US437682A - Electric safe-lock - Google Patents

Description

(No Model.)

G. L. DAMON.

ELECTRIC SEEE LOCK.

No. 437,682. Patented Oct. '7, 1890.

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(No Model.) 2 Sheets-Sheet 2 G. L. DAMON.

ELECTRIC: SAFE 1.00K. No. 437,682. Patented Oct. 7, 189.0.

www/S65. werden? UNirED STATES i PATENT OFFICE.

GEORGE L. DAMON, OF BOSTON, MASSACHUSETTS.

ELECTRIC SAFE-LOCK.

SPECIFICATION forming part of Letters Patent No. 487,682, dated October 7, 1890. Application tiled December 13, 1889. Senal No. 333,626. (No model.)

To all whom, it may concern.-

Be it known that I, GEORGE L. DAMON, of Boston, county of Suffolk, State of Massachusetts, have invented an Improvement in Safe- Locks, of which the following description, in connection with the accompanying drawings, is a specification, like letters and figures on the drawings representing like parts.

This invention relates to locks for safes, vaults, and other depositories for valuables, and has for its object to provide an electrically-actuated mechanism to be used in connection with a time-lock,whereby the door of the safe or vault may be maintained locked after the time-lock has operated.

My invention therefore consists in the combination,with the door of a safe or vault and its bolt-operating mechanism and a time-lock, of an electrically-actuated mechanism co-operating with the time-lock to maintain the safe-door locked after the time-lock has operated, substantially as will be described.

Other features of my invention will be pointed out in the claim at the end of this specification.

Figure l represents a sufficient portion of a safe or vault,its bolt-operating mechanism, the time-lock, and the electrically-actuated mechanism to enable my invention to be understood; Fig. 2, a sectional detail through the safe-door on line 4r Fig. l; and Fig. 3, a sectional detail on line m 0c, Fig. l. Fig. 4 is an inner side view of a door with my improvements added, the bolts being thrown outward, the said door bein g suitable for a safe or vault.

The safe or vault a is provided with the door a', secured thereon, as by hinges a2, the bolt-operating mechanism being preferably constructed and operated by gravity, substantially as shown and described in United States Patent No. 356,547, granted to me January 25, 1887, as assignee to O. F.. Pillard, such construction being best shown in Fig. 4 of this application, wherein the bars A A2 and A3A4, bolts B l5 B2, and the carrying-bar O,weight 3, arms 4 and 6, and rock-shaft 5 are lettered as in said patent to indicate like parts, and need not be further described herein.

The bar a3 is provided, as herein shown, with a shoulder a4, normally engaged by the short arm 2 of one lever a5 of a compound lever, the lever a5 being pivoted to the safedoor and having its long arm provided with a stud a, extended into a slot al of the other lever as of the compound lever, the lever as being pivotally supported, as at a9, by the safe-door.

The lever a9 is normally engaged by one end of a lever b, pivoted as at b', and having connected to it one end of a link b2, having its other end operatively connected to a time-lock mechanism b3, which may be of any usual or well-known construction such as now commonly used on safes.

The bolt-operating bar d3 is held elevated when the door is locked by the lever a5, the latter being held stationary by the pivoted bar as, which in turn is maintained in the position shown by the lever b, connected to the time-lock.

As now commonly constructed the bolt-operating bars are permitted to descend by gravity, as described in the patent referred to, wherein the bar f corresponds to the bar co3, herein shown, or are otherwise moved, when the lever b is moved out of engagement with the pivoted slotted bar as, by the operation of the time-lock, which in practice is set to operate at a predetermined time.

In some instances it may be desirable to keep the door locked after the time-lock has operated-as, for instance, the president or other duly-authorized officer of a bank or safedeposit may wish the opening of the safe-door to be absolutely under his control. To accomplish this obj ect, l-have provided an electrically-actuated mechanism consisting, as herein shown, of a lever el, pivoted, as at d', and having one end adapted to engage the pivoted bar a8 and its other end connected by a link d2 to an elbow-lever d3, pivoted, as at d4, and having secured to or forming part of it an armature d5 of an electro-magnet d, connected in circuit, as herein shown, with a battery d? and with a switch or circuit-controller, (herein shown as a push-button (13,) which in practice is located outside of the safe, and may be at any desired or distant place or station-for instance, at the presidents office or house.

The circuit of the electro-magnet is preferably provided with a switch or circuit-controller, which is normally open when the safedoor is open, the said circuit-controller being IOO herein shown as a spring-actuated rod e, provided with a head e', adapted to be brought into contact with a metallic block or disk e2, secured to but insulated from the safe. One end e3 of the wire of the electro-magnet d is connected to the spring-pressed rod e, and the other end e4 of the said wire is secured to the door. The block e2 is connected by wire c5 to one terminal of the push-button da, and the other terminal of the said push-button is connected by Wire e6 to one pole of the battery (Z7, the other pole of the said battery e being joined to the safe by Wire e7.

In operation the time-lock moves the link b2 in the direction of arrow 20, Fig. l, and thereby throws the lower end of the lever b out of the path of movement of the pivoted bar as; but the latter is prevented from being moved by the lever d, and the safe-door remains locked until the circuit of the electro- A magnet d6 is closed at the normally-open circuit-controller or push-button d8. As soon as the circuit is closed the magnet is energized and its armature attracted by it, thereby moving the link (12in the direction of the arrow 2O and turning the lever d on its pivot, so as to move its end out of the path of movement of the pivoted bar as, thus leaving the bolt-operating bars free to drop and unlock the safe. As shown in Figs. l and 4, the door is locked. When the levers b and d have been moved out of engagement With the bar d8, as described,

y the lever a5 is released, it in turn releasing the bolt-operating bar d8, which falls by the aotion of the weight f3, attached thereto, (see Fig. 4,) causing the pinion tto rotate ninety degrees to move the carrying bar C, as described in the patent referred to, to withdraw the bolts and unlock the door.

The carrying-bar C has in it a series of slots, (not shown,) through which are extended studs Z910, screwed into the door-plate a and preferably provided with a roller en- 1 tering said slot to guide the bar in its horizontal reciprocations to throw or draw the bolts. The studs Z910 have mounted loosely thereon disks 513 b4, each of which has attached loosely thereto by a screw b5 one of the bolts referred to, the disks Z913 having extended therethrough studs be to enter openings in the carrying-bar, said openings being at right angles to the slots referred to and bcing longer than the diameter of the studs 176. The screws b5, connecting the bolts to the disks b4, are extended through said disks and enter similar openings.

When the carrying-bar is moved in one or the other direction by the link t and gear t', the disks Z213 b4 are rotated in the proper direction by the operation of slots and openings and studs therein to thrust the bolts out or draw them in.

The combination, with a safe-door,boltop erating mechanism includ ing the bolt-operating bar d3, having a shoulder da compound lever consisting of a lever a5 to engage said shoulder and maintain the bar d3 in position to keep the door locked, and a slotted lever a8, connected to the lever a5, of a lever d to engage said slotted lever, an electro-magnet having its armature connected to lever d, a circuit-controller located in an electric circuit connected to the electro-magnet, and an electric generator in circuit with said electro-V magnet to remove the lever` d from engagement With'the lever as, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GEORGE L. DAMON.

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