US932364A - Hotel-door lock. - Google Patents

Description

A. ARI-INS.

HOTEL DOOR LOCK. APPLIOATION FILED JULY 15, 1908. 932,364.- Patented Au 24. 1909.

3 SHBBTSSHEET 1.

Q Fl 103 00 A. ARENS.

HOTEL DOOR LOOK. APPLIOATION FILED JULY 15, 1908 3 SHEETS-SHEET 2.

Patented Aug. 24. 1909.

A. ARENS.

HOTEL DOOR LOCK.

APPLICATION FILED JULY 15, 1908.

982,364. l Patented Aug. 24. 1909.

3 SHEETS-SHEET 3.

14 Vi F3; .11. I

w 1 J -1w 1/ QQi bmwmm: Q I'I'QCH-IOZ UNITED STATES PATENT OFFICE.

AUGUST ABENS, OF HARTFORD, CONNECTICUT, ASSIGNOR TO P. 8: F. CORBIN, OF NEW BRITAIN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

HOTEL-DOOR LOCK.

Specification of Letters Patent; I Patented Aug. 24, 1909. Application filed July 15, 19px. Serial No.

To all whom it may concern:

Be it known that 1, AUGUST ARENs, a citizen of the United States, residing at New- Britain, county of Hartford, State of Connecticut, have invented certain new 'and useful Improvements. in Hotel-Door Locks, of which the following is a full, clear, and exact description.

I My invention relates to im rovements in look mechanism, and particu arly to a lock for use on hotel doors, and the object thereof isto provide a mechanism of this character wherein the operation of the lock may be limited or extended as the exigencies of-use may require. For example, it is often desirable that access to a room be limited exclusively tothe tenant thereof in the case where a room is used for-the display of vention, any one of ve keys may be used,

towit, the pass key or guest key, ordinarily bitted so as to fit only one look; second, a master key or servants key, bitted to fit severalv locks, for example, all of the locks on one floor; third, a grand-master key for the housekeeper, by which she, can lock or ,unlock any of the locks on the several floors fourth, a display key, by which access to the room may be limited to the tenant, or occupant, 'and also the proprietor; fifth, an emergency key, which is held by the proprietor, and which is capable of operating the lock when lockedby any of the other keys, in-

cludin the display key.

Thedock mechanism is so arranged that it may beoperated interchangeably by looking and unlocking by any one of the first three keys mentioned, namely, the guest key, master key and grand-master key. When locked by the displa or emer ency key, however, the lock may e release only by the display or emergency keys, the same keys thus confiningaccess to a room occupied for display purposes, to the occupant, and to the proprietor in case of emergency.

. The invention further provides that when" the locking mechanism removed emergency and display keys.

the mechanism is locked from the inside, it

may be released from the outside only the emergency key. I

A further o ject of the invention is to pro videmeans whereby the knob of the door will be held against rotation when the'door is locked from the inside, in order to indicate to one attempting to enter the room that the room is already occupied.

With these and other objects in view, the invention consists in the constructionand arrangement of parts illustrated in the accompanying drawings,- in which Figurel represents the lock mechanism with the cap or cover plate removed'from the case. Fig: 2 is an end view of the lock, looking toward the front plate. Fig. 3 is a view similar to Fig. 1, with certain parts of for clearer illustration. Fig. 4 is a fragmentary view of'the upper or main locking bolt, showing the position of the tumblers when the bolt is extended by certain keys. Fig. 5 is.a view similar to Fig. 4, showing theepositio'n of the tumblers when operated by. certain other keys. Fig. 6 is a view with the lock case in section, disclosing the rear ends of the tumblers and certain Fig. 7 is a view of removed from the lock. Figs. 8, '9 and 10 are views respectively of the ward ends of the guest, master and ,grand-master-keys. Figs. 11 and 12 are similar views of the connecting mechanism.

In the embodiment of my invention herein selected for illustration, the lock comprises a case 1 for containing the lock mechanism proper, which isprovided with the usual front plate 2 and a cap or cover plate 2 (Fig.

