Nikola Tesla - Free-Energy Devices

DIRECT CURRENT ARC LIGHTING SYSTEM. 455active wire is reduced to a minimum, and the coils at eachside of the plates that are in contact with the brushes are practicallyequal. In this way the electrical efficiency of the machineis increased.The commutator platest are shown as outside the bearing b ofFIG. 275. FIG. 276.the armature shaft. The shaft H is tubular and splitat the endportion, and the wires are carried through the same in the usualmanner and connected to the respective commutator plates.Thecommutator plates are upon a cylinder, w, and insulated, and thiscylinder is properly placed and then secured by expanding* thesplit end of the shaft by a tapering screw plug, v.FIG. 277.The arc lamps invented by Mr. Tesla for use on the circuitsfrom the above described dynamo are those in which the separationand feed of the carbon electrodes or their equivalents is accomplishedby means of electro-magnetsor solenoids in connectionwith suitable clutch mechanism, and were designed for the purpose