US1422820A - Lock - Google Patents

Description

A. BLOCK.

` LOCK.

APPLICATION FILED sIsPTfQ. I92o.

,422,820. Patented July 18, 19272.

miga naif-vulling o .encara itl it i@ as s in, it, s

ALEXANDER BLOCK, OF NEW YORK, Il. Y.

LOCK.

Application filed September 9, 1920.

To all 'whom t may concern Be it known that l, ALEXANDER BLooii, a citizen ot the United States, residing at New York city, in the county ot evv York and State ot New York, have invented certain new and useful Improvements in Locks, ot which the ifolloiving is a specification.

This invention relates to locks, and more particularly to locks of ther type disclosed in my co-pending applications, tiled July 13, 1920, Serial No. 395,890; andipril 6, 1920, Serial No. 371,73?.

The principal object ot the present invention is to improve the locking mechanism, by providing suitable and efficient means 'for moving the multiple headed bolt into engaging` position and tor locking said bolt against reverse movement from such position. 'l` his is accomplished in my co-peni'ling application of July 13th by means oi' a cam upon a shaft rotatable by means of key-operated mechanism. Said cam ivhen operated moves the hooked bolt into locking position and subsequently thereto moves said bolt into cngaging position, and dogs the bolt in such position. Reverse movement ot the boltV is prevented by said cam, reverse revoluble movement ot the cam being prevented by the Ward pins or" the cylinder lock or other key operated mechanism that may be employed. ln my previous invention the strain ot maintaining the bolt in its varying positions is placed upon the pins of the cylinder lock. This is obviated in the present invention by providing the lock With tivo bolts and a cam. @ne ot said bolts, is, as in the previous invention, a multiple-headed bolt, and the other, Which l designate an actuator bolt is arranged to move primarily'in a direction for moving the multiple-headed bolt into engaging position, and then to continue its movement longitudinally into locking position. The cam in the present invention is orn such construction that when operated, it moves the hooked bolt longitudinally, and as it continues its revoluble movement it Yforces said actuator bolt to lirst move inv a direction tor projecting the hooked bolt into engaging position and then to continue the movement of said actuator bolt longitudinally into locking position and in supporting` relation to saidhooked bolt. lt is obvious that such construction as shown in the present invention relieves the pins ot' the strain imposed upon them in the previous invention, and locks the hooked bolt in its projected po- ]Patented July 1&3, i922.

Serial No. 409,067.

sition far more securely than could be accomplished by the pins. A further advantage of such a construction is that the tivo bolts ivhen occupying their extreme operative positions, fill the entire openingot the keeper and I thereby prevent displacement of the locking mechanismv in a vertical direction, and this coupled with the impossibility of displacing the bolts in a longitudinal diiec- `tion affords complete protection against attempts to force open a door through the instrumentality ot' a jimmy or other instrunient designed to dislocate the locking mechanism With burglarious intent.

Another object ot' the present invention is to eliminate from the locking mechanism all springs, pavvls, carriers and other actuating devices commonly employed in locks. bv providing a cam of such construction that it 'will etliciently actuate said bolts in the abovedescribed manner, and dog said bolts in their operative or inoperative positions. Such construction is conducive to greater etticiency ot operation, renders the locking n echanism less likely to get out ot order. and cheapens the manufacturing cost ot the lock. Furthermore, the type ot lock described herein, employed in connection with my improved keeper disclosed in mv copending application #390511, tiled 'June 21st, 1920, and with my improvedcylinder lock disclosed in co-pending` application #37%,107 i'iled April 15, 1920, provides a complete burglar-prooflocking combination tor a door. lt is understood, however, that the lock described herein may be used in connection with any other type of keeper oit suitable construction, and the key-operated mechanism may be ot' a construction other than that shown herein.

turther object is to provide improved key'operated mechanism to operate said cani tor actuating the above-mentioned bolts, said mechanism being arranged to prevent reverse revoluble movement ot the cam, and thus reverse movement of the bolts, except by the instrumentality ot said mechanism.V

The construction ot the parts shown herein is to be taken as illustrative and not as dclining the limits of the invention.

The above-mentioned type is the preferred type. A modification thereof is also sliovvn and described below, comprising a multiple headed bolt mounted tor both slidable and pivotal movement on a shaft. A cam upon said shaft is arranged to move said bolt 'said bolt into engaging position.

vbolt affording longitudinally and to subsequently project This is more properly a modification of the type disclosed in my application filed July 13th, as the strain for maintaining the bolt in projected position is placed on the pins of the key operated mechanism, whereas in the preferred type shown herein absolutely no strain is borne by the pins, the said actuator powerful and unyielding means for locking the bolt with multiple heads against reverse movement from its engaging position.

Further objects and advantages will appear in the specification shown hei-ein.

The preferred and modiiied types of lock embodiedin my inventionv are shown in the accompanying drawing, wherein. Figure 1 shows a sectional elevation of the lock showing the disposition of the locking mechanism when in the unlocked state, and in broken lines showing part of the multipleheaded bolt in locking position prior to its movement into engaging position. Figure 2 shows the disposition of the mechanism with the hooked bolt in engaging position and the actuator bolt in locking position and in supporting relation with reference to said hook bolt. Figure 3 is a view of the hooked bolt shown in the above iigures. Figure a shows the cam partly in section on a line A-A in Figure 1. Figure 5 shows a crosssection of the lock on a line B-B in Figure 2. Figure 6 shows an edge view of the actuator bolt. Figure 7 is an elevation of the actuator bolt broken across. Figure 8 in a cross-section thereof. Figure 9 is a longitudinal sectional view of the lock on a line A-A in Figure 2. Figure 10 is a sectional view of the face plate of the lock casing, parts broken away, and showing a broken oli:1 section of the shaft, and recesses for housing a device for restricting the movement of the spindle key in and out of the lock body and for throwing the locking mechanism out of operation. Figure 11 is a member of said device. Figure 12 is another view of same. Figures 13 and 1e are two other members of said device. Figure 15 shows the key plug and the shaft for mounting the cam, and the manner in which said key plug and said shaft are connected for longitudinal adjustment. Figure 16 shows a broken off section of the face plate of the lock casing and a sectional view of the above-mentioned device. Figure 17 shows a view of the inner face of said shaft. Figure 18 shows an elevation of the spindle key broken across. Figure 19 is a cross-section thereof on a line B-B. Figure 2O is a cross section of said key on a line A-A showing the adjustable slide and spring thereon. Figure 1A is a sectional elevation of the modified type of lock7 showing the disposition of the mechanism when in the unlocked state. Figure 2A shows same with the mechanism in completely locked state. Figure 3A is the same with the bolt in locking position prior to being moved into engaging position. Figure 1^ shows the cam in this type. Figure 5^ is same partly in section. Figure 6^ shows the bolt of the modified type. Figure 7^ is an edgey view thereof. Figure 8^ is a longitudinal section of the lock on a line rit-A in Figure 2 and B-B in Figure 2A. Figure 9A is an elevation of the plate attached to the inner extremity of the rotatable key plug'7 showing the spring attached thereto. Figure 10A shows a longitudinal section of the key plug and an edge view of said plate with the spring attached thereto. Figure 11A shows the spring. Figure 12A is the spindle key. Figure 13A is an edge view thereof. Figure 14A is a pin key. Figure 15A shows a section of the lock casing7 the shaft and the device for throwing` the locking mechanism out of operation. I will now take up the description of the preferred type of lock embodied in mv invention, as shown in Figures 1 to 20. The lock casing a: is of the usual or any suitable construction. and contains a multiple-lisatied hooked bolt c, an actuator bolt fZ and a cam z. for actuating' said bolts. Hooked bolt c coinprisesa locking projection or head c1 carrying hooked bolts c2 on its outer or locking end. The shank portion c of said hooked boltmay embrace a longitudinal slot c ending in a slot o7 preferably vertically disposed thereto; a groove c4 on said shank c may run in a vertical direction to said slot c6; another groove on on said shank; and a grooved ledge cS projects from said shank and affords movable connection of said shank with said actuator bolt d; o5 designates a stud in said shankportion of bolt c Actuator bolt d is provided with a locking projection (Z1 on its outer or locking end; a groove (Z2, which may be a slot; studs E3 and (Z4, and a grooved ledge (Z5 projecting from said actuator' bolt for engagement of said actuator bolt with said hooked bolt and fording movable connection between them. The cam z, is mounted upon a rotatable cylinder or shaft j havin(r a keyway j. The cam describes the greater part of a circle which is concentric with said rotatable cylinder. The cam has a U shaped cut out at one side, one of the legs of the U being preferably shorter than the other, and having a stud h3 preferably in the extremity of the shorter leg and a stud fr" preferably in the extremity ofthe longer leg of said U. in its normal rest'position, cam /i has its U cut out embracing stud c5 in the bolt c, stud Iii" lying in the mouth of groove c? on said hooked bolt c, and stud not in operative association with any element either on hooked bolt 'c or on actuator bolt d.

