The U.S. Patents of Nikola Tesla

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Serial H o. 639, 227,1 have shown and de-- scribed device for making and breaking an electric circuit comprising rotary receptacle containing conducting fluid and terminal mounted within but independently the re-; tS ceptacle and caused the rotation the latter make and break electrical contact with the fluid. may. The invention comprises features con­ struction which this object practically secured and certain improvements applicable to this and other analogous devices, will be 30 more fully hereinafter set forth. The same bracket also carries series com­ mutator segments . 609,247, dated August 16, 1898. 673,558, (H om odel,) To all whom may coTicern:, Be known that!, Nikola Tesla, tlie. The inclination ofthe axesofrotation necessary for this result may substantially that shown and should not materially greater, for the reason that especially advantageous to preserve the spindles, and bearings nearly as practicable vertical account lesser friction and easier lubrication. The operative portions the circuit-con­ trolling mechanism are contained closed cylindrical receptacle iron steel, mounted spindle suitable socket 40 support Cto permit freely and rap­ idly rotated. suitable pro­ vision made oppose prevent the rota­ tion the spindle during the rotation of the receptacle. N Y. A metal stud set insulated bolt W, projects into the cup through packed opening its cover.upon which bear 50 brushes these parts being arranged con­ stitute electromagnetic motor with sta­ tionary field and rotating armature. ;be stated that any cither suitable means may be employed rotate the receptacle and the fluid. top plan view of the same with the top cover the recep- 35 tacle removed. As means producing the proper rota­ tion the receptacle have shown field- 45 magnet mounted secured the base D, and armature supported bracket G from the under side the receptacle A. have devised for this pur­ pose the following: The spindle held its bearings an angle the vertical,and weightK secured eccentrically the spindle and tends hold the said spindle always one position. shield or screen incloses the vanes, except the side adjacent the inner periphery the receptacle , A small quantity conducting fluid is placed the receptacle, and order se­ cure good electrical connection between the vanes and terminal the outside the receptacle small mercury-cup metallic contact with the vanes through the bracket L and socket secured the weight K. borough Manhattan,in the city,county, and State New York, have invented certain new S and useful Improvements Circuit-Control-; lers, which the following specification, reference being had the drawings accompa­ nying and forming part the same. In the accompanying drawings, Figure is vertical central section the improved cir­ cuit-controller, and Fig. Attached the spindle weight an insulated bracket carrying standard or socket which mounted antifriction- bearings spindle Secured this latter is plate with radial arms from which de­ pend vanes blades with projections Q extending radially therefrom.■■■■ , In the spindle and concentric with its axis spindle bearings specially con­ structed reduce friction order that the spindle may little possible influ­ enced the rotation the main spindle and receptacle carried thereby. The socket secured or forms part base stand D. '. ApplicationfiledM aroh12, 1898. The invention which present appli­ cation based improvement devices 2o this particular class, and has primarily as its object the production circuit-con­ troller which independently-mounted terminal operated similar manner a rotating body conducting fluid may in- 25 closed within gas-tight receptacle. In application filed June 3, io 1897, Serial No. ELECTRIC-CIRCUIT CONTROLLER.nited States 'Patent Office. To operate the apparatus, the receptacle is 55 60 65 70 75 80 85 90 95 100 . SPECIFICATION forming part Letters Patent No. One terminal the cir- cuit-controlling mechanism will thus any part the metal receptacle and the other the insulated bolt The apparatus maybe connected circuit connecting tlie wires the circuit brush bearing on the bolt and binding-post contact with the base D