US269862A - Chaeles temple jauksox - Google Patents

Description

(No Model.)

O. T. JACKSON.

ELEGTRIUBURGLAR ALARM.

No. 269,862. Patented Jan, 2, 1883.

l iarzzay N P TENS, Phowum m rw, wnmn mm n.c

UNrrED STATES,

PATENT FFICE.

CHARLES TEMPLE JACKSON, OF NEW YORK, N; Y.

ELECTRIC BURGLAR-ALARM.

SPECIFICATION forming part of Letters Patent No. 269,862, dated January 2, 1883.

(No model.)

To all whom it may concern:

Be it known that 1, CHARLES TEMPLE JAcK- SON, ofthe city, county, and State ot'New York, have invented an Improvement in Electric Burglar-Alarms, of which the following is a specification.

This invention belongs to that class of ap-' paratus commonly termed electric burglaralarms, and is designed to automatically give warning of the opening or breaking in of a window or door, as the case may be, by the ringing of an electric hell or equivalent sounding device, brought about by electric agency set in operation by the movement of the door or window, as the case maybe; and it comprises certain novel combinations of parts, whereby is provided a very simple and effective alarm, capable ofbeing made and applied at a low cost, and consequently within the reach of a large portion of the community to whom the expensive electric burglar-alarms as hithertoin use have been practically unavailable.

Figure l is a diagram illustrating the construction and operation of my said invention. Figs. 2 and 3 are detail views representing certain parts of the mechanism embraced in my said invention.

The apparatus is designed to be operated on a circuit comprising a single wire, as distinguished from the duplicate wires heretofore in use in the class of apparatus to which my said invention belongs.

Having reference to the accompanyingdrawings, the construction and operation of the apparatns areas follows:

K is a battery of any ordinary or suitable construction; but in practice an ordinary sulphateoficopper batteryof three or i'ourcells will be sufficient for the burglar-alarms of an ordinary dwelling. The current, having its inception at the pole K of the battery K, tollows the wire K to the point a; thence through the wire a (shown in dotted outline in Fig. 1) to the metallic conducting-standard B, whence it passes to the arm b of the armature U, pivoted at c to the upright D, the current passing from the said arm I; to the said upright D, the latter being of metal of suitable conductivity, the current then passing from said support D through the wire (1 (shown partly in dotted outline in Fig. 1) to and around the electro-magnets E,

ducted by a wire, G, to a fixed stud, g. placed below what I term an electric catch,z, the said catch being substantially a contact-spring, which, when pressed downward in contact with the stud g, connects with the wire G, and there-- by transmits the current to the wire I, which is carried around to the pole J of the battery K, the said pole J being of course the pole opposite to the pole K, from which the current started.

The catch or spring 2 is attached to the sash H of the window. so that when the latter is depressed the catch or spring 2 is pressed downward upon the stud g, so that the circuit is continuous or unbroken through the several wires and conductors hereinbei'ore described, from the pole K of the battery around to the pole J thereof, this circuit being constant and continuous when the window is closed in relation to the catch or spring 2 and wires I and G, as hcreinbefore explained.

The object of the upright B is to avoid the necessity of carrying wires direct to the upright I), the arm b being brought in contact with the said upright Dwhen-the armature itself is brought down upon the electro-magnet E.

In order that the armature may be brought within range of the attracrion'of the elecrromagnet E, its free arm or extremityis provided with a button, y, by pressing down upon which the armature will be brought in contact with the magnet and the arm I) in contact with the upright D. The connection beingestablished, as just described, the current flows, as hereinbefore explained, the arm being held down by magnetic attraction upon the magnet E, and in this case there is no connection with the electric bell shown at l, the bell, apart from the combination in which I employ it, being well known, and consequently requiring no specific description here. When the window H is raised the catch or spring z rises by its own elasticity away from the stud g, and consequently breaks the circuit hereiubefore described, whereupon the said current is caused to pursue a different circuit, which brings the 1 bell into operation. The same results follow it any of the wires forming part of the herein-' I before described circuit are severed or broken. The cessation of the current through the circuit hereinbefore described demagnetizes the magnet E, whereupon the arm b of the arma tureis withdrawn from the upright D by means of a spring, h, which causes the opposite end of the armature. to rise and come in contact with the lower end of an adjustable screw, N, which forms part of the conducting-upright M, which connects, through a wire, R, post 0, and wire R, with the bell mechanism at P, from which latter the current is conducted through a wire, S, to the pole J of the battery. A wire, T,extends from the pole K of the battery to a post, L, from which extends a wire, U, to the upright D, so that the current passes lrom the pole K of the battery to the post L, and follows the wile U, u 'iright l), armature U, post M, wire 1%, post 0, wire R,and thence through the bell mechanism P, through the wire S, back to the battery, which said bell continues to ring so long as the current remains on this circuit-in other words, so long as the wire of the first circuit remains broken or severed, or operatt d by the lifting of the window or otherwise.

It is of course to be understood that the spring or catch z and the stud g or adjacent end of the wire Gr may be arranged in such relation with a door that the opening of the door will release the stud or spring, thereby breaking the tirst or silent circuit and throwing the current into the second or signal circuit, through which the bell mechanism P or like sounding mechanism is actuated.

Vhat I claim as my invention is In an electric burglar-alarm, the combination of a battery, K, and wire K extended from one polethereof to a conducting-upright, B, a conducting-standard, I), connected by a wire, a), with the electro-magnet E, the armature U, pivoted to the standard D, and having an arm, 1), arranged coincident with the upright B, a spring, h, for attracting the arm b from the upright B, a wire or wires, U '1, connecting the upright D with the pole K of the battery, a standard, M, arranged coincident with the outer or free arm of the armature O, and connected by a wire or wiles, R R, with an electric hell or sounding apparatus, P, a wire, S, connecting said sounding apparatus with the pole J of the battery, a wire or wires, 00 G, extending from the electro-magnet to the frame of the door or window, and having its extremity forming a stud or contact part, {1, a spring or catch, .2, coincident with the sash H of a window, or with the corresponding portion of a door, as the case may be, and also coincident with the stud or terminal point g of the wire G, and the wire I, extending from the spring or catch 2' to the pole J of the battery, the whole constructed, combined, and organiZed for joint use and operation substantially as and for the purpose herein set forth.

CHARLES TEMPLE JACKSON.

Witnesses:

THOMAS E. OROSSMAN, RUDoLF H. BJILLMAN.

Images