US2018093A - Doorlock - Google Patents

Description

Oct. 22, I935. w. R. SCHLAGE 2,018,093

DOORLOCK Filed Feb. 23, 1932 5 Sheets-Sheet 1 125). Z. 38 v 56 5e IN V EN TOR.

' mam 7621644 4.

Oct. 22, I935. w. R. SCHLA GE 2,018,093

DOORLO'CK Filed Feb. 25, 1952 s Sheets-Sheet 3 INVENTOR. v WM 722! ATTO N Patented Oct. 22, 1935 DOORLOCK Walter R. Schlage, San

to Schlage Lock 00.,

Francisco, Calif., assignor San Francisco, Calif., a

corporation of California Application February 23, 1932, Serial-No. 594,642

17 Claims.

This invention relates to door locks having inner and outer knobs with a key mechanism in the door knob, and particularly a. manually actuated means in the inner knob for dogging the outer knob against rotation and for obstructing the key passage in the outer knob so as to prevent opening of the door by means of the outer knob, except by the insertion of an emergency key.

The object of the present invention is to generally' improve and simplify the construction and operation of locks of the character described; to provide a door lock having inner and outer knobs with a key mechanism in the outer knob; a manually actuated means in the inner knob for dogging the outer knob against rotation, and for obstructing the'key passage in the outer knob so as to prevent opening of the door from the exterior except'by the insertion of an emergency key; to provide means for automatically shifting the dogging and obstructing member to permit the same to assume an intermediate position where the outer knob still remains dogged but where the key mechanism may be actuated by a number of keys to open the door; and further, to provide means actuated by rotation of the inner knob for releasingthe dogging member so as to permit opening of the door from the-exterior by rotation of theouter knob.

The door lock is shown by way of illusration in the accompanying drawings, in which- Fig. 1 is a central vertical longitudinal section through the door lock, showing the dogging means and the key obstructing means in released position so that the latch bolt in the door may be retracted by rotation of either knob.

Fig. 2 is a cross section taken on line 11-11 of Fi 1.

Fig. 3 is a cross section taken on line III-III of Fig. 1.

Fig. 4 is a plan section taken on line IV-IV of Fig. 1.

Fig. 5 is a perspective view of the inner knob spindle.

Fig. 6 is a perspective view of the button in the inner knob and the act dating rod attached there- Fig. 7 is a perspective view partly broken away of the retractor.

Fig. 8 is a perspective view of the pin tumbler lock housing. I

Fig. 9 is a perspective view of the lock indicator. Fig. 10 is a perspective'view of the coupler 'which couples the key rotating core of the pin tumbler lock and the key actuated spindle.

Fig. 11 is a perspective view of the outer knob spindle.

Fig. 12 is a perspective view of spindle.

' Fig. 13 is a perspective view of the dogging 5 member.

Fig. 14 is a section. similar to Fig. 1, said view showing the dogging member in dogging position and the keyway obstructing member in obstructing position. 10

Referring to the drawings in detail and par-, ticularlyFig's. l and 2, A indicates in general a lock housing, in which is mounted a retractor B, and C indicates a housing which carries a latch bolt D, a retractor bar 2 to which the latch bolt 15 is secured and a spring 3' which surrounds the retractor bar and normally maintains the latch bolt in projected position. The lock housing indicated at A will hereinafter be referred to as the latch bolt actuating unit, and the housingB as 20 the latch bolt mechanism.