Studs g and g1 in the casing are in operative association with hooked bolt c and are adapted to guide the movement of said hooked bolt in a longitudinal direction, and when said hooked bolt is moved into engaging position, said groove c receives stud y] in the casing, and stud g1 is made to lean against the rear edge of the bolt c. To the .end that said studs gk and gl guide and prevent vertical displacement of the hooked bolt during its longitudinal movement, and being brought into engaging. position with said bolt c during the movement of said bolt into engaging position, said studsact to prevent reverse movement otsaid bolt in areverse longitudinal direction.

The casing is also provided with grooves e and f in operative association with the actuator bolt d, which said grooves are adapted to guide primarily7 in a direction for moving the hooked bolt into engaging position subsequentlyT to the movement ot said hooked bolt into locking position, and after thus actuating said hooked bolt, to continue its movement in alongitudinal direction into locking position and in supporting relation with reference to said hooked bolt. The said grooves e and f, preferably on the casing, may be obliquely disposed on the casing and parallel to each other. Said grooves e and f terminate at one end in longitudinal grooves el and f1 respectively, and at the other end the said oblique grooves terminate in longitudinal grooves e2 and f2 respectively; said longitudinal grooves e1 and f1 'being in alinement with each other, and grooves e2 and f2 being in alinement with each other. The longitudinal grooves onthe casing are so positioned that the distance between longitudinal grooves f1 and f2 is approximately equal to the length of the hooks on the hooked bolt, and likewise with slots e1 and e2. Studs als and Z4 are normally taken into longitudinal slots f1' and el respectively, when said actuator bolt is in normal rest position. To the end that after the cam moves the hooked bolt longitudinally, the stud h2 of said cam enters groove Z2 on the actuator bolt CZ, and as said cam continues to move revolubly, said stud h2 forces actuator bolt Z to move toward its locking position; the obliquely disposed grooves e and f first guiding said actuator bolt through its studs Z3 and d* in a direction both vertical and longitudinal for moving the hooked bolt into engaging position, and as studs d3 and Z4 enter into longitudinal slots e2 and f2 said actua-tor bolt con-Y cally into engaging position along said shalt as a guide. Slot c in said hooked bolt with its vertically disposed branch slot el allows of the movement or said hooked bolt in the above-mentioned directions on saidv shalt as a guide. The diameter ot' said sha'lt j is preferably equal to the width ot' said slots.

When the camt is opera-,ted by shaft y', stud f1.3 in the cam moves in and out of groove c'l in bolt c, and in its movement in and out of said groove forces hooked bolt c to move into locking position. The direction taken by said cam when so operated is indicated by arrows lo and lul. lVhile said stud 71,3 lies in groove c4 and during its movement in and out of said groove, the said stud acts to prevent reverse movement oi',t said bolt from any position to which said cam had delivered it. Subsequently to the movement of said hooked bolt into locking position, however, stud 7a3 leaves groove cL and the function of dogging the bolt is assumed by the circular edge of the cam leaning against stud c in the casing. Said stud c5 is so positioned that during the entire revoluble movement of the cam subsequently to the evacuation oi groove c4 by stud h3 in the cam, the said cam is adapted to lean against it and prevent reverse movement of the hooked bolt from its locking position. During thc movement of said hooked bolt longitudinally by said cam, stud h2 is carried by projection h1 in the direction of arrows: 7c, and is delivered into engagement in groove Z2 in actuator bolt (l preferably simultaneously with the arrival of said hooked bolt into locking position. As the cam continues subsequently to move revolubly, stud h2 moves into said groove Z2 and forces actuator bolt I to move longitudinally and verticallv, bcing guided to move in said two directions by grooves e and on the casing, and said actuator bolt being in movable operative connection with the hooked bolt, causes said hooked bolt to move vertically into engaging position, and then the said actuator bolt continues to move longitudinally into its locking position, being guided in its movement by longitudinal grooves c2 and 7' on the casing. In such locking position, the locking projection Z1 on said actuator bolt d lills in the gap left when hooked bolt c is moved into engaging position, and thereby locks said hooked bolt against reverse movement from such position. The stud if in projection lil on cam 7i now occupies a position in groove (Z2 on actuator bolt (Z as shown in Figure 2, and acts to prevent reverse movement of said actuator bolt from its locking position except by the reverse revoluble movement of said cam L, which is controlled by key operated mechanism. It is evident that the hooked bolt is thus securely and powerfully locked against reverse movement in a vertical direction by the locking soy projection of the actuator bolt,andr is curely locked against reverse longitudinal movement, firstly by lates b1 and Z22 in keeper o; secondly by stud 05 in the hooked bolt leaning against cam t, and studs g and g1 in the casing with which said bolt is made to engage as it moves into engaging position in the keeper. Such a combination of locking elements, it is quite obvious, forms an effective and powerfully unyielding barrier to one whov attempts to force the lock through the instrumentality of a jimmy or other instrument with burglarious intent.

