US1296270A - Fire-alarm. - Google Patents

Description

W. M. DANA L C. C. PALMER.

(LU www.

. clear, and

i o. rams or irriteren, -1 V erosion. 'ro is` neste,

neonato;

l art to which it appertains to make and use the saine. l

This invention has for its object to provide .an improved fire detector and alarm especially adapted for use in connection with telephone Systems; and to such ends, the nvention consists of the novel devices and combinations of devices hereinafter dei scribed and definedY in the claims.

in the accompanying drawings kwhich` illustrate the invention, like characters indi cate like parte throughout the several views.

Referring tothe drawings,

Figure ,l is a diagrammatic view illustrating thecomplete system; and

lilig. 2 is a detail showing one of the autovrnatic detectors in the form of a thermally actuated circuit closer having a fusible element.

Located in the building in which the de testing alarm system is installed, is an electric circuit herein designated as the detector circuit 3, in which is a source of electricai energy, suoli' as a storage battery fi. This detector circuit 3 has a closer, to wit any desired number of 'branch line leads 3a that are normally open, but at numerous places, are' adapted to. be cross connected by thermally actuated circuit closers oi' suitable form. "lliesel thermally actuated circuit closers may taire various forms, but as shown, are made up of approximately vU -sliaped springs e normally connected on one side tc one of the pair of leads 3, but normally out of engagement with contacts 5 on the other lead; The prongs of these circuit closers l are normally connected -lo solder 6 of low fusibility, that is, of usilnlity thought desiralole to. cause thesame to properly melt before a re has done. much damage in the vicinity thereof. When the solder 6 melts, the 'loosened prong of the contact closer 4L will` snr-ing intoengagemenjt with the cooperating contact 5 and close lthe detector spense er tenere 'recess applicants. neu naar c, rete, sensi ne. scares.

carentes e,

circuit, thereby. causing certain operations presently to be described.,

Tire several pairs ory branch leads 3 may `loe assumed to extend to ,dierent floors ot the building and they are, ot course, er tended to such places on ytice several doors and provided with the lire detectine' circuit closers wherever deemed advisab e..4 @t course the closing of the circuit through any one of these circuit elo/sers, produced lay an abnormally high temperature induced icy an incipient nre, will cause time closing or the detector circuit,

Lussac preferite .ie es one er ne' building but at any other suitable place and connected in the detector circuit '3 1s an electromagnet which., when energized,- op,

crates on tirey armature end ot .a dro 'latch 8 that is suitably pivoted at' 9. At t e tree en d of its long arm, vthe latch 8 is provided with a hook or detaining; loclr l0 that nor mally iiolds the upper end of a small inter rnediately pivoted switch actuating lever il;

that is under tension tok move Jfrom a suitably anchored coiled tension spring i2., Also, located in one lead 'of tice detector cir cuit is a pair ot spring contacts i3 that are under spring strain to separate and, when released, open the said detector circuit However, normally, or when the lever il is held by the laten d, the lower end of'. 'f

lever presses tire free ends of tire contacts i 13 into engagement .and closes. detector circuit et that point, The lever il, electromagnet andlatcli described, constitute one Jform of an important dev-:ice for tiarscgfs; tern Wnicii may :be designated as an electrornfnagnetic switch actuaton Located also in the building in which signal system is installed, and preferably in the immediate vicinity of tice electronic@ netic switch. actuator, issn alarm device preferably in tire torni or an electnlcally actuated alarm bell it. Located adj scent tothe local alarrnlceli it is a telea phone transmitter i5, The lcell .ifi and a cattery i@ are connected in.- a locel elaine.

circuit l?, the leads or which 'are comected to a pair of spring; contacts l that are irrsulated from eacli other and -normaiy fined so l l. u v q the said circurt is .normally open Elie vemitter l5 d a battery. i9 are connected` in. 'one or a pair. or leads' 20 that rare canine e1-tedc` across the telephone' line EL The Qi@ ccrmiccls im spi'iiigg ccccccis Eli l lclcfl imml cccli clslliclc sind fs lip csm rciccl sc chil; tbs c' cil, 26, ci lxc scid ccm tccts is ncrmclly 'c l 'lhc tclcphcnc lin 2l mcy bc cliche usccl motion cmi cmccgcmcmc sind y lic' cssiimcd tc bc, s, privccc lilac counseling clic ccc iclcgiliccc ci sys is icscllccl, with thc ccslcmciy cccI ircl ccliccs, auch cs lhs usc'cl rcccivcc 23 cmd call lp 2l, ilicic lacing c swiicii 2li' by which ciihciclic rccsivci' 23cm csll limp 24 ccc llc ccnmccic in ilic liuc circuit.

