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UNITED STATES PATENT OFFICE. NIKOLATESLA, OF NEW YORK, N.Y.,ASSIGNOR OF ONE-HALF TO CHARLES F. PECK, OF ENGLEWOOD, NEWJERSEY. SYSTEM OF ELECTRICAL DISTRIBUTION. SPECIFICATION forming part of Letters Patent No. 381,970, dated May 1,1888, ApplicationfiledDecember23,187. SerialNo.258,787. (Nomodel.) Toalwhon,itinctlyconcern: BeitknownthatI,NIKOLATESLA,from machines,includingthecombinedmotorsand SmiljanLika,bordercountryofAustria-Hun generators,havebeendevised. Forinstance, gary,nowresidingatNewYork,inthecounty amotorisconstructedinaccordancewithwell 5andStateofNewYork,haveinventedcertain understoodprinciples,andonthesamearma newandusefulImprovementsinSystemsof turearewoundinducedcoilswhichconstitute ) ElectricalDistribution,ofwhichthefollowing agenerator. Themotor-coilsaregenerallyof isaspecification,referencebeinghadtothe finewireandthegenerator-coilsofcoarser drawingsaccompanyingandformingapartof wire,soastoproduceacurrentofgreater electricaldistributioninwhichacurrentfrom asinglesourceofsupplyinamainortrans mittingcircuitiscausedtoinducebymeans I5ofsuitableinductionapparatusacurrentor currentsinanindependentWorkingcircuitor circuits. Themainobjectsoftheinventionarethe sameashavebeenheretoforeobtainedbythe 2Ouseofthesesystems-viz.,todividethecur. rentfromasinglesource,wherebyanumber oflamps,motors,orothertranslatingdevices maybeindependentlycontroledandoperated bythesamesourceofcurent,andinsome 25casestoreduceacurrentofhighpotentialin themaincircuittooneofgreaterquantityand lowerpotentialintheindependentconsump tionorworkingcircuitorcircuits. Thegeneralcharacterofthedevicesem 3oployedinthesesystemsisnowwelunder stod. Analternating-currentmagneto-ma Io the Same. variousformsofelectro-dynamicinduction.5o quantityandlowerpotentialthantheline-cur Thisinventionrelatestothosesystemsof rent,whichisofrelativelyhighpotential,to chineisusedasthesourceofsupply.Thecur Theformofconverterortransformerwhich rentdevelopedtherebyisconductedthrough atransmission-circuittooneormoredistant 35pointsatwhichthetransformersarelocated. Theseconsistofinduction-machinesofvarious kinds. Insomecasesordinaryformsofinduc statethat,insofarastheprincipalofcon tion-coilhavebeenusedwithOnecoilinthe structionisconcerned,itisanalogoustothose transmiting-circuitandtheotherinalocal transformerswhichIhaveabovedescribedas 4oorconsumptioncircuit,thecoilsbeingdifers electro-dynamicinduction-machines,except entlyproportionedaccordingtotheworkto thatitinvolvesnomovingpartswhatever,and9c bedoneintheconsumption-circuit-s-thatis ishencenotliabletowearorotherderange tosay,iftheworkrequiresacurrentofhigher ment,andrequiresnomoreattentionthanthe potentialthanthatinthetransmissioncircuit otherandmorecommoninduction-machines. 45thesecondaryorinducedcoilisofgreater IncarryingoutmyinventionIprovidea lengthandresistancethantheprimary,while, seriesofinducing-coilsandcorespondingin-g5 ontheotherhand,ifaquantitycurrentof ducedcoils,which,bypreference,Iwindupon lowerpotentialiswantedthelongercoilis acorecloseduponitself-suchasanannulusor madetheprimary. Inlieuofthesedevices ringsubdividedintheusualmanner. The avoidlosinlongtransmission. Asimilarar rangementistowindcoilscorrespondingto thosedescribedinaringorsimilarcore,and bymeansofacommutatorofsuitablekindto directthecurentthroughtheinducing-coils65 successively,soastomaintainamovementof thepolesofthecoreandofthelinesofforce whichsetupthecurrentsintheinducedcoils. Withoutenumeratingtheobjectionstothese systemsindetail,itwilsuficetosaythatthe7o theoryortheprincipleoftheactionoropera tionofthesedeviceshasapparentlybeenso litleunderstoodthattheirproperconstruc tionandusehaveuptothepresenttimebeen atendedwithvariousdificultiesandgreat75 expense. Thetransformer'sareveryliableto beinjuredandburnedout,andthemeansre sortedtoforcuringthisandotherdefects havealmostinvariablybeenattheexpenseof eficiency. Ihavedevisedappearstobelargelyfrefrom thedefectsandobjectionstowhichIhaveal luded. WhileIdonothereinadvanceany theoryastoitsmodeofoperation,Iwould85PDF Image | Nikola Tesla System of Electrical Distribution 381970
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