance between two division-lines on the scale 204 the pointer has reached the division-line il on the scale, that is to say, the door-handle has made the adjusting movement that would be required for the adjustment of a tumbler corre- (Naturally, a tumbler corresponding to the numeral in a. combination number should not be adjusted already in the initial position). The turningmovement in a clockwise direction is now continued further by three division-lines, so that the pointer will point exactly to the numeral 3 on the scale 2M. In darkness, counting is effected with the aid of the Contact between the thumb and the teeth of the segment 208. When the tooth for 3 is felt to be exactly at the center of the cup, the tumbler I is adjusted. The door-handle is then permitted to return into the initial position under the inluence of the spring 292. The tension of this spring ,is so adapted that the tooth will be able to force away the tooth 223 of the segment |19 against the tension of the spring |13. The arm 2|3 and thus the door-handle are arrested in the initial position by the bevelled abutment 224 (see Fig. l5) striking against the oblique surface 225 at the point of the segment |19. As will be seen, this sruface is considerably steeper than the oblique surface 223, and consequently the spring 262 will not be able in this case to press away the segment |19. Now the door-handle is again turned downwardly (in a clockwise direction) for` adjusting the next tumbler 2 with the notch 2L corresponding to the numeral 1. This tumbler is the third one counted from the rear wall |61. lhe adjustment, which is performed by means of the tooth 2', takes place analogously to the previously described adjustment of the tumbler After that, the third trunbler is adjusted in an analogous manner, said tumbler being adjacent to the arm 2 I3, and, finally, the fourth tumbler 4 is adjusted, which is on the opposite side next to the unlocking disk |83. This latter tumbler having been adjusted, the tooth 2 is directed toward the segment |19. into the initial position and upon repeated turning of the door-handle in a clockwise direction, the tooth 5 is brought into operative position relatively to the tooth |81 on the unlocking disk |83. Upon a continued rotary movement of the handle in a clockwise direction the tooth |84 will therefore displace the slide-piece |80 and thus also the lock bolt |68 out of locking position, the plate |22 then sliding into the four registering notches I', 2', 3', and 4' in the tumblers. When the door-handle is then permitted to return toward the initial position, such position is not reached, however, inasmuch as the tooth 3', which has now been turned back into the angular position shown in Figs. l2 and 15, strikes against the steep surface on the tooth 225 (at 226 in Fig. 14). As the power of the spring 292 is not suficient to press back the segment |19, the doorhandle will not move up into the initial position. The lock will consequently remain unlocked. To restore the lock into locking position, that is to say into the initial position shown in Fig. 12, the door-handle will be turned in a counterclockwise direction (upwardly), the tooth 3 then pressingr out the segment |19. Upon continue-d` rotary movement in a counter-clockwise direction the abutment 224 (Fig. 15) moves past the oblique surface 225. The turning movement is continued until the restoring teeth |38 and thus the rod 222 are arrested by the corner of the lock bolt. The door-handle is then turned back in a clockwise direction, so that the abutment 221 (Fig. 15) is caused to press out the toothed segment |19 and moves past the tooth 225, whereupon the locking position shown in Fig. 12 has been reached. The adjusting roller is already before in its original position, and consequently it will be possible to unlock the lock anew by striking the combination.

It may occur, however, that unauthorized persons have tampered with the lock during futili.` efforts to unlock it, and the members of the lock have then been left in unknown positions. When an authorized person desires to unlock the lock, there is every reason to suspect that the adjusting roller does not take its original position. Therefore, the lock is so arranged that it will be possible under all circumstances to restore the adjusting roller 2|4 intov `the original position, that is to say with the tooth 5' turned inwardly On having returned towards the center of the tumbler, and with the tooth 3' turned outwardly towards the segment |19, by only turning the door-handle in a counter-clockwise direction until the movement is stopped by the restoring teeth |88 and thus the rod 222 being arrested by the lower corner of the lock bolt. The tooth directed toward the segment |10, which may be any one of the five teeth |-5' on the roller 2 I4, is then moved up above the tooth 4 on the segment |19. When the doorhandle is then moved down into the initial position, the abutment 221 then pressing back the tooth 225 of the segment, that one of the teeth |'-5 which is directed toward the segment |19 will strike against that one of the teeth I", 2", 4" or 5" which is in the path thereof, and hereby the roller 2|4 will be turned by the number of steps required to cause the tooth 5 to stand in the original position. In case the tooth 3' is directed toward 'the segment |19 and the tooth 5 is consequently already in its original position. no resetting of the roller 2|4 is required, and for this reason the segment |19 is not provided with any tooth in the zone 228 within which the tooth 3 moves along the segment |19.