, The (is ci lhs iw@ @cls ci spring@ ccniccls i8 ccd 22 ci ciiciiics ssclivcly, crc sspcmlcil cui lccciccl quil/s cose ccgcthcr, sc llicl cnc mcmbci ci cccii ci scid pair ci ccmlaccis is cdcplcd lc hc cc- .1; by c gp -1 block 26 ci insulating mclcricl ccmcd by lilac ciiclnil clcsinglcvci il ciiy alcsciihcal.

'lhc mumcrcl 2l' indicaccs cn clscii'lc gong crli cssumccl lo los lccclcd im c cccvcnicnls plica cuisidc ci clic building icwliich thc system ic insfacllsd, snol ilic numeral 28 iiidi-1 ccics c ccnircl clccti'ic gong which may icc assumed lo lic lccclcd in llic dwelling ci hcmc ci the pciscm owning ills building in which lhs cl sys is llc. Tlic bsll 2? vis chown cs ccmncclcd .ccccss clic clcrm circuil l? by lccds 29, cmd ilus lcsll 28 -is showin cs ccnme'clsil ccic ihc leads 29 by ciccch lccds (l0. A

Willi t cwccgcmcmi, ss is czisclcc:7 wlicc cbc ccctccls i8 crc cicsscd ccgciliccg claim ciicaiic 1.7 will hc clcscrl, thcislay ciccic lcccl lcsll il cmd clic closing ci? clam 'circuil simu Stcccciisly clcscs ills ciiciiil; clicccgh ich@ cuisidlc claim lacll il?,

cccl libc cwiici"s pmvcic claim lzsll 28. Mcmcvci, whim lli-s spiiiig ccnlscf'cc @ifcis l iicsssfl mgcchcc ih@ ciiccii lalniciigli llalic lccc' clam lammsmiisci l5 will lcs clcccil sc ilicl. ii' cencccl che@ cuis ic lic? i'cccivsio clic ccc licci lah@ claim givc'c by clic lcccl clcim lccll il. 'llc cpciciicc ci clic @ce dsicc'lcr cual claim sysism suciiccl, is sulzslccliclly cs icllccfs:

Vfhcccvci c icc building. in which ilic sy fsm is imslcllccl, ciccl/cs cucli cbmcmcl lacci cs ic cicli lilac iusilclcmclci'icl c ci scy cnc ci thc ciicuic clcssis 4l, thc ilclccici cir cui?, 3 lic clcscd smi mcgcci 7 will lic cuerd. cn mcgcci is cncigizc il "if cpcrcics cn ilic epcmlicg cmcicic smi ci imi lifts the scm@9 lalicrcliy iclcm-` lcvcr 11. cm swiichclcsccsccl, sciicg i@ will ilcicw thc uic i picssci' b cck 26 against lhc iicc @is ci fil: cdjcccnl; spring coclccts i8 ccd ilccicby clcs n, clc circuit l? and its bicccli circuits 29 cmi-3G cmd .ullicmcccsly llcwi clc si licciicr ciithc lcfsc 8 ing swifl'fclmclcsinf: c; lover-ll is n:

cull, 20 cc h lhs mmm Ncimclly c cciiicc @c .is im @mmm @c llic @acciai/c thc buildicg' im which lalic .hcc slcrccfl and, liciicc9 l? cmi 20, ic

' ccilictcif wliciclcm is clccccl thc switch ci salici claim cii'ccil will cicsiiic ci lili@ lim@ circiiil: ihicugli ccll lcmp QQ .wmp lh@ mi clic scuiicl maids by llic lcccl claim lisll il,

wliicli scumi is lclicc up sind irciismiilccl liy thc spccisl icciticil5. @amiral will, ci ccuisc, ccdcicicnd lilac clic' cgi-iig ci this licll ci clic csrciculci louilclinggi' plscc Wncrc clic system is insicliccl, iiiiccics limi c ilzcc will ccll clic ic dcci-lzmcci, directing ilicm' lc ilic plccc ci clic lll; il'xc s cmc limc,I

ilic building or plant, sic bcll 28, will bs Thc ccll lamp 2i is only ccc ci scvcicl icims ci ccll devicc ilici. mcy los csccl cc ccll' ih@ cllcniicn ci ccmicl lac lhs laici that c :lira has stance/d.. A bsll mcy be ucsd cs' am sclcliiicc ic ci substilclic ici ilic scid lamp when clcsiicd. lt shcul cow wlmi ilic dslccici" circuit 3 is clcscci, cs abcvc dcscribcd, cmi magnet cnci'gizcd cmi ccuscfl lc sci ugpcii icl/cli 8 lo rclccsc switch clccimgl; lecci' ll, cs cbcvc dcwribcd, ills iiiz itiailmcvcmcccscf clic ssicl lcvci: il scivc cc iclccsc ilic cnc spring ccniccl: i3 iicm clic cilici, ilicrclcy pcrmitiing thc said spring ccciccis itc hc scpsrciccl and cpcii lili@ clctcccci ciicuil; immccliclssly ciici lilac cii'ccii; closing lcvci lascia misi-ccd. is impciiccc lcscccss il cuis cui ills balciy 'l immcdiaicly cil/ci il pcicimccl iis cliicc ci ccciicg'f iciccsc ci liuc cii'ciiil, clcsiiig'lcysi ccd ilis clcsimg ci@ clic clcici acci special iiciismifcsc circuits. l v

