The U.S. Patents of Nikola Tesla

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Application filedMarch 21,1901. SPECIFICATION forming part Letters Patent No. electricity, the discharge being particu­ larly noticeable when the conductor upon which the rays impinge negatively electri­ fied. very impor­ tant,particularly view the fact fhatelec- 60 trical energy generally supplied very - slow rate the condenser, construct ‘the same with the greatest care. 577,671. the rays supposed streams 10c matter generally convey positive charge to the firstcondenser-terminal,which connect­ e r f. M . 5-2,154. Obviouslythe above precautions should the more rigor­ ously observed the slower the rate charg- 75 ing and the smaller the time interval during which the energy allowed accumulate in the condenser. NIKOLA TESLA, NEW YORK, Y. In practice have found that the best results 70 are obtained with condensers treated the manner described patent granted me February23, 1897, No. It well known that certain radiations— such those ultra-violet light, cathodic, ■ Roentgen rays, the like—possess the prop­ erty charging and discharging conductors . 685,958, dated November 5,1901. own experiments and 25 observations, however, lead conclu­ sions more accord with the theory hereto­ fore advanced that sources snch radiant energy throw off with great velocity minute particles matter which are strongly 30 electrified, and therefore capable charging an electrical conductor, even not may at any rate discharge electrified conduc­ tor either carrying off bodily its charge or otherwise. The insulated plate con­ ducting body should present large sur­ face practicable the rays streams 80 matter, having ascertained that the amount of energy conveyed per unit time is under otherwise identical conditions propor- tionatetotheareaexposedjornearlyso. 35 present application based upon dis­ covery which have made that when rays or radiations the above kind are permitted to fall upon insulated conducting body connected one the terminals con- 40 denser, while the other terminal the same is made independent means receive or to carry away electricity, current flows into the condenser long the insulated body is exposed the rays, and under the cbndi- 45 tions hereinafter specified indefinite ac­ cumulation electrical energy the con­ denser takes place. To all whom concern: Be known that acitizen of the United States, residing the borough of Manhattan, the city, county, and State 5 New York, have invented certain new and useful Improvements Methods Utilizing Radiant Energy, which the following a specification, reference being had the draw- ings accompanying and forming part the io same.quality mica dielectric, tak­ ing every possible precaution insulating 65. This energy after suit­ able time interval, during which the rays are allowed act, may manifest itself pow- 50 erful discharge, which may utilized for the operation orcontrol mechanical elec­ trical devices rendered useful many other ways. Iu applying discovery provide con­ denser, preferably considerable electro- 55 static capacity, and. Fur­ thermore, the surface should clean and 85 preferably highly polished amalgamated.nited States Patent Office.such properties conditioned that its means electricity the required sign will be supplied the terminal. the armatures, that the instrument may withstand great electrical pressures without leaking and may leave perceptible electri­ fication when discharging instantaneously. connect one its ter­ minals insulated metal plate other conducting body exposed the rajrs or streams radiant matter. 8erial No. The second terminal ármature the con­ denser may connected one the poles of battery otheg source electricity or to any conducting' body object whatever 90 . These radiations are generally consid­ ered ether vibrations extremelysmall 20 wave lengths, and explanation the phe­ nomena noted has been assumed some authorities that they ionize render con­ ducting the atmosphere through which they are propagated. simple way of supplying positive negative electricity to the terminal connect the same either 95 an insulated conductor, supported some height the atmosphere, grounded conductor, the former, well known, fur­ nishing positive and the latter negative elec­ tricity. use prefer­ ence the best