US1796727A - Doorlock - Google Patents

Description

Max-c1117, 1.931. w, R. scHLAGE DOORLOCK Filed 0G12. 7I 1924 Patented Mar. 17, 1931 UNITED STATES PATENT OFI-ice WALTER R. SCHLAGE, OF SAN FRANCISCO, CALIFORNIA, `ASSIGNOIEL T0 THE SCHLAGE COMPANY, OF SAN FRANCISCO, CALIFORNIA, A CORPORATION 0F CALIFORNIA DOORLOCK Application filed October 7, 1924. Serial No. 742,198.

This invention relatesto door locks, and particularly to improvements on the .structure shown in my copending application entitled Door locks, tiled August 8, 1923, Serial No. 656,335.

The object ofthe present invention is to generally improve and simplify the eonstruction and operation of locks of the character described; to provide a lock embodying an inner and an outer knob, with means for locking the outer knob against rotation, said means comprising a lmtton-actuated mechanism carried' by the inner knob; and further, to provide a lock of thischaracter in which the outer knob may be released by `turning movement of the inner knob in one instance, and by a key-actuated mechanism in another instance;

One form which my invention may assume Vis exemplified in the following description and illustrated in the accompanying drawings, i'r1whichy Fig. 1 is a central longitudinal section of the lock.

Fig. 2 is a similar section, taken at` right angles thereto or on line 2--2 of Fig. 5.

Fig. 3 is a cross-section on line 3--3 of Fig.

FFig. 4 is a cross-section on line 4 4 of l v y Flg. 1.

Referring to the drawingsin detail, and particularly to Fig. 1, A indicates ingeneral a lock housing which is cylindrical in cross-section and which encloses a latchactuating mechanism. B indicates a housing which is also cylindrical in cross-section and which carries a latch C and an actuating mechanism. The portion of the lock indicated at A will hereinafter be referred to as the latch-actuating mechanism, and the portion of the lock carried by the housing B will be known as the latching mechanism.

The latch-actuating unit, besides supporting and housing the latch-actuating mechanism, also forms asupport `for a pair of spindles D and E. Each spindle is provided with a knob, one knob being indicated at 2 and the other at 3. The knob 2 will and it will also be later referred to.

` l. Figv 5 is a crosssection 'online 5 5 ofthe knob 2 and the spindle D when locked.

Other means are employed for releasing the spindle D and the knob 2 when locked. This mechanism is actuated by tui-nin movement of the knob 3 and the spindle E?, In fact the invention involved in the present instance involves the following features; a lock having an inner and an outer knob; means for locking the outer knob against rotation; means actuated by turning movement of the inner knob for releasing the outer knob, and a key-actuated mechanism operable independent thereof and also serving the function of releasing the outer knob.

The means for locking the spindle D and the outer knob against rotation embodies the push button 5 and the mechanism actuated thereby. This push button is carried by the inner knob. The key-actuated mechanism which releases the outer knob 2 is mounted in the outer knob, and the means actuated by turning movement of the inner knob for releasing the buter knob is carried within-the latch-actuating housing A. All of these features will be described in detail, but before roce'eding with this description, vafurther lock in general.l

.f The spindles D and' E are-journalled in bearing extensions 8 formed on an escutcheon plate 9 secured on each side of the door generally indicated at The spindles pro- ]ect to a central point within the lock housing A. A slight-spacing is, however, left between the spindles as indicated at 10, so that-there is no danger of interlocking, and furthermore, to permit free lactuation of each spindle independent of the other. Both escription will be given of the' 'lhese hook-shaped members interlock with spindles are split or have key-ways formed therein as indicated at 11, the key-wa s being provided for two purposes, first, t at of locking the knobs against rotation about the spindles, and secondly, that of locking one of the spindles and knobs against rotation,

to-wit, the outer spindle and knob indicated at 2. l y

The spindles .are secured against endwise movement to prevent vthem from being pulled out of the lock, but as this feature is covered in my copending application, and

.in other pending applications, it is thought in any suitable manner is a retractor guide 13, and slidably mounted within the guide and guided thereby is a retractor carriage 14. The inner end of each spindle terminates in a pair of shoulders such as indicated at 16 and 16a (see Fig. 5). These shoulders engage the end of the retractor carriage and limit its movement in one direction; in fact the retractor carriage is held in engagement with these shoulders by means of a spring 17. -Turning movement of either spindle through means of the knobs forces one shoulder 16 or another into' engagement with the end of the retractor carriage, and it is thus moved in the direction of arrow a.

(See Fig. 5.)

The outer end of the carriage is provided with a pair of hook-shaped members '18.

a T-shaped head 19, which is formed on a rod This rod extends through the lat-eh houslng B and in fact carries the latch C, as

the latch is secured on the outer end thereof.A

The latch, together with the rod 20, is norlnally held in a projected position, such as shown in Figs. 1 and 5, by means of an inner helical spring 21, but the latch is retracted against the tension oty this spring when the retractor carriage is moved in the direction of arrow ai. It is, however, automatically projected when either spindle is released, as release of the .spindle permits it to rotate back to normal position, due to the action of the springs 17 and 21.

