The U.S. Patents of Nikola Tesla

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Fig. The poles will consequently shifted through one half the ring. These figures will bé readily understood from the foregoing. The poles . The resultant poles will therefore the line F TS, Fig. short reference these figures will sufficeforan understanding oftheir significance. this phase coil the neutral posi- 65 tion while coil generating its maximum current, which: the same direction in Fig. ico The disk Fig. 1\ It results, therefore, that when the generator- 30 coils have made one eighth revolution, reaching the position shown Fig. and 4*illustrate the con­ ditions which exist when the generator arma­ ture has completed three eighths revolu- 55 tion. the current the coil practically nil, whereas the coil B'at the same time developingitsmaxiiuumcur- rent, and the means indicated the de- 20 scription Fig. 25 The same order connections being observed between the coil and the coils C', the latter, when traversed current, tend fix the poles right angles the line F TS Fig. This effect I utilize producing the rotation body or armature variety ways—for example, applying the principle above described the apparatus shown Fig. Fig. shown cut away on oppositesides; but this, have found, not essential effecting its rotation, circular disk, indicated dotted lines, also set in rotation. At the point indicated the current the coil B is maximum, while nil, the latter ' coil being its neutral position. cylindrical 1’5 drum-armature core, which, for obvious rea­ sons, should besplit far practicable to prevent the circulation within currents of induction. Figs. end or side view'of generator with the fields sec­ tion. top view 12r of the same with the field section and dia­ gram connections. This phenomenon attribute 1 x 5 5 a cei’taiu inertia resistance inherent the metal the l’apid shifting the lines force through the same, which results continu­ ous tangential pull upon the disk, causing its rotation. Fig. Fig.armature the generator. and 1*to 8“, , foran illustration ofthe various phases through which the coils the generator pass when in operation, and the corresponding and result- io ant magnetic changes produced the motor. The arma­ ture set revolve within iron shell, B', . view elevation and part ver­ tical section motor. the circuit including this coil may also include, say, the coils of the motor, Fig. 115 In illustration other forms inven­ tion, shall now describe the remainingfignres of the drawings. The posi ■ 35 tion the poles will therefore the result­ ant the magnetizing forces the coils—that is say, will advance along the ring a position corresponding one-eighth the revolution the. and 80 the same seven-eighths revolution of the generator-armature. both pairs coils and will traversed by currents and act opposition, far the location the poles concerned. 5*. Fig. the position the coils indicated Fig. In Fig. When complete revolution accomplished, the conditions existing the stai’tare re-es- 83 tablished and the same action repeated for the next and all subsequent revolutions, and, in general, will now beseen that every revo­ lution the armature the generator pro­ duces corresponding shifting the poles 90 lines force arohnd the ring. will, consequence, be shifted position ninety degrees from that the start, shown. I.have like manner shown the conditions existing each successive eighth one revolution the re- 55 maining figures. The coil the other hand, having entered field opposite polarity, generates a current opposite direction. 6*, 75 or, other words, the poles the ring wilt be shifted along five-eighths its periphery. the ar­ mature has completed five-eighths revolu­ tion.381,968 the generator the motor, and the other the remaining coils and Cofthe generator and the motor. this position coil develops less 70 powerful cui rent, but the same direction as before. This form motor may used place of that shown above. and the same manner illustrate the phases the generator and ring three- quarters revolution, and Figs. The revolution the armature the gener­ ator between the field-magnets obviously produces the coils alternating currents, the intensity and direction which depend 15 upon well-known laws.IS the ring Fig. This seems confirmed the 110 fact that circular disk steel more effect ively rotated than one soft iron, for the rea­ son that the former assumed possess a greater resistance the shifting the mag­ netic lines. The disk ow- 95 ing its tendency assume that position in which embraces the greatest possible num­ ber the magnetic lines, set rotation, following the motion the lines the points of greatest attraction. It remains now explain the mode op- 5 eration this system, and for this purpose I refer the diagrams, Pigs. Hei-e both coils are generating current; but the coil B', having now entered the oppo­ site field, generating current the oppo­ site direction, having the opposite magnetiz­ ing effect; hence the resultant pole will on 60 the line shown. The result,with the proper connections, would the magnetization of the ring B', the poles being the line FTS. one-half of one revolution the armature the gener­ ator has been completed, and the resulting magnetic condition the ring shown Fig. The core wound longitudi­ nally with two coils, EandE', the ends which 130 are respectively connected insulated con­ tact-rings carried the shaft upon which the armature mounted. Figs. the armature the generator has progressed one quarter revolution