The U.S. Patents of Nikola Tesla

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Fig. This effect sets rotation the armature ow­ ing the attractive force between the shell I30 and the poles the armature, but inasmuch as the coils this ease move relative the shell field-magnet the movement the coils the opposite direction the pro­ gressive shifting the poles. Fig. The ends of these coils are connected, respectively, in- 6. These magnets poles are wound with insulated coils, those diametrically opposite to each other being connected pairs to produce opposite poles each pair. io 11. The mode opera­ tion substantially the same the previ­ ous cases, the currents traversing the coils ico the motor having the effect turn the disk D.. The ends 125 the armature-coils are connected two pairs of contact-rings, Fig. generator for driving this motor may use the device shown Fig. This 50 leaves six free ends, which are connected to the terminals T'T" T". In the preseut instance consists afield- 130 magnet, and armature, with two coilsat right angles, the ends which are con­ nected four contact-rings, 6', carried by its shaft. That shown consists 90 a revolving permanent electro maguet, A, and four independent stationary magnets, P P', wound with coils, those diametrically op­ posite each other being connected series and having their ends secured the termi- 95 nals From these terminals the cur­ rents are led the terminals the motor, as shown the drawings. Fig. The gen­ erator for this motor has this instance an armature, wound with three coils, K K. The application this principle to systems involving multiple circuits generally will understood from this apparatus. The diametrically opposite pairs coils are con­ nected series and the free ends couuected 12c four terminals, 10, the rule followed in connecting being the same hereinbefore ex­ plained. This mode carrying out the invention has the advantage dispensing with the slid­ ing contacts the system. 15 is diagrammatic representation modifi- fied disposition invention. 12. 15, mounted turn freely inside twostationary coils, N", placed at right angles one another. end 110 view such motor. Fig. diagram the cir­ cuit-connections. The ring suitably mounted on shaft, a', between the poles The contact-rings each pair generator-coils are connected these the motor, respect­ ively, means contact-brushes and the 20 two pairs conductors and L', in­ dicated diagrammatically Fig. and 16, Fig. 17, 18, and 19. The variations the strength and di- 65 rection the currents transmitted through these circuits and traversing the coils the motor produce steadily-progressive shifting of the resultant attractive force exerted by the poles upon the armature and conse­ quently keep the armature rapidly rotating. Fig. the field-magnet ofthe motor consists ofa ring, preferably 115 thin insulated iron sheets bands with eight pole pieces, G', and corresponding recesses, in which four pairs coils, are wound. this case disk, magnetic metal, preferably 80 cut away opposite edges, shown dot­ ted lines Fig. The field the mo­ tor Mis produced six magnetic poles, G', 45 secured projecting from ring frame, H. 75 Referring, now, Figs. 35 Other arrangements the coils both gen­ erator and motor are possible, and greater number circuits may used, will seen in the two succeeding figures. This represents annular ring arma­ ture, surrounded four coils, F', of which those diametrically opposite are con­ nected series, sothat four free ends are left, which are connected the insulated contact- 15 rings 6'. This shell preferably formed with slot opening, but may be continuous, shown the dotted lines, ,5 and thisevent ispreferably made steel. 14 end view the generator with its field-magnets section. The coils are preferably wound frame, insulating 85 material, and their ends are connected the fixed terminalsTTT"F. These rings are connected those the motor in proper order means collecting-brushes and six wires, forming three independent cir­ cuits. The generator is a representative that class alternating- current machinesin whichastationary induced element employed. Reference therefore had Figs. The gener­ ator for this motor may any suitable kind to produce currents the desired character. 70 The peculiar advantage this disposition is in obtaining more concentrated and power­ ful field. similar view the generator with the field-magnets in section, and Fig. The circuit-connections are es- . The armature, which mounted rotate between the poles, is cylinder disk, wrought-iron, mounted the shaft Two segments of 55 the same are cut away, shown. Now it is obvious from consideration the preced­ ing figures that the rotation the generator­ ring produces currents the coils F', which, Í25 being transmitted the motor-coils, impart to the core the latter magnetic poles constantly shifting whirling around the core. armature, with two coils, EEf, at right angles each other, mounted ro­ tate side the field-magnetR. It remains, then, show how both elements may be w-ound with coils. 19. It also desirable that this shell should be divided similarly the armature and for similar reasons.381,968 3 which constitutes the field-magnet, other element the motor. a horizontal cross section the motor. diagrammatic illustration a 40 motor and generator constructed and con­ nected accordance with invention. In the forms motor above described only ics one the elements, the armature the field- magnet-, provided with enérgizing-coils. sulated contact-rings e". Fig.' K", sixty degrees apart