US837097A - Electric alarm. - Google Patents

Description

PATENTED NOV. 27, 1906.

s. MooRBR.

ELECTRIC ALARM. APrLIoATIoN FILED SEPT. 1e, 1905.

ATTORNEYS muren STATES -rei'rnisrr onirica.. ERNEST SAMUEL MOORER, OF FIXIID-E-RISON, SOUTH CAROLINA.

ELECTRIC ALARM. i

vTo rLZZ whom it may concern:

Be it known that I, ERNEST SAMUEL Moonen, a citizen of'the United States, and

, va resident of Anderson, in the county of Anderson and State of South Carolina, have invented a new and Improved Electric Alarm, of which the following is a full, clear, and eX- act description.

My invention relates to electric alarms and admits of general use, but is of peculiar value in instances where it is desired for the alarm to be automatic in its action, so as to indicate the change in condition of an electric circuit due to the movements of a burglar, the presence of a fire, or the like. e

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in both the iigures.

Figure 1 is a diagrammatic elevation showing my system ready Jfor use; and Fi 2 is a sectional detail, enlarged,- showing t e contact-spring 25 and fuse 26 for temporarily restraining the same.

A central station 3, provided with a bat- -tery 3a, is connected with wires 4 5, which may be ordinary telephone-wires. A subscribers telephone is shown at 6 and is connected directly with the wires 4 5. Branch wires 7 8 are connected in parallel with the wires 4 5, the wire 7 being provided with a transmitter 9 and the wire 8 leading to a relay 10. From this relay a wire 11 connects with a wire 12 through av hand-switch 13. Wires 14 15 are also connected with this switch. Disposed adjacent to the wire 15 is a wire 16, provided with contacts 17 of the kind generally employed upon burglaralarms and adapted to be opened and closed by the movements of doors, windows, or the like. Similar contacts 18 are connected with the wires 15. A relay 19 is connected with the wires 15 16 and energized thereby. This relay 19 is rovided with a contact 20, and connecte with this contact is a wire 12. An armature-lever 21 forms a coacting member for the contact 2() and is moved by the attraction in the usual manner. The wire 7 is connected with this armatured lever. y

A casing 22 1s provided with a contact member 23, insulated therefrom by a sleeve 24, and mounted within this casingis a spring-tongue 25, ,constituting a contact member for engaging the contact member Specification of Letters Patent. Application nea september 16,1905. seein No. 278,739.

Patented Nov. 27,1906.

23. A fuse-wire 26 is connected with the casing and with the spring-tongue 25, so as indicated in Fig. 2.

The relay 10 is provided with a contact device 28, which controls a circuit 29, provided with a battery 30, and included within this circuit is a bell 31 or analogous alarm. A relay32is-provided with a contact device 33, which by aid of a batteryl 34 controls a local circuit 35, and included Within this circuit is a bell 36 or analogous alarm. The

relays 10 and 32, together with the local circuits controlled thereby, ma f be inclosed within a casing 37. (Indicated y dotted lines in Fig. 1.)

l The operation of my device is asfollowszcate in Fig. 1, if a iire should reak out and melt the fuse-wire 26, (see Fig. 2,) the springtongue contact 25 by engaging the stationary contact 23, as above described, completes the following main circuit: battery 3a at t-he central station, wire 4, wire '7, transmitter 9, binding-post 27, casing 22, contacts 25 23, wire 12, switch 13, wire 11, relay 10, wire 8, and wire 5, back to battery 31.' This circuit alarms the central operator, who of course establishes the talking-circuit in the usual manner. Instead of hearing a call, however, the operator hears the ringing of an alarm. This ringing of the alarm is produced by the relay 10, which closes the contact 28, and thereby establishes the following local circuit: battery 30,wire 29, contact 28, bell 31, back to battery 30. y The ringing of the bell 31 actuates the transmitter 9, and consequently the operator at the central station 3 hears the ringing of the bell 31. If, however, instead of a tire breaking out, a burglar opens a door or a window and there'- by opens any of the contacts 17 18, the following circuit is thus broken: battery 16a, wire 16, relay 32, wire 14, switch 13, wire 15 relay 19, back to battery 16a. This denergizes the relays 19 32 and causes the contacts 2O The (parts being in the several ositions indi- IOO 33 to close the respective circuits controlled A as a local alarm and at the same time may actuate the transmitter 9, so thatv the operator at the central station hears the ringing of both bells 31 and 36.I The operator therefore knows from the character of the Iscund heard through the telephone whether the alarm is due to a 'fire or to a burglar.

,Having thus described my invention, I claim as new and desire to secure by Letters l1. The combination vwith the central station, of wires extending therefrom and forming anormally open circuit, a heat-controlled member for closing the circuit, arelay intere posed in one of the Wires, a local circuit closed thereby and including anv alarm, and a transmitter connected with the other wire adjacent to the alarm whereby to transmit the same. n

l 2. The combination with the'icentralA station, of Wires extending therefrom andform- 'ing a normally-open circuit, a heat-controlled member for closin the circuit, a'normally open local circuit `including an alarm adja- "centi to the heat-controlledv member, means interposed in one of the Wiresfor closing the local circuit, and a transmitter interposedin the other wire and adjacent to the alarm-for transmitting the same.

-3. The combination -of a centralstation provided-With telephone mechanism, wires connecting said central station with a distant station, a telephone-transmitter located at said distant station, an electric bell disposed at said distant station and located adjacent to said telephone-transmitter, a'locall circuit connected with said bell for energizing the same, a relayconnected, With said circuit for trolling the same,V another electric bell clisposecladjacent to said transmitter, a local circuit for energizing 'said last-mentioned electrlc bell, a re mentloned local clrcult, and contact mechanism controlled -by the movements of a burglar for controlling said last-mentioned circuit..v A

In testimony whereof I have signed' my name to this speciiication in the presence of two subscribmg witnesses.

ERNEST sAMUELfnMooRER.

Witnesses S. F. MoCowELL, Si N. GILMER.

ay for controlling said last--

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