US856921A - Electric fire-alarm. - Google Patents

Description

PATENTED JUNE 11, 1907.

I. M. SIMONS.

ELEGTRIG FIRE ALARM.

APPLICATION FILED FEB. 26, 1907.

51 11mm kw I e 3m;

UNITED s rirrns rairnivr curren- ISAAC M. SIMQNS, OF YUUNGSTQWN, OHIO.

lRE ALAE lMQ Specification of Letters Patent.

Patented June 1&3?

Application filed February 26, 3.907. Serial No. 359,364;

. tornatically sounding an alarm and indicating the location of a fire; and it has particular reference to that class of fire alarms'which include a readily fusible strip of soft metal which, when fused by an abnormal or unusual rise in temperature, will release a spring actuated 'lcver-tl'iat serves to close an electric circuit including an alarm bell which is sounded by the closing of a circuit.

The present invention is specially adapted to buildings, such as hotels, where a la s c number of rooms or apartments are electric ally connected with a central station, such as the oilice, where an annunciator is located, and the invention has for its object to indicate, through the medium of the annunciator, the exact room or apartment where an incipient lire is under way.

Further objects of the invention are to simplify and improve the construction. and

operation of this class oi devices. I

lVith these and other ends in view which will readily appear as the nature of the invention is better understood, the same consists in the improved construction and novel. arrangement and combination of parts which will be hereinafter fully described and particularly pointed out in the claims.

In the accompanying drawing has been illustrated a sim le and preferred form of the invention; it eing, however, understood that no limitation is necessarily made to the recise structural details therein exhibited, ut that changes, alterations and. modifications within the scope of the invention may be resorted to when desired.

In the drawings: Figure 1 is a diagram matic view showing an annunciator, a circuit closing mechanism, an electric bell, and the connecting circuit. Fig. 2 is a detail plan view showing a portion of the circuit closing mechanism.

Corresponding parts in both figures are denoted by like characters of reference.

' An annunciator A of ordinary construction is arranged in a suitable location, such as the office of the particular building where the invention is installed, said annunciator being in line wire G.

, I electrical communication with. the several rooms or apartments of the hotel or building which are designated, upon the annunciator by numbers, in the usual manner; An elec tric bell B is suitably arrangedin proximity to the annunciator.

In each room'or apartment is arranged a circuit closin device C of special construction. in 88401- room or apartment is also located an ordinary circuit closing device ineluding a pressure button D and a contact member it which. are respectively connected with the line wires F and @of a circuit i.ncluding the annunciator A, the bell B and a battery H.

The special circuit closing device C includes base 1 having posts or uprights 2- and 3, the former of which supports a horizontally disposed arm 4 having at its outer end a binding screw 5 which is connected with one end of aconductor such as a wire 6, the opposite end of which is connected with the line wire F; the inner end of the horizontal arm 4 is provided with a V-shaped notch 7. Pivotally supported upon the base 1, intermediate of the posts 2 and. 3, is a rocking U-shaped lever 8, said lever being preferably supported upon a lug 9 having a binding screw 10 and connected by said binding screw with one end of a conductin wire 11, the other end of which is connecte with the A spring 12 connects one end ,of the lever 8 with the post 5; the tendency oi said spring being to draw the lever into ou gagement with the notch 7 of'the arm 4. The

opposite end. of the lever 8 has a binding screw 13 and another bindin screw 14 is an ranged at the upper end of t 1e post 3. The

latter is connected with the lever 8 by means of a strip 15 of readily fusible material, secured by the binding screws 13 and 1;,

andv whereby the spring 12 is put under tension and the armof the lever 8 adjacent ito the post 2 is held normally out "oi contact with the arm 4.

A sudden abnormal or unusual rise of temperature in the apartment where the device 0 is located will fuse the strip 15 upon which the lever.8 will be rocked by the action of the spring 12, placing one arm of said lever in di rect contact with the arm into the V-sha ed notch 01" which the arm of the lever wil be iniallibly guided, thus com leting the circuit and causing the bell B to e sounded while the location of the device C, the strip 15 of which is fused, will be indicated upon the an" nunciator. The bell will continue to sound until the circuit is broken.

This im roved device, as will be seen, is very simp e in construction, and it may be readily installed, at a comparatively trifling expense, in any establishment that is already equipped with-the electric annuncia tor. One or more of the devices may be arranged in difierent locations in each room or apartment if this should be considered necessary or desirable in order to insure complete protection.

By this device the exact location of an incipient fire will be indicated, and destructive confiagrations may thus frequently be avoided.

Having thus fully described the invention, what I claim as new is:

1. In a device of the class described, a circuit closing device including a base, posts or uprights upon the base, a horizontally disposed arm upon one of the posts, a U-shaped ever supported upon the base intermediate of the osts, a traction spring connecting one arm or the lever with the post having the horizontal arin, a readil fusible stri connecting the other arm 0 the lever with the opposite post ,and electric conductors connecting the horizontal arm and the U-shapcd lever respectively with the line wires of a cirincludingan annunciator and an electric 2. In a device of the class described, a circuit closing device comprisinga base having posts or upri hts, a rocking member supported pivota y upon the base intermediate 'of the posts, a spring connecting the rocking member with one of the posts, a readily fusi and having a terminal V-shaped notch adapt' ed to receive the rocking member, and conductors connecting the horizontal arm and the rocking member respectively with the line Wires of the circuit including an annunciator and an electric bell.

3. In an electric fire alarm, an annunciator and an electric bell located at a central station, a circuit closing device such as. a pressure button arranged in an apartment distant from the central station, lme wires connecting the contact members of the circuit closer with an electric circuit includin the annunciator, .the bell, and a battery, an a' special circuit closing device-disposed in the apartment where the pressure button is located and including a pair of posts 01' uprights, a rocking member supported pivotally between said posts or uprights, a spring connecting the rockin member with one of the posts, a horizontal y disposed arm su ported by said post and having a termina notch ada ted to receive the rocking member a rea( ily fusible strip connecting the rocking member with the other post, and electric conductors connecting the horizontal arm and the rocking member respectively with the line wires of the circuit including the annunciator, the bell and the battery.

In testimony whereof, I allix my signature in presence of two witnesses.

ISAAC M. SlMONfp.

Witnesses W. R. STEWAR'J, NELLIE A. SHERIDAN.

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