US1137803A - Lock. - Google Patents

Description

W. E. SPARKS.

LOCK. APPLICATION FILED JUNE 23. 1914.

1,137,803. Patented May 4, 1915.

1H5 NORRIS PETERS c0. PHOTO-LITHO.v WASHINGTON. D. c.

WILLIAM E. COMPANY,

SPARKS, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO SABGENT 86 OF NEW HAVEN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

LOCK.

Specification of Letters Patent.

Patented May 4, 1915.

Original application filed November 29, 1913, Serial No. 803,724. Divided and. this application filed June 23,1914. Serial No. 846,802.

To all whom it may concern Be it known that I, WILLIAM E. SPARKS, a citizen of the United States, residing in the city and county of New Haven and State of Connecticut, have invented certain new and useful Improvements in Locks, of which the following is a full, clear, and exact description. I

This invention relates to looks, and more particularly to master-keyed cylinder locks of the type described in my application, Serial No. 803,724, filed November 29, 1913, of which the present application is a division.

One of the objects of the invention is the provision of a cylinder lock which permanently carries a plurality of rollbacks, one of such rollbacks being displaced relative to the other by one of the keys without be in so displaced by another key.

rdinarily, the change key and the emergency key will both rotate the dog or rollback connected to the rear end of the key plug, which dog or rollback is in a position to engage one part of the latch or look mechanism in a mortise lock with which the cylinder lock is associated. The rollback connected to the key plug may be called the regular or primary rollback. In addition to this primary rollback, there is a second or auxiliary rollback, forming a. permanent part of the cylinder lock, which is normally so positioned relative to a part of the latch or look mechanism as to be incapable of actuating the same, but which is moved into operative position relative to said part when the emergency key is inserted into the keyway, without being so moved when the change key is inserted into the keyway. Thus, the change key actuates only one rollback in an operative manner, and one part of the latch or look mechanism, while the emergency key actuates a plurality of rollbacks in an operative manner, and the corresponding parts of the latch or look mecha nism.

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

In the accompanying drawing, Figure 1 is a fragmentary section of a mortise lock equipped with my improvements, showing the change key inserted into the cylinder lock. Fig. 2 is a similar view, showing the emergency key inserted into the cylinder lock. Fig. 3 is a rear end elevation of the cylinder lock and the associated parts of the mortise lock mechanism, showing the rollbacks in one position. Fig. 4: is a similar view showing the rollbacks in another position, and Fig. 5 is a section on line 5-5 of Fig. 2.

Referring to the drawing, the case 10 of the mortise lock contains certain lock mech anism which may be similar to that illustrated and described in the parent application, Serial No. 803,721, which mechanism includes two tumblers 11 and 12 located in different planes. A cylinder lock 13 secured to the lock case in the usual manner comprises a case 14, a key plug 15 rotatable therein, a sleeve 16 surrounding the key plug, and the usual pin tumblers 17 cooperating with the key plug and sleeve in the well known manner. In the form shown a dog or rollback 18 is rotatably mounted on the rear end of the cylinder lock to turn on the axis of the sleeve 16, and said dog or rollback is operated by an operator 19 secured to the rear end of the key plug by screws 20, (shown in Fig. 5, but omitted in Figs. 3 and 4) said rollback and operator having substantially the same arrangement described in Letters Patent No. 1069731, granted to Sargent & Company, on August 12, 1913, as assignee of John H. Shaw. In

the broader aspects of the invention, however, the particular arrangement of the regular or primary rollback 18 with respect to the cylinder lock is immaterial. The sleeve 16 may be omitted, and the rollback 18 may be directly secured to the key plug.

A slide 21 located in the rear end portion of the keyway carries an auxiliary dog or rollback 22. This auxiliary rollback is prefen ably located back of the primary rollback, viz. at the extreme rear of the cylinder lock, and it forms a permanent part of such lock, and is adapted to be shifted relative to the primary rollback by the emergency key without being so shifted by the change key.

The primary rollback 18 is arranged in the plane of the tumbler 11, and when rotatedis adapted to operate said tumbler. The auxiliary rollback 22 is normally positioned in'operatively with respect to the tumbler 12, but when the emergency key is inserted into the lock said auxiliary rollback when turned will actuate the tumbler 12.