6) which, when the lock is secured in position within the door, is located tdward the outside. W'ithin the-case a main locking bolt 3 is slidably mounted in suitable guides, upon which bolt the several tumblers are pivoted on a stud 4, which tumblers are adapted to be held in looking or unlocking position'by means of springs 5 in. the usual manner, certain of the tumblers being provided with the usual gates 6, which cooperatelwith the racking stump 7 mountedfupon'the bolt 3. The tumblers for this "bolt may be of any usual construction, with the exce or outside tumbler 8, whip I term the isplay and emergency tumbler, and which 1 serves to prevent retraction of the bolt by the emergency tumbler tion of the up er any but the emergency and display keys when the bolt has been projected by either of said keys. To this end, the emergency tumbler 8 is provided at the urfder side of its lower edge wit-h a milled ledges (Fig. 7), whereby either the emergency or display keys may travel beneath the sweep of the tumbler without changing its position. At the same time the remaining tumblers are raised to release the racking stump 7 from their gates 6 upon the projection of the bolt, after which the tumblers again drop beh nd the racking stump and hold'it in looking po sition, as illustrated in Fig. 4. v

Referring to Figs. 11 and 12, showing the wards of the emergency and display keys respectively, it will be seen that the w'ardQ of e emergency key is narrow, to permit it to take beneath the sweep of the emergency tumbler and within the milled ledge 8 described.v The ward 10 of the dis lav key also is provided with a recess 11, w ich permits this ward to take beneath the swee of the emergency tumbler and within its mi led l ledge. By this arrangement the bolt 3 (Fig.

tumbler, furthermore, is provided with'a' tongue 15, having a straight up er edge and a beveled lower edge, the latter icing for the purpose hereinafter to be described. When' the emergency umbler is in the position indicated in Fig. 4, with the bolt 3 extended, the tongue 15 liesin range of a milled recess 7 in the end of racking stump 7, and should attempt now be made to retract the bolt by means of the guest, master or grand-master key, it will be seen that the contact of the wards of these keys against the sweep of said tumbler will serve to throw'the tongue 15 against the narrowed end of the rackjng stump 7, whereby further movement of the keys to retract the bolt would be prevented,

and hence the retraction of said bolt will'be confined to the emergency and display keys.

Referring now to Fig. 5, the bolt 3 is here shown ashaving been extended by means of either the guest, master or grand-master keys, in which operation the wards 12, 13 and ,14, respectively, of these keys, have taken against the sweep of the emergency tumbler nd have so raised the tumbler that the beveo eled forward side 7 of the racking stump 7 in the forward movement of the bolt has engaged the lower beveled face of the tongue 15 of the emergency tumbler, so that said tongue lis above or over said racking stum 65 when the bolt 3 is in extended position. t

outside of the door, the key-hole for this bolt being located in the ea or cover plate, which is u on the outside of t eoase, an apertureX in t e case being provided to receive the key stump. I

A second bolt 16 adapted for direct operation only b a key inserted from the Inner side of the oor through a key-hole 17 in the case, is also provided, which bolt is operatively connected with the first or main bolt 3 by means of a lever 18 pivotedat 19 within the case, the ends of the lever takin within the recesses-20 and 21 in the first an second bolts respectively. The recesses in the bolts are so arranged (as shown in Fig. 3) that projection of the upper bolt will serve to retract the lower bolt, 1f the latter has been previously projected, and, conversely, the projection of the lower bolt will serve to retract the upper bolt if the latter has been reviously projected. By this means the cor may be unlocked from either side by the movement of the proper keys, irrespective of which of the bolts is i i-projected or locking position, as will hereinafter appear. The sec- 0nd bolt 16 is provided with a tumbler 22, pivoted at the point 23 on said bolt and provided withthe usual operating spring 24 to hold the same in looking or unlocking posi tion with reference to the racking stump 25.

In order that the occupant of the room may not be disturbed, except in case of emergency, when the door is locked from the inside, I provide means whereby the bolts may not be operated from the outside by any but the emergency key. To this end, the lower or secondlocking bolt is provided with an upwardly projecting lug 26, which, when the bolt is projected, lies in the path of the wards of any key inserted from the outside. An inspection of the construction of the wards of the keys shown in Figs. 8 to 12 inclusive, will indicate that the wards ofeach of these keys (with the exception of the emergency key) are of such thickness that they en age the bottom plate of the case and lie close y adjacent to the cap plate when in operative osition in the outer key-hole. It

will be evident, therefore, that if the lug 26 u on the second bolt 16 lies in the path of t is key-hole, it will be impossible to insert Buch'keys sufficiently to clear the cap or cover plate, hence operation of the bolts will be prevented. In case, however, it Is deslr- 130 ceases" able or necessary to unlock the door from the. outside when looked upon the inside, the same may be accomplished by the use of the emergency key, which, as shown in Fig-11,

