The U.S. Patents of Nikola Tesla

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. The poles' 40 the ring Fig, 3“will consequence be shifted position ninety degrees from that at the start, shown. Fig, end or side view generator with the fields sec­ tion. The disk owing to its tendency assume that position which it embraces the greatest possible number the magnetic lines, set rotation, following the motion the lines the points greatest attraction. Fig. the armature the generator has progressed one-fourth revolution.position. short reference these figures will suffice understanding their. top view of the same with the field section and' a diagram connections. The revolution the armature the generator between the field-magnets ob­ viously produces the coils alternating currents the intensity and direction which to depend Upon well-known laws. The core is wound longitudinally with two coils, and E', the ends which are respectively con­ nected insulated contact-rings ff, car­ ried the shaft a,,upon which the armature is mounted. 5s.382,280 refer the diagrams, Figs. When acomplete revolution isaccomplished, the conditions existing the start are re-es­ tablished, and the same action repeated for the next and all subsequent revolutions, and in general will now seen that every revolu­ tion the armature the generator produces a corresponding shifting the poles lines, of force around the ring. The disk Fig. The poles will consequently shifted through one half of 65 the ring. The armature set revolve within an . The coil the other hand, having entered field opposite polarity, generates current opposite di­ rection. and ato 8", for illustration the various -phases through which the coils the generator pass when operation, and the corresponding and 5 resultant magnetic changes produced the motor. view elevation and part ver­ tical section motor: Fig. this phase coil B is the neutral position, while coil gen­ erating its maximum current, which the same direction Fig. The result, with the proper connections, would the magnetiza­ tion the ring the poles being the line 20 The same, order connections being observed between the coil and the coil C', the latter when traversed current tend to fix the poles right angles the line of Fig. In Fig. In Fig. In illustration other forms apparatus, by means which carry out invention, I shall now describe the remaining figures of the drawings. This form motor may used place of that shown. results, therefore, that when the 25 generator-coils have made one-eighth re­ volution, reaching the position shown Fig. This effect utilize in producing the rotation body arma­ ture variety ways—for example, apply­ ing the principle above described theappa- ratus shown Fig. the circuitinclud- ing this coil may also include, say, the coils C C the motor, Fig. This phenomenon attribute to a certain inertia resistance inherent the metal the rapid shifting the lines force through the same, which results continu­ ous tangcutial pull upon the disk, causing its rotation. this position coil B' develops less powerful current, but the same direction before. Figs. D cylindrical drum armature-0 re, which, for obvious reasons, should split up as far practicable topreventthe circulation within currents induction.signifi­ cance. 35 Fig. 1the current in the coil practically nil, whereas the coil the same time developing its maximum current, and the means indicated 15 the description Fig. one-half one revolution the armature ofthe generator hasbeen completed, and the resulting magnetic condition the 60 ring shown Fig. The resultant poles will therefore be in the line Fig. Here both coils are generating currents; but the coil B', having now entered the opposite field, is generating current the opposite direction having the opposite magnetizing effect; hence .55 the resultant pole will the line as shown. and the same manner illustrate the phases the generator and ring three- quarters revolution, and Figs. These figures will be readily understood from the foregoing. and 8* the same seven eighths revolution of the generator-arniature. This seems confirmed the fact that circular disk steel more effect­ ively rotated than one soft iron, for the rea­ son that the former assumed poeseoa a greater resistance the shifting the mag­ netic lines. 30 The position the poles will therefore the resultant ofthe magnetizing forcesofthe coils— that say, will advance along the ring to a position corresponding one-eighth the revolution the armature the generator. shown cut away on opposite sides; but this have found not essential effecting its rotation, circular disk, indicated dotted lines, also set in rotation. and 4*illustrate the conditions which exist when the generator-armature has coru- 50 pleted three-eighths revolution. the armature has completed five- eighths revolution. 6a; or, other words, the poles the ring will shifted along five- eighths its periphery. 2, both pairs coils, and O', will trav­ ersed current and act opposition so far the location the poles concerned. have like manner shown the conditions existing each succes­ sive eighth one revolution the remaining 45 figures. Figs. the posi­ tion the coils indicated Fig. At the point indicated the current the coil B is maximum, while nil, the latter coil being its neutral