US1265472A

US1265472A - Combined burglar or fire alarm.

Info

Publication number: US1265472A
Application number: US10935316A
Authority: US
Inventors: Carey T Matthews
Original assignee: Individual
Current assignee: Individual
Priority date: 1916-07-14
Filing date: 1916-07-14
Publication date: 1918-05-07
Anticipated expiration: 1935-05-07

Description

C. T. MATTHEWS.

COMBINED BURGLAR. 0R FIRE ALARM APPLICATION FILED 1uLY14. 916.

Patented May 7,1918.

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APPLICATION FILED JULYH. 1916.

Patented May 7,1918;

Q. T. MATTHEWS. COMBINED BURGLAR 0R FIRE ALARM.

APPLICATION HLED JULYH, I916- L265A'72. Patented May 7,1918.

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comamun nunemn on. Fran an To all whom it may concern:

Be it known that I, CAREY Ma rrnnws, a citizen of the United States, residln at Kennebec, in the county'of Wake and tate of North Carolina, have invented new and I useful Improvements in Combined Burglar or Fire Alarms, of which the following is a specification.-

This invention relates to a comblned burglar and fire alarm system which has for its primary object to s1gnal a remote person, such as a telephone operator at a central office, that danger threatens a certam buildin so that the proper authoritles can be noti ed.

An object of the invention is the use of a plurality of signal devices having different signaling characteristics so as to distlnguish for example between a fire alarm and a burglar alarm.

Another object of the inventlon is the use of a system so constructed that the same may be connected to the usual telephone line.

Besides the above my invention is distinguished in the novel manner of associating an indicating apparatus with the signaling system so that an indication will be given if the signaling system is not properly set.

With these and other objects in view the invention will be better understood from the following detailed description taken in connection with the accompanying drawings, wherein Figure 1 is a side elevation of the cabinet with the cover removed.

Fig. 2 isa top plan view thereof.

Fig. 3 is a plan view of the indicator.

Fig. 4 is a diagrammatic view of the entire system.

Fig. 5 is a diagrammatic view of the in dicator.

Referring more particularly to Fig. 4 of the drawings the letter A designates a well known form of telephone system including a transmitting circuit 1 and a receiver 2.

In this particular instance I have shown my alarm system as connected to the line wires 3 of a telephone apparatus and using an auxiliary transmitter circuit 4 instead of the transmitter 1, but I wish it to be understood that the transmitting circuit 4 may be dispensed with and the transmitter 1 used dethe telephone apparatus is to be constructed as a unitary article or my apparatus used as Specification of Letters Patent. at t m 7, 91 Application filed July 1a, 1916. Serial no. 109,953.

an independent apparatus. In the particular showing I have shown the above parts arranged in the cabinet 5 havin a door not w bell is arranged in a similar circuit 11 includin a source of current 12. Arranged to bri ge the circuit 9 is a contact strip 13, while a similar strip 14 is arranged to close the circuit 11.

Arranged to bridge the distance between the conductors 15 and 16 of the secondary circuit of the transmitter 7 are contact strips 17 and 18 adapted to move into engagement with

contacts

19 and 20 connected directly to-the conductor 15. Also associated with the contact strip 13 is 'a contact strip 21, while similarly associated with the contact strip 14 is a contact strip 22 for the purpose hereinafter described. Arranged to give movement to the

contact strips

13, 17 and 21 closed position by the movement of the bolt of the look.

A circuit breaker 32 is arranged to break the circuit 27 and consists of an electromagnet 33 acting upon an armature 34 which cooperates with a pivoted arm 35 to form a portion of the circuit 27 with the result that when the armature is attracted and the arm'35 free to rotate about its pivot, the circuit will be broken. To insure the opening of the circuit by the circuit breaker, I mount in the circuit 27 a switch 36 arranged to be opened by the impact of the closer 39 normally assuming a position to open the circuit 37. The heating element of the thermostat 39 is in the form of a coil 40 arranged in series in the circuit 27.

From this latter arrangement it Wlll be seen that upon closing of the circuit 27 and the passage of current therethrough, the coil 40 will heat the thermostat 39 with the result that the same will move to a position to close the circuit 37.

Upon this action taking place the magnets are energized which in turn attracts the armature away from the arm and breaks the circuitat this point. Upon the arm reaching an inactive position the SWItCh 36 will be opened and thus the opening of the c11 cuit 27 is insured. Tapped on to the circu t 27 is a conductor 41 having arranged therein the magnet 26 and the heat actuated circuit closer 42 the circuit 41 being normally broken at this point.

Bridged across the circuit 27 so as to short-circuit the circuit closer 28 and switch 29 is a conductor 43 normally broken and this break is adapted to be bridged by the movement of contact strip 21. A conductor 45 cotiperates with the contact strip 22 to accomplish the same purpose with the break 44 and heat actuated-circuit closer 42.

As far as I have proceeded it will be seen I that when a burglar operated device is set into operation or the fire device set into operation, a circuit will be closed for energizing either of the magnets 24 or 26 and the continuity of this circuit is controlled by the circuit breaker 32. Upon current flowing through either of the magnets 24 or 26 a predetermined interval, enough heat Will be generated by the coil 40 to actuate the thermostatic circuit closer 39. When this takes place the circuit breaker 32 will operate and prevent further current consumption.

From this arrangement it will be seen that sound waves of different characteristics .can be passed over the line wires 3 of the telephone set for giving signals to the operator at central ofiice so that she may notify the proper authorities.