The actuator bolt ci normally occupies the position shown in Figure 1, with its studs at the bottom of the obliquely disposed grooves in the casing. During the mevementof the hooked bolt into locking position, said actuator bolt continues to occupy its normal rest position, firstly because it is movably connected with said hooked bolt; secondly ben cause upward displacement of the hooked bolt is prevented by guide studs g and g1, thus preventing the movement upward of said actuator bolt which direction it must first take in said oblique grooves in the casing before it can move longitudinally. lllhen the hooked boltis delivered into locking position, groove c on said hooked bolt is delivered into alinement with stud g in the casing, and the inner extremity of said bolt occupies'a position directly in front of stud g1 in the casing. lt is thus seen that .the position of the bolt now allows of its movement in a vertical direction. New as the actuator bolt is moved by the cam, and as said actuator bolt is in loose operative connection with said hooked bolt, the first impulse of said actuator bolt is to move along oblique groves e and 7, being guided in its movement by its studs which are taken into said grooves. This causes the actuator bolt to move hooked bolt c vertically until it reaches its engaging position. The actuator bolt (l now occupies a position with its studs at the upper extremities of the obliquely disposed grooves, and the locking projection (Z1 of actuator' bolt Z filling the gap left in the opening in the lock casing by the movement of the hooked bolt vertically into engaging position. As the cam completes its revoluble movement, the actuator bolt moves longitudinally, being n ow guided in its movement by its studs in longitudinal branch grooves e2 and f2, until it reaches the lockiiigposition shown in Figure 2.

Slot c6 is of a length suiiicient to allow of vthe complete movement of the hooked bolt in' and out of the casing, and its yvertical branch cT sufficiently long to allow of its complete vertical movement into and out of enga-ging position.

Taking up the modified type of lock as shown in Figures 1A to 15A, I will describe it in brief to show the underlying differences between this type and the preferred type described above. The locking mechanism of the modification comprises av hooked bolt and a cam, omitting the extra actuator bolt in the preferred type. Casing 1 contains modified bolt 2, havingk a locking projection 3 and hooked bolts 4 and e on its outer end. .A shaft 6 having a keyway 7a for holding a spindle key 7, affords mounting to bolt 2; said shaft running through a slot 16 extendinglongitudinally in said bolt 2. 15 designates a groove in the bolt, 14; a stud, and 13b another groove. lThe hooked bolt 2 is adapted to move in and out of the cas ing along said shaft as a guideA and when moved into locking position it'vis arranged to be projected into engaging position on said shaft as a pivot. Slot 16 in this type has no vertical branch slot as in the' preferred type. A cam 5 is mounted' upon the shaft 6 and is adapted to ymove revolubiy when the shaft is rotated by means of key operated mechanism or otherwise. Y Cam 5 is circular in shape, having an outer' edge describing for the most part the are of a circle concentric with the shaft 6. Cam 5 has a U shaped cut out, one yleg of the U having' a stud 8 near its extremity, and the other leg of said U having api-ejection or heel 9 at its outer end, when in normal rest position, the U cut out-'embraces stud 14: inthe bolt, with stud 8 in the cam lying in the entrance to groove 15 in thebolt. 131 is a stud in the casing adapted to be received in groove 13b in the bolt. 13 designates a stud also in the casing and adapted to limit the upward movement of said bolt. Vlien cam 5 is operated, stud 8 in the cam moves in and out of the groove 15-and causes the bolt 2 to move into locking position. Stud 8, then leaving the groove, the cam continuing its revoluble movement constantly leans against stud 14; in the bolt, and acts to prevent reverse movement of the bolt from its locking position. l/Vhen said `cam 5 has nearly completed its revolution, projection 9 encounters stud 1li in its upward sweep, bears against said stud and forces the bolt into engaging position. Reverse movement of said bolt from such position cannot be obtained except by reverse movement of the cam, and such reverse movement of the cam is obtained only by the operation of the key loperated mechanism. It is evident then that the function of maintaining the bolt in its projected position lies with the key operated mechanism, the strain being borne entirely by the pins of the cyl# inder lock.

lt must be clearly understood that do not mea-n to limit myself to the minor details of construction as'shown and described above in the preferred type and its modification. it is conceivable that slight changes in the structure may be made without departing from the spirit et the invention. For instance, a groove maybe replaced by a slot, or vice versa; or the studs and grooves may be interchanged--the element having the grooves may have studs and the element having the studs may have the grooves, to accomplish the same purpose itor which they are intended in the presentinvention. The above description gives only a conception of the invention in forms which l prefer, and it is evident that minor changes may be made that could not constitute a new invention.

The key operated mechanism shown in Figures 8A and 9 may be applied to either of the 'types shown and described herein. My preferred type of key operated mechanism is that shown in Figures 9 to 20. The present invention is an improvement upon the type of cylinder lock disclosed in my co-pending application tiled April l5, 1920, Serial No. 374,107. The changes made adapt said cylinder lock for use in connection with the improved springless and pawl-less locking mechanism employed in the above-described types of locks.

The cylinder lock comprises a tumbler barrel casing C having a rotatable key plug` K: said plug having a leyway K1. A flange K3 on the outer end ot the key plug lits into a grooved collar in casing C and prevents inward displacement oit said rotatable key plug. and a collar K4 preferably fastened to the key plug by means oli' a screw, about its inner extremity, prevents outward displacement ot said key plug. Projecting trom its inner extremity, said plug may have two tongues l@ for affording adjustable connection between the cylinder lock and the locking mechanism.

Lock casing a has or may have removable plate as which is or may be provided with a cylindrical member or bearing l0() having an inwardly extending Flange 71. Tumbler barrel casing C is provided with an outwardly extending` flange lill and is connected with said cylindrical member 100 `tor longitudinal adjustment. Cylindrical member lOOhas an inner and an outer opening. Its inner opening is normally covered by a plate 20 which may be attached to removable plate (1.3 by means ot screws 2W. shaft y' is or may be journaled at its outer end in a bearing 1,5 in casing a. and at its inner end in a bearing in said covering` plate 20. Said shaiit y' may be provided with a flange jl on its outer extremity litt-ing in a grooved collar in bearing a5 tor preventing` inward displacement. of said shaft. and a collar jt which may be fastened near the inner end of said shaft by means of a screw, for preventing outward displacement of said shaft. As shown, the cylinder lock C is arranged to slide within cylindrical member 100, and their flanges are adapted to engage when the cylinder lock is moved outwardly, said flanges thus operatingto prevent removal of the cylinder lock from the cylindrical member of the casing through its outer opening.

'l'he cylinder lock thus connected with said casing for longitudinal adjustment for varying thicknesses of doors. The adjusting device comprises a machine screw or screw bolt s, the head portion of which is j ournaled in a bearing in said covering` plate 20, and having a collar s1 for preventing independent movement longitudinally of said screw. The threaded portion ot said screw is arranged to'be received in a threaded bearing in flange WV ot tumbler barrel casing C. It is evident that when screw s' is operated by means of a screw driver or other suitable instrument, cylinder lock C is caused to move longitudinally within cylindrical member 100, and the adjustment can thus be made from the inner aspect of removable plate as or rather covering plate 2O for different thicknesses of doors. In assembling the lock for attachment to adoor, the cylinder lock is introduced with its outer extremity iirst, through the inner opening of the cylindrical member 100, and is passed through the outer opening of the cylindrical member. Screw s in covering plate 20 is then screwed a distance into flange lll of cylinder lock C, and covering plate 2O is attached by means o't' screws 20a to removable plate a3. A hole is then cut in the door D of a size large enough to admit cylindrical member 100. The cylindrical member and the cylinder lock are then inserted into said hole in the door` until removable plate cl is flush with the door. Then by turning the screw with a screw driver in thedesired direction from the inner side of said covering plate 20. the longitudinal adjustment is easily made for that particular door. The removable plate and said cylinder lock are now withdrawn `trom the hole in the door, the plate is attached to the lock body by means ofa screw or other suitable means, and the entire combination may now be applied to the door and fastened thereto by any suitable means. An escutcheon plate P is provided for covering up the outer opening in the door, exposing to view only the rotatable key pluginto which the pin key must be inserted for operating the locking merhanism.

