US788195A - Fire-alarm. - Google Patents

Description

10.783,195, PATENTED APR. 25, 1905. P.H.EAT0N.

PIRE ALARM.

APPLIGATION FILED JUNE 27. 1904.'

/MIZ/ By f U Attorneysv Patented April 25, 1905.

PATENT OEEICE.

PERCY HAVELOOK EATON, OF NEWCASTLE, CANADA.

FIRE-ALARM.

SPECIFICATION forming part of Letters Patent No. 788,195, dated April 25, 1905. Application filed June 27, 1964. Serial No. 214,316.

To @ZZ whom, 7215 pta/,y concern:

Be it known that I, PnReY HAvELoeK EATON, a subject of the King of England, residing at Newcastle, in the county of Northumberland, Province of rNew Brunswick, Dominion of Canada, have invented certain new and useful Improvements in Fire-Alarms; and I do hereby declare that the following is a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to new and useful improvements in automatic {ire-alarm and indicating apparatus, and especially to means which may be connected with an indicator which carries an alarm to be sounded when the temperature in the various rooms of the building which are equipped with my invention rises to a degree sufiicient to melt or sever connections which will cause a longitudinal movement to be imparted to a reciprooatory alarm-sounding means, which may be connected with the indicating apparatus, all as hereinafter more fully described, and specilically set forth in the claims.

The object of the invention is to provide an apparatus of that class which may be installed in a building, the said apparatus consisting of an indicator and alarm mechanism which is so connected with fusible, combustible, or expansible means adapted to be operated upon by heat to sound an alarm and at the same time indicating in which of the apartments the fire is located.

Referring to the annexed drawings, in which similar numerals of reference indicate corresponding parts in all the views, Figure 1 is a diagrammatic illustration of the apparatus connected with an apartment of a house. Fig. 2 is a broken elevational View of the indicator-case and alarm mechanism; and Fig. 3 is a vertical sectional view taken centrally th rough the case of Fig. 1, with the alarm-bell shown in full lines.

In the drawings, 1 indicates generally a room or compartment of a house which is provided with a securing-hook, as 2, with which may be connected the cord 3, which cord extends across the room and passes over the pulley 4 at the opposite side thereof in close proximity to the ceiling 5 of the room. This cord extends from the pulley 4 around the pulleys 6 and 7 and thence upwardly, where it is connected with one of the spring-actuated reciprocatory members 8, hereinafter more fully described. As the object of the invention is to provide releasing means which will sound an alarm and indicate thelocation of a rise in temperature, it is evident in place of the cord 3, which is shown, a wire or cable or other equivalent means, which is expansible under the influence of heat, may be substituted for the cord and answer the same purpose, or, if desired, sections of metal or other non-combustible material may be connected by means of fusible connections which will melt under the influence of heat and permit release of the reciprocatory members 8, and it will be understood that any of such materials will be within the spirit of the invention and included within the following claims.

