The U.S. Patents of Nikola Tesla

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(N om odel. Its construction detail follows: D metal plate with central hub D',which is keyed clamped the shaft The plate 76 is formed with segmental extensions corre­ sponding, number the waves cur­ rent which the generator delivers. 598,552. These segments are:preferably cut away, leaving only rims frames, one the radial sidés 75 of which are ,secured bent'metal plates E, which serve vanes maintain circula­ tion air when the device operation. The circuit-controller mounted part on extension the shaft the gener- 65 ator, and part the frame the same, or stationary sleeve surrounding the shaft. This invention improvement ap­ paratus for producing electrical currents of high frequency accordance with the gen­ eral plan heretofore invented and practiced 15 and based upon the principle charg­ ing condenser circuit possessing capacity and discharging the same through circuit of low self-induction, that rapid electrical oscillations are obtained. The latter maybe adjusted bythis rod, and when in proper position may held therein by screwing the rod down into depression in the sleeve bearing, shown Fig. Fig. this'figure represents any source alternating current .extend metallic terminal plugs with their ends the plane the conducting segmental disk and adjustable radially to­ ward and from the edges the segments. Through the sides the box and through insulating-gaskets IT, when the material 95 the box not sufficiently good insulator, . use circuit-controller special character in which the continuity the paths for the current established intervals the pas- 3 sage sparks across dielectric. A designates Fig..) To all whom concern: Be known that Nikola Tesla, citi­ zen the United States, residing New York, the county and State New York, 5 have invented certain new and useful Im­ provements Apparatus for Producing Elec­ trical Currents High Frequency, which the followingis specification, reference be­ ing had the drawings accompanying and io forming part the same. section the controller Fig. Fig. The segmental disk and vanes are contained within close insulated box case mount- 80 ed the bearing the generator, any other proper way, but capable of angular adjustment around the shaft. To facilitate such adjustment, screw-rod F', provided with knob handle, shown 85 passing through the wall the box. SPECIFICATION form ing part Letters atent No. 568,180, dated September . 100 This similar devices are employed carry out the invention above referred the ,manner illustrated Fig. ApplicationfiledJuly9,1896. generator having a commutator and brushes bearing 60 thereon, and also collecting-rings from which alternating current taken by brushes the well-understood manner. APPARATUS FOR PRODUCING ELECTRICAL CURRENTS HIGH FREQUENCY. Figs. NIKOLA TESLA, NEW YORK, Y. Referring the drawings, which illustrate in its preferred form the improvement above 50 referred to, Figure view, partly ele­ vation and partly section, generator arranged give alternating current with the circuit-controller mounted its shaft. secure this re- 20 suit, employ some means for intermittently charging the condenser and for discharging it through the circuit low self-induction; and among the means which have hereto­ fore employed for this purpose was me- 25 chanical contact device which controlled both the charging and the discharge circuit in such manner that the condenser was alter­ nately charged the former and discharged into the latter. In carrying out present improvement , employ circuit-controller containing two terminals sets terminals movable with respect each other into and out prox- 40 imity, and provide means whereby the in­ tervals between the periods close approxi­ mation, during which the spark passes, may be adjusted that when used system supplied source alternating current 45 the periods make and break maybe timed with reference phase the current wave or impulse. 1 on line a;ccof said figure. SerialN o. and are sectional views of a modified form circuit-controller. 30 present improvement consists ap- pai’atus for effecting the same result'by the . Air- 90 passages are provided opposite ends of the box, through which air maintained in circulation the action the vanes. diagram 55 illustrating the system apparatus a whole