US1018534A - Communicating-door lock. - Google Patents

Description

H. G. VOIGHT & N. B. HURD.

Patented Feb. 27, 1912.-

2 SHEETS-SHBET 1.

H. G. VOIGHT' & N. B. HUR'D. COMMUNICATING DOOR LOCK.

APPLICATION FILED JUNE 27, 1911.

Patented Feb.27, 1912.

2 SHEETS-SHEET 2.

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ITED STAWENT OFFICE.

HENRY G. VOIGHT AND NORMAN B. HURD, OF NEW BRITAIN, CONNECTICUT, ASSIGN- ORS TO RUSSELL & ERWIN MANUFACTURING COMPANY, OF NEW BRITAIN, CON- NECTICUT, A CORPORATION OF CONNECTICUT.

COMMUNICATING-DOOR LOCK.

Specification of Letters Patent.

Application filed June 2'7, 1911.

To all whom it may concern:

Be it known that we, HENRY G. VOIGHT and NORMAN B. Hum), citizens of the United States, residing at New Britain, Hartford county, State of Connecticut, have invented certain new and useful Improvements in Communicating-Door Locks, of which the following is a full, clear, and exact description.

Our invention relates to looks, and particularly to those of a type adapted for use on the doors of communicating apartments of hotels.

The object of the invention is to provide a lock of this character with safety thumb bolts operable by independent thumb turns from opposite sides of the door in combination with a dead bolt operable from either side of the door, which bolt can be projected and retracted by a pass key or a guard key,

the construction being such, that either of the thumb bolts when projected alone, or both simultaneously when both are projected may be simultaneously retracted with the retraction of the main bolt by the guard key, but not by the pass key. The main bolt, however, cannot be retracted by the guest or key of the corridor door, nor by the operation of the thumb bolts. The communicating door may, therefore, be locked from either side by a guest by means of the thumb bolts to prevent the opening of the door from the opposite side. The door may also be locked by projection of the dead bolt by the pass key in the hands of the maid or housekeeper, but this key cannot retract either of the thumb bolts. The door may also be locked by projection of the main bolt by the guard key, used in the hands of the bell boy, or some one in authority in the hotel, and this key may also retract either of the thumb bolts when projected alone, or both, when both are projected from either side of the door, so that, if it is desired to throw adjoining apartments en suite, it is possible for the holder of this guard key to do so without the necessity of going around to the other apartment to release the thumb bolt operable by the thumb turn from that Side only.

Another feature of this invention resides in the fact that both the pass and guard keys used with this look are of the drill pin type, and may be operated from either side of the door to perform the functions above outlined.

With the objects enumerated in View, the invention consists in the construction and arrangement of parts, the preferred embodiment of which is illustrated in the accompanying drawings, in which,

Figure 1 is a side elevation of the lock, the cover plate being removed for clear illustration. Fig. 2 is an elevation of the face plate, showing the several bolts. Fig. 3 is a view similar to Fig. 1 showing the dead bolt and one thumb bolt in projected position. Fig. 4 is a sectional View of the lock on the line ww, Fig. 3. Fig. 5 comprises a plan and sectional view of the duplicate thumb turn roll-backs. Fig. 6 is a detail view of the dead bolt, and a thumb bolt connecting member carried thereby. Fig. 7 is a detail View of the thumb turn roll-back releasing member. Fig. 8 comprises side elevations of two tumbler bars, used in conjunction with the tumbler mechanism of the dead bolt. Fig. 9

is a View of the ward of the pass key, and,

Fig. 10 is a similar view of the guard key.

In the embodiment of our invention herein selected for illustration, 1 indicates the lock case, 2 the cover plate therefor, 3 the face plate, 4 the dead bolt, 5 one of the thumb bolts, and 6 the companion thumb bolt. The main bolt is provided with upper and lower sets of tumblers, the upper set being gated to cooperate with a fence post 7 and operated directly by a key inserted from the out side in a keyhole 8 shown in the cover plate, Fig. 4. The lower set is connected with the upper set by means of tumbler bars 9 and 10, respectively, and this set is operated directly by a key inserted through the inside keyhole 11, (Figs. 3 and 41). The outer keyhole 8 is provided with a key post 12, the inner keyhole with a key post 13, adapted to receive the drill pins of the pass key 14: and guard key 15. The thumb bolts 5 and 6, which we will term for convenience upper and lower thumb bolts, are operable by duplicate thumb turn roll-backs 17 each having an arm 18 engaging the roll-back slot 19 of its bolt, which arm is engaged by a spring 20 to hold it in projected or retracted position and in position to deadlock its bolt in the manner well-known in this art. Each roll-back is also provided with a releasing arm 21, which is engaged and operated by a releasing lever 22, which in turn is operated by one of the upper sets of tumblers of the main bolt, as hereinafter described. Beneath the thumb bolts, as viewed in Figs. 1 and 3, is located a sliding bolt-connecting member 23 having a post'24 which lies within slots 25 in the forward ends of the thumb bolts, and having a spring 26 which holds said latching member 23 to spring a lug 27 on its rear end into the path of the projection 28 on a complementary latching member 29 pivoted at 30 on the main bolt 4. (See Fig. 6.) This complementary latching member has a spring 31 to maintain its shoulder 28 normally out of line with the lug 27 on the first latching member.