.has its ward 27 cut away sufficiently to permit the wards to be completely inserted within thelock case from t 1e outside, notwithstanding the fact that the lug 26 of the second bolt may, lie in line with the outside key-hole; The inner or secondbolt may then be retracted through the intervention of the pivote'd= lever 18, by'iirst rejecting the main orwupper bolt 3, and the attermay then be,

retracted in the usual manner by the same key; To permit theretraction of thelower j .bolt throughthe intervention of'theiever 18, it is-necessarythat means'be rovided to free the racking stump of sai bolt 'froni the' gate 'of the -tumbler 22. To this endg-fthe sweep 27 "of said. tumbler. is provided .recess 28, within which the Ward 'ofakey-in fscrted in the inner key-hole will rest WhB A the inner b'olt isin projected position itbein'g understood that. it is 1m olsslble'to reuji'ov'efa key from the inner keyole when the'g inner bolt is projected. The wardlof 'the' key fin this position also takes against a sh0ulder29, upon said bolt 16, so that-immediately'upon. retractive movement ofsaid lowerboltthe tumbler: 2 2 --thereof willv immediately be raised by rotation of the 'key ward against the sweep of the tumbler within the recess.

- 28, whereby the tumbler will be immediately released from the racking stump '25 and the bolt be free for complete retraction.

In order to permit of the unlocking of th door from the inner side, shouldthe upper or outside bolt be inadvertently projected when the room is occupied, I provide connecting mechanism'betw'een the tumbler 22 of the lower o r-inner bolt-and the tumblers of the bolt, the tumblers of the upperwbolt, whereby when said tumbler of the lower bolt is lifted for retraction of the upper bolt-will be simultaneously freed from t e racking stump 7. i To this end, I provide the connecting plate31 having a not-ch32, which takes over a projection 33 upon the rear end of the tumble'r 22 of the lower-bolt. The said connecting plate 31 is also provided at its upper end with suitable shoulders 34 and 35, which take against projections 36 and 37 respectively upon the rear ends of the tumblers of the u per bolt.

A, urthcr desirable feature of, the invenlJlOIl'OOItSlStS in the means whereby the knob spindlefan'd knob'smay be held against rotation. when the door is locked from the inside to indicate that the room is occupiedj To this end, I provide a rocking lever 38 pivoted on the case at 39 (Figs. 1 and 3) having a slot 40 in its-upper end adapted to receive a projection 41 on the lower side of the lower bolt 16. ville-opposite arm of said lever is adapted to engage a shouldered lug 42 carried by the roll-baekyoke 43which operates the latch 4 L Said yoke 43 isadapted-to be operatedby the roll-back 45 which takes against lugs 46 upon the inner end of said yoke, one of whic lugs engages the headed end 47 of the latch bar 48.- From an inspection of Fi s. 1 and 3, it will becbvious that when the ower bolt is projected, the lower arm of lever 38 will engage behind the lug 42 of the roll-backyoke 43, therebypreventing rotation ofsaid roll-back '45' -and consequently of the knob spindle and knobs.

While} have herein described theparti'c'u- I lar construction and arrangementoi parts; whereby theobjects of my inventlo'n may. be.

attained,-it is obvious that the same may be Ivaried indetail without departing from the;

. ofa boltnonnally 0 table in either direction geney key and display key, and a' ihember actuated byfl-allhut the display and emerenc keys'ito prevent the unlocking of said byahjbfga serieeo keys, including an emerolt y any other of said. keys when locked by either the emergency or display key, a second bolt operableffrdm the inside, and means to prevent unlocking of-the door from the out-' side by any but the emergency'key when said second bolt is locked.

3. In a locking mechanism, the'combinas tion of a bolt normally 0 erable in either direction from the outside y any of a series of keys, including an emergency and a display key, a second bolt operable in either direction from the inside by any of said. keys, connecting means between said bolts whereby either bolt may be retracted by the projection of the other, and a member actuated byallbut the display and emergency keys to prevent unlocking of said first boltby anyother of said keys when locked by either the emergency or display key, and means for reventing retractionof said second bolt rorn the outside by any but the emergency key. I

4. In a locking mechanism, the combination of a bolt operable in either direction from the outside by any of a series of keys, including an emergency and a display key, a

second bolt operablein either direction from the inside by any of sald keys, connecting means between said bolts whereby either bolt,may be retracted by the pro'ection of the other, a member actuated by a l but the display and emergency keys to prevent op.- eration of said first bolt by any .but said emergency or display key when projected by either of said keys, and a lug on said second bolt adapted to prevent the operative insertion of any but the emergency key from the outside when the second bolt is projected whereby operation of the first olt and through it retraction of the second bolt from rection by any of sai the outside is limited to said emergency key.