The alarm mechanism includes a casing 9, which is adapted to be secured to a wall of the building, and mounted upon the casing 9 is an alarm-bell 10, coperating with which is a plunger 11, adapted to impinge the bell when desired for the purpose of sounding an alarm. This bell is mounted upon the base 12, as shown, and is connected thereto by means of the central spindle 13 and thumb-nut 14. Within the casing 9 is a plate 15, which is hinged at 16, as shown, and is supported in position below the plunger 11 by means of the stop 17, which prevents the plate 15 dropping below a predetermined level. The lower wall 18 of the casing 11 is perforated, there being a plurality of such perforations in said wall, one being provided for each of the reciprocatory members 8. Passing through the perforations in the lower wall are recprocatory members 8, which are perforated, as shown in Fig. 3, and through the perforations 19 thereof are projected spring-actuated rods 20, which are connected with' the sleeve 21, mounted upon the shaft 22. Each of the sleeves 21 has connected with it a coiled spring 23, the opposite end of said spring being connected with the block 24, and the-tendency of such spring is to project the pins 2O upwardly-that is, to gbe position indicated by the dotted lines in As before stated, the cord 3 is connected at one end within the room and, *passing over suitable guide-pulleys, is connected at its opposite end with the reciprocatory members 8, such cord being of such length as to hold the members 8 in the position shown in full lines in Fig. S-that is, in such position that tension is applied to the spring 23, so that in case the cord is severed such spring will project the member 8 upwardly within the casing 9. The members 8 are provided with upwardly-extending portions 8a within the casing, which are adapted to strike the plate 15 when carried upwardly by the pins 2O to the position indicated by the dotted lines in Fig. 3, at which time such plate 15 will impinge the plunger 11, thereby sounding an alarm, and it will be evident that if sufficient increase of temperature occurs within an apartment of a building equipped with the invention to expand the cord 3cr fuse a connection interposed between sections thereof or consume such cord the members 8 will be released from the tension of the springs and be violently projected against the plate 15, whereupon the bell 10 will be sounded to give an alarm. For the purpose of indicating the particular apartment or room in which the fire is located cross-arms 24C are connected to the members 8, said cross-arms carrying the indicating-plates 25, which plates are guided between the forward plate 9 of the casing 9 and the vertically-extended guide members 26, connected therewith. Ports 27 are provided in the face-plate 9, and numerals or other indicating-marks are placed upon the members 25, so that when an alarm is sounded an inspection of the indicator will determine the location of the fire.

It will be evident that as many cords 3 as there are rooms to be equipped with the apparatus should be provided, and connected with each cord there should be one of the reciprocatory members 8 and indicator 25.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s-

1. In a fire-alarm apparatus, an indicatorcase, an alarm connected therewith, a plunger, a plate adapted to impinge said plunger, a spring-actuated reciprocatory member normally out of con tact with said plate and adapted to forcibly engage and move said plate and force it against said plunger, and means for holding said reciprocatory member normally out of contact with said plate.

2. In a fire-alarm apparatus, an indicatorcase, an alarm connected therewith,a plunger, a hinged plate normally out of contact with said plate and adapted to forcibly engage and impinge said plunger, a spring-actuated reciprocatory member adapted to move said plate and force it against said plunger, and means for holding said reciprocatory member normally out of contact with said plate.

3. In a lire-alarm apparatus, an indicatorcase, an alarm connected therewith, a plunger, a plate adapted to impinge said plunger, a spring-actuated reciprocatory member normally out of contact with said plate and adapted to forcibly engage and move said plate and force it against said plunger, and combustible means for holding said reciprocatory member normally out of contact with said plate.

4. In a fire-alarm apparatus, an indicatorcase, an alarm connected therewith, acontact member coperating with said alarm, a plurality of reciprocatory members normally out of contact with said member, and an interposed member adapted to be forced into engagement therewith to sound an alarm, actuating-springs therefor, indicators connected with said reciprocatory members, and means for holding said reciprocatory members normally in a retracted position.

5. In a fire-alarm apparatus, an indicatorcase, an alarm connected therewith, a contact member coperating with said alarm, a hinged plate adapted to impinge said contact member, reciprocatory members normally out of engagement with said hinged plate and adapted to be forcibly engaged therewith, springs coperating therewith, cross-arms connected with said reciprocatory members, and indicators carried by said cross-arms.

6. In a fire-alarm apparatus, an indicatorcase, an alarm connected therewith, acontact member coperating with said alarm, a hinged plate adapted to impinge said contact member, perforated reciprocatory members normally out of contact with said hinged plate and adapted to be forcibly thrown into direct engagement therewith, springs coperating therewith, cross-arms connected with said reciprocatory members, and indicators carried by said cross-arms.

In witness whereof I have hereuntoset my hand in the presence of two witnesses.

PERCY HAVELOCK EATON.

Witnesses:

J. R. LAwLoR, J. BRooKs.

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