If it is desired to recombine the tumblers or to insert new tumblers with other numerals, it is only necessary to loosen the rear wall |61, whereupon the tumblers may be removed and the desired alteration undertaken.

What I claim is:

1. In a combination lock, a plurality of tumblers adapted to control a bolt, a setting member movable only by oscillation, and carrier means associated with said setting member and adapted to. be set in relation to said member by the oscillatory movement thereof, said carrier means being movable only in a plane at right angle to the axis of oscillation of said setting member and comprising in combination with a plurality of carrier members adapted to set said tumblers in accordance with the combination of the lock, a carrier member adapted to restore said tumblers into initial position and a carrier member adapt-- ed to unlock said bolt, whereby the lock is rendered operable by means of a single setting meinber.

2. In a combination lock, a plurality of tumblers adapted to control a bolt, a setting member movable only by oscillations, a rotatable member carried by said setting member and adapted to be rotated by the oscillatory movement thereof, and carrier means associated with said setting member and said rotatable member and adapted to be set in relation to the setting member by the oscillatory movement thereof, said carrier means being movable only in a plane at right angle to the axis of oscillation of said setting member and comprising in combination with a plurality of carrier members adapted to set said tumblers in accordance with the combination of the lock, a carrier member adapted to restore said tumblers into initial position and a carrier member adapted to unlock said bolt, whereby the lock is rendered operable by means of a single setting member.

3. A combination lock according to claim 2, wherein said rotatable member is movable through a given angle relatively to the setting member by the oscillatory movement thereof in the one direction, and wherein means are provided to hold said rotatable member stationary relatively to said setting member at the oscillatory movement thereof in the opposite direction.

4. A combination lock according to claim 2,

wherein said rotatable member is arranged excentrically in relation to the axis of oscillation of the .setting member.

5. A combination lock according to claim 2, wherein said rotatable member is arranged excentrically in relation to the axis of oscillation of the setting member and is movable through a given angle relatively to said setting member by the oscillatory movement thereof in the one direction, and wherein means are provided to hold said rotatable member stationary relatively to the setting member at the oscillatory movement thereof in the opposite direction.

6. A combination lock according to claim 2, wherein said carrier members consist of projections rigidly Secured to the rotatable member.

7. In a combination lock, a plurality of tumblers adapted to control a bolt, a setting member movable only by oscillations, a rotatable member carried by said setting member and adapted to be rotated by the oscillatory movement thereof, a plurality of pins mounted in said setting member to slide in planes at right angles to the axis of oscillation thereof, and cam means carried by said rotatable member to actuate said pins, said pins comprising a plurality of pins adapted to set said tumblers in accordance with the combination of the lock, a pin adapted to restore said tumblers into initial position and a pin adapted to unlock the bolt, whereby the lock is rendered operable by means of a single setting member.

8. A combination lock according to claim 7, wherein said rotatable member is movable through a given angle relatively to the setting member by the oscillatory movement thereof in the `one direction, and wherein means are provided to hold said rotatable member stationary at the oscillatory movement of the setting member in the opposite direction.

9. In a combination lock for doors and the like, a locking mechanism adapted to be arranged inside the door and comprising, a plurality of turnblers adapted to control a bolt, a setting member movable only by oscillations, a rotatable member carried by said setting member and adapted to be rotated by the oscillatory movement thereof, carrier means associated with said setting member and said rotatable member and adapted to be set in relation to said setting -member by the oscillatory movement thereof, said carrier means comprising a plurality of carrier members adapted to set the tumblers in accordance with the combination of the lock, a carrier member adapted to restore the tumblers'into initial position and a carrier member adapted to unlock the bolt, said setting member and said rotatable member having each an extension adapted to project outside the door, said rotatable member being movable through a given angle relatively to said setting member by the oscillatory movement thereof in the one direction, ratchet wheel means connected to the extension of the 1"otatable member to hold said member stationary relatively to said setting member at the oscillatory movement thereof in the opposite direction, and a manoeuvring member connected 'to the extension of said setting member.