The slide 21 is acted on by a spring 23, which end 24 will take into a correspondinglyshaped recess 25 at the inner edge of the slide 21 in such a manner that the slide and its rollback 22 will not be shifted relative to the primary rollback. The emergency key 26, however, is provided at its inner end with a squared off portion 26 adapted to come in contact with the inner edge of the slide '21 in such a manner as to move the slide and its rollback 22 rearwardly in opposition to the spring 23 so that the auxiliary rollback will be in a position to actuate the tumbler 12 When said rollback is turned, as shown in Fig. 2. In this manner,

the emergency key will actuate both tumblers 11 and 12 by operation of -both rollbacks 18 and 22, whereas the change key being incapable of positioning the auxiliary rollback op'eratively with respect to its corresponding tumbler, will only actuate the tumbler 11 by means of the regular or primary rollback.

When the emergency key is withdrawn from the cylinder lock the spring 23 carries the auxiliary rollback from the position shown in Fig. 2 to the position shown in Fig.1.

In the particular form of my invention which I have selected for illustration, the auxiliary rollback carried by the cylinder lock is arranged to slide rearwardly relative to the primary rollback when the emergency key is inserted into the look, but the particular direction of movement of the movable rollback relative to the fixed rollback is immaterial in the broad aspects of the invention. Various changes in these and other respects may be adopted without digressing from my inventive idea as expressed in the claims.

What I claim is:

1. A cylinder lock having two rollbacks, and two keys for said lock, one of said rollbacks being displaced relative to the other by the insertion of one of said keys without being so displaced by the insertion of the other key; substantially as described.

2. A cylinder lock having a key plug, a rollback connected to said key plug, a change key and an emergency key for operating said rollback and, an auxiliary rollback 'carried by the cylinder. lock, and displaceable relative to said first rollback by the emergency key only; substantially as described.

3. A cylinder lock having a key plug, a rollback connected to the rear end of said key plug, an auxiliary rollback, a plurality ofv keys, and means supporting said auxiliary rollback from said cylinder lock, and providing for movement thereof relative to the first rollback by engagement with one of said keys; substantially as described( 4. A cylinder lock having a key-engaging 'member at the rear end of the keyway, and

a dog or rollback carried by said member; substantially as described.

v 5. A cylinder lock having a key-engaging slide at the rear end of the keyway, and a dog or rollback carried by said slide; substantially as described. 7

6. A cylinder lock having a'key-plug, a rollback connected to said key plug, a keyeng'agi'ng slide projecting into the keyway of said key plug, and an auxiliary rollback carried by said slide, and movable relative to said first rollback; substantially as described.

7 A cylinder lock having two rollbacks, two keys, one of said rollbacks being theplaceable relative to the other by one of said keys, and means for returning the displaceable rollback to its initial" position when the last named key is withdrawn from the keyway; substantially as described.

8. A cylinder lock having a primary rollback, an auxiliary rollback, a movable member carryir 1gv said auxiliary rollback and pro ecting into the keyway, and means for normally holding said auxiliary rollback in a definite position relative to the pr-imary rollback; substantially as described.

9. A cylinder lock having a primary roll- 7 back, an auxiliary rollback, a slide carrying said auxiliary rollback, movable with reference to said, primary rollback, and a' spring acting on said slide, substantially as described.

10. A cylinder lock having aprimary rollback, an auxiliary rollback, and a movable key-engaging member carrying said auxiliary rollback; substantially as described.

11. In a cylinder look, a memberin the rear end of the keyway adapted to be projected rea'rwardly by'a key, and a rollback engagement with at least one of said keys,

and a dog or rollback carried by said member, and adapted to be projected from the rear end of said lock; substantially as described. Y

carried by said member and movable there- 13. A cylinder lock having a plurality of rollbacks bodily displaceable relative to each other by the insertion of a key; substantially as described.

1%. A cylinder lock having a plurality of rollbacks carried thereby and forming permanent parts thereof,said rollbacks bodily displaceable relative to each other by the insertion of a key; substantially as described.

15. A cylinder lock having a plurality of rollbacks carried thereby and forming permanent parts thereof, one of said rollbacks being movable bodily relative to another, and means yieldingly holding said movable rollback in a predetermined position; substantially as described.

16. A cylinder lock having a plurality of rollbacks, one of said rollbacks bodily movable relative to another, and having a Copies of this patent may be obtained for five cents each, by addressing the carrying part projecting into the keyway; substantially as described.

17. A cylinder lock having a bodily movable rollback, and a carrier for said rollback projecting into the keyway; substantially as described.

In Witness whereof, I have hereunto set my hand on the 17th day of June, 1914.

WILLIAM E. SPARKS.

Witnesses:

ALBERT A. PAGE, WILLIAM G. HAFNER, Jr.

Commissioner of Patents,

Washington, D. 0.

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