The U.S. Patents of Nikola Tesla

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The 65 construction this any equivalent form of converter may carried further, above pointed out, inclosing these coils with iron— as, for example, winding over the coils a layer layers insulated iron wire. The obvious result will shift the poles the ring through one-quarter of its periphery. the present appli­ cation object describe the best and most convenient manner which atpres- 35 ent aware carryingout the invention ap­ plied system electrical distribution; but one skilled the art will readily under­ stand from the description the modifica­ tions proposed said applications, wherein 40 the form both the generator and converter in the present case may modified. For exam­ ple, the present case employ pair or- 85 dinary permanent electro magnets, E, between which mounted cylindrical arma­ ture shaft, and wound with two coils, G G'. Fig. The device provided with suitable bind- 70 ing-posts, which the ends the coils are led. results from this 2 that the different electrical phases the gen­ erator are attended corresponding mag­ netic changes the converter; or, other words, that the generator-coils revolve the points greatest magnetic intensity the 25 converter will progressively shifted or whirled around. Besides the currents generated the second­ ary coils dynamo-magnetic induction other currents will set the same coils con- 125 sequence any variations the intensity of the poles the ring This should avoided by maintaining the intensity the poles con­ stant, accomplish which care should be taken designing and proportioning the gen- 130 erator and distributing the coils the ring A and balancing their effect. diagram the cir- 5c cuits the entire system, the generator being shown section. When this is . For example, shown Fig. Upon this core, by any well-known method, wind, say, four 60 coils, B', which use primary coils, and for which use long lengths compara­ tively fine wire. Fig. I use core, which closed upon itself— that say, annular cylindrical or equivalent form—and the efficiency the 55 apparatus largely increased the subdi­ vision this core make thin strips, plates, wires soft iron electrically insu­ lated far practicable. Over these coils then wind shorter coils coarser wire, O', con­ stitute the induced secondary coils. 252,132 and 256,561,1 have de­ scribed detail the manner constructing and using such motors. looting the results this com­ bination, will observed that given 95 point time the coil its neutral posi­ tion andisgeneratinglittle current,while the other coil, G', position where ex­ erts its maximum effect. The gener­ ator this system will adapted the con­ verter the manner illustrated.generates current opposite direction and increasing strength, while coil G, passing from its maximum its neu­ tral position generates current decreas- 115 ing strength and same direction before, causes further shifting the poles through the second quarter the ring. The terminals these coils are con­ nected, respectively, four insulated contact 90 or collecting rings, IT, and the four line circuit-wires connect the brushes K, bearing these rings, the converter the order showm. The movement the coils through the next quarter turn, during no which coil enters field opposite po­ larity and . Assuming coil Gto be connected circuit with coils the too converter, and coil with coils B', is evident that the poles the ring will be determined coils alone; but the armature the generator revolves, coil de­ delops more current and coil less, until 105 reaches its maximum and its neutral posi­ tion.331,970 two sets coils are wound side side su­ perposed otherwise placed well-known ways bring them into the most effective re- ' lations one another and the core. This principle have ap­ plied under variously-modified conditions to the operation electro magnetic motors, and in previous applications, notably those hav- 30 ing Serial hios. In illustration therefore the details of construction which present invention in­ volves, now refer the accompanying draw- 45 ir‘gs- Figure diagrammatic illustration of the converter and the electrical connections of the same. horizontal central cross- section Fig. the shifting 120 the poles the ring powerful dynamic inductive effect the coils produced. may con nected multiple arc when quantity cur­ rent desired—as for running group in­ candescent lamps, D—while may in- 80 depeqdently connected series circuit including arc lamps the like. With this induc­ tion device use alternating-current gen- 1^ erator with coils sets coils correspond with those the converter, and means of suitable conductors connectup independ- • cnt circuits the corresponding coils the gen­ erator and converter. The diametrically-opposite coils and B' B'are connected, respectively, series, and the four terminals are connected the bind­ ing-posts The induced coils ai-e con- 75 nected together any desired manner. The sec­ ond half-revolution will obviously repe­ tition the same action. The 5 inducing primary coils wound the core are divided into pairs sets the proper electrical connections, that while the coils of one pair set co-operate fixing the mag­ netic poles the core two given diametric- io ally-opposite points, the coils the other pair or set—assuming, forsake illustration, that there are but two—tend fix the poles ninety degiees from such points