The spindle usually employed for effecting operative connection between the rotatable key plug and the locking mechanism is replaced in the present invention by improved means shown herein. Through the entire length or shaft j runs a keyway js for a spindle key 7. Near its inner end and eX- tending for some distance in the shaft j, said sha-ft is provided or may be provided with slots y2 preferably vertically disposed to said keyway jg; said slots jg being adapted to re- -when they are moved revolubly by rotating the tumbler barrel K, they are adapted to cause shaft j to rotate for operating the locking mechanism. It is obvious that when y.the tumbler barrel is locked, shaft j will be locked against revoluble movement, and thus the locking mechanism will be locked against reverse movement from whatever position they might have been delivered to during the operation of said cylinder lock.

The cylinder lock is or may be, as usual, operated by means of a pin key from the outside of the door for operating the locking mechanism. From the inside of the door however, the looking mechanism is usually operated by means of a knob and an extra cam, necessitating the employment of pawls and springs .for maintaining the locking mechanism in operative or inoperative positions. In the present invention however, the springless and pawl-less locking mechanism and the improved construction of said mechanism precludes the necessity of and renders undesirable the employment of a knob and an eXtra cam for operating the locking mechanism from the inside of the door. I therefore employ a key 7 of specific construction, and which I designate a spindle key. Said spindle key is or may be arranged normally to be maintained as a fixture in the lock body, being mounted in shaft j, passing through a keyway js in said shaft, and arranged to move longitudinally within said shaft and into key plug K for unlocking said plug and operating same and to simultaneously rotate the shaft for operating the cam and thus actuating the locking mechanism.

The type of spindle key shown in my application of July 13th, and the one shown in the present invention in Figures 8^ and 12A, is intended to remain as a permanent fixture within the lock, and is Lnot removable entirely, being only movable a distance in and out of the lock casingr for operating the cylinder lock and the locking mechanism. Tere said spindle key to be removed entirely, operation of the tumbler'barrel by means of a pin key inserted from the outside, would fail to operate the locking mechanism which would thus remain in the state in which it happened to be at the time.

The type of construction shown in FigureV 9 and described above, allows of the complete removal of the spindle key when desired or required. This feature adds considerably to the further protection ofa door against burglarious attempts to gain admission. It is commonly known that when burglars cannot readily force open a door through the instrumentality of jimmying the bolt or keeper, particularly on doors having glass or thin wooden panels, they cut or break an opening in said panel near the knob or key projecting from the lock body on the inside of the door, and then introducing the hand or an instrument, turn the knob or key and thereby operate the locking mechanism and gain admission. In the preferred type of construction in the present invention as shown in Figure 9, itis possible to avoid such'a contingency by entirely removing said spindle key from the lock body, and because of the loose connection between the tumbler barrel and the shaft for operating the locking mechanism, a pin key inserted from the outside into said tumbler barrel will operate said tumbler barrel and likewise the locking mechanism. This oper ates as a considerable advantage particularly when the lock is applied to doors entering into stores or buildings or apartments safeguarding valuables. Should the burglar break a glass panel or drill a hole in the wooden panel, he will not be able to gain admission by operating the lock in the above' described manner. The only way for operating the locking mechanism is by means of a key that will unlock and operate the Vcylinder lock.

The spindle key 7 as shown in Figure 18, is however, intended to be normally partly confined within the lock body, a portion projecting therefrom for the purpose of manipulating the key when required to operate the locking mechanism from the inside. Means are provided for restricting its movement in and out of the lock body-inwardly, to a distance sullicient to allow of the unlocking of the tumbler barrel and operation of same for operating the locking mechanism; and outwardly, a sufficient distance for allowing of the insertion of the pin key from the outside into said tumbler barrel for operating the locking mechanism from the outside of the door. l/Vith these objects in view, spindle key 7 is provided with a bitted member 87s, a spindle portion 7 and a head or thumb member Td for manipulating said key. Running longitudinally in spindle portion 7 is or Ymay be a groove or slot 72 which is adapted to receive a spring-pressedv pin for restricting its movement outwardly to a distance sufficient to allow of the insertion of a pin key in the tumbler barrel from the outside, and for restricting the movement of said key in the direction into the tumbler barrel to a distance not sutiicient for operating thn tumbler barrel and therefore preventing the operation of the locking fl O Cfr

mechanism. The reason for this arrangement is this: Although an extremely and well-nigh impossible operation, a burglar possessing inordinate skill and patience might introduce a delicate instrument into the key plug, and seizing the inner end of the spindle key, draw said key into the tumbler barrel and thereby unlock said barrel and be able to operate the locking mechanism. The present construction of the spindle key and the spring pressed pin normally received within said groove it precludes the possibility of such an operation. Should the burglar succeed in seizing the spindle key, he will be able to draw it into the tumbler barrel only a limited distancea distance not suflicient for operating the cylinder lock and thus will fail to operate the locking mechanism. y

After operating the locking mechanism by means of said spindle key, the key must be withdrawin a distance from the lock body to allow ofthe re-engagement of said springpressed piu in the groove Tt of said spindle key. Should the key be inadvertently left full length in said tumbler barrel, the barrel would remain unlocked and would be operable from the outside without the use of a key-that is, the pin key required for operating the cylinder lock from the outside. Any one could then operate the locking mechanism from the outside with any small instrument that will rotate the key plug. To obviate this emergency and to correct' such a drawback, I have provided said key with an adjustable device for automatically withdrawing said spindle key from said tumbler barrel a dist-ance sufficient to allow of the re-engagement of said key by means of its groove Tt with pin n, for restricting the movement of said key into the tumbler barrel. Said adjustable device comprises preferably a slide q and a spring r attached thereto, and which may be of rectangular shape as shown in the drawing Figure 19. Said slide is movably mounted on the spindle portion T of said spindle key. and may be adjusted and fixed to any portion of spindle 7 by means preferably of a screw g1; thus rendering it possible to adjust the position of said spring j' on said key for varying thicknesses of doors.