lo. In a combination lock for doors and the like, a locking mechanism adapted to be arranged inside the door and comprising, a plurality of tumblers adapted to control a bolt, a setting member movable only by oscillation, a rotatable member carried by said setting member and adapted to be rotated by the oscillatory movement thereof, carrier means associated with said setting member and said rotatable member and adapted to be set in relation to the setting member by the Ioscillatory movement thereof, said `carrier means comprising a plurality of carrier members adapted to set the tumblers in accordance with the combination of the lock, a carrier member adapted to restore the tumblers into initial position and a carrier member adapted to unlock the bolt, said setting member and said rotatable member having each an extension adapted to project outside the door, additional carrier members associated with said extensions and corresponding respectively to the tumbler controlling carrier members of the locking mechanism and adapted to be set in accordance with the latter, stop members carried by the extension of said setting member and adapted to control the oscillatory movement thereof, a key formed in accordance with the combination of the lock and insertable in the path of movement of said stop members to control the movement thereof, and a manoeuvring member connected to the extension of said setting member.

l1. In a combination lock, a plurality of tumblers adapted to control a bolt, a setting member movable only by oscillation, carrier means mounted on said setting member and comprising a carrier roller arranged excentrically in the relation to the axis of oscillation of said setting member and adapted to be rotated by the oscillatory movement thereof, said roller carrying means to set the tumblers in accordance with the combination of the lock and means to restore the tumblers into initial position, said carrier means also comprising means to unlock the bolt, whereby the lock is rendered operable by means of a single setting member.

12. A combination lock according to claim 11, wherein said carrier roller and said tumblers are provided with co-operating teeth, and wherein a pawl and ratchet mechanism is provided engaging the teeth of said roller to rotate same stepwisely by the oscillatory movement of the setting member.

1.3. A combination lock according to claim 11, wherein said tumblers and said carrier roller are provided with `co-operating teeth, the teeth of said carrier roller projecting radially in interspaced planes, and wherein a pawl and ratchet mechanism is provided adapted to engage the teeth of the carrier roller to rotate same stepwisely by the oscillatory movement of the setting member, said mechanism comprising a toothed member having a ltooth adapted to engage all the teeth of the roller and a plurality of teeth arranged in interspaced planes coinciding with the planes in which the teeth of the roller are arranged so that the latter teeth of the toothed member are each adapted to be brought into engagement with a tooth on the roller by the oscillatory movement of the setting member to restore said roller into initial position.

14. In a combination lock according to claim 11, the provision of a door handle carrying said setting member and also carrying one of the cooperating parts of a pointer and scale indicator to indicate the angles of oscillation of the setting member in correspondence to the digits of the combination number of the lock, and separate indicating means operable by the perception of `touch to permit control of said angles in darkness.

15. In a combination lock, a plurality of tumblers adapted to control a bolt, an oscillatory setting member, a carrier roller carried by said setting member and arranged excentrically in relation to the axis of oscillation thereof, said carrier roller carrying means to set the tumblers in accordance with the combination number of the lock and means to unlock the bolt, means to turn said carrier roller stepwisely b-y the oscillatory movement of the setting member to bring said tumbler setting means and said bolt unlocking means into operative position to actuate the tumblers and the bolt, respectively, and means to restore said tumblers into initial position.

16. A combination lock according to claim 15, wherein the tumblers consist of turnable disks arranged close by each other, the carrier roller same in accordance with the corresponding digit of the combination number of the lock and also carrying a carrier member adapted to actuate the bolt to unlock same.

17. A combination lock according to claim 15, wherein a turnable disk is provided to unlock the bolt and wherein the tumblers consist of turnable disks, all said disks being arranged close by each other, the carrier roller being situated radially outside said disks and carrying carrier members of a number equal to the number of the tumbler disks and each adapted, at the oscillatory movement of the setting member to turn one of said tumbler disks to set same in accordance with the lcorresponding digit of the combination number of the lock, said carrier roller also carrying a carrier member adapted to turn the unlocking disk to unlock the bolt.

