US944575A - Combined telephone and protective alarm system. - Google Patents

Description

APPLICATION $11.31) 'Hnms. mos.

Patentd Dec.2'8, 1909.

Irwenior srau i zs rerEN-rorFIoE.

. a 1 Jaime a; noun, or calme -runners, ASSIGNOR r'o JOHN E. SHEPHERD," or" '"onroaeo, ILLmors. I

'.comnriqnn rntnrnonnhiun rnor'nc'rrvs sYs'rEm;

' Application ,filed February 1Tb all whom it may concern.

"the follbwingl is a" specification.

Be it known that I, JAMES G. NoLEN, a citizen of the United States, residing at Chicago, in the county of'Cook and State of Illinois, have invented certain new and useful Improvements in Combined Telephone and 'Protective Alarm Systems, of which My, invention relates to improvements in combined telephone and protective alarm systems, and has for its primary a object to provide simple and inexpensive means for establishing through the ordinary tele 1 phone systeman eflicient protective supervisory service, in the nature of burglar alarm, firealarm, or like serv1ce.

More specifically one of the salient. objects of my invention is to 'provijde'mea-ns whereby the ordinary bell and transmitter of a subscriber s telephone installation, and

the line signal at the central station may elfectively be. employed as media for transmitting to the central; station an unmistak-- I able alarm upon theoccurrence in the protected area of the conditions. against which the service is'provided for protection.

' Another object of lily-invention is to pro stopped, by the occurrence of'such conditesting the condition of the protected circuit without 7 disturbing 'the central operator upon the telephone line. And yet a further object of my invention is to provide appliances for effecting the. protection described,

whichmaV be readily and cheaply applied to the ordinary commercial telephone systGIIlWVltllOllt changelin the latter and with a minimum'of expense.

Still other-and further objects of my invention will best becomeapparent to those 45' skilled, in the art from the tollowing description taken in conjunction with the accompanying drawings, wherein I have illustrated for purposes of a full'disclosure an application of mylinvention to a well known form of telephone equipment, the parts heing diagrammatically shown in a single VIEW.

In the drawing C indicatesin general a central station and S indicates in general Specification of Letters Patent. Patented 26, 1906.; Serial No. ao2,sss i a subscribers station, thetwo being shownas connected by a metalliccircuit telephone 1 line of theflcentral'ener type. It will understood, however, .t at while for con-f venience this" particular type. of telephone-j system Wilhbe describedfin some detail, ;I do'not 'hmlt my invention thereto,as it will be apparent to those skilled'in the art i I that my invention might readily be adapted to other types of telephone equipment,

At the central stat on ,are p'ro'vided i'n general a central battery C13,"; line Sionalap pliances L, a combined ringing and listening generator R. These partsmay be of any usual or preferred form, and the vair- 'ing key K, an operatofisset O and a ringcuit may be run in any usual way,'the cir-' cuit herein shown comprising a hne wire 1, leading through-the coil Z ofthe relay of the signal appliances L to the subscribers Sta-.

tion, and a line wire 2 leading from the op posite side of the battery to the subscribers station S.v c I a The line signal appliances comprise a re layythe armature l whereof has its pivot end connected with'the line 1 and adapted when attractedby the magnetl to close contact withthecorita'ct 1 connected by wire Z? through a series'lamp Z with the wire-2. As to the illustrated key K; in the line wire 1 are included a pair of normally closed switch tongues 10 if, the spring "k vbeing movable upon the rocking of the movable element 7: of the key, to break contact with the spring 70 and make contact with the spring 71 Thelatter is connected by wire 3'with one terminal of the ringing generator It, the said terminal of saidfgenerator' being preferably grounded by, wire 4. The linewire 2 also includes a pair of normally closed springs ic, If, the spring k being adapted'to be moved by the rocking key member 71: to make contact witha normally open spring is wh ch is connected'by wire 5 with the ungrounded' term-inaliof the ringing generator R. Upon the opposite side of the key 'member is are arranged two pairs of normally open contact springs adapted to be respectivelyclosed bythe key member 71* when rocked in'a proper direction, a spring 7c of one of such pairs being connected by wire 6 with the line w1rev1 (at spring If) and thecorresponding spring 7510i the other pair being connected by wire 7 with the line wire '2 (atkspring 76*) It The remaining -.sp-r1ngs k and 70 ofithe two pairs are con:

nected to a wire-8 Whichinclu'des thereinscribjers set. The secondary winding i of coil and operators receiver 1' are con-,- nected in" closed circuit. by: wire 91in the usual manner. These'parts may constitute: partof -anordinary central station equipment and itwillibe-j obvious that under normal 'conditionsJthetwo line wires 1 and 2'.have ithroughtconnectionthrough the springs of 5 the keyfjK, and that. ifthe' key member 70 be rockedin one-direction it bridgesthe operators setacrosa the line.

