The U.S. Patents of Nikola Tesla

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It also importance that such makes and breaks,and more especially the former,should 40 positive and abrupt, and from considera­ tions economy and practicability es­ sential that the apparatus should cheaply constructed, not liable derangement, and capable prolonged use without attention 45 adjustment.! To all whom concern: Beit known that citizen of the United States, residing New York, in the county and State New York, have in- 5 vented certain new and useful Improvements in Electric-Circuit Controllers, which the following specification, reference being had the drawings accompanying and form­ ing part the same.” In order that the full advantages sys­ tem may realized and the best practical results secured, the said circuit -controller should capable fulfilling certain require- 35 ments, the most important among which is the capability effecting extremely-rapid interruption and completion the circuit. SerialH o, 683,525. A pplicationfiledJune 8j1897.United States Patent Office. SPECIFICATION form ing part Letters atent No. XI IvOLA YORK, Y. R enew edJune15,1898. io previous patents granted have shown and described methods and apparatus for the conversion and utilization electrical currents very high frequency based upon the principle charging condenser cir- 15 cuit possessing capacity and discharging the samegenerally through the primary trans­ former, the secondary which constituted the source working current and under such conditions yield vibrating rapidly- 20 intermittent current. 60 In the preferred construction the appa­ ratus the receptacle contains both conduct­ ing and non-conducting fluid, the former being the heavier, and maintain the termi­ nals such relations that the electrical con- 65 nection between them made and broken by the successive immersion the contact- points into and their withdrawal from the conductingthrough the non-conducting fluid. ELECTRIC-CIRCUIT CONTROLLER. With the object attain­ ing these results,which háve never heretofore been fully attained any form mechan­ ical circuit-controller which aware, I devised and developed the circuit-controller 50 which forms the subject present appli­ cation and which may general terms de­ scribed follows: ,-The device its typical embodiment com- :prises essential elements two terminals— ;one with peripheral contacts alternating with 55 ;insulating-spaces, such exemplified a stelliform disk and which capable rota­ tion, and the other rotatable receptacle con­ taining fluid which more less the first-named terminal immersed. In some the forms apparatus which I have heretofore devised for carrying out this v invention have employed mechanism for making and breaking electric circuit or 25 branch thereof for the purpose charging and discharging the condenser, and pres­ ent application based upon novel and improved form device for this purpose, which maybe generally styled circuit-con- 30 troller. (H om odel. These relations are. best maintained such 70 construction the receptacle that the dis­ tribution the two fluids necessary for the proper operation the device may pre­ served centrifugal action and the rotation of the other terminal effected the move- 75 ment the fluid fluids relatively thereto. The motion the fluid within the drum causes the disk rotate and its projections or vanes make and break the circuit with . A central opening formed one side 95 the drum, through which enters arm car­ rying disk with peripheral projections or vanes which when the drum rotated pro­ ject sufficient extent_. 609,251, dated ugust 16, 1898. To secure the conditions necessary for the accomplishment the objects the inven­ tion, various mechanical expedients may be resorted to; but the best and mostpracticable 80 device for the.purpose which aware is hollow wheel drum mounted to be rotated any desired speed and contain­ ing conducting fluid, such mercury or an electrolyte, which the rotation the 85 drum thrown centrifugal force outward to the inner periphery the same, and a sufficient quantity ofa lighter non-conducting or poorly-conductive fluid, such water or oil, which the centrifugal action main- 90 tained the surface the heavier con­ ducting fluid and tends prevent the occur­ rence arcs between the contact-points and the conducting fluid.toward into the conducting fluid effect the makes 0 breaks the circuit