The retractor carriage 14 cooperates with the push button 5 and the mechanism actuated thereby to lock the spindle D and the outer knob against rotation.l This is accomplished as follows: Secured on the inner end of the push button 5 is a flatrod or bar 22. Mounted on the inner end thereof are a locking plate 23vand a catch 24. The button 5' is normally held in a projected position, such as shown 1n Fig. 1, by Ameans of a plunger 2 5 and a spring 26, which engages the inner end This is accomplished as fol-l of the bar 22, but manual depression of the button 5 will force the bar 22 and the locking plate 23 inwardly against the tension of the spring 26 and the bar 22 and plate23 will here be locked by means of the catch 24; that is, the catch passes behind a shoulder 24a formed on the retractor carriage and the push button bar 22, together with the plate 23, vis thus locked against return movement. It will further be noted that the plate 23 will be projected intothe keyway slot 11 of the spindle D, and the spindle D, together with the outer knob 2 carried thereby, is thus locked against rotation. In other words the door cannot bc opened from the outside by rotation of the knob 2, as it is locked against rotation .and it will here be stated that it cannot be rot-ated until released.

Two releasing mecl'lanisms are employed,

to-wit, the mechanism actuated byl rotation of the .inner knob 3, and the key-actuated mechanism generally indicated at 7. Before proceeding with a detailed description of the operation of the releasing mecha- -possible for an outsider to enter through the door as the exterior knob cannot be rotated to release the latch. It is also possiblel to lock the door when leaving ,the room. This is accomplished by depressing the button before leaving the room and then merely slamming the door closed.

In the lockshown in my copending application referred to, slamming of the door after depression of the button would cause a release of the locking mechanism, but this is not the case with the mechanism shown in the present application. If the button 5 is depressed or pushed inwardly before .leaving the door and the door is slammed as the room is left, latch C will naturally become depressed; that is, it will move inwardly against the spring 2l and will compress the same, and it will again move outwardly when it reaches the opening in the keeper plate. In otherfwords the latch can move inwardly without releasing the locking mechanism, as it does not transmit any movement to the retractor carriage. The latch. bar 20 and the T-hea'd 19 can move inwardly to assume the dotted line position shown in Fig. 5 without imparting any movement to the retractor carriage and it is forthis reason .that the locking mechthe plunger 25.

the tumblers 31 an slam it closed when leaving the room.'

The means employed fooi` unlocking the door when returning to the room is the keyactuated mechanism indicated at 7, and the means employed for releasing the locking mechanism when inside of the room is the inner knob. This releasing action and mechanism will nowbe described.

The mechanism actuated by the inner knob 3 is nothing more or less than the retractor carriage itself. Rotation of knob 3 will rotate the spindle E. This has a pair' of shoulders formed on its inner end, as shown at 16 and 16a (see Fig. 5) and-either one shoulder or the other willduring rotation of the knob 3 and spindle E causel movement of the 'retractor carriage in the direction of arrow a. Shoulder 24a formed on the retractor carriage will .thus move outwardly or away from the catch 24, and the moment this is released' bai' 22, locking plate 23 and button 5 are moved outwardly in the direction of arrow b by means of the action of the spring 26 and This return movement of the button-actuated mechanism pulls the plate 23 out of the slot or key-Way 11 of the spindle D and the spindle, together with the knob 2 carried thereby, is thus released so that they will be free' to rotate.

From the foregoing, it will be seen that the spindle D, together with the knob 2, is locked by means of ydepression of the button 5, and it will also be seen that they may be released by means of rotation of the spindle E and theinner knob 3, as such rot-ation.

imparts movement to the retractor carriage and thereby releases the button-actuated mechanism so that it may return and interT lock the spindle D and outer knob. It has also been stated that the spindle D and the outer knob carried thereby may be released from the exterior by means of the key-actuated mechanism indicated at 7. To illus-4 trate this part of the mechanism,- it will again be assumed that the s pmdle E and outer knob 2 havel been locked by depressionof the push button 5. A erson desiring to enter from the exterior will, therefor-@only -pair of rocking or pivotally mounted tumblers such as indicated at 31 and 32. vThese tumblers will assume a parallel lposition when the key is completely 4inserted and when this parallel position is assumed, itis possible to rotate the key housing, which consists of a pair of lates 33, between which 32 are mounted and a 'housing;34 which carries the spring 26 and 'enga e the end of the retractor carriage the plunger 25. This housing also carries a projecting lug 35. This lug is best shown in Figs. 1 and 5. It 1s arcuate shaped as shown in F1g.`5 and hes Withln the shoulders 16 and 16a formed on one of the spinl dles. By inserting the key so that the` tumblers will assume a horizontal position, it was stated that the lock housing is free to rotate. rSuch rotation causesthe lng 35 t;

l` and 1t thus im arts a movement thereto the direction o arrow a in a manner similar to rotation of the inner spindle E. Such movement of the carriage releases the catch 24 and the push button, together with the bar 22 and the locking plate 23, is tlms automatically retracted, thereby leaving the spindle D, together with the outer knob,`free to rotate.

