Nikola Tesla U.S. Patent 1,119,732 - Apparatus for Transmitting Electrical Energy Patent Wrapper Page 95

} 1 12971 Leyden jars at the extreme ends of the coatings where the density is greatest, and such an electrode as that of Kinraide would be useless for the purpose of the applicant. It will be observed that the rod a is of small diameter. and will therefore permit leakage at a comparatively small pressure. Indeed, the attainable maximum pressure will simply depend on the radius of curvature of that rod and the fact that the patent illustrates a very large surface shows that Kinraide only desired to modify the action at the point and had no idea of anything else. If the Leyden jar circuit were arranged in accordance with Tesla's invention, all parts of the circuit would be so constructed and arranged that no leakage could take place anywhere. The official letter quotes Ganot's Physics in which a coil with clo se turns is shown in the discharge circuit of a Leyden jar. It is true that there might by no leak on that coil, itself, if it is of sufficient diamter but its ends, being exposed and the conductor being of small radius of curvature, will permit leakage and limit the tension to a small value. Furthermore, loss will take place in other parts of the circuit. The same holds true of all the other references. The Tesla Electrode or Coil is by construction and arrangement such that it may be likened to a stopper closing the only hole left open in a reservoir, while a device such as described in the instances cited tay close only one of many holes left in a reservoir and is therefore of no effect. In our previous letters every effort was made to point. out this and other distinctions and it was thought that in 97 -2791