'-.'ringing '-ge1ierator-.R"upon the line, while if rocked in the other direction it bridges the -;stat i'on S'the line" 1- is led through the primary c'coil y" of the iniduction 'coilf J and .the 'transm'itter '1 to the "upper-zcontact 's of a switch hooks the pivoten'd \vvl't'ereoiis connectedto the line 2.

-; At the subscriber [The secondary" 7' "or the induction coil J is,

iconnected, in closed circuit -'\vvith .th e' receiver .is-connectedto the wlre'l'O'betweenthe bell -The 8210f the switch 11001! is by 'wireno' with the. line 1, said wire 10 including an initiator i of an aural alarm "suchilasgf thief-magnet coil of: anordi:'

nary.tgletatficfbell-l and '7 a condenser 11. 11 a P r st i eie e din-e y Su r b tionhnder v conditions will be read.- ily imderstoodf 'b' "-jthose skilled in the art snd-neeancttge escribed.

"' "The l)" OfifilVQ circuit constituting,= Part of my invention' comprises parallel. nd 13 ween which are bridged normally it closers, 14:} 1 14;" which may berm devices attached to doorsjand' herrno'stats, for indicatinga'n un- 'QeeOfJ heat. inthe-gpremises'; or other protective f devices. It I will." be 1 understood Bandj'the condenser. 11.. .ThedropD has a shutter d is connected "to thejwire '13, while und. v

The-'wire 112 isfwhen the system is. in

working condition connected by wire 16 with the line wire 1 between the switch contact and the transmitter T..Suc'h connec- 1 tion is-preferablycontrolled by. a. switch U- 57 thepivot post ofawhichis "preferably con.--'

circuit Z {so that the line si contact is connected jby wire'15' with nee-Fed i n .i tir 12 and the blade of- --wh ch 1s adapted to swing, into I contact with the termlna'l contactu of wire or a-contact 'u connected by wire 17 with the ground, -At the central. station a condenser 18 ,is

- preferably provided, and connected between the ungronnded terminal of thex eneratojr' andthe'line wire2'by wire 19.-

It Wlll now be seen; that the protective system comprises normally open protective c1 cult closers and ,a' 'clrcfi itpormally open at sa1d clrcult' closers'which other wise'bridges the opening'inthef transmitter circuit between contact s-' and switch hook s, 'such bridging connection comprising wire 16,. blade of switch U, wire 12, a circuit closer '14:- or 14, wire 13am] part oi wire 10 to the .switch hooks. g Thisconnectiop'also; it will .be apparent, ,cioses, (except-tor the normal opening at the 'clrcult closer 14) a circuit including-the line signal and a source of curcentral battery 0 B by wire 1 through the relaycoil of the line signal, through the primary j of the induction .coil J, the transmitter T, wires 116, 12,' 141' 'and 13, l0 and 2 back to the central'battery. f p

. The operation of the parts will be-as follows As'sumihgthat switch U be thrownvto."

make contact with point a, when a circuit .closer i'n" a protective circuit is closed, the circuit la'st tracedis closed so that the relay w v 'fofxline' signal. equipment'is energized at- The operation ofthe telephone installa 1 tractingfitsarmature Z and closing the local al lamp Z is energized and the opera'tors attention attracted; Instantly upon the closing of the circuit described themoil d of drop D becomes energized; so that its shutter'd" falls,

against the contact 01 establishing a ground. Now the. constantly. runnlng generator R transmits itsimpulses through the wires t,

19 2, switchl hook .9, contact 8 w re '10."

