The U.S. Patents of Nikola Tesla

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The alternation wil-1 therefore pass way branch I). all these will be observed that there developed one all of the branches circuit from source of alternating currents active (as distin- 130 guished from dead) resistance opposi­ tion the currents one sign, for the pur­ pose diverting the currents that sign through the other another path, but per- . Gis instance what may called, in distinction the others, magnetic” means securing the results arrived in this invention. Around the armatures are coils contained, re­ spectively, the circuits and The 353 connections and electrical conditions this ease are similar those Fig.. The latter may, however, dispensed with and ar- 40 mature with closed coil substituted. one of the paths, I), are included the de­ vices operated the current. have also shown special form induction de­ vice for this purpose. 2is dispensed 70 with and the saturation the core coils E obtained from the permanent magnets. The armatures are made of thin lanrinre soft iron steel, and the amount magnetic metal which they con­ tain calculated that they will fully or 65 nearly saturated the magnets. illustrated. The armatures are rotated in synchronism with the alternations from the source The winding position the armature-coils such that current given direction passed through both armatures io would establish one poles similar those in the adjacent 'poles-of the field and the other poles unlike the adjacent field-poles, as indicated the drawings. alternating-current genera­ tor; the line wires circuit.coils N'. armature -the magnetic circuit the induction device practically no closed; hence there w rill the greatest oppo­ sition the passage current through coils 2T . 5,in one the branches, as are two coils M', wound laminated cores, and the other branches are similar .3 413, ably mounted the same shaft, and are ad­ justed relatively one another such man­ ner that when the self-induction one branch, as maximum the other branch is ; minimum. In the position shown—that is, with the coil R' parallel with the convolutions the pri­ maries M'—practically the whole current 50 will pass through branch because the self- induction coils 31' maximum. are the cores, 100 formed with pole-pieces, upon which are wound the coils Between these pole- pieces are mounted right angles one an­ other the magnetic armatures OP, preferably mounted the same shaft and designed 105 be rotated synchronism with the alterna­ tions current. SjUichronism with the alternations current from the main source and for this purpose a commutator was employed. and are two strong 60 permanent magnets provided with armatures Y W', respectively. So, also, branch are translating de­ vices and branch induction de- 95 vice its equivalent that diverts through C impulses opposite direction those di­ verted the device branch IF. For example, in Fig. If, therefore, the armature and coil rotated at proper speed relatively the periods or alternations the source the same results 55 are obtained the case, Fig. Referring Fig. When one the arma­ tures line with the poles-or the posi­ tion occupied by. Either pair group paths simi­ lar the previous dispositions with the elec­ trical source induction device one branch only, while the two groups taken to- 85 getlier form the obvious equivalent the cases which induction device gener­ ator included both branches. 3. Fig. the 90 other branch, D', induction device that opposes the current impulses one di­ rection and directs them through the branch D. In the illustrations heretofore given have in each instance shown the two branches or paths containing the translating induction 75 devices derivation one the other; but this not always necessary. the previous case illustrated each branch and contained one more primary coils, the secondaries of 35 which wei\j periodically short-circuited in. subdivided laminated arma- 45 ture O', carrying closed coil R', rotatably supported between the coils hi', shown. except that the currént sourcelof Fig. the same time, the magnetic circuit the other induction 115 device being broken the position the armature there will less opposition to the current coils which will shunt the current from branch reversal the current being attended shifting the 120 armatures, the opposite effect produced. the like,poles are presented, shown circuit 15 the'condition that closed secondary upon primary, the position least in­ ductive resistance: hence given alternation of current will pass mainly through A half-revolution the armatures produces an 20 opposite effect, and the succeeding current im­ pulse passes through Using this figure as an illustration, evident that the fields N M may permanent magnets independ­ ently excited and the armatures driven, 25 the present case, produce alter­ nate currents, which will set alternately impulses opposite direction the two branches which such case would in­ clude the armature-circuits and translating 30 devices only. any given point the circuit form two paths, 80 as IF, and another point two paths, as C O'. There are many other modifications the means methods carrying out inven­ tion but have not deemed necessary here­ in specifically refer more than those de- 125 scribed, they involve the chief modifica­ tions the plan. plan alternative with that shown in Fig. In Fig