Wlicl, Wc claim is:

l. Al llc@ dcisclic'g and claim sysicm ccmf iii-icing c dclcciiiig ciicci; imi/inc' ilicisic ciculiiplicily ci normally @pcc iccimcily ccicciccl circuit clcscis, cc claim cicciiii haw ing am claim dcvics ccd c, fscimcllclccc swiccli, cncl cc clccicmcgcclic sWir/ch wlicc scid clsiccccc circuit by clic .ringing of ilcc cciiiccl that s, ic has bc clcsc 9 scifi detector ciccic lim/ing c ncimclly clcsc'cl switch circcgccl lac loc cpsiicd by clic switch clcsing mcvcmccc ci scid swiccli cciccicix l mccicrl jtliccciii cccl lccclccl im clcss pisciy lc thc claim cincc ci scicl cli/mc ccfccil9 scc 1 nl lha-,i3 llic clcicclci? cic.

folic cyl/cci" ci mans' cgci ci @felici palsy pccislly iccicscccl m,

lic mclcli that lli icc

icc

meente n nornmliy open switch in ssiiri transmitter circuit connections, seid letter switch oleo being arranged to he ciosed by seid switch. actuator when said detector circuit is closed, Seid detector circuit lnrving n normally closed switch arranged to he opened by the switch ciosing movement of sind switch nctuntor.

3. A rire detecting und nlarin'systeui comprising n, detecting circuit having therein e multiplicity ot normully open thernnrliy actuated circuit closers, un alarm circuit heviug therein un ulurln 'device :trici e nornmliy open Switch, an electro-umgnetic switch uctu :ttor whereby, when Said detcctorcireuit is closed, the switch of seid alarm circuit Wiii he cioseil, seid detector circuit having n normaliv closed switch arranged to be openeti by the switch closing movement et seid switch actuator, n line circuit which, et the contrai stetion' has o, teiephene receiver, e central onli cicvice, and a switch cutting seid receiver enti cnil device into end out of notion :it wili.,

i, A rc etecting and :derni system cornprising ndetecting circuit hnving therein n mnitipiicityor normeiiy open thermeliy uctunteri circuit closers, en clarin circuit heving therein en eier-in device and n normally open switch, an eiectro-mngnetic switch e'ctuntor wherehy, when said detector circuit is closeti, the switch et seid elerm circuit will he ciosec't, seid detector circuit having e nornmiiy ciosed switch arranged lto he openeii hy the switch eiosing movement of seici switch nctnetor, e line circuit, which, et the centreistetion has e 'teiephone receiver, e contrai cnil cievice, and e switch cutting seid receiver end ceti device into and out oi.2 action et Wiii.

5. iin n tire detecting end alarm syst-ern, the combination with e detecting circuit including en eiectromegnet enti e multiplicity or normality opened thermeiiy actuated cir two switches, :i inte-h norinztiiy hoidin cuit closcrs, or en charm circuit inciu'ding nu electrically nctunteci gong, n iine circuit, e tciephone transmitter locnteril closciy ndice cent to seid going anni connected across ser lino circuit, uorinully open switches in sani :ilurni und tramsniittcr circuits, n switch actuetor operative when reieesed to close simi two switches, e hitch norniniiy holding seid switch actuator but arranged to be reieeseci when said eicctronmgnet is, energized by closing ot seid detector circuit, enti n nornmliy closed circuit eioser in seidV detector circuit :rrrengeri to loe opened byn the switch closing` movement of sind switch actuator. 6. in e fire detecting end alarm system,

the. combination with a detecting circuit in- .cluclingg1 en' eiectromegnct end n muitipiicity closedcircuit cioser in Seid detector circuit' arranged to he opened by the switch dosing movement of seid switch actuator, said line circuit ete centrati station having e telephone receiver, a contrai cnil ldevice, and n switch whereby' seid receiver and ceii device may he connected in the iinecircuit et wiii.

iin testimony whereof we efir our signetures in presence ci 'trio witnesses.,

WLLAM' .c CHARLES C,

Witnesses z CLARA Demeurer, Bnnicrcn BAUMANNG

Images