The housing A, as previously stated, encloses and supports the retractor B and it also forms a support for a pair of spindles E and F. :Each spindle is provided with a knob, one knobbeing 25 indicated at 4 and the other at 5, the knob 4 will hereinafter be referred to as the outer knob and the knob 5 as the inner knob. The knobs are suitably secured with relation to their'respective spindles and when either knob is rotated the cooperating spindle will be rotated. The outer knob spindle is shown in perspective in Fig. 11 and the inner knob spindle is shown in perspective in Fig.5. i

It will be noted by referring to Figs. 5 and 11 that the inner end of each spindle is provided with a rollback member, one rollback member being indicated at 6 and the other at 6a. These rollback members engage the retractor B when the spindles are rotated and impart an endwise movement to the retractor within the housing A, and during such movement also impart an end-' wise movement to the latch bolt D and cause retraction thereof. The retractor B is best shown in Figs. 1 and 7. It consists of spaced side plates I on the outer surfaces of which are formed shoulders 8 and 8a. The side plates are connected at their inner ends by a central cross bar 9 and the outer ends terminate in cross bars in which straddle and engage lugs 10a formed on the inner end of the retractor bar 2. The rollback members formed on the inner ends of the respective spindles will engage the respective shoulders 8 and lie on opposite sides of the retractor when the spindles are rotated, and it is through this enthe key actuated 'pling member is also provided with a cross slot,

' spindle, shown in Figs. 1 and 12, and indicated by the numeral II. This spindle will hereinafter be referred to as the key spindle, as it is rotated by means of a key actuated mechanism only. This. spindle is also provided with a rollback member, such as shown at 6b, and when the spindle II is rotated by the key actuated mechanism the roll-back member 6b. engages the shoulder 8a and as such imparts endwise movement to the retractor and the latch bolt D, hence it is possible to retract the latch bolt either by the key actuated spindle I I orby either of the knob actuated spindles E and F.

The door lock illustrated in the present instance is provided with a key actuated pin tumbler lock G, which is mounted in the outer knob, and it is provided with a push button H, which is mounted in the inner knob. The key actuated pin tumbler mechanism is of standard construction and requires no particular explanation. It

, should suffice to say that it is provided with a rotatable core or cylinder member I2 in which is formed a key passage for .the reception of a key,

i such as shown at I3. When this key is inserted, the

core I2 may be rotated and during such rotation,

movement is transmitted to rotate the key spindle II so as to cause retraction of the latch'bolt D and opening of the door by means of akey. The connection between the core member I2 and the key spindle is best shown in Figs. 1, 8, 9, 10 and 12. The inner end of thecore member projects through the inner end of the housing G and is provided with a cross slot I4. A cross bar I5, see Figs. 9 and 4, is mounted in this slot and this cross bar carries two pins indicated at I6 and I1. Holes are drilled through the core member I2 for the reception of these pins. A spring Ila cooperates with the pin I! to normally maintain 'the cross bar I5 in engagement with a pin I8 herecollar I9, see Fig. 10, this coupling collar being secured on the projecting nd of the core in any suitable manner, for instance by a screw or by being soldered or otherwise secured. The couas shown at 26, and this is provided for the reception of a pair of lugs 2|, see'Fig. 12, formed on the outer end 'of the key spindle II. The coupling member accordingly forms a coupling or connection between the core I2 and the key spindle II, and when the coreis rotated by means of the key, the key spindle will be rotated and the latch bolt D will be retracted to permit opening of the door by means of a key.

The inner knob 5, as previously stated, carries a push button H. This button is securedto an actuating rod generally indicated at K. The rod projects through the inner knob spindle F. It projects through the retractor B as this is slotted, as shown in 7, to permit the actuating rod to pass therethrough, and the rod also extends through the spindles E and II and into the cross slot 20 formed in the coupling I9. In fact, it en- --gages the cross bar I5 and, as such, functions as a means for moving the crossbar, or in other words the key obstructing member I5, into or out of key obstructing position, and it furthermore functions to move a dogging member L into and out of dogging position. The push button, to- 5 gether with the actuating bar K, attached there-' to may assume any oneiof three positions; first, 9. released position such as shown in Fig. 1;scondly, a depressed position where it secures the key obstructing member in obstructing position, 10

and the dogging member in dogging position; and third, it may assume .an intermediate position a where the key obstructing member is released but the dogging member remains dogged. I