rlhe device for restricting the movement of thc spindle key in and out of the lock body, comprises a pin a adapted to be received into groove Tt in the spindle key T. Said pin u is attached by `one end to a bearing nl shown in Figures l1 and 1Q. Contained in said bearing is or may be a plurger m3 having a` flange an? at one extremity and a head portion m. for manipulating the spring-pressed device when required. Pin n lies in and passes through a hole jf in flange j1 of shaft j, and its bearing al and its plunger ms normally occupy a recess in said flange. This device is maintained in its normal posit-ion for restricting the inward and outward movement of the spindle key by means of a spring-pressed plunger having a spring-bearing portion ni" and a plunger portion a4 that normally leans against bearing nl and maintains said bearing and the pin n in normal rest position with the pin in engagement with the spindle key. The spring-bearing member' a3 of plunger nfl' lies in and is arranged to move in a recess j8 in bearing a5 on casing a. Member 113 carries preferably a compression spring which is arranged to be compressed by plunger n4, when the restricting device n--m is moved in a direction away from the spindle key. When said key restricting device is moved in said direction it causes plunger n4 to move into recess js and compress spring a5, the movement of the device being arrested when plunger at moves entirely into recess jg. Bearing al with its plunger m3 would then occupy a position within recess j7 in flange a5 on the casing c. Should m be released, plunger n4 under the impulse of sprin a5 will immediately return the restricting device to normal position. lf it is desired however, to throw this restricting device out of operation or to throw the entire locking mechanism out of operation, said device is moved to the above-mentioned position against the action of said spring a5, and plunger m3 is then moved longitudinally in its bearing nl for delivering its flange m2 into holes jG in casing a thus preventing rotation of part jl. lt is evident then that device a-m has two functions-` one for normally restricting the movement of said spindle key inwardly and outwardly,y and secondly for rendering the locking mechanism inoperative even by the use of the proper key from the outside or the inside of the door. his added feature is an advantage when an apartment or house is locked up for the night-all the members of the family at home, and it is desired to render the locking mechanism inoperative from the outside of the door even by the proper key.

In a modiied type of spindle key, as shown in Figures 9^, 10A and 11A, the spring for automatically withdrawing the key a distance is attached to plate 2l fastened to the inner end of key plug K. Said spring 22 has preferably a slot 22h through which passes a spindle key S70, and which is not wide enough to admit spindle portion T of said key. To the end that when said key is moved full length into the tumbler barrel,

shoulders 7 bear against said spring and cause the key to enter'against its resistance. `When the operation is completed, spring Q2 bears against shoulders 7 and moves the spindle key a distance out of the key plug and thus locks said key plug.

In Figure 15A is shown a inodilied type of device for rendering the locking mechanism inoperative. 1t comprises a pin v32 adapted to move into a hole 33 in shaft 6; said pin being attached to a slide member' 3l, to which is attached a push member 30 passing through and adapted to slide in a slot in the casing 1. When it is required to throw the locking` mechanism out of operation, ain 32 is moved into hole 33 in shaft 6.

The above-described types of locks are preferably used in connection with my improved keeper, wherein M represents the mortise plate, LS the rim plate, B the machine screws for fastening the two plates to a door j amb or mate door, and W' designates a wood screw for fastening the lee' of said keeper to said jamb.

The operation of the lock is as follows:

A pin key inserted into the tumbler barrel from the outside unlocks said tumbler barrel in the usual manner. Then upon rotation or" said tumbler barrel by said key, shaft y' is caused to operate cam t for actuating the bolts in the preferred type in the above-described manner. For performing the vlocking operation the key is turned in one direction and for unlocking said key is turned in the reverse direction. For unlocking the door, cam h is caused to move revolubly in a direction opposite to that indicated by arrows in Figurel. StudA lz? in said cam /t forces actuator bolt Z to return wholly within the casing, and to simultaneously move the hooked bolt c out of its engagingposition. Said stud Iz? now leaves groove cl2 in actuator bolt d', yand as the cam continues in its revolublc movement, it dogs the hooked bolt in its locking position by leaning against stud o5 in the hooked bolt c. Then stud h3, re-entering groove c4 in the hooked bolt, said hooked bolt is moved into its unlocking position during the completion of the revoluble movement of the cam t, and is maintained in that position by said cam stud its lying normally Within groove o, and preventing movement of said hooked bolt out of the casing except by the instrumentality of said cam.

To operate the locking mechanism' from the inside by means of the spindle key, the restricting device nf-m is disengaged from the spindle key, then the key is moved into the lock body as far as it will go against the resistance of the spring r attached to slide g. Then upon rotation of said tumbler barrel, which has been unlocked by said spindle key, shaft y' is caused to rotate and operate the cam for actuating the locking mechanism in the above-described manner. Upon releasing of device n-m, and upon release of the spindle key, spring r on slide q will automatically withdraw said spindle kev a distance, said spring pressed device will move automatically into engagement with said spindle key, pin a being received into groove Tt in said key for restricting the movement of said key in a direction inwardly and outwardly.

l/Vhen required, the device nf-m is pressed back and spindle key 7 is entirely withdrawn from the lock body for' the purposes abovedescribed, and if it is desired to allow of the operation of the locking mechanism from the outside after so withdrawing the spindle key, 'said device nf-m is allowed to return to its normal rest position under the impulse of its spring. Should it be desired, however, to render the locking mechanism inoperative from the outside, said device n-m is pressed back completely, and plunger m3 is moved longitudinally in bearing nl for delivering flange mi into 'hole j/'G in casing a. This tends to lock shaft j against revoluble movement and thus prevents operation of the locking mechanism when tumbler barrel K is unlocked by the proper key. To render the locking mechanism operable, flange m2 is withdrawn from hole js in the casing and device 'rzm is allowed to return tonormal position under the impulse of its spring a5.

Having thus fully described the invention what I claim as new and desire to secure by Letters Patent, is:

1. In a lock, the combination of an actuator and a hooked boltconnected together for longitudinal movementrelatively to each other, means for moving said hooked bolt and for subsequently causing said actuator to move in a direction for projecting the hooked bolt into engaging position, and to then move said actuator into its extreme operative position and into supporting relation with reference to said hooked bolt.

2. In a lock, the combination of an actuator and a hooked bolt connected together for longitudinal movement relatively to each other, means for moving said hooked bolt longitudinally and for subsequently causing said actuator to move said hooked` bolt into engaging position land to then cause said actuator to move into its extreme operative position to dog said hooked bolt in such position. n

3. ln a lock, the combination of a hooked bolt with an actuator bolt connected together for longitudinal movement relatively to each other, means for moving said hooked bolt and for subsequently moving said actuator bolt in a direction for primarily projecting the hooked bolt into engaging position and to then move said actuator bolt into closure locking position, for locking said hooked bolt in said projected position.

t. In a lock, the combination of a hooked bolt with an actuator bolt, connected together for longitudinal movement relatively to each other, said actuator bolt being normally wholly coniined within the casing, and

means for moving said hooked` bolt and to subsequently cause said actuator bolt to move said hooked bolt into engaging position and to then move said actuator bolt into closure locking position'to dog the hooked bolt in its engaging position, said actuator bolt being arranged to move its locking projection out of the casing when moved by said means into locking position.

5. 1n a lock, the combination oil a hooked bolt with an actuator bolt, and a cam for moving said hooked bolt and tor subsequently causing said actuator bolt to move rst in a direction tor moving the hooked bolt into engaging` position and then to move into closure locking position, independently of said hooked bolt and in supporting relation with reference to said hooked bolt.

6. ln a lock, the combination ot an actutor bolt with a hooked bolt connected together for longitudinal movement relatively to each other, said actuator bolt being normally Wholly confined Within the casing, and a. cam tor moving the hooked bolt and tor subsequently forcing said actuator bolt to project said hooked bolt into engaging position, and to then move said actuator bolt independently ot' said hooked bolt into closure locking position to deliver a locking projection thereof out ot the casing and to dog the hooked bolt in its engaging position.

