US1207450A - Lock. - Google Patents

Description

H. G. VOIGHT.

LOCK;

APPLICATION FILED DEC. 4. lens.

1,207,450. Patented Dec. 5,1916.

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HENRY G. VOIGHT, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR T0 SARGENT & COM- PANY, OF NEW HAVEN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

LOCK.

Specification of Letters Patent.

Patented Dec. 5, 1916.

Original application filed. March 13, 1915, Serial No. 14,124. Divided and this application filed December 4, 1915. Serial No. 65,058.

To all whom it may concern:

Be it known that I, HENRY Gr. VOIGHT, of New Britain, county of Hartford, and State of Connecticut, have invented certain new and useful Improvements in Locks, of which the following is a full, clear, and exact description.

This invention relates to locks and more especially to master keyed cylinder locks.

My improved cylinder can be used advantageously with mortise locks of the type disclosed in my application, Serial No. 14,124, of which the. present application is a division, and with various other types of mortise locks where an emergency key or a shut-out key is used in addition to the change key.

One of the primary objects of the present invention is to provide a master keyed cylinder lock having a plurality of rollbacks, and a plurality of keys, said rollbacks rotatable together by any of said keys, and one of said rollbacks being movable radially oi' the cylinder lock, and of the other rollback by one of said keys, which is of less len th than the keyway but not by another oi said keys.

The invention also has in view the general improvement of locks of the master keyed cylinder type.

To these and other ends, the invention consists of the novel features and combinations of parts to be hereinafter described and claimed.

In the accompanying drawing, Figure 1 is a rear elevation of a cylinder lock embodying my improvements, showing a portion of the mortise lock mechanism described in my application Serial No. 14,124 hereinbefore mentioned; Fig. 2 is a section on line 2-2 of Fig. 1, showing the master key (maids key) in the lock; Fig. 3 is a sectional view of the rear portion of the cylinder lock showing the rollbacks actuated by the master key; Fig. 4 is a view generally similar to Fig. 2, showing the rollbacks actuated by'the emergency key; and Fig. 5. is a view similar to Fig. 1, showing the rollbacks actuated by the emergency key.

My improved cylinder lock comprises a case 25 containing a key plug 54 surrounded by an eccentric sleeve 55, and the key plu and sleeve are adapted to be locked to the case by the customary sectional pin tumblers 56. The arrangement is such that at least one key will rack the pin tumblers so as to rotate the key plug individually, while at least one key will rack the pin tumblers so as to rotate the key plug and sleeve together. rotates on the axis of the sleeve rather than its own axis, and it is to be noted that the axis of the sleeve is disposed somewhat above the axis of the key plug. A dog or rollback 57 is secured to the rear end of the key plug by screws 58, and is provided with a radial arm carrying a projection '59, which, in the present case, is adapted to engage a projection 44 on a tumbler 42.

The projection 59 on the rollback 57 extends In this last case, the key plug rearwardly from said rollback, as best shown in Fig. 2. Another dog or rollback 60 is adapted to rotate on the axis of the sleeve 55 and comprises a ring-like body portion loosely encircling the rear extremity of the sleeve and carrying a radial arm 61 with rearwardly directed side flanges, between which the arm of the rollback 57 is confined. The rollback 57 may be termed the emergency rollback, because it is adapted to operate the emergency tumbler 42, while the rollback 60 may be termed the regular or ordinary rollback because it is adapted to engage an ordinary tumbler 41 of the mortise lock mechanism. It will be understood that the operating movement of the rollback 60 is imparted to it by reason of the fact that it is interlocked with the arm of the emergency rollback 57, as described, said emergency rollback being rotatable by all of the keys adapted to the lock because it is fixed to the key plug. The interlocking of the arm of the emergency rollback between the flanges 62 of the regu lar rollback permits independent radial movement of said rollbacks when the key plug rotates on its own axis instead of on the axis-of the sleeve, as will be understood.