The upper set of tumblers of the clear bolt comprises the usual plurality of gated members cooperating with the fence post to determine the permutations of the lock and confine the operation of the lock to certain predetermined keys. Said set also includes a latch operating releasing member 32, Fig. 3, which overlies the latch member 29, and has a depressed bar 33 which is adapted to engage a lug 34 at the rear lower edge of the latch member 29. This latch operating and releasing member also has a projection 35 adapted when said member is raised by the proper key, to swing the releasing lever 22 upward, and thus release the thumb turn roll-backs 17 from the dead locking position indicated in Fig. 3. The pass and guard keys, respectively are so bitted that the first will not raise the latch operating and release member 32 sufiiciently to cause it in turn to raise the latch member 29 to bring its shoulder 28 into the path of the lug 27 on the latch member 23 when said member 23 is drawn forward by either one or both of the thumb bolts 5 and 6, as shown in Fig. 3, hence, while the pass key may project and retract the dead bolt, it cannot retract either of the thumb bolts. The guard key, however, by its bitting is adapted to raise the latch operating release member 32, and consequently the latch member 29 to bring the latter into engagement with the lug 27 of the latch member 23, whereby retraction of the dead bolt by the guard key will simultaneously retract either or both of the thumb bolts 5 and 6.

As above stated, the direct operation of the latch operating and release member is effected from the outer keyhole. In order that the same operation may be performed from the-inner side of the door, the tumblers of the second or lower set are so located and shaped that they may be operated by keys inserted from the inner side or in the keyhole 11, and through the tumbler bars 9 and 10, effect release of the gated tumblers of the upper set from the fence post 7 and proper actuation of the bolt connecting latches when the guard key is operated. To this end the lower tumblers include duplicate superposed tumblers, such for example as 36 (Fig. 3) each having a projection 37. The tumbler bars 9 and 10 are gated as at 39, Fig. 8, respectively, to receive the projections 37 at the rear of the tumbler operating levers 36. The tumbler levers 36 are so arranged that one,here the lower one 9will be raised in advance of the upper by the bitting of the pass key, whereby the squared port-ion 40 of its upper end will raise the gated tumblers of the upper end to release them from their fence and permit projection of the dead bolt by a key inserted in the inner-here the lower keyhole. This tumbler bar 9 is also provided with a notch 41 which registers with the latch. operating and release member 32 of the upper set, and therefore fails to raise said member sufficiently when the bar 9 is raised by said pass key to cause connection between the connecting members on the main and thumb bolts, respectively.

The slot 28 in the bar 9 has a downward extension 42 to allow clearance for the projection 37 of the upper tumbler lever 36, and the companion tumbler bar 10 is provided with an extension 43 of its slot 39 to allow of the advance movement of the projection 37 of the lower tumbler lever 36 when the pass key is operating toward raising of said bar 10 by said pass key. The guard key is so bit-ted, however, that the upper tumbler lever 36 is raised to the same extent as the lower, and by its projection 37 raises the tumbler bar 10, which by .its squared upper end at not only releases the gated tumblers of the upper set, but also raises the latch operating and releasing member 32 sufliciently to cause it to raise the lower latch 29 into engagement with the thumb bolt latch 23, so that upon retraction of the main bolt by the guard key, either or both of the thumb bolts, if projected, will be retracted.

By the mechanism above described, therefore, the communicating door may be barred from being opened from either side by the guests, and it may be barred against being opened from one side or the other by the pass key when either of the thumb bolts is projected, and finally, it may be opened from either side by the holder of the guard key, whether locked by either or both of the thumb bolts.

lVhile we have herein described a particular embodiment of our invention, it may be altered in detail and relative arrangement of parts, without departing from the spirit and scope thereof.