7. ln a lock, the combinatio-n ot a hooked bolt and an actuator bolt connected together tor longitudinal movement relatively7 to each other, said actuator bolt being normally Wholly confined Within the casing, and a cam tor moving` the hooked bolt, said cam acting to prevent reverse movement ot said hooked bolt, and subsequently thereto for actuating said actuator bolt and tor causing said actuator bolt tomove said hooked bolt into engaging position, and then delivering said actuator bolt into closure locking position and in supporting relation With reference to said hooked bolt.

8. ln a lock, the combination of a hooked bolt with Van actuator bolt connected together `tor longitudinal movement relatively to each other, and a cam for moving said hooked bolt on said actuator' bolt and individually ot said actuator bolt, and subsequently thereto for moving said actuator bolt on said hooked bolt and individually ot said hooked bolt tor moving said hooked bolt in a. direction to deliver said hooked bolt into engagingposition, and then delivering said actuator bolt into a position tor clogging said hooked bolt in its engaging position.

9. ln a lock, the combination ot a hooked bolt with an actuator bolt connected together tor longitudinal movement relatively to each other, and a cam tor moving said hooked bolt longitudinally and to dog said bolt in said position, and subsequently thereto tor causing said actuator bolt to move in a. di-

rection for moving the hooked bolt into engaging position and tor then moving said actuator bolt into a position tor maintaining said hooked bolt against reverse movement 'from its engaging position.

l0. 1n a lock, the combination ot a hooked bolt and an actuator bolt connected together i'or longitudinal movement relatively to each other, said hooked bolt being adapted to move longitudinally in and out ot the casing, means tor guiding the longitudinal movement of said hooked bolt in and out ot the casing, said means being adapted to prevent vertical movement ot said hooked bolt during its longitudinal movement, said guiding means being arranged to allovv ot said vertical movement of said hooked bolt when said bolt is moved into locking position prior to being moved into engaging position, and a cam tor moving said hooked bolt into locking position and tor subsequently actuating said actuator bolt tor primarily causing the hooked bolt to move into engaging position and then delivering said actuator bolt into locking position to prevent reverse movement of said hooked bolt from its engaging position except by the instrumentality ot said cam.

l1. 1n a lock, the combination ot a hooked bolt with an actuator bolt connected together tor longitudinal movement relatively to each other, a cam 'for moving said hooked bolt and tor subsequently actuating said actuator bolt tor the purposes to cause said actuator bolt to move in a direction for projecting said hooked bolt and then to move said actuator boltinto a posit-ion partly outside the casing, means being provided tor guiding said actuator bolt.

12, 1n a lock, the combination oLt a hooked bolt- With an actuator bolt, a cam tor moving said hooked bolt and tor subsequently moving said actuator bolt Yfor projecting the hooked bolt into engaging position and lor then delivering said actuator bolt into locking position, means tor actuating said cam, said cam acting to prevent reverse movement ot said actuator bolt and thereby said hooked bolt trom its engaging position except by 'the instrumentality ot said means.

13. In a lock, the combination ot an actuator bolt with a hooked bolt, said bolts being connected together tor longitudinal movement relatively to each other, a longitudinal slot in said hooked bolt terminating in a substantially vertical slot, a shatt and a cam thereon, said cam having tivo elements, one ot said elements engaging the hooked bolt, and the other element subsequently engaging' the said actuator bolt, both of said elements to successively actuate said bolts and to prevent the return ot said bolts except by the reverse movement ot said cam.

14. ln a lock, the combination ot a hooked bolt with an actuator bolt, said bolts being connected together for longitudinal movementl relatively to each other, an opening in said hooked bolt allowing of its movement in two directions, a shaft running throuo'h said opening, a cam upon said shaft, said cam having two elements, one of said elements engaging the hooked bolt and the other of said elements subsequently .engaging the actuator bolt, said element engaging with'a hooked bolt actuating said hooked bolt when the cam is operated, and the element engaging with the actuator bolt actuating said actuator bolt subsequently to the operation of said other element for moving said hooked bolt in another direction and to lock said hooked bolt in such position.

15. ln a lock, the combination of one element having a locking projection with another element having a locking projection, said elements having means connecting them together for longitudinal movement relatively to each other, an opening in one of said elements allowing of the movement of that element` in two directions, a shaft passing through said opening, a cam upon said shaft, means on said cam to engage with one of said elements for moving said element in one direction, and additional means on said cam to subsequently engage said other element to cause said other element to move the previously7 actuated element in a second direction, and to then move said other element into closure locking position to lock said previously actuated element against reverse movement from the position to which it had been delivered except by the reverse movement of said other element.

16. In a lock, the combination of a'first element having a locking projection with a second element havinga locking projection, said elements being connected together for longitudinal movement rela-tively to each other, an opening in said first element allowing of its movement in two directions, means for guiding its movements in said directions,- means on said second element coacting with means on the lock casing for guiding the movement of said second element in two directions, a shaft passing through said opening in said first element, a cam upon said shaft, means associated with said cam to engage with said first element for moving said element in one direction, and additional means upon said cam to subsequently engage with said second element for moving said element along its guides in a direction to cause said first element to move into engaging position, and to lock said` first element in such position.

17. In a lock, the combination of two elements each having a locking projection and connected together for longitudinal movement relatively to each other, revoluble means for impelling one of said elements translationally in one direction, and for subsequently forcing the otherof said elements to impel the previously actuated element translationally in another direction, and means for operating' said revoluble means forward vand reversely to move both of said elements successively into closure locking position and to withdraw same.

18. In a lock, the combination of a lock casing having studs and grooves, a hooked bolt movable in and out of said casing, an actuator bolt having a locking projection and connected with said hooked bolt for longitudinal movement relatively to each other, said studs on the casing being arranged to guide the movements of said hooked bolt, studs on said actuator bolt adapted to be taken into said grooves on said lock casing for guiding the movements of said actuator bolt, and revoluble means for moving said hooked bolt individually on said actuator bolt translationally in one direction, and for subsequently moving said actuator bolt individually on said hooked bolt for moving said hooked bolt translationally in another direction, and delivering` said actuator bolt into locking position to dog saidhooked bolt, and means for operating said revoluble means forward and reversely to move said bolts in the above manner and to withdraw said actuator bolt and cause said actuator bolt to withdraw the hooked bolt from its engaging position to nally allow of the withdrawal of said hooked bolt by said revoluble means to unlocking position.

19. In a lock, the combination of a hooked bolt with an actuator bolt connected together for longitudinal movement relatively to each other, means guiding the movement of said hooked bolt translationally in two directions, additional means guiding the movement of said actuator bolt translationally in two directions, a shaft, a cam thereon, a pair of studs in said cam, one of which engages the hooked bolt, and the other of which studs subsequently engages the actuator bolt, both of said studs to actuate said bolts in the manner and for the purposes herein substantially,described, and to prevent the return of said bolts except by the reverse movement of said cam.

20. In a lock, the combination of a hooked bolt and an actuator bolt, a shaft, a cam upon said shaft, a pair of studs in said cam, one of which engages the hooked bolt, and the other of which subsequently engages the actuator bolt, the one of said studs to move said hooked bolt translationally in one direction, and the other of said studs to subsequently cause said actuator bolt to move the hooked bolt translationally in another direction and to prevent the return thereof except by the reverse movement of said cam.

