US469648A - Fire and burglar alarm - Google Patents

Description

(No Mofll.) 2 Sheets-Sheet 1..

TQJ. GORDON. FIRE AND BURGLAR ALARM. No. 469,64 Patented Feb. 23. 1892. KER

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Patented Feb. 23, 1892.

UNITED STATES PATENT OFFICE.

THOMAS J. GORDON, OF EUREKA SPRINGS, ARKANSAS, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, OF TVVO-TI-IIRDS TO ROBERT L. MEADOR, OF SAME PLACE, AND GEORGE IV. FINN, OF MUNDELL, ARKANSAS.

FIRE AND BURGLAR ALARM.

SPECIFICATION forming part of Letters Patent No. 469,648, dated February 23, 1892.

Application filed September 4, 1891. Serial No. 404,770. (No model.)

T 00 whom it may concern: with an eye, through which is passed the wire Be it known that I, THOMAS J. GORDON, a or cord (J. citizen of the United States, and a resident of To each window-casing, just above the up- Eureka Springs, in the county of Carroll and per edge of the lower sash, is secured a small 5 State of Arkansas, have invented certain new arm or lever E, pivoted at its center. One

and useful Improvements in Fire and Burglar arm 6 of this lever is adapted to be turned 5 5 Alarms; and I do declare the following to be into position to be engaged by said sash when a full, clear, and exact description of the inraised and the other end or arm 6 is provention, such as will enable others skilled in vided with a small hook, which, when the to the art to which it appertains to make and use alarm is set, engages an eye f on a wire or cord the same, reference being had to the accom- F, which at its upper end is connected to the panying drawings, and to letters of reference opposite arm of the lever D. It will theremarked thereon, which form a part of this fore be seen that when any window is raised specification. the cord F will be pulled downwardly, slack- I 5 Figure 1 of the drawings is a representation ing the tension of cord O. hen the alarm of the alarm and is a diagrammatic view. is not set, the hook and eye are disconnected. Fig. 2 is a perspective view of the connecting Connection may be made with both sashes, if mechanism over the door. Fig. 3 is a detail desired. View, enlarged, of same. Fig. 4 is a view of For each door I secure to the casing by a 20 the mechanism as arranged on windows. Fig. central pivot an angle iron or lever G, to one 5 is a face View of the alarm. Fig. 6 is a detail arm of which is fastened a cord H, connected View of one of the connecting-levers. to one arm of the angle-lever D. The other This invention has relation to certain new arm is adapted to be turned down when the and useful improvements in burglar and fire alarm is set in front of the door. WVhen the 25 alarms; and it consists in the novel construcdoor is opened, said arm will be engaged tion and combination of parts, as hereinafter thereby and the cord H pulled, causing the described, and pointed out in the claims. slacking of the wire or cord 0. When not in In the accompanying drawings, illustrating use, the angle irons or levers may be turned the invention, the letter A designates the inup out of the way. In connection with these 0 terior of a room or building, to which my inlevers G, I may employ two small angle-springs vention is shown as applied. G, which, when the door is opened, will hold In putting my alarm into operation I first said levers back, and which will hold them take a spring, such as that shown at B, and again in operative position when the door is secure it to the wall of a room or building at closed. These two springs are secured to the 5 one end thereof and near the ceiling. This casing just under the lever Gone on each spring may consist of a piece of Wire bent to side of the lower arm thereof. The shorter .85 form an eye or coil, having the diverging arms of said springs extend toward each other arms a a. On the end of the arm or is an and come nearly together at their free ends. I eye o to which I secure one end of a cord or When the door is opened, it will engage said 40 wire O, which runs the length of the room or arm of the lever, forcing it through between building to the opposite end or to wherever the ends of the springs and holding it there 0 desired, and is connected to an eye or screw until the door is closed, when it will be again I), said cord running over anti-friction pulleys pushed back inside of said springs. w herever necessary. The springB is arranged I will now describe the alarm, which is 10- 45 so that its tension will normally hold the cord cated at any desired point in the building.

or wi 0 mm, Inclosed in a suitable box or case is a spring 5 Over each door or window I provide an aroand pinion-gear K with winding mechanism shaped lever D, pivotally secured at its cen- 70, similar to that employed in clock-work, proter and having one of its arms cl provided vided with an escapement J to which is connected a bell-hammer, which under the movement of said escapement sounds a bell L. M is a bail-lever device pivoted within said casing and having an arm m, which projects therethrough and is connected with a cord or wire N to the main wire 0. At the opposite end of this bail device is an arm n, which, when the arm m is pressed or held forward, engages the stem of the bell-hammer, throwing the escapement out of gear and preventing the sounding of the alarm, said stem in such position being'held between the arm n and the post P. The tension of the wire or cord 0 is sufficient to normally hold this lever forward and prevent the alarm from sounding. When, however, a sash is raised or a door opened and the tension relaxed, a spring presses against said bail device, throwing it backwardly, and the alarm is sounded. It will be seen, moreover, that if a fire breaks out in the building, as soon as the flames reach the cord between the attaching-spring B and the alarm, said cord, if of inflammable material, will be burned in two, thus releasing the tension and sounding the alarm. A connection R may also be made between the doorbell knob at the door and said alarm to be used as an ordinary door-bell. It may also be connected with and operated, by push-buttons. These alarms may be conveniently carried and put up temporarilybytraveling men or others stopping at hotels or boardinghouses, requiring but a few screws and a few moments time.

The cords O, F, and B may be made of any ing and having one of its arms flexibly connected with an arm of the lever D and the other arm arranged to be engaged by the opening of the door, and the device; for holding said lever G, substantially as specified.

2. In an alarm device, the combination, with the alarm and the tension-cord, of a. lever G, pivotally secured tolthe casing of each door and having a flexible connection with said cord, said lever having an arm arranged to be engaged. by the door when opened, and the angle-sprin gs G, secured to the casing"- and operating, as described, to hold said lever in position, substantially as specified.

In testimony whereof Iaflix my signature in presence of two witnesses.

THOMAS J. GORDON.

Witnesses:

WILLIAM R. NIOHOLES, ROBERT L. SMITH.

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