I have shown illustrated with my alarm system an indicating system by means of which communication will begiven when the different circuit closers in the alarm system are not properly set.

Referring to Fig. 4 ofthe drawings it will be seen that this system consists of an electric magnet 46 arranged in a normally open circuit 47 having arranged therein a source of current 48. The terminals of the circuit at the break therein are connected to spaced contacts 49 arranged for instance in the key hole 50 of a look so that upon the insertion of a key, the distance between the contacts 49 may be bridged. Associated with the magnet 46 are normally engaging contact strips 51 and 52 adapted to be disengaged by energization of magnet 46 and closing the break in the partial circuit 53 that connects the door operated circuit closer 54 and the ,key operated switch 55 with binding posts 56 and 57 that, are in turn properly connected to the alarmsystem, partial circuit 53 thus being bridged across the portion of circuit 27 including the circuit closer 28 and switch 29. It will be seen from the drawing that circuit closer 54 and switch 55 are adapted to operate in a similar manner to circuit closer 28 and switch 29.

Associated with the contact strip 51 and adapted to be brought into engagement therewith by energization of magnet 46 is a third contact strip 58 forming the terminal for a conductor 59 which is arranged to bridge across the conductors forming the partial circuit 53 to one side of the circuit closer 54 so that if the circuit closer 54 is in closed position, current will flow from the battery 60 through a bell 61 arranged in the conductor 59. It will be observed that upon connecting contacts 49 as for instance by the insertion of a key in locking up a building, magnet 46 will be energized, thereby interrupting the circuit including circuit closer 54, switch 55, and magnet 24. Circuit closer 54 will be simultaneously connected to the circuit of the indicator or bell 61, and if in operative positlon due to an open position of a window or door to which it may be attached, bell 61 will be sounded. By this latter arrangement it will be seen that I am able to accurately indicate at any point if any of the windows ordoors of the building are in open position, it being understood that a plurality of the circuit closers 54 may be substituted for the single one illustrated in the drawings.

It is to be understood that while all the several features of my improved system have special cooperation with one another and together constitute a particularly effective system for the purpose in view, certain of these features may be applied in other relations, and I therefore desire to cover the combination present in the several parts of my improved system whether employed in the general organization shown or else for closing said circuit of the signal, a normally open circuit for said magnet, and a circuit closer adapted to close said circuit of said magnet, a second magnet having a circuitadapted to be closed by a manually actuated switch, said second magnet adapted when energized to disconnect said circuit closer from the signal circuit magnet and to connect said circuit closer to said indicator.

2. In combination, arnormally open circuit, heat actuated means for closing said circuit, electromechanical means for prolonging such closure, electrothermal means for opening said circuit after an interval of time, and electromechanical means for rendering such opening permanent; a circuit adapted to be closed by current flow in the first mentioned circuit and including a signal device; a second circuit. adapted to be closed by current flow in the first mentioned circuit and containing a sound transmitting device; and line wires connected to said sound transmitting device.

3. In a building protective system, a circuit including a circuit closer adapted to be actuated by an intruder, distinctive signal means adapted to be actuated by closure of said circuit; a circuit including a heat actuated circuit closer, distinctive signal means adapted to be actuated by closure of the second mentioned circuit; electromechanical means for prolonging the closure of said circuits, automatic means for opening said circuits after a desired interval of time, and automatic means for making such opening permanent; line wires, and a transmitter adapted to send such distinctive signals over said line wires.

4. In a building protective system, a circuit including a circuit closer adapted to be actuated by an intruder, signal means adapted to be actuated by closure of said circuit, a circuit including a heat-actuated circuit closer, and signal means adapted to be actuated by closure of the second mentioned circuit; electro-mechanical means for prolonging a closure of said circuits, automatic means for opening said circuits after a closure of a predetermined duration, and automatic means for rendering such opening permanent; a line circuit, transmitting means for said line circuit, and means in each signal circuit operable by closure of the particular circuit to enable the last-mentioned means to transmit the signal corresponding to the particular circuit.

5. In combination, in a building protective system, a circuit, a normally open circuit closer therein, a magnet, a circuit for said magnet, a manually controlled switch in said circuit of said magnet, an indicator adapted to be connected to said circuitcloser by energization of said magnet, a second magnet, said second magnet included in the first mentioned circuit, and a line circuit adapted to be closed by said second magnet.

6. In combination, in a building protective system, a circuit closer adapted to be actuated by the opening of a door or window in series with a circuit closer adapted to be actuated by movement of a lock, a line circuit, means for closing said line circuit, said means normally connected to said circuit closers; an indicator, and means for disconnecting said line circuit closing means from the first mentioned circuit closer and connecting said indicator to the first mentioned circuit closer.

7. In combination, in a building protective system, a circuit closer, transmitting means &

normally adapted to transmit a signal upon actuation of said circuit closer, an indicator normally inoperable by said circuit closer, and means for rendering sald transmltter inoperable by said circuit closer and rendermg said indicator operable by said circuit I closer.

8. In a building protective system, signal transmitting means, means adapted to be actuated by abnormal conditions to render said signal transmitting means operative, a device for indicating a proper condition of the second-mentioned means, and means for rendering said signal transmitting means in.- operable by the second mentioned means and rendering said indicating device operable by said second mentioned means.

In testimony whereof I afiix my signature.

CAREY T. TTHEWS.