18. A combination lock according to claim l5, wherein a turnable disk is provided to unlock the bolt and wherein the tumblers consist of turnable l disks, all said disks being arranged close by each other in parallel planes, the carrier roller being situated radially outside said disks and carrying radially projecting teeth of a number equal to the number of tumbler disks plus one, said teeth being each situated in the plane of one of said disks and adapted, at the oscillatory movement of the setting member, to turn one of said tumbier disks in accordance with the corresponding digit of the combination number of the lock and f to turn said unlocking disk to unlock the bolt, respectively, said teeth being spaced angularly in relation to each other in such manner that the tooth adapted to turn the unlocking disk follows the teeth adapted to turn the tumbler disks whereby the carrier roller is restored into initial position, when the bolt is unlocked by the unlocking disk.

19. A combination lock according to claim 15, wherein the` carrier roller carries radially projecting teeth of a number equal to the number of the tumblers, said teeth being each adapted to actuate one of said tumblers at the oscillatory movement of the setting member, a pawl and ratchet mechanism to turn the carrier roller stepwisely at the oscillatory movement of the setting member so as to bring said teeth consecutively into operative position to engage the corresponding tumbler and to set said tumbler in accordance with the corresponding digit of the combination number of the lock, and means to restore the carrier roller into initial position independently of the angular position of said roller.

20. A combination lock according to claim 15,

wherein means are provided to restore said carrier roller into initial position independently of the angular position of the roller, said means comprising means operable by the setting member to engage the tumbler setting means and the bolt unlocking means at the oscillatory movement of the setting member.

21. A combination lock according to claim 15, wherein a turnable disk is provided to unlock the bolt and wherein the tumblers consist of turnable disks, all said disks being arranged close by each other in parallel planes, the carrier roller being situated radially outside said disks and carrying radially projecting teeth of a number equal to the number of the tumbler disks plus one, said teeth being each situated in the plane of one of said disks and adapted, at the oscillatory movement of the setting member, to turn one of said tumbler disks in accordance with the corresponding digit of the combination number of the lock and to turn said unlocking disk to unlock the bolt, respectively, and wherein means are provided to restore said carrier roller into initial position independently of the angular position of the roller, said means comprising a toothed member adapted to co-operate with the setting member and carrying a plurality of teeth arranged in interspaced planes coinciding with the planes in which the teeth on the roller are arranged and adapted, at the oscillatory movement of the setting member, to be brought into engagement with the teeth of the roller.

22. In a combination lock, an oscillatory setting member, a plurality of tumbler disks and an unlocking disk adapted to control a bolt, all said disks beinor arranged close by each other and mounted for rotation around an axis coinciding with the axis of oscillation of the setting member, a setting tooth and a restoring tooth on each of said tumbler disks and said unlocking disk, a third tooth on said unlocking disk adapted to engage the bolt, a carrier roller rotatably mounted on the setting member excentrically in relation to the axis of oscillation thereof and radially outside said disks, a plurality of teeth on said roller projecting radially therefrom in interspaced planes each coinciding with the plane of one of the disks, a pawl and ratchet mechanism operable by the setting member to rotate said carrier roller stepwisely so as to bring the teeth of said roller consecutively into operative position to engage the setting tooth of the corresponding disk, whereby at the oscillatory movement of the setting member the tumbler disks are set in accordance with the combination number of the lock and the unlocking disk is turned so as to cause unlocking of the bolt by the engagement of said third tooth of the unlocking disk, said pawl and ratchet mechanism comprising a turnable toothed member having a tooth adapted to engage all of the teeth of the carrier roller to eiTect said stepwise movement thereof and a plurality of teeth arranged in interspaced planes coinciding with the planes in which the teeth of the roller are arranged and adapted, at the oscillatory movement of the setting member, to be brought into engagement with the teeth on the roller to restore said roller into initial position independently of the angular position of the roller, and a restoring bar carried by the setting member and adapted to engage the restoring teeth of the disks to restore said disks into initial position at the oscillatory movement of the setting member.

HERNFRID EVALD BERGGREN.

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