In Fig. 2, I have shown a key 64 inserted into the cylinder lock. In the parent application, Serial No. 14,124, this key is referred to as a maids key, but it might be used just as well as a change key, and, in the present case, it will be referred to by the latter term in order to simplify the description. In the particular case illustrated, this key racks the pin tumblers in such a manner as to interlock the key plug and sleeve, and release the sleeve from the case so that the plug and sleeve are free to rotate 0n the longitudinal axis oi the sleeve. in actuating the rollbacks 57, 60, they both rotate on the axis of the sleeve and maintain the same relation to each other so that when the key has been :2 turned through half a revolution, the roll- 7 backs.

backs will actuate the respective llllll'lblGIfS 4:2, ll in the manner shown in Fig. 3. The key 65, shown in Fig. l, is referred to herein as an emergency key, and it is adapted to rack the pin tumblers 56 in such a manner as to release the key plug individually so that it can rotate on its own axis. In actuating the cylinder lock by the emergency key, as shown in Figs. 4L and 5, the sleeve remains stationary but both rollbacks 57, 60 are rotated because of the interlocking engagement of the rollback 60 with the operating rollback 57. Here the two rollbacks rotate on different axes, however, the axis of rotation of 57 being lower than that of (30, so that when the key is turned in the lock the rollback 57 will be moved radially outward and downward relatively to the rollback 60. In this manner, the projection 59 on rollback 57 is moved outward in the grooved arm of rollback 60 so that it approaches the extremity of said arm more nearly than in the case shown in Fig. 3.- Thus, the rollback 57 depresses the tumbler e2 to a much greater extent whenthe emergency key is used ("Fig-1.4:) than when the change key is used (Fig. As 'the key is moved back to the initial position the projection 59 is inove'dradially inward until it again occupies its original position; The difference in theamplitude of movement of the tumbler 4L2 when actuated by the two different keys is utilized in giving the lock the necessary emergency release and shut-out functions as described in the parent application, altliou'gh it is manifest that the cylinder herein described may be used in connection with various types of locks, where different keysdiave different functions.

:It will be observed that by my improved construction, I am enabled to move one rollback radially of another by a short key which is of less length than the keyway anddoes not pass through either of said roll- It will also be observed that the member 57 or, its equivalent has adouble function, that is to say, it serves as an operator for the rollback 60 or its equivalent, and also as an additional rollback.

Various changes in the. details of the con struction may be adoptedwithout departing from the scope of the invention as defined in the claims. I

flVhat I claim is: f1. The combination with a cylinder lock and a plurality of-keys therefor, of a .p'ltirality of rollbacks on said cylinder lockall r'otatable'by all of said keys, one ofsai-d roll hacks being l'IlOYHblG radially oi the other by a short key which is oi? less length than the key Way and means to prevent movement of said first roll-back radially of such other rollback by another oi said keys; substantially as described.

2. A cylinder lock having a plurality oi? rollbacks permanel'itly secured to the rear end thereoi? and. a plurality of keys, one of said rollbacks being located at the rear of the other and having a rearwardly directed bolt-operating projection, and means for moving said last-named rollback radially of the other rollback by one of said keys said rollbacks being immovable relatively to each other by another of said-keys; sub stantially as described.

The combination with a cylinder lock and a plurality of keys therefor, of two rollbacks on the rear end of said cylinder lock. both rotatable by all of said keys, one of said rollbacks located rearwardly of the other and having a rearwardly directed boltoperating projection, the other rollback projecting radially beyond the first-named rollback, and the first rollback being movable radially of the second rollback by a short key which :is of less length than the keyway substantially as described.

4:. A cylinder lock having a rollback with a radial guide-way, a rollback projection engaging said guide-way, and a key for positively moving said rollback projection outwardly and inwardly in said guide-way; substantially as described.

A cylinder lock having a rollback with a radial guide groove, a second rollback at the rear of the first having an arm engaging said groove, and a rearwardly directed boltoperating projection on said arm, and a key for moving'said bolt-operating projection inward as well as outward in said 1 groove; substantially as described.

6. In a cylinder lock, the combination of a key plug, a sleeve, a rollback fixed to the key plug, and a rollback loose on the sleeve, actuated by said first rollback; substantially as described.

7 Acy'linder lock having a plurality of rollbacks permanently secured to the rear end thereof, aplurality of keys, and means for giving one of said rollbacks a radial movement relatively to the other by one of said keys, said first rollback being moved positively in an inward direction relatively to said second rollback by means of said key as well as in an outward direction, but being immovable relatively to said second rollback by another of said keys; substantia-ll y as described.

In witness whereof, I have hereunto set my hand on the 2nd day of December, 1915.

5 HENRY G. VOIGHT.

.Gopies '01 this patent may he. obtained tonfive cents eaclnhy addr ng the Commissioner of Paten s, Washington, D. G.

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