Nikola Tesla - Free-Energy Devices

DIRECT CURRENT ARC LIGHTING 8YSTKM. 4f>7taclied plan view of the pole pieces and armatures upon thefriction clamp, and Fig. 282 is a section of the clamping tube.M is a helix of coarse wire in a circuit from the lower carbonholder to the negative binding screw . N is a helix of fine wirein a shunt between the positive binding screw -\-and thenegative binding screw The upper carbon holder s . is a parallelrod sliding through the plates s' s 2 of the frame of the lamp,and hence the electric current passes from the positive bindingFIG. 279,FIG. 281. FIG. 280.post _j_ through the plate s2 carbon holder, s,and upper carbonto the lower carbon, and thence by the holder and a metallicconnection to the helix M.The carbon holders are of the usual character, and to insureelectric connections the springs I are made use of to grasp theupper carbon holding rod s,but to allow the rod to slide freelythrough the same. These springs / may be inadjustedtheirpressure by the screw m, and the spring / may be sustained upon