5. In a locking mechanism, the combination ofa bolt normally operable in either dimotion from the outside i display key, and means to limit the operation of the first bolt to the emergency key when the second bolt is projected.

6. In a locking mechanism, the combination of a bolt operable in either direction from the outside by any of a series of keys, including an emergency and a display key, a second bolt operable in either'direction from the inside by any of said keys, connecting means between said bolts whereby either bolt may be retracted by the projection of the other a memberactuated by all but the display and emergenc keys to prevent unloc ing of said first bo t by any other of said keys when locked by either the display or the emergency key, and means to prevent the operative insertion of any but theemergency key from the outside when the second bolt is projected whereby operation of the first bolt and through it retraction ofthe second bolt {(romthe outside is limited to said emergency 7. In a lock mechanism, the combination of a bolt adapted to be actuated by any of a series of keys, including a display key and an emergency key, of a tumbler adapted, when the bolt is thrown to its locked position by the display key, to prevent the operation of any other key but the display and emergency keys.

8. In a lock mechanism, the combination of a bolt, tumbler mechanism adapted to be actuated by any one of a series of keys, including adisplay key and an emergency key, and a'mcmher operable, when the tumbler mechanism and bolt have been actuated by the display key, to prevent the operation of the tumbler mechanism and bolt by any other but the display and emergency keys.

9. In a lock mechanism, the combination of a bolt, a main tumbler mechanism adapted to be a'ctuatedby any one of a series of keys, including a display key and an emergency key, a tumbler operable when the maintumbler mechanism and bolt have been actuated by the display key or emergency key to prevent the retraction of the bolt by any but the dis lay and emergency keys.

10. n a lock mechanism, the combination of a bolt and aseries of main tumblers adaptedto be actuated by a plurality of keys, including a display key and an emergency key, of a tumbler actuated by all of the keys except the dis lay key and emergency key, and a apted, Wien the bolt is thrown to the locked position by the display key or emergency key, to prevent the unlocking of the bolt by any other'but the display and emergency keys.

11. In a lock mechanism, the combination of a bolt normally operable in either direction by any of a series of keys including an emergency key and a dis lay key, a racking stump on said bolt, tum ler mechanism cooperating with said stump and including a tumbler having means adapted to be positioned in certain relation to said racking stump by said emergency and display keys to prevent unlocking of the bolt by any other of said ke'ys.

12. In a lock mechanism, the combination of a bolt normally operable in either direction by any of a series of keys including an emergency and a display key, a racking stump on said bolt, tumbler mechanism cooperating with saidstump and including a tumbler having a tongue adapted to be positioned below said stump when operated by said emergency or display keys to prevent unlocking of said bolt by the others of said keys.

13. In a locking mechanism, the combination of a bolt normally operable in eitherdirection by any of a series of keys including an emergency and a display key, a racking stump, tumbler mechanism cooperating therewith, including a tumbler adapted to be so posi tioned by said cmcrgen cy or display keys that the bolt may be unlocked only by the emergency or display keys.

14. In a locking mechanism, the combination of a bolt opcrablcin either direction from the outside, a second bolt operable in either direction from the inside, connecting means between said bolts whereby either of said bolts may be retracted by the projection of the other, a tumbler for the second bolt, and means on said tumbler adapted to cooperate with the ward of a key inserted from the inside to free said tumbler from its racking stump when said second bolt is retracted through said connecting means by operation of the first bolt. v 1

15. In a locking mechanism, the combination of a bolt" operable in either direction' from the outside, a second bolt operable in either direction from the inside, connecting means between said bolts whereby either of said bolts may be retracted by the projection of the other, a tumbler for the second bolt and a cam shoulder on said tumbler, and a ing said latch, a roll-back for operating sa'i shoulder on said second-bolt adapted-t0 c0- yoke, a shoulder on said yoke, and meansoperate with the ward of a key inserted from operated by said bolt and cooperating with the inside to free said tumbler from its racksaidshoulder, to revent rotation of the roll- 5 ing stump when said second bolt is retracted back when the b0 t is in looking position.

through said connecting means by operation AUGUST ARENS. of the first bolt. Witnesses:

16. In a look mechanism, the combination G. ERNEST Roo'r,

of a bolt. a latch, a roll-back yoke for operat- WM. V. COLLINS.

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