US475137A - Electric lock - Google Patents

Description

(No Model.)-

F. MORGENTHALBR.

ELECTRIC LOCK. No. 475,137. Patented May 17,1892.

* WlT/VESSES: 77 I m/ VE/VTOH Mm w y 60% ATTORNEYS.

UNTTEED STATES PATENT O F CE.

FREDERICK MORGENTI-IALER, OF BROOKLYN, NEW YORK.

ELECTRIC LOCK.

SPECIFICATION forming part of Letters Patent No. 475,137, dated May 17, 1892.

Application filed September 10, 1891. Serial No. 405,283. (No model.)

To all whom it may concern.-

Be it known that I, FREDERICK MoReEN- THALER, of Brooklyn, in the county of Kings and State of New York, have invented a new and Improved Electric Locking Attachment, of which the following is a full, clear, and exact description.

My invention relates to improvements in that class of door-locking attachments which are adapted to be secured to a door and lock it in either an open or closed position and which are electrically operated and controlled by push-buttons arranged in different parts of the building, so that if a thief should snatch anything from the building and attempt to escape one of the attendants may press a push-button and close and lock the door before the thief can escape.

My invention is especially intended as an improvement on the United States Letters Patent issued to Herman J. Meyers,-No..

427,341, dated May 6, 1890.

This invention relates more particularly to the mechanism for holding the door open and forreleasing the door, the object being to simplify the construction shown in the above patent and to provide a positive means for accomplishing the above'result.

To this end myinvention consists in certain features of construction and combinations of parts, which will be hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar figures of reference indicate corresponding parts in all the views.

Figure 1 is a sectional side elevation of the locking attachment, showing it in position to hold the door open. Fig. 2 is a similar view, but with the door shut and locked; and Fig. 3 is a broken plan showing the general arrangement of the lockingattachment and door.

The lock-casing 10 is provided with a swinging lid 11, and itis secured to the inner side of the door 12 near the top, and the door to which the casing is secured is pressed by a spring 13 or similar device, so that it will close.

itself. Projecting laterally from the outer side of the casing 10 and pivoted in a recess 14 in the casing is a latch 15, having a rounded end and a shoulder 16 near the end, which shoulder is adapted to fall into engagement with the catch 17, which is secured to a wall 18 or 7 slotted plate 21, which is secured by a screw 22 to a movable bar 23, and by means of the screw the plate may be adjusted so that the pin 20 will strike the inner end of the latch at any desired point. The upper end of the movable bar 23. is pivoted to an armature 24, which is operated by the electro-magnets 25, and which is pivoted at one end to a support 24. The lower end of the movable bar 23 is pivoted to a lever 26, which extends horizontally across the bottom portion of the case, being pivoted on a lug 27, and the throw of this lever is limited bya screw 28, which proj ects through the case-bottom and which may be easily adjusted. The inner end of the lever 26 is pivoted to the spring-pressed shank 29 of the sliding bolt 30, which moves vertically in the slideway 31, and is adapted to engage a Y catch 32, which projects inward from the doorcasement 33, and enters an opening 34 in the lock-case 10, t

The construction just described is adapted to lock the door in a closed position, and the arrangement of the sliding bolt and its connection with the armature is substantially like that shown in the patent above referred to. The electro-magnets 25 are mounted on a support 25 within the case 10, and connection is made with them throughbinding-posts 35, (see Fig. 3,) and the wires are arranged in a battery-circuit and connected with push-buttons in various partsof the store or building in the manner described in the above patent.

The operation of the device is as follows: Fig. 1 shows the normal position of the apparatus, and when the door is pushed open the latch 15 engages the catch 17 and the door is held in open position. It will be noticed that when in this position the sliding bolt 30 is drawn downward in the slideway 31. When the door is to be closed, however, the pushbutton is operated so as to close the circuit through the magnets 25, and the magnets pull downward on the armature 24, which depresses the movable bar 23, bringing the pin 20 in contact With the inner end of the latch 15, thus raising the outer end of the latch from the catch 17. The spring 13 then closes the door, and as the downward movement of the armature has thrown upward the sliding bolt 30 (see Fig. 2) the bolt will engage the catch 32 above the door and the door will be locked in a closed position.

Having thus described my invention, I claim as new and desire to secure by Letters Patent bar pivoted to the free end of the armature and provided with an adjustable pin, a laterally-extending latch pivoted in one Wall of the case and having its free end arranged in the path of the pin, and a catch secured to an adjacent support and adapted to engage the latch, substantially as described.

3. An electric locking attachment for doors, comprising a case adapted to be secured to a door, electro-magnets secured within the case and provided with a swinging armature, a movable bar pivoted to, the free end of the armature and adapted to move parallel to one side of the case, a plate adjustably secured to the movable bar and provided with a projecting pin, a latch pivoted in the adjacent wall of the case and having one end arranged in the path of the pin, and a catch secured toan adjacent support and adapted to engage the latch, substantially as described.

FREDERICK MORGENTHALER.

\Vitnesses: v

WARREN B. HUTCH'INSON, C. SEDGWIOK.

Images