What we claim is:

1. In a lock mechanism, the combination with a pair of independent bolts, and independent means for operating said bolts respectively from opposite sides of the door, a key controlled bolt, a plurality of keys including a pass key and a guard key for operating said bolt, and means whereby both of said pair of bolts may be retracted by the retraction of said key controlled bolt by said guard key, and may be prevented from retraction by the retraction of said key bolt by said pass key.

2. In a lock mechanism, the combination with a pair of independent bolts, independent means for actuating said bolts respectively from opposite sides of the door, key controlled means, a plurality of keys including a pass key, and a guard key, and means whereby'both of said pair of bolts may be retracted by operation of said key controlled means by said guard key, and may be prevented from the retraction by operation of said key controlled means by said pass key.

3. In a lock mechanism, the combination with a pair of independent bolts, independent means for operating said bolts respectively from opposite sides of the door, key controlled means operable from either side of the door, a plurality of keys including a pass key and a guard key, and means whereby both of said independent bolts may be retracted by operation of said key controlled means by said guard key, and whereby retract-ion of either of said independent bolts may be prevented by operation of said key controlled means by said pass key.

4. In a lock mechanism, the combination with independent bolts, independent means for operating said bolts respectively from opposite sides of the door, a key controlled bolt operable from either side of the door, a plurality of keys including a pass key and a guard key, connecting mechanism between said key controlled bolt and said independent bolts operable to permit retraction of said independentbolts by retraction of the key controlled bolt by said guard key and to prevent retraction of said independent bolts by retraction of said key controlled bolt by said pass key.

5. In a lock mechanism, the combination. with independent bolts, independent rollbacks for operating said bolts respectively from opposite sides of the door, a key controlled bolt operable from either side of said door, a connecting member slidingly carried by the lock case, a second connecting member carried by said key controlled bolt, and means whereby said connecting members may be connected by operation of said guard key in projecting and retracting said key controlled bolt to retract said independent bolts, and may be prevented from being connected by operation of said key controlled bolt by said pass key.

6. In a lock mechanism, the combination with a pair of independent bolts, independent roll-backs for operating said bolts respectively from opposite sides of the door, means whereby said roll-backs may deadlock their respective bolts, a member for releasing said roll-backs from deadlocking position, a key controlled bolt operable from either side of the door, a plurality of keys including a pass key and a guard key for operating said bolt, and means whereby said deadlock releasing member may be operated and said independent bolts may be retracted by operation of said key controlled bolt by said guard key, and whereby retraction of said independent bolts by operation of said key controlled bolt by said pass key may be prevented.

7. In a lock mechanism, the combination with a pair of independent bolts, independent mechanisms for operating said bolts from opposite sides of the door respectively, a key controlled bolt, a plurality of sets of tumblers for said bolt, a plurality of keys including a pass key and a guard key, one of said sets of tumblers being arranged to be operated directly from the outside by both of said keys, ,the other set being adapted to be operated directly from the inside by both of said keys, one of said sets of tumblers, including a member adapted to connect said independent bolts and said key controlled bolt when operated by said guard key from the inside or the outside, and means to prevent operation of said connecting means by said pass key operating from either side of the door, whereby said inde pendent bolts may be retracted by retraction of said key controlled bolt by said guard key exclusively.

8. In a lock mechanism, the combination with a pair of independent bolts, independent means for operating said bolts from opposite sides of the door respectively, a key controlled bolt operable from either side of the door, a plurality of keys including a pass key and a guard key, a set of tumblers for said key controlled bolt operated directly from the outside by either of said keys, a second set of tumblers for Said key controlled bolt operated from the inside directly by either of said keys, connecting means between said sets of tumblers, and a connecting member included in one of said sets of tumblers adapted to connect said key controlled bolt with said independent bolts whereby said independent bolts may be retracted by operation of said key cont-rolled bolt by said guard key from either side of the door, and whereby retraction of said independent bolts may be prevented during operation of said key controlled bolt by said pass key from either side of the door.

9. In a lock mechanism, the combination with a pair of independent bolts and inclependent thumb turns for operating said bolts from opposite sides of the door respectively, a key controlled dead bolt, a plurality of tumblers for said dead bolt, a plurality of keys for operating said tum blers including a pass key and a guard key, connecting means between said dead bolt and said pair of bolts, said tumbler mechanism including a tumbler adapted when operated by said guard key to connect said pair of bolts with said dead bolt whereby the former may be retracted by the latter, and adapted when said pass key is operated to prevent such connection of said bolts.