2l. In a lock, the combination of a hooked bolt and an actuator bolt connected together for longitudinal movement relatively to each other, a shaft, a cam thereon, a stud in said bolt, a pair ot studs in the cam, one of said studs normally engages the hooked bolt, the other or' said studs subsequently engages the actuator bolt when the previously actuating stud is disengaged from said hooked bolt, both of said studs to successively actuate their respective bolts, said hooked bolt stud acting to prevent the return of said hooked bolt While it is in engagement With said hooked bolt except by reverse movement ot said cam, and said cam acting to prevent the return ot said hooked bolt subsequently to the release hereof by said stud in the cam which then continues to lean against said stud on the hooked bolt during the completion of its revoluble movement, and said stud for actuating the actuator bolt acting to prevent the return oit said actuator bolt and ot the hooked bolt except by the reverse revoluble movement of said cam.

2Q. ln a lock, the combination of a lock casing, irregular shaped grooves in the casing, a hooked bolt and an actuator bolt connected together tor longitudinal movement relatively to each other, said actuator bolt having studs adapted to be taken into said grooves in the casing, one stud in each groove, and a cam for moving said hooked bolt translationally in one direction, and 'tor subsequently actuating said actuator bolt to cause it to be guided by its studs in a direction for moving said hooked bolt into engaging position and then to move into locking position to prevent the return of said hooked bolt from its engaging position except by the reverse movement of said cam.

23. ln a lock, the combination oi' a hooked bolt adapted for slidable and pivotal movement and a cam for moving said hooked bolt and for subsequently projecting said bolt into engaging position.

24. In a lock, the combination of a cam and a hooked boltl adapted for slidable and pivotal movement, said cam to move said hooked bolt and subsequently project said bolt into engaging position, and prevent the return thereof except by reverse revoluble movement of said cam.

25. ln a lock, the combination oi a hooked bolt adapted Jfor slidable and pivotal movement. a shaft, a cam thereon tor movingsaid hooked bolt and for subsequently projecting said bolt into engaging position and to dog said bolt in such position.

26. ln a lock, the combination ot a hooked bolt adapted tor slidable and pivotal movement, a shaft, a cam thereon, a pair of elements connected to said cam, one ot which engages with said bolt to move said bolt translationally in one direction, and the pire other ot which engages with said bolt subsequently to move said bolt subsequently translationally in another direction, the said elements and the cam being adapted to prevent return ot said bolt except by the re- Y movement ot said cam.

In a lock, the combination of a hooked bolt adapted for slidable and aivotal movement, a slot in said bolt, a sha t taking into said slot, a cam upon said shaft, means for rotating said shaft to operate said cam for moving said bolt longitudinally along said shaft as a guide and :tor subsequently moving said bolt into engaging position on said shatt as a pivot, and to dog said bolt in said engaging position.

28. In a lock, the combination of a hooked bolt., a slot in said bolt, a shaft taking into said slot, a cam upon said shaft, a stud in said cam normally in engagement with said bolt. and a projection on said cam normally not in engagement with said bolt, and means for rotating said shaft and operating said cam to cause said stud in the cam to move said bolt translationally in one direction, said stud acting to prevent reverse movement of said bolt during said translational movement and adapted to be disengaged from said bolt subsequently to said movemeut, the cam in continuing its revoluble movement then acting to prevent the return movement of said bolt except by reverse movement of said cam, and to finally cause said projection on the cam to engage with and move said bolt in another direction and to dog said bolt in such position.

29. In a lock, the combination of a hooked bolt, means restricting its movement longitudinally, means restricting its movement vertically, a slot, a groove and a stud in said bolt` a shaft passing through said slot in the bolt, a cam upon said shaft, a stud in said cam and a projection on said cam, and means tor operating said cam to cause said stud in the cam to move in and out ot said groove in the bolt for movingsaid bolt, and then continuing the revoluble movement of said cam to cause said cam to constantly lean against said stud, in the bolt for preventing reverse movement ot said bolt except by reverse movement ot said cam and linally to deliver said projection on said cam into engagement with said stud in the bolt for projecting said bolt into engaging position and to dog said bolt in such position, reverse movement of said cam being prevented except by operation ot the means for operating said cam.`

30. ln a lock, the combination of a bolt having a plurality of hooked bolts on its outer or locking end with an actuator bolt, and means for moving said multiple hooked bolt translationally in one direction, and subsequently causing said lactuator bolt to move said multiple hooked bolt translationally in another` direction and to prevent rei rality of connected hooked bolts with an actuator bolt, said actuator bolt and said connected hooked bolts being` connected together for longitudinal movement relatively to each other, means for moving said connected hooked bolts into locking position, and subsequently actuatingl said actuator bolt for moving said connected hooked bolts into engaging position and to lock said hooked bolts against reverse movement eX- cept by the reverse movement of said actuator bolt, said means being adapted to prevent return of said actuator bolt except by reverse movement of said means.

32. In a lock, the combination of a bolt having a plurality of hooked bolts on its outer end, and Van actuator bolt connected with said multiple hooked bolt for longitudinal movement relatively to each other, means for guiding the movement of said multiple Jhooked bolt in translationally` tivo directions, and a cam for moving said multiple hooked bolt translationally in one direction and subsequently to move said actuator bolt in a direction for moving` said multiple hooked bolt translationally in another direction, and then delivering said actuator bolt into locking position to prevent return movement of said multiple hooked bolt except by reverse movement of said actuator bolt, said cam being arranged to prevent reverse movement of said actuator bolt except by reverse revoluble movement of said cam.

33. Ina lock, thecombination of a multiple hooked bolt with an actuator bolt connected together for longitudinal movement relatively to each other, a slot in said multiple hooked bolt, a shaft taken into said slot, a Cam upon said shaft, a pair of elements in said cam, one of which engages said uniltiple hooked bolt to move said bolt translationally in one direction, andthe other of which subsequently engages said actuator bolt to force said actuator boltto move the multiple hooked bolt translationally in another direction and then to deliver said actuator bolt into locking position to prevent the return movement of said multiple hooked bolt eX- cept by reverse movement of said actuator bolt, and to prevent reverse movement of said actuator bolt except by reverse movement of said cam,

34. In a lock, the combination of a plu'- rality of connected hooked bolts, a shaft, a cam thereon, and means for operating said cam to cause said cam to move said bolts on said shaft as a guide and for subsequently projecting said bolts into engaging position on said shaft as a pivot and to prevent the return of said bolts from said projected position except by reverse movement of said cam, reverse revoluble movement of said cam being prevented except by the operation of said means.

35. In a lock, the combination of a locking mechanism, means for actuating` said locking mechanism, key operated mechanism for operating` said actuating means, and a spindle key arranged to operably connect said key mechanism with said actuating means, to operate said actuating means.

Y 3G. In a lock, the combination of a rotatable tumbler' barrel and a rotatable cylinder connected together for longitudinal adjustment relatively to each other, ay keyWay in said rotatable cylinder in alinement with a keyivay in said tumbler barrel, and a spindle key normally operably connecting said tumbler barrel with said cylinder, said spindle key being movable longitudinally in said keyivays for unlocking and operating said tumbler barrel to allow of the operation of said rotatable cylinder.

