US922675A - Door-lock. - Google Patents

Description

G. H. DAY.

DOOR LOCK.

APPLICATION FILED FEB. 10, 1909.

922,675 Patented May 25,1909

tlbllfi l llh GEORGE l-I. DAY, OF SOUTHBRIDGE, MASSACHUSETTS.

DGOR-LOCK.

Application filed. February 10, 1909.

To all whom it may concern:

Be it known that I, GEORGE H. DAY, a citizen of the United States, residing at Southbridge, county of Worcester, and State of Massachusetts, have invented an Improvement in Door-Locks, of which the following description, in connection with the accomp anying drawing, is a specification, like numerals on the drawing representing like parts.

This invention has for its object to provide a novel lock which is especially designed to be used for locking sliding doors, although the lock is capable of use in a great variety of other locations where two parts are to be locked together.

The device comprises a locking member carried by one of the parts to be looked and adapted to enter and engage in a recess in the other part, and an actuator supported by the other part and adapted by its movement to throw the locking member into operative position.

One embodiment of my invention will first be described and then the novel features thereof will be pointed out in the appended claims.

Referring to the drawings, Figure 1. shows my improved look as it would be used for locking a sliding door, a portion of the door and a portion of the part to which the door is locked being broken out to better show the construction; Fig. 2 is a section on the line a-.'1:, Fig. 1.

I have herein shown my invention as it would be used in lockinga sliding door 3 to a door casing t, but the two parts to be locked together might be two sliding doors, or in other words, the part 4 might be a sliding door as well as the part 3, or said two parts might be any other two members which were to be locked together without departing from the invention. 1 wish it distinctly understood, therefore, that my invention is not confined in its use to locking sliding doors, and that by hereinafter referring to the part 1 as a door casing and the part 3 as a sliding door, I do not limit my invention to use in this particular way.

The locking device includes a locking member 5 which is herein shown as sustained by the door casing 4 and which is adapted to enter into a recess 6 formed in the edge of the door 3 and have locking engagement therein, and an actuator 7 sustained by the door 3 and adapted by its movement in said door to control the movement of the locking member Specification of Letters Fatent.

Patented May 25, 1909.

Serial No. 277,163.

5. In the present embodiment of my invention the locking member 5 is in the form of a lever pivoted at 8 to a holder or support 9 that is sustained in a recess 10 formed in the door casing 4, and said lever is provided at its end with the locking toe or projection 11 that is adapted to enter into the extension 12 of the recess 6 when the looking member is in operative position. This extension 12 may conveniently be formed by a plate 13 which is secured to the edge of the door and which is provided with an aperture 14 through which the end of the locking member may project. The locking member is extended beyond the pivot 8 and is provided with a tail 15 wl'iich is adapted to be engaged by one end of an intermediate lever 16 that is also shown as pivoted to the holder 9, as at 17. The upper end of the intermediate lever 16 is in position to be engaged by the actuator 7. This actuator may be similar to the ordinary belt of a door lock and may be actuated either by means of a key inserted in the key hole 18 or may be provided with any other suitable or usual mechanism for moving it in the door. The actuator 7 is normally withdrawn entirely within the door and when it is so withdrawn the locking member may assume the dotted line position Fig. 1.

I prefer to employ automatically-operative means, such, for instance, as a spring 20, for normally maintaining the locking member in the dotted line position, and in the present embodiment of 1 iy invention this spring is mounted in a recess 21 formed in the holder 9 and acts against a plunger 22 which in turn acts against the locking member 5. The holder 9 may have any suitable shape and construction. I have herein shown it as provided with the two wings 23 between which the locking member and the intermediate member are received, and in which the pintle pins 8 and 17 are supported. The holder is also shown as being formed with a face plate 24 which is fastened to the door casing in any suitable way, as by means of screws. This face plate is provided with an aperture 25 in which the end of the looking member plays, and with another aperture 26 through which the actuator 7 is adapted to be projected.

When the door is unlocked the bolt or actuator 7 is withdrawn and the locking member and intermediate member are in the dotted line position Fig. 1. In order to lock the door, the actuator 7 is projected, as seen in Fig. 1, either by means of a key or by any other suitable device, and during its movement it acts against the intermediate mem ber 16, thus turning the latter so that the lower end thereof will act against the tail 15 of the locking member thereby to throw the locking member up into the full line position. As the door is closed, the hooked end 11 of the locking member enters the aperture 14 and the movement of the actuator 7 operates to throw said end up to cause the hook or projection 11 to enter the extension 12 of the recess and in behind the plate 13. The door is thereby locked and can be unlocked only by withdrawing the actuator7 thereby permitting the spring 20 to return the locking member to its dotted line position.

It will be seen from the above that the locking member is sustained by one of the parts to be locked but is actuated by the movement of an actuator sustained in the other part to be locked. It will also be evident that the part 3 might be one member of a double sliding door, and that the part 4 might be the other member thereof, or that the two parts 3 and 4 could be any other parts which move toward and from each other and which are desired to be locked together. It is also possible with suitable modifications to use the device in connection with a swinging door as well as in connection with a sliding door. I do not wish to be limited, therefore, to the constructional details shown, as the construction could be changed in various ways without departing from the invention.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent is 1. In a lock, the combination with a lock ing member adapted to be sustained by one of two parts to belocked together, of an actuator movably sustained by the other of said two parts, and means operated by movement of the actuatorrelative to the art on which it is mounted to move the ocking member into locking position.

2. The combination with two parts to be locked together, of a movable locking member sustained by one of said parts, the other part having a recess to receive the locking member, and a movable ac uator sustained by said other part and adapted by its movement to move the locking member into looking position.

3. The combination with two parts to be locked together, of a locking member having an extension pivoted to one of the parts, the other part having a recess to receive said extension, an intermediate member also pivoted to the first-named part, and an actuator sustained by said other part and adapted to engage and operate the intermediate member whereby the latter operates the locking member. 7

4. In a lock, the combination with a locking member adapted to be sustained by one of two parts to be locked together, of a spring to hold said lock normally in inoperative position, an actuator movably sus tained by the other of said two parts and adapted by its movement to move the locking member into operative position against the action of the spring.

5. In a lock, the combination with an actuator movably sustained by one of two parts to be locked together and adapted to be projected therefrom or withdrawn, of a locking member movably sustained by the other of said two parts, a spring normally holding the locking member in its inoperative position, and a pivoted intermediate lever sustained by said second part and adapted to be engaged by the actuator when the latter is projected and the two parts are in closed relation to each other whereby movement of the intermediate lever throws the locking member into operative position. In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

GEORGE H. DAY. Witnesses F. G. BLANCHARD, G. A. ORDWAY.

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