10. In a lock mechanism, the combination with a pair of independent bolts, independent means for operating said bolts from op posite sides of the door respectively, a third bolt-adapted to be operated from either side of the door, a plurality of sets of tumblers for said third bolt, one of which is operated directly from one side of the door, the other directly from the opposite side of the door, tumbler bars connecting said sets of tumblers, means for connecting said pair of bolts with said key bolt operable by a tumbler of one of said sets of tumblers, a tumbler in said second set adapted to operate one of said tumbler bars and thereby to operate said tumbler of the first set, a second tumbler in said second set adapted to operate a second tumbler bar and thereby to operate the tumblers of the first set, with the exception of said tumbler thereof mentioned, said first tumbler bar being arranged to be only so operated by said guard key.

11. In a lock mechanism, the combination with a pair of independent bolts, independ ent means for operating said bolts from opposite sides of the door respectively, a key controlled bolt, a connecting member mount ed on a lock case adapted to engage said pair of bolts, :1. connecting member carried by said key controlled bolt, a tumbler mechanism for said key controlled bolt, a plurality of keys including a pass key .and a guard key, said tumbler mechanism including a tumbler adapted to be operated by said guard key only to cause interengagement of said connecting members whereby both of said pair of bolts may be retracted by operation of said key controlled bolt.

12. In a lock mechanism, the combination with a pair of independent bolts, independent means for operating said bolts respectively from opposite sides of the door, a key controlled belt, a keyhole on the outer side of said look, a key post for operating therewith, a set of tumblers for said bolt, a plurality of drill pin keys adapted to be inserted in said keyhole and to engage said key post to operate said tumblers directly, a second keyhole on the opposite side of said look, a key post cooperating therewith adapted to receive said drill pin keys, a set of tumblers for said key controlled bolt adj acent to said second keyhole, means whereby said first set of tumblers may be operated by the operation of said second set, means of connection between said pair of bolts and said key controlled bolt, said first set of tumblers including a tumbler adapted to operate said connecting means by operation of said guard key when the latter is operated from the outer side or inner side of the lock, and means to prevent the operation of said connecting means when said pass key is operated. I

13. In a lock mechanism, the combination with a pair of independent bolts, independent means for operating said bolts respectively from opposite sides of the door, a key controlled bolt, means for connecting said key controlled bolt to said pair of bolts, a set of tumblers for said key controlled bolt including a tumbler adapted to operate said connecting means, a plurality of keys in cluding a pass key and a guard key, means whereby said guard key may operate all of said tumblers from either side of the door to retract said pair of bolts and said key bolt simultaneously, and means whereby said pass key may retract only said key con trolled bolt from either side of the door.

14. In a lock mechanism, the combination with a pair of independent bolts, independent means for operating said bolts respectively from opposite sides of the door, a key controlled bolt, a member mounted in the lock case and adapted to engage either or both pair of bolts, a member carried by said key controlled bolt, a plurality of keys including a pass key and a guard key, a connecting member operated by said key controlled bolt and adapted to engage the first connecting member, and means whereby only said guard key may effect such connection and retract said key controlled bolt, and either or both of said pair of bolts simultaneously. 15. In a lock mechanism, the combination with a pair of independent bolts, independent means for operating said bolts respectively from opposite sides of the door, a key controlled bolt, two sets of tumblers for said bolt, means adapted to connect said pair of bolts with said key controlled bolt, one of said sets of tumblers including means for eitecting such connection, a tumbler bar con necting said sets of tumblers including said tumbler for effecting such connection, a second tumbler bar, connecting said second set of tumblers exclusive of said tumbler, a plurality of keys including a pass key, and a guard key, said guard key being adapted to operate said first set of tumblers directly from one side of the lock and to operate said key is adapted to operate only said key confirst Sgt of tumblers 1iondirliotly Ehrough said trolled bolt.

secon set, and tum ler ars rom the in- T a side of the lock to retract said key controlled bolt and simultaneously said pair of bolts, said pass key being adapted to oper- WVitnesses:

ate said tumbler mechanism exclusive of M. S. WIARD,

said particular tumbler whereby said pass H. J. BROWNE.

Copies of thispatent may be obtained for five cents each, by addressing the Commissioner of Patents Washington, D. C.

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