"telephone equipments the bell or other aural alarmwill [be within efiiective distance of the" transmitter T to communicate sound vibrationst o the said transmitter, and, it. being, remembered that the closing; of the rent. supp1y,jsuchc1rcuit being traced from" circuit "closer; l t-pr 14 automatically bridges the opening of the transmitter clrcuitat the switch hook, "it will be apparent that when the .operator dep'rgesses the key member into bridge in her-telephone "set, inresponse. to the lighting of the line signal lamp Z she hears acontinnonsringing'of the bell at the .subscribers station, and is thereby instantly sigma apprised of the existence of trouble in the "protective circuit, as under normal condi- For. purposes of testing "the systems and ascertaining that no doors tions the bell and transmitter are never in circult'at the same time, as will be well understood by those skilled in the art.

It will, of course, be apparent that in adapting mysyste n to party lines it is'well to use bells of different tones, or having N 1' other distinguishingcharacteristics, to dis- .10

tinguish between the different subscribers;

stations on the line, v the condition" of or W ndows are open in the protected area but, that the circuit closers are all open; the

switch U'is thrown over upon contact u'.

Assuming one of the circuit closers to be 'wire 2 thence through the switch hook, wire Wire 12, switch U and Wire 17 to'ground, so occasioning' the bellto ring.- This circuit, it will be'observed does not include the line signal and jin no Way disturbs the operator at central If however, all of the circuit --closers are in proper "normal conditionthat is to say, open-the circuit is not completed and no response is given by the bell. It will now be seen'that my invention pro' vides for the calling of the central operator 'upon the closure of a circuit-closer in a protective circuit; for the initiation of an audible signal upon the closing'of the circuit closer and for a continuation of such signal when started irrespective of the subsequent opening ofvthe circult closer, sucha continuously sounding alarm tending to frighten away an intruder in the case 7 of burglar alarm, or.to notify the occupants of the pro .tected area-in case of fire, and also to notify the central operator instant-1y ofthe eX- iStQIlQG of, undue conditions by the ringing of the telephone bell heard in the transmitter. Asa further refinement, I place in se-- agQ-to openthe circuit. This switch may conveniently be placed in-the barrel of the .ries in the protected circuit a line breaking switch. u' which may be operated by a key door lock, so that when the key is inserted in the open door the protection system is dis- "a'bled, Thus 'an authorized person may enter the premises without sounding an alarm,

by inserting his key, opening the door,

throwing switch U to open position, withdrawing his key, closing the door and throwing switch U back to contact with point 11.

' While]; have herein describedln some de-.

tail a specific embodiment of my invention forpurposes of a full disclosure, it w1ll be understood that I do not intend to limit my invention to the specific arrangement shown.

as it will be apparent to those skilled in the kart] that its parts mig t" l e' variouslv arranged and constructed without departing from the spirit and scope-of my invention.

Having thus described my invention, what I claim and desire to secure by'Letters Patent, of the United States, is.

l. The combination with a telephone system, involving a line connection .froma central station to a subscribers station, suit able means of current-,jsupp'ly; at the central station an operators set and a line signal, and at the subscribers station a transmitter and a switch opening the transmitter circuit when-the subscriber's line is not in use, of a protective system comprising a normallyopen protective circuit closer, a circuit normally open at said circuit closer and otherwise bridging the open switch connection of the transmitter, and otherwise closline signal and a source of [current supply. and an electrically initiated aural alarm device having its electro-responsive part op'erat-iyely associated with the circuit closable by? the protective circuitcloser and en ergized by a central source ofsupply.

. ,The combination with a-telephone systance of the transmitter,havingan electroresponsive controlling part operatively associated with the. protective circuit to initiate the activity of the alarm device, and means, responsive to the closing of the procuit excluding the said circuit "closer and including the alarm device.

tem. involving a line connection from the able means of current supply: at the central station an operators set and line signal appliances, and at thesubscribers station a transmitter and a switch opening the transmitter circuit when the subscriber's l iieis not in use; of a protective system comprising a normally open protective circuit closer. acircuit normally open at said circuit closer and otherwise bridging the open switch connection of the transmitter. and otherwise rent supply: an electric audible alarm within effective distance of' the telephone trans mg a circuit including the transmitter the tem,"i nvolving a line connect-ion from 'the central stat1on to a subscrlbers station, suit tective circuit, for closing an energized cir- 3. The combination with-a telephone sysclosing a circuit operatively including ,the line signal appliances and a source or cur-i central station to a subscribers station, suitmitter, andfimeaps responsive to the oper= 1 operation of the alarm, arrangedto permit ation of the circuit-10861 t initiate the the continued operation of said :alarm independently'of the condition of the protective circuit closer. v

' 4. The combination with a. telephone sys;

'tem, involving a line-{connection-from'the central station to a subscriberis station; suitable means of current supply; atthe central station an operators set and line signal appl ances, and at the. subscribers station a transmitter and a switch opening the transvice, operable upon the closing jo'f'said circuitcloser.