37. In a lock, the combination of a tumbler barrel having a keyivay and a rotatable Y cylinder having a keyWay in alinement With said keyway in the tumbler barrel, said tumbler barrel and said cylinder being connected together for longitudinal adjustment relatively to each other, and a removable spindle key movable longitudinally in saidl keyivays for unlocking ysaid tumbler barrel to allovv of the operation of said tumbler barrel and of said cylinder, means being provided for normally restricting the longitudinal movement of said spindle key into and out of said tumbler barrel keyway.

38. In a lock, the combination of a lockino' mechanism, means for actuating said locrling mechanism, a rotatable cylinder, a tumbler barrel, said tumbler barrel and said cylinder being connected together for longitudinal adjustment relatively to' each other, a keyivayin said cylinder in alinement With a. kcyWay in the tumbler barrel, and a removable spindle key movable longitudinally in said keyways for unlocking and operating said tumbler barrel to allow of the operation of said rotatable cylinder and said actuating means, means being provided for normally restricting the movement of said spindle key into and out of said tumbler barrel.

39. In a lock, the combination of a rotatable key plug, a rotatable cylinder, said key plug and said cylinder being connected together for longitudinal adjustment relatively to each other, said tumbler barrel being adapted to rotate said cylinder, and havinga keyWay in alinement With a key- Way in said cylinder, locking mechanism, and means upon said cylinder for actuating said mechanism, and a spindle key longitudinally movable in said cylinder and said rotatable key plug for unlocking said key plug and rotating said rotatable cylinder tor operating said actuating means.

40. .ln a lock, the combination ot a rotatable key plug having a keyway and a rotatable cylinder having a keyway in alinement with said other keyway, and a removable spindle key for operating said rotatable key plug to allow of the operation of said rotatable cylinder, means associated with said spindle key for restricting its movement into and out of said key plug, and means tor automatically withdrawing said spindle key from said key plug a distance to allow or the locking of said key plug for preventing operation of said key plug 'from that side of tie door not controlled by said spindle key except by the proper key.

41. 1n a lock, thecombination or a rotatable key plug and a rotatable cylinder connected together for longitudinal movement relatively to each other, connecting keyways in said plug and cylinder, and a spindle key normally contained in said keyways but removable therefrom, said spindle key being movable longitudinally within said keyways for unlocking said key plug and operating said cylinder, a springpressed device being provided for restricting the movement of said key into said key plug to a distance insuiiicient for unlocking said key plug, and to a distance out of said key plug to a distance to allow ot the insertion of a key into said key plug trom the side of the door not controlled by said spindle key tor operating the key plug from that side, and additional means associated with said spindle key Jfor automatically withdrawing said Spindle key a distance from said key plug to relock said plug and prevent operation thereof by means other than the proper key from the side not controlled by said spindle key.

42. In a lock,'the combination of a rotatable key plug and a rotatable cylinder connected together for longitudinal adjustment relatively to each other, connecting keyways in said plug and cylinder, and a removable spindle key normally contained within said keyways and extending a portion of said key beyond the lock body for manipulation of said key, said spindle key being movable longitudinally into said key plug for unlocking and operating said plug and said cylinder, and removable from said plug a distance to allow of the relooking of said plug and said cylinder, and a spring-pressed device normally in engagement with said key for restricting its movement into said key plug to a distance short of unlocking said key plug, and to a distance out of said key plug sufficient to allow of the operation of said key plug by means of the proper key from that side of the door not controlled by said spindle key, an adjustable slide carrying a spring being attached to said spindle key Jlor automatically withdrawing said key from the rotatable key plug a distance to allow of the relooking of said key plug and ot said cylinder.

43. ln a lock, the combination oi a rotatable key plug and a rotatable cylinder in operative connection with each other and having keyways in alinement with each other, and a removable spindle key normally lying in said keyways and movable longitudinally therein for unlocking said key plug and operating said cylinder, a spring-pressed pin normally engaging said key for restricting the movement of said key in and out of said key plug as substantially described and for the purposes designated, means in operative connection with said spring-pressed pin for disengaging said pin from said key to allow ol the movement of said spindle key into said'rotatable key plug a suiiicient distance for unlocking and operating said key plug and operating said cylinder, and a slide adjustable on said spindle key and carrying a spring for automatically withdrawing said key a distance from said key plug to allow of the relooking of said key plug and to allow of the re-engagement of said springpressed pin with said spindle key.

44. In a lock, the combination of a rotatable key plug and a rotatable cylinder in operative connection with each other, and having alining keyways, a removable spindle key normally lying in said keyways and movable longitudinally therein for unlocking and operating said key plug and thus said cylinder, a portion of said key pro- `iecting from the lock body for manipulation of said key, and a spring-pressed mechanical device normally in engagement with said spindle key JJor restricting the movement of said key into said rotatable key plug to a distance short of unlocking said key plug and outwardly to a distance allowing of the insertion of a key for the operation of said key plug from that side of the door not controlled by said spindle key, said springpressed device embracing means allowing of the manual disengagement of said device from said spindle key to allow of the full insertion of said key into said key plug for unlocking said plug, said means being adapted to engage with the lock casing to render said rotatable shaft and thereby the locking mechanism inoperative, when required, and a spring adjustable upon said spindle key for withdrawing said key from said key plug a distance to allow the relooking of said key plug and for delivering said key again into engagement with said spring-pressed mechanical device.

45. In a lock, the combination of a rotatable key plug and a rotatable cylinder, a spindle key for unlocking of said key plug and operating said cylinder, and a springpressed mechanical device for restricting the movement of said key in and out of the key plug for the purposes'and in the manner described, said device being further adapted to throw the locking mechanism out of operation when it is not restricting the movement el said key, and comprises a pin movable in a hole in said cylinder, a bearing attached to said pin, a plunger movable longitudinally in said bearing and having a meinber for manipulating said device, and a spring-pressed plunger bearing against said bearing for maintaining said pin in normal position in engagement with said key when desired, and being manually disengageable from said key against the action of said spring-pressed plunger7 and said plunger in the bearing being movable into a bearing in the casing when required for locking said rotatable cylinder against revoluble movement and to render the locking mechanism inoperative from the insideor outside.

46. In a lock, the combination of a rotatable key plug and a rotatable cylinder having alining keyways, and a spindle key operably connecting said key plug With said cylinder and movable longitudinally in said keyways for operating said key plug and said cylinder, means being provided for preventing complete removal of said key from said key plug, and means for restricting the movement of said key into said key plug and a spring-pressed devicefor Withdraiving automatically said key from said plug a distance suiicient to allow of the locking of said key plug and prevent operation of said plug from the side opposite to that controlled by said spindle key except by the proper key.

47. In a lock, theicombination of a rotatable key plug and a rotatable cylinder, and a spindle key for unlocking and operating said key plug and said cylinder from one side of the locking body, and a device for throwing said rotatable cylinder out of operation and thereby preventing lthe operation of said key plug and the locking mechanism.

Signed at New York, in the county of New York and State of N ew York this 8th day of September 1920.

ALEXANDER BLOCK.

IVitnesses:

IRWIN I). RIEsE, L. NEUixrARK.

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