Nikola Tesla U.S. Patent 1,119,732 - Apparatus for Transmitting Electrical Energy Patent Wrapper Page 31

JL) LD LICEJ C3 C3 CLUJ GJ GJ GJU à' (Sub Space) Sub. H сва (1 vifu To all whom it may concern:- Be it known that 1, Nikola Tesla, a citizen of the United States, residing at the Borough of Manhattan, in the City, County and State of New York, have in ven ted certain new and useful improvements in apparatus for transmitting electrical ere rgy through the natural media, of which the following is a specification, reference being had to the drawing accompanying and forming a part of the same. In endeavoring to adapt currents or discharges of very high tension to variqus valuable uses, as of energy through wires from central plants to distant places of consumption, or the production of powerful effects or disturbances, perceptible at great distan ces through the natural media, 1 have encountered difficulties in confining the electricity to the highly charged conductors and preverting its leakage over the supports, or its escape in to the ambient air, which takes place then the electrical surface den sity reaches a certain value. the transmission The intensity of the effect or disturbance which may be produced by a transmitting circuit, one end of which leads to the ground and the other to a free or elevated terminal, is proportionate to the quantity of electricity displaced, which is determined by the product of the capacity of the terminal