US1051133A - Fire and burglar alarm. - Google Patents

Description

C. LIACI.

FIRE AND BURGLAR ALARM. 0 APPLICATION FILED SEPT.11,1911. 1,051,133, Patented Jan.21, 1913.

2 SHBETSSHEET 1.

J J Witnesses lllhlkg/y Attorneys Witnesses 0. LIAGI. FIRE AND BURGLAR ALARM.

APPLICATION FILED SEPT. 11,1911.

1,051,133, Patented Jan.21, 1913.

2 SHEETS-SHEET 2.

' 7 5 flaw/ally;

Inventor W by Atto r n eys COSMO LIACI, 0F NEW HAVEN, CONNECTICUT.

FIRE AND BURGLAR ALARM.

Specification 01 Letters Patent.

Application filed September 11, 1911.

Patented Jan. 21,1913.

Serial No. 648,622.

To all w/tom z't may concern:

Be it known that I, Cosmo LIAGI, a citizen of the United States, residing at New Haven, in the county of New Haven and State of Connecticut, have invented a new and useful Fire and Burglar Alarm, of

which the following is a specification.-

This invention relates to an improvement in fire and burglar alarms, the primary object of the invention being the provision of a fire and burgla-r.alarm,swhich dispenses with the electric wiring about a building, and which is provided with switch mechanism adapted to be operated one at a time or in series, but employing the same electric circuit and alarm.

A further object of the invention is the provision of aswitch, which as it forms a contact, sets the alarm, simultaneously giving a visual indication as to the location of the fire or burglar.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details-of construction hereinafter described and claimed, it being understood that changesin the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

In the drawings :--Figure 1 is a front elevation of the casing containing the switches and alarm, the electrical circuit being shown in diagram. Fig. 2 is a vertical section thereof. Fig. .3 1s a cross-section taken on line w m, Fig. 2 looking in the direction of the arrow. Fig. 4 is a perspective view of two movable switches and their adjacent parts. Fig. 5 is a diagrammatic view showing the system as applied to a door. Fig. 6 1s a diagrammatic view upon a reduced scale of the electrical circuitemployed with this a pa'ratus.

Re erring to the drawings, 1 designates the casing, which is placed upon .the wall in a conspicuous place, and carries the alarm 2,'the cut-out switch 3, and the light 4-, allof which are connected in the electrical circuit 5 shown in diagram, Fig. 1. Also connected in this circuit and mounted transcircuit is closed, t

versely of the casing, are the cylindrical rods 6, which will be arranged in any numbers according to the number of rooms to be protected. In this instance, two are shown.

lt/lounted in the casing in the rear and parallel to the rods 6, are rods 7, upon which are spaced and pivoted the switch plates 8, each one of which is provided with the right angled outer end 9, and the large circular opening 10. This opening 10, it will be noted, surrounds the rod 6, and is of suificient diameter to permit the move-' ment or the switch plate in two directions,

and is normally disposed so that the rods 6 are not engaged by the metal of the switch plate surrounding the openin 10.

To normally hold the switch plates so that the rods 6 are central of the openings 1 O,-the springs 11, are provided, their'tension pulling the plates downwardly, while the taut strings or fusible cords l2,engage the plates from the other side and are tightened to hold the switch plates in the position as shown in Fig. 2.

In the front of the casing and disposed directly in front of the right-angledends of the switch plates are opaque strips 13, on the lower edge of each of which is printed the word Fire, and on the upper edge of which is printed the word Burglar, and upon the outer faces of these right-angled ends are numbers or letters, to indicate the location of the trouble, these letters being so arranged that in case of fire and one of the cords is broken by burning, the spring will operate its switch plate, the cord thus relieving the plate, and the number projecting below the strip 13, as shown in Fig. 1 to indicate the location of the fire. On the other hand, should the cord be pulled upon, the switch plate connected therewith would be pulled up, closing the circuit, ringin the alarm and indicating the number 0? the room enteredby the burglar, as shown in the lower strip 13 of Fig. 1. In .both cases when the switch late engages the rod 6, a

he alarm is run the light is on, and coincident therewith, tie location of the fire or burglar is shown at the casing.

If the pull of the cord 12 is only momentary but of a suilicient distance to move the alarm 2.

switch so that the wall of its aperture 10 will be placed into contact with the rod 6, the size of the aperture 10 being made small enough so as to only require a slight movement of the switch to close the circuit, the alarm will be actuated at the same time giving a visual indication, any form of catch device being employed to hold the switch closed and exhibit the signal 19.