The dogging member has two functions: first, 15 that of dogging or securing the outer knob and spindle against rotation; and secondly, that of securing the actuating rod and the push button H against rotation when either the inner or outer knob and cooperating spindles are rotated. The dogging member is best illustrated in Figs. 1 and 13. It consists of a collar generally indicated at 24 which is slidably mounted within thekey spindle. A central opening is formed inthe collar and extends therethrough and this opening is square, as shown at 25, to receive the square portion 25a of the actuating rod. The dogging collar is also provided with an extending lug 26 and this projects into a slot 26a formed in aspindle bearing 21. There are two spindle bearings, the one indicated at 21 and the one indicated at 28. These bearings form a part of. the lock housing A and they form bearings for the inner and outer knob spindles E and F. The lug 26, together with the dogging collar, is movable longitudinally of the slot 26a and the lug may, accordingly, be moved into and out of engagement with a slot 29, see Fig. 11,forn1ed in the inner end of the outer knob spindle E. The dogging collar is dogged against rotation at all times by means 40 of the lug 26 and the outer knob and spindle E are dogged by the lug 26 whenever it enters the slot 29 of the outer knob spindle. j The dogging member is shifted from one position to another by means of actuating rod K, 45 and as previously stated, it serves two main functions, first, that of dogging or locking the outer knob and spindle against rotation, and secondly, that of securing the actuating rod and the push button against rotation when 50' either knob and cooperating spindle is rotated. The dogging collar is always secured against rotation due to the fact that the lug 26 formed thereon projects into the slot 26a. and, as the actuating rod is provided with a square portion 65 25a, the actuating rod and push button will also be secured against rotation.

In view of the fact that the actuating rod and the dogging member may assume three different positions, it is essential that means be 60 provided for securing the actuating rod in the three diiferent positions, as it is normally engaged by a spring 30 which tends to force the dogging member and the actuating rod in the direction of arrow a to assume released posi- 65 I and the actuating rod are secured in their third 7e position when the keyway is obstructed and the outer knob and spindle are dogged, by means of a collar 35, see Fig. 14, which is engaged by a pair of latch arms 36. The latch arms are best shown in Figs..2 and 7. They are carried by the retractor B and they are pivotally mounted as at 31 between the side plates 1 of the retractor. Two sides of the housing A, indicated at 38 see Fig. 2, function as guideways for the retractor and a pair of springs 39 are interposed between the ends of these guideways and the latching arms 36. These springs form two functions, first, that of maintainirig the retractor in the extended position shown in Fig. 2, and secondly, that of exerting pressure on the latch arms 36 to maintain them in engagement with the collar 35.

For the purpose of simplifying the description of the operation of the lock, it will be assumed that the lock is installed in a hotel.

a guest key, a master key, and an emergency key. Each guest occupying a room on a certain floor of a hotel will have his or her own key a single emergency key, which will fit any lock' on that or any other floor.

If' a guest enters his or her room and desires absolute privacy, it is only necessary for the guest to depress the push button H after closing thedoor. Depression of the push button forces the actuating rod K from the fully released position, shown in Fig. 1, to the fully locked position,

' shown in Fig. 14. During depression of the push button the actuating rod, see Fig. 14, is moved in. the direction of arrow 1) and, during this movement, the dogging member is moved from the position shown in Fig. 1 to the position shown in Fig. 14, thereby causing the lug 26 on the dogging member to enter the slot 29 of the outer knob spindle so as to dog and secure the outer knob and spindle against rotation. It will also be 'noted that the inner end l8 of the actuating rod has moved the key obstructing member 15 from the position shown in Fig. 1 to that shown in Fig. 14, thereby obstructing full insertion of guest or master keys and only permittlng opening of the door by means of the emergency key. One thing more has been ac-' complished by the depression of the push button,

to-wit, that of positioning the indicator 16, that is, the end of the indicating pin l6 will in this instance project through the end of the core I2 and thus indicate to the maid on the floor that the guest is in the room and does not wish to be disturbed. In this position of the locking mechanism the maid can not enter nor can any one except the manager, who has possession of the emergency key, and he will not use this key except in emergency cases, for instance sickness, accidents, or otherwise.