From the foregoing it'can be seen that the spindle D and the outer knob are not only released by means of the inner knob, but also by the key-actuated mechanism carried by the outer knob. The inner knob actuates the retractor carriageV to release the catch 24 and so does the key-actuated mechanism actuate the retractor carriage to release the catch 24. No detailed description has been rendered of the key-actuated mech- `anism as this forms the subject matter ot a copending application entitled Door lock, filed May 9, 1923, Serial No. 637,638.

While a more or less specific mechanism is here disclosed, I wish it understood that. the matter which I desireV to cover in the present application is broadly a door lock embody ing an inner and an outer knob, means for locking the outer knob agamst rotation, means actuated by the inner knobfor releasing the outer knob, and key-actuated means also adapted to release said outer knob.

Having thus described my invention, what I claim and desire to secure by Letters Patent is- 1. In a lock of the character described, an inner and an outer knob,'a lock housing in which they are journalled, means for locking the outer knob tov the housing to secure the knob against rotation, key-actuated means for releasing said locking means, and means actuated by turning movement ot the inner knob to release said locking means.

2. In a lock of the character described, a lock housing, a pair of knobs jonrnalled therein, means for locking one knob to the lock housing, and against rotation with relation to the housing and leaving the other knob free to rotate, and key-actuated means for releasing the locked knob.

3. In a lock of the character described, a lock housing, a pair of knobs journalled therein, means for locking one knob to the lock housing, and against rotation with relation to the housing, and leaving the other knob free to rotate, and key-actuated means rco 'in the locked knob for releasing the locked knob.

, and against rotation With relation -to the housing, and key-actuated means for `releasing said button and the locking means actuated thereby.

5. In a lock of the character described, a lock housing, a pair of knobs .journalled therein, a push button mounted in one knob,

means actuatedA thereby for locking the opposite knob to the lock housing and against rotation with relation to the housing, a keyactuated mechanism carried by said other knob, and means actuated by s aid key mechanism for releasing said push button and the locking mechanism actuated thereby. f i y 6. In a lock of the character described, ya lock housing, an inner and an outer knob journalled therein, a push button mounted in the inner knob, a. loc-king member actuated by the push button for locking the outer knob to the lock housing and against rotation 'With relation to the housing, means actuated by rotation of the inner knob for releasing said .locking means to permit rotation of the outer knob, a key-actuated mechanisml in the outer'knob, and means actuated thereby for releasing said locking mechanism to permit rotation of the outer knob. 7

7. A lock of the character described comprising a housing, an outer and an inner spindle member Journalled therein, a locking member longitudinally and manually movable in one direction within the inner spindle and adapted to engage the outer spindle and the lock housing to secure the outer spindle against rotation, and keyactuated means inthe outer spindle to release said locking member and the outer spindle.

8. In a lock of the character described, a

housing, an outer and al1 inner spindle member journalled therein, a bar slidably mounted in the inner spindle, a locking plate on said bar, said bar and locking plate being movable in unison,a push button secured to the bar, said push button permitting manual movement of the bar Aandthe locking plate, interlocking means carried by actuated means carried by the outer spindle and also adapted to release the locking plate.

9. In a lock of the character descrlbed, a

lock housing, an inner and an outer spindle `member Journalled therein, a retractor carposition, a catch' on the bar adapted to be engaged by the retracting carriage and adapted to secure the locking plate 1n interflocked position, means actuated by turning movement of the inner spindle -for imparting movement to the reti-acting carriage so as to release the catch and thereby thelocking plate, and a key-actuated mechanism in the outer knob whereby'movement may be impartedto `the retractor` carriage to release the catch and the locking plate.

' 10. In a lock ot' the character described, a vlock housing, an inner and an outer spindle member journalled therein, a retractor carriage slidably mounted in the lock housing, a bar longitudinally movable in the inner spindle, a locking plate thereon and adapted to interlock with the lockhousing and the outer spindle to secure the outer spindle against rotation, a push button on the bar to move the locking plate into interlocking position,y a catch on the bar adapted to be engaged by the retracting carriage and adapted to secure the locking plate in interlocking position, means for imparting movement to the retractor carriage to release the catch and the locking plate, key-actuated means carried by the outer spindle also adapted to impart movement to the retractor carriage to release the catch and the locking plate.

11. .In a lock of the character described, a.. reciprocableV latch, a retractor engaging the latch, an inner and an outer spindle engaging said retractor and adapted to be rotated to retract the latch, the engagement between the retractor and the latch being `such that the latch mayube retracted Without imparting movement to the retractor, means for locking the outer spindle, key. actuated means 'for releasing said locking means,

and means actuated by movement of the inner spindle to release said locking means.

WALTER R. SCHLAGE.

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