5. In a system of the character described,

the combination with a tele hone system involving a line, a source 0 current supply therefor, and a ringing generator normally connected to said line, ofanaudible electroresponsive alarm device at the subscribers station, and at the subscribers station means for establishing a circuit including the ringi ng generator and the audible alarm device, such' means including: a protective circuit and a normally open protective circuit closer.

6. In a system of the character described,

the combination with a telephone system in volving a line connection, at the central station line signal apparatus, an operators set' and a ringing generator; at the subscribers stat-ion a transmitter and means for opening the transmitter circuit when the set is not in use, protective circuit closers, connections arranged to establish a circuit closable by' said circuit closers, including a source of current supply,the operating portion of the line signal apparatus at central station and thesubscribers transmitter; an electro-responsive audible alarm device in the said circuit Within effective distance of the transthe condition of the protective circuit.

i 7. In combination with a telephone system involving a line'connection, a central station equipment comprising a normally '0perating mitter; and means in saidcircuit for establishing a grounded circuit including the ringing generator, and the audible alarm devlce, upon the closing of the protective circuit, whereby an audible signal is initiated upon the closing of the protective circuit, and is thereafter maintained irrespective of the grounded ringing generatorzand atasu h scribers station an audible eliictro-responsive alarm device, suitable circuit connections. a normally open circuit closer, adapted when closed to establish a. circuit including a source ofenergy, and in said circuitan-auto matic circuit closer operable .by the attire closing 9 i i ui seam-sh: a ground "digit mcluding central rin i g generator and the subscribers alarmdevioe 8'. Theoombination'with a telephone ys;

tem involving suitable cir oui t connections, at central an operators set, a line signal, inde-- pendent sources. of current supp for 'the line 'si nal and alarm devices, and at'the subscri ers station .a transmitter, a switch for opening the transmittercircuit, and. an

alarm, of a protective circuit, a;nd protective devices therein, arranged when operated to effectthe establishment of a circuit for the line signal and its source of supply, including the transmitter, and another circuit for the alarm and its-source of supply.

e 9. The combination with atelephone sys:

tem involving suitable. circuit'connectionsgf at central station an operators set, a line signal, independent sources of current sup- .ply for the. hue signal and alarni devices, and at the subscribers station a transmitter,

a switch for opening the transmitter circuit, and an alarm, of a protective circuit, protective devices. therein arranged when op erated to efiect the establishment of a circuit for the'line signal; and its source offsupply including the transmitteryand another circuit for the alarm and its source of supply,

and a test'switch adapted when in one pos1- tion to condition the protective devices to.

establish a circuit for the alarm and its source of-currentwithout afiecting the line Y signal. v I

10. The combination with a telephone system involving 1 at the subscribers station a telephone set including a telephone call bell and a transmitter within effective distance of the call bell, and at central station-an operators equipment; of a protective system involving means for 'cotemp'oraneously establishing an operating circuit for the said call-bell and a talking circuit'for said trans-s niitter.

11. The combination with a telephone system involving at the subscribers. station a telephone set including a transmitter, a call bell and a switch normally connected ,with

the call bell and opening the transmitter circuit, and at the central station involving means of current supplyfor the call bell, of a protective circuit-involving means for closing the circuit of the transmitter, and a circuit for'- the call bell and the .central sour of current supply.

12. The combinatmn with a telephone sys-' tem-having a source of currentsupply .and

. com-prising at the subscribers station a.

the transmitter circuit, of a sounding alarm,

r I the transmitter circuit and initiating the 16 tra-nsmltter and a switch normally opening operation nfthe sounding aiarm.

,Intestimony .whereot I hereunto set my withineflective distance of the transmitter, hand in tie presence of two witnesses.

a, normallyopen.cii'cuitarranged to be ener- Q J j gizedg when closed, by the source ofcurrent v JAMIE NOLF} 'supplyfqrthe'telephone system, andmeans Ind e presence ofrespqnsive to closure of said circuit for es'tab- Mimi" F. ALLEN,

fishing a bridge across the switch-opening in GEQT. B'IAY, J1.

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