If the guest desires to leave the door open so that any one may enterwithout the use of a key, he merely rotates the inner knob 3. The inner knob is always free to rotate and, when rotated, rotates the inner knob spindle F. During such rotation, the roll-back member 8 will engage the shoulder 8 on the side of the retractor and the retractor will be moved inwardly from the position shown in Fig. 2. There area pair of slots 36:: in the latch arms 36. The collar 35 projects through these slots when latched In such installations, three keys will be required, to-wit,

and engaged by the latching arms 36 but when the retractor is moved inwardly in the direction of arrow 0, see Fig. 2, the latching arms 38 will move inwardly with the retractor and the collar 35 will ride out of the slots 36 and will thus be automatically released and, when released, the

dogging member, together with the actuating rod, will move back to the fully released position shown in Fig. 1 due to the tension of the spring 30. The latch 32 will not interfere with the return movement of the dogging member and the actuating bar at this time, as it is secured to the inner knob spindle, and as such has been rotated with the inner knob spindle to a position where it is out of alignment with the notch 33, hence it does not interfere with the return of the dogging member and the actuating.

rod to full released position shown in Fig. 1. Hence, by merely rotating the inner knob the guest completely unlocks the door, that is, releases the key obstructing member IS, the indicator I6, and the dogging member, and as such leaves the outer knob free for rotation to open the door. g

If the guest desires to leave the room and at the same time leave the door in a locked position so that the room may not be entered except by persons in authority, he first opens the door and then depresses the push button H, after which he walks out and merely slams or closes the door. During depression of the push button he fully locks the door, as he moves the actuating rod and dogging member.and the key obstructing member to the position shown in Fig. 14, but when he closes or slams the door he causes depression of the latch bolt D as this will engage the striker plate of the door and as such will be depressed. During this depressing movement,

the lugs Illa on the inner end of the retractor bar 2 enter between the latching arms 36 and thus spreads them apart a sumcient distance to release the collar on the actuating rod. The actuating rod is thus released and would under normal conditions return to complete released position but, inasmuch as the inner .knob and spindle are not rotated, notch 33 inthe actuating rod will align with the latch 32 and as such will be engaged by said latch and will be retained thereby in what is known as intermediate locking position. In'this position the dogging member,

slot 23 of the outer spindle, hence leaving the outer knob and spindle dogged but the key obstructing bar i5 is released and the door may accordingly be opened by the maid in possession of the master key, and it may also be opened by the emergency key, and furthermore, by the guest when returning to the room.

mediate position just described, the indicating pin I6 is retracted and the maid in making the rounds of her floor can accordingly determine or in other words, the lug '26, still engages the .When the actu- 'ating rod and dogging member assume the inter- I g whether the guest is in or out and, as such, can

enterjand clean up the room during the absence,

of the guest. In fact, if the guest is in the-room and desires to have the maid enter to clean or restore order, it is only necessary for the guest to open the door, depress the button, and then again close the door. When he or she performs this operation the actuating bar and dogging member will again assume the intermediate position where the outer knob is dogged against rotation but the indicating pin-is retracted so that the maid will know that she may enter.

From the foregoing it will be noted that a lock is .provided whereby a guest may look himself or herself in the room to insure complete privacy'by merely depressing the button H. Inthis condition of the look no one can enter except the manager in possession or the emergency key, and the maid will not attempt to enter as the indicating pin' is projected and indicates that the guest does not wish to be disturbed; secondly, the guest may leave the door completely unlocked and the outer knob free to rotate so that any onemay enter without a key by merely rotating the inner knob; third, the guest may look himself or herself in the room by causing the actuating bar and dogging mechanism to assume the intermediate position described. in this position preventing entrance of any one except the maid, who is in possession of the master key, or the manager, who is in possession of the emergency key, and at the same time retracting the indicator to .a position which indicates that the maid may enter; fourth, the guest may look the door when leaving the room by merely opening the door, depressing the button H, and then closing the door as he or she leaves the room. During'the closing of the vdoor the latch bolt D is depressed and the dogging member and actuating bar will accordingly be automatically shifted to intermediate position, thereby retracting the indicating pin and the key obstructing bar, and furthermore, leavring the outer knob dogged. so that no one can enter except persons in authority, such as the guest, the maid, etc.