The electrical circuit closed by the movement of the switch plate 8, in either direction is clearly shown in diagram in Fig. 6. When the metal about the opening 10 of the plate 8, engages the metallic rod 6, a circuit is closed through the wire 14:, the incandescent li ht 4, wire 15, batteries 16, wire 17, manna ly operated switch 3, wire 18, the alarm 2, wire19, the rod 7, and switch plate 8. Thus the alarm is given, and a lamp is lighted simultaneously, in order that the indicator carried upon the plates 8, or operated thereby may be seen, and the trouble located.

In Fig. 5, the apparatus is illustrated as a simple burglar alarm, the cord or string 12,-

bein connected to a door, or other closure, 20,t e switch plate 8, being: made similar to those just described, and so mounted that a release of the cord 12", will permit the spring 11, to close the switch, or that a pull upon the cord12, will pull the spring and bring the switch into circuit closing position. Should the cord 12' be cut or broken, the spring 11, will actuate the switch plate 8', to close the circuit and thus ring the From the foregoing description, it is evident that I provide a combined fire and burglar alarm system. in which a'novel form of switch is employed, to be either operated by a pulling action'upwardly or a pulling action downwardly, and a system by the means of which the usual circuit wiring 'to the various parts of a building, is entirely eliminated, fusible or breakable cords-being used in lieu thereof, thus permitting the electrical circuit, containing a manually operatedswitch, an incandescent light, an alarm, and either one, or series, of indicating switches, to be bodily carried by the casing at the desired point of vantageinthe buildmg. I

By means of the manually operated switch. 3. the electrical circuit may be cut out at any time, as for instance during theday time, the apparatus, being placed in onerable condition, simply .by closing this switch.

What is claimed, is

1. In a fire and burglar alarm system. the combination of an electrical circuit. a single rod in said circuit, one or more switches in said circuit and in operative relation to said rod, each one of said switches being provided with an opening of larger diameter than the rod through which the rod passes, and two co-acting means normally holding. said switches so that the rod is substantially in the center of the opening. andout of contact with the switches, as and for the purpose set forth.

2. In a fire and burglar alarm system, the combination of a casing, a series of rods mounted therein, another series of rods also .mounted thereinandinsulated from the first series, a series of plates pivotally mounted upon the last mentioned rods and provided with an opening in each of a larger diameter than the first mentioned rods, said first mentioned rods passing through said openings and being normally out of engagement with the plates, two oppositely tensioned means engaging each plate and normally holding the plate out of engagement with said firstmentioned rods, and an electrical circuit including an alarm containing the two series of rods and the plates, for the purpose set forth.

3. In a fire and burglar alarm system, the combination with an electrical circuit containing an alarm, of a pivoted switch in said circuit and-provided with an aperture therein, a rod also in said circuit and adapted to pass through the aperture of the switch without engaging the switch, a spring for normally pulling the switch toward the rodf and a flexible connection exerting a pull uponthe opposite side of the switch to normally hold the switch out of contact with the rod.

i. In a fire and burglar alarm system, the combination with an electrical circuit containing an alarm, of a pivoted switch in said circuit and provided with an aperture through the body thereof, a rod also in said circuit and ofa smaller size than the aperture of the switch, said aperture fitting over the rod, a spring engaging the switch, and flexible connection also connected to the switch upon the opposite side to the spring, said spring and connection normally holding the switch out of contact with the rod.

5. In a fire and burglar alarm system, the combination with an electrical circuit containing an alarm, of a pivoted plate insaid circuit provided with an aperture in the body thereof, a co-acting circuit closing means disposed in the aperture of the plate and normally out of contact with the plate, and two oppositely pulling means engaging the plate and holding said plate out of contact with said co-acting circuit closing means.

6. A circuit closing means for a fire and burglar alarm system, comprising a plate having pivotal connection at one end, said plate being provided with an aperture intermediate of its ends, a rod mounted fixedly and passing through but out of contact with the walls of the aperture of the plate, a

spring for normally pulling. the plate upon In testimony that I claim the foregoing the rod, and a flexible connection engaging as my own, I have-hereto afiixed my signathe plate forv normally pulling the plate ture in the presence of two witnesses.-

from the opposite direction to the spring COSMO LIACI. 5 and upon the rod, the spring and flexible Witnesses:

connection normally holding the plate out SALVATORE GORGIULE,

of contact with the rod. DOMANICO PISANI.

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