Nikola Tesla - Free-Energy Devices

HIQII FREQUENCY AND HIOII POTENTIAL CURRENTS. 313speed. On the inside of the pulley, but disconnected from thesame, was supported a thin disc h (which is shown thick for thesake of clearness), of hard rubber in which there were embeddedtwo metal segments s s with metallic extensions e e into whichwere screwed conducting terminals t t covered with thick tubesof hard rubber 1 1. The rubber disc h with its metallic segmentss ,9,was finished in a lathe, and its entire surface highly polishedso as to offer the smallest possible frictional resistance to the motionthrough a fluid. In the hollow of the pulley an insulatingliquid such as a thin oil was poured so as to reach very nearly tothe opening left in the flange/, which was screwed tightly on thefront side of the pulley. The terminals t t,were connected to theopposite coatings of a battery of condensers so that the dischargeoccurred through the liquid. When the pulley was rotated, theliquid was forced against the rim of the pulley and considerablefluid pressure resulted. In this simple way the discharge gapFIG. 168a. FIG. 168b.was filled with a medium which behaved practically like a solid,which possessed the quality of closing instantly upon the occurrenceof the break, and which moreover was circulating throughthe gap at a rapid rate. Very powerful effects were produced bydischarges of this kind with liquid interrupters, of which a numberof different forms were made. It was found that, as expected,a longer spark for a given length of wire was obtainablein thisway than by using air as an interrupting device. Generallythe speed, and therefore also the fluid pressure, was limitedby reason of the fluid friction, in the form of discharger described,but the practically obtainable speed was more than sufficient toproduce a number of breaks suitable for the circuits ordinarilyused. In such instances the metal pulley P was provided with afew projections inwardly, and a definite number of breaks wasthen produced which could be computed from the speed of