The U.S. Patents of Nikola Tesla

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The practical results of such system, its economical advantages, and the mode its construction and opera- 55 tion will described more detail ref­ erence the accompanying diagrams and- drawings. The motor comprises 70 ring annulus, preferably built of thin insulated iron rings annular plates, so as susceptible possible variations in its magnetic condition. Serial No. io The practical solution the problem the electrical conversion and transmission me­ chanical energy involves certain requirements which the apparatus and systems heretofore employed have not been capable fulfilling. obvious that proper progressive shifting the lines force may be utilized set movement rotation 45 either element the motor, the armature, or the field magnet, and that the"currents directed through the several circuits the motor are the proper direction commu­ tator for the motor will required; but to 50 avoidall the usual commutating appliances in the system prefer connect the motor-cir­ cuits directly with those suitable alter­ nate-current generator. Application filed October 12,1867., ASSIGNOR ONE-HALF CHARLES F.nited States Patent Office. 65 Referring first Fig. magnetism of 40 the lines force” accordance with the well-known theory, and consequent action of the motor. My present invention directed thepro- duction and improvement apparatus capa­ ble more nearly meetiug these requirements 30 than those heretofore available, and though I have described various means for the purpose, they involve the same main principles con­ struction and mode operation,which may be described follows: motor employed in 35 which there are two more independent cir­ cuits through which alternate currents are passed proper intervals,in the manner here­ inafter described, for the purpose effecting a progressive shifting the. This ring sur­ rounded four coils insulated wire sym- 75 metrically placed, and designated CCO'O'. t5 Such solution, primarily, demands uni­ formity speed the motor irrespective of its load within its normal working limits. 90 The free ends each coil are carried through the shaft and connected, respectively, in­ sulated contact-rings b'. Figures 8and 8s, inclusive, are dia­ grams illustrating the principle the action 60 of invention., havein- 5 vented certain new and useful Improvements in Electro-Magnetic Motors, which the fol­ lowing specification, reference being had to the drawings accompanying and forming a part the same. Near the ring, and preferably inside it, there is mounted axis shaft, magnetic disk, generally circular shape, but hav­ ing two segments cut away, shown. PECK, ENGLEWOOD, NEW JERSEY.) To all whom concern: Be known that Nikola Tesla, from SmiljanLika, border country Austria-Hun­ gary, residing New York, Y. (Nomodel. -These terminals are connected the terminals of the motor the wires and the"man­ ner indicated, whereby two complete circuits are formed—one including, say, the coils ico . ELECTRO-MAGNETIC MOTOR. The four free ends thus left are con- 80 nected terminals indicated. NIKOLA TESLA, NEW YORK, Y. Any conven­ ient form collector brush bears each ring, and forms terminal which the cur- 95 rent and from ring conveyed. SPECIFICATION forming part Letters Patent No. which diagram­ matic representation motor, generator, and connecting-circuitsin accordance with my invention, the motor, and the gener­ ator for driving it. 381,968, dated May 1,1888. This 85 disk mounted turn freely within the ring The generator any ordinary type, that shown the present instance hav­ ing field-magnets and cylindrical arma­ ture-core, wound with the two coils B'. The diametrically-oppositecoils are connected up operate pairs producing free poles diametrically-opposite parts of the ring. The remaining figures are views the apparatus various forms by means which the invention may carried into effect, and which will described in their order. On the other hand, necessary, attain a greater economy conversion than has here- 20 tofore existed, construct cheaper and more reliable and simple apparatus, and, lastly, the apparatus must capable easy manage­ ment, and such that, all danger from the use of currents high tension, which are neces- 25 sary economical transmission, may be avoided. 252,132