While certain features of the present invention are more or less specifically described, I wish .it understood that various changes may be resorted to within the scope of the appended claims. Similarly, that the materials and finish of the several parts employed may-be such as the manufacturermay decide, or varying conditions or uses may demand.

In Fig. 14, the emergency key is shown at l3a and in dotted lines is shown the maid's key l3. The dotted position of this key merely shows that it can not be fully inserted to operate the look .when the push button is fully depressed, hence making it impossible to open the door with any key except the emergency key.

Having thus described my invention, what I claim and desire to secure by Letters Patent is- '1. Inc. door look, a housing, a latch bolt; a retractor on each side of the housing, a key mechanism on the outer side for retracting the latch bolt, said key mechanism adapted to be actuated by a plurality of keys, means on the inner side for rendering the outer retractor inoperative and simultaneously preventing full insertion in the.

key mechanism of said keys, and means actuated by closing 01' the door in which the lock is mounted for releasing a key obstructing means to permit i'ull insertion of certain keys, said closing the door leaving the outer retractor inoperative.

2. In a door lock, a latch bolt, inner and outer knob actuated means for independently retracting the latch bolt, an outer key actuated means for retracting the latch bolt, means for rendering both the outer knob and the key actuated means inoperative to prevent retraction of the latch bolt, and means whereby depression of the latch bolt will restore the key actuated means for operation but leave' the outer knob inoperative for operation.

3. In a door look, a latch bolt, inner and outer knob actuated means for independently retracting the latch bolt, outer'key actuated means for retracting the latch bolt, means for renderingboth the outer knob and the key actuated means inoperative to prevent retraction oi. the latch bolt, means whereby depression of the latch bolt will restore the key actuated meansior opera-' 5 4. In a door look, a latch bolt, an inner and an outer actuator for independently retracting the latch bolt, outer key actuated means for retracting the latch bolt, a push button, means whereby depression of the push buttonwill render the outer latch bolt actuator and the outer key actu- 1 5 ated means inoperative and means whereby operation of the inner actuatorautomatically releases the push button and renders the outer actuator and the key actuated means operative.

5. In a door look, a latch bolt, an inner and so an outer actuator for independently retracting the latch bolt, outer key actuated means for retracting the latch bolt, a push button, means whereby depression of the push button will render the outer latch bolt actuator and the outer 26 key actuated means inoperative, and -means whereby depression of the latch bolt will restore the key actuated means for operation but leave the outer latch bolt actuator inoperative.

6. In a door lock, a latch bolt, an inner and 80 an outer actuator for independently retracting the latch bolt, outer key actuated means for retracting the latch bolt, 9. push button, means whereby depressionof the push button will ren-,

der' the outer latch bolt actuator and the outer 8 5 key actuated means inoperative, means whereby depression of the latch bolt will restore the key actuated means for operation but leave the outer latch bolt actuator inoperaive, and means whereby retraction of the latch bolt by the inner latch 40 bolt actuator'will restore the outer latch bolt actuator for operation.

7. In a tumbler lock housing, a cylinder plug rotatable therein, said cylinder plug having a keyway for the reception of a key, a key shut-out member carried by the cylinder plug and rotatable therewith, said key shut-out member being attached to the cylinder plug to prevent removal therefrom, and means operable independently of the cylinder plug for selectively positioning the key shut-out member either to shut out the key or to permit full insertion of the key.

8. In a tumbler lock housing, a cylinder plug rotatable therein, said cylinder plug having a' keyway for the reception of a key, a key shut-out taneously moving the lock indicator to visibly indicate the position of the key shut-out member.

