The U.S. Patents of Nikola Tesla

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In cid tally certain constructions, other causes influence variation the 50 strength the induced currents. T vary eed otor rate 30 etw een inim and axim rates, th core and coils are turned eith i­ rection ten hich produces e­ sired result, for its norm osition the con­ volu tion coil brace axim um 35 num ber lin force, all hich act ith th sam effect upon said coil; ence ill d eliver its axim current; but turning the coil out its osition axim ef­ fect the num ber lines force braced by 43 dim inished. When the induced coil generating its maximum current,the maximum amount energy the primary coils absorbed; but the induced coil turned from its normal position the 125 self-induction the primary coils reduces the expenditure energy and saves power. The motor will also reversed reversing the position the coil with reference the 115 coils and thereby reversing the phases of the current produced the generator. As before stated, the mechanical construc­ tion the device may greatly varied; but 70 the essential conditions the invention will be fulfilled any apparatus which the movement the elements with respect one another effects the same results varying the inductive relations the two elements 75 manner similar that described. This will produce rotation the motor op­ posite direction. In illustration, let represent one my generators having two independent coils, P' and P", the armature, and diagram of a motor having two independent energizing- 'ioo coils sets coils, R'. It obvious that practice either coils 0 C coil may used primary second­ ary, and well understood that their rela- 13c . The second- 105 ary coil the regulator includes the other coils, the motor. One the main advantages this plan 120 regulation its economy power. ctive effect ere­ fore paired, and current delivered by coil ill continue inish proportion to angle hich coil turned ­ til, after assing through angle ety 45 degrees, the con volu tions the coil ill at righ angles those coils and ­ d ctive effect reduced inim . exam ­ p le, present case ill observed that the first ovem ent coil certain p ortion its convolutions are carried beyond th lin the direct influence the lines of 55 force, and that the agnetic path circuit for said lin paired; hence ctive effect ould reduced. This changes the direction the movement the shifting poles which the armature follows. that after m oving through certain angle, hich ob­ viou sly determ ined relative dim ensions 60 bobbin coil iagonally-opposite p ortions the coil ill sim ltan eou sly ­ cluded the field, but such ositions that th lin hich produce current-im pulse in one ortion the coil certain direction 65 ill produce the iagonally-op posite r­ tion corresponding impulse the opposite direction; hence portions the current will neutralize one another. This form regulator is also applied with great advantage sys­ tem utilizing alternating currents,in which 90 the magnetic poles the field motor are progressively shifted means the com­ bined effects upon the field magnetizing- coils included independentcircuits,through which pass alternating currents proper or- 95 der and relations each other. If the regulator its normal positioner that which its magnetic circuit most nearly closed, delivers its maximum induced 25 current, the phases which correspond with those the primary current that the motor willrun though both field and arma­ ture were excited the main current.390,820 electro agnetic otor rovid ith | arm ature, com utator and field-m ag- nets ell know such motor,, if its field-m agnets’ cores to 5 sulated sections, ractically er­ ated alternatin current; but using m regulator ith such otor clu one elem otor ly— say arm ature- coils— ain circu generator, io aking connections through brushes and the com utator the usual ay. also in clu one elem ents the regulator— say stationary coils— sam circuit, and the circu ith secondary mov- [5 able coil regulator connect the field-coils otor. This regulator, however, has another valuable 80 property its capability reversing the mo­ tor, for the coil turned through half­ revolution the position its Convolutions relatively the two coils and the lines of force reversed, and consequently the 83 phases the current will reversed. While the secondary coil the regulator is in its normal position produces its maxi­ mum current, and the maximum rotary effect no is imparted the motor; but this effect will be diminished proportion the augle at which the coil the regulator turned. prefer use flexi­ b conductors ake the connections from th secondary coil regulator, there­ b avoid use slid contacts rings 20 ith terferin ith the requisite ove­ m ent core E. It may also stated that the core not indispensable the operation the regula­ tor; but its presence obviously beneficial. One the cir­ cuits from the generator, S', includes one set, R', the energizing-coils the motor, while the other circuit, includes the primary coils the regulator