The U.S. Patents of Nikola Tesla

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box case con- 60 tabling the eonrtensers, which the termi­ nals arc 7t/v respectively.coils and the circuit- controller switch may employed to bring cither both the coils into this circuit, may desired. Now order secure apparatus of this kind high frequency possible and 45 the advantages resulting therefrom subdi­ vide the condenser necessary for storing the energy required into integral parts provide independent condensers, ami employ means fur charging1 'said condensers multiple and i 50 discharging them series through the pi-i- i m (he transformer.useful Improvements *in Apparatus for Producing Currents High Frequency, which the following specili- eution, reference being had the drawings accoinpanying and forming part the io same. 'The invention upon which present ap­ plication based improvement appa­ ratus for the conversion, electrical currents of ordinary character—stieli, for instance;las i-5 are obtainable from the mains municipal electric light and power systems and either continuous iiUernating—into•ciiiTents of very high frequency iiiid potential.A Tksí. These devices are intended 70 be inclosed suitable box case, and may be very greatly modilied- construction and relative arrangement. this case is mounted small electromagnetic motor 1>, by the shaft which operated the circuit- controller Upon the said controller bear 65 brushes, shown 1> ' I)” R F are self-induction coils placed beside the motor.. 609,292. Around the break or 35 point interruption have arranged con­ denser, into which the circuit discharges when interrupted, and this condenser turn made discharge through circuit contain-' ing the primary transformer, and such 40 character that the condenser-discharge ill be the form extremely rapid succes­ sion impulses. ApplicationfiledOctober19,1896. NIKOLA TESLA, OINNKW YORK, V.' secure this re- 1 sub wii hnut -unduly'complienting tin- uppa- ! rat matter very considerable diffi­ culty, but have accomplished means of the apparatuswhichf shall now proceed 55 to describe reference tlfe drawings. Referring now Fig.a, citi- Zfiiol'thc UnitedStatos,iosidiiigatNew York, in tli<‘county and Stale <ifNow York, have in- ^ vented certain newand. 583,953, dated June 1897. Figuře side elevation < > f the appara­ tus which employ, and Fig. APPARATUS FOR PRODUCING CURRENTS HIGH FREQUENCY. 0i;S,17ii; but the de­ scription the invention which follows the 25 illustration con lined forjn apparatus designed for converting continuous di­ rect current into 011c high-frequency. ‘Nomodel. v. ' The improveihent applicable generally to so apparatus the kind heretofore invented lo­ me and'-more particularly described United States Letters Patent granted Sep­ tember 22, 1s;nl, Xu. The circuit-controller, however, should conform general princi­ ple construction that hereinafter de- 75 Scribed far 1 1 1 2 * 3 *be necessary se- .these plates maybe considered belonging three sets classes, first, the plates for what may considered the positive bfushes- 90 D I)'1 'in one row, electrically connected to­ gether, and the corresponding plates for what may similarly considered t-honeg­ ative brushes the other ro„\v; second, the plates which liein both rows, and hence 95 are conveniently made single pieces ex­ tending across the controller, and, third, the idle spacing plates which are interposed in each row between the other two sets. The angle between adjacent plates the same 100 : set equal . Above these the transformer, composed; essent ially, primary and a secondary 11. In the several forms apparatus for this pur­ pose which have devised and heretofore de- 3c scribed lone employed circuit high self- induction connected with the mains from a suitable source current and containing some form éireuit-controller for periodic­ ally interrupting it. IThe brush one set connected with one .' Tn <ili ■ Jic known that XlKoi.cure the operation pointed out.BESTAVAILABLE COP’. The circuit-controller built insii- 85 luted plates segments, upon which the posi­ tive and negative brushes bear, and . SPECIFICATION forming part Letters Patent No. U nited States Patent Office. Serial N o. designate the mains from suitable source supply, be­ tween which circuit formed, including 80 theself-induction. diagram of the circuit connections, p: Referring Fig.to the angle displacement bc- i lween adjacent, brushes the same sign, and i obviously there may two more each