9. In a door look, a latch bolt, inner and outer knob actuated means for independently retracting the latch bolt, an outer key actuated means for retracting the latch bolt, means for rendering both the outer knob and the key actuated means inoperative to prevent retraction of the latch bolt, and manually actuated means for restoring the key actuated means for operation but leaving the outer knob inoperative for operation. 7

10. In a door look, a latch bolt, an inner and an outer actuator for independently retracting the latch bolt, kcyactuated means for retracting the latch bolt, a dogging member for dogging the outer actuator and the key actuated means against operation, means for securing the'dogging member in one position where it renders the outer actuator and the key actuated means inoperative, means for moving the dogging member to a second position where the key actuated means is restored to operation but leaving the outer actuator inoperative, and means for moving the dogging member to a third and normal position where both the outer actuator and the key actuated means are rendered operative.

11. In a door look, a, latch bolt, an outer actuator for retracting the latch bolt, key actuated means for retracting the latch bolt, means operative from the inner end of the lock for rendering the outer actuator and the key actuating means inoperative, means whereby depression of the latch bolt will restore the key actuated means for operation but leave the outer actuator inoperative, and means operative from the inner end of the lock for restoring the outer actuator for operation.

12. In a door look, a latch bolt, an outer actuator for retracting the latch bolt, key actuated means for retracting the latch bolt, a push rod operable from the inner side of the lock, a dogging member actuated by the push rod for dogging the outer actuator against operation, said push rod when operated simultaneously rendering the key actuated means inoperative, latch means for securing the push rod in a position where it dogs the outer latch actuator and renders the key actuated means inoperative, means for releasing said latch to cause the push rod to assume a second position where the outer actuator stillremains dogged but the key actuated means is rendered operative, a second latch for securing the push rod in said second position, and means for releasing 'the second latch to cause the push rod to assume a third and normal position where the outer actuator is undogged and the key actuated means is operative.

13. In a door lock, a latch 'bolt, an inner and an outer-actuator for independently retracting the latch bolt, key actuated means for retracting the latch bolt, apush rod operable from the inner side of the look, a dogging member actuated by the push rod for dogging the outer actuator against operation, said push rod when operated simultaneously rendering the key actuated means key actuated means inoperative, means operat- 6 ed by depression ofthe latch bolt for releasing said latch to cause the push rod to assume a second position where the outer actuator still remains dogged but the key actuated means is rendered inoperative, a second latch engageable with 10 the push rod for securing the rod in said second position, and means operable by rotation of the inner actuator for releasing the second latch to cause the push rod to assume a third and normal position where the outer actuator is undogged l5 and the key actuated means is operative.

14. In a look, a latch bolt, a retractor on each side of the door whereby the latch bolt may be retracted, key operated mechanism on the outer side of the door whereby the latch bolt may be 20 retracted-means on the inner side of the door for rendering the outer retractor andkey mechanism inoperative, and means actuated by closing of the door for rendering the key mechanism operative but leaving the outer retractor'inoperative.

15. In a look, a latch bolt, a retractor on each side of the door whereby the latch bolt may be retracted, key operated mechanism on the outer side of the door whereby the latch bolt may be retracted, means on the inner side of the door for rendering the outer retractor and key mechanism inoperative, means actuated byclosing of the door for rendering the key mechanism operative but leaving the outer retractor inoperative, and means actuated by operation of the inner retractor for rendering the outer retractor operative.

16. In a cylinder lock, the combination with a rotatable key plug having a key slot, of akey shutout device slidably mounted in the inner end of 40 the key plug and adapted to permit or prevent rotation of the key plug by a regular key, said key shut-out device being secured against separation from the key plug.

17. In a cylinder lock, the combination with a rotatable key plug having a key slot formed therein, of a key shut-out device slidably mounted within the key plug and adapted to permit or prevent full insertion of a regular key, said key shutout device being secured against separation from the key plug.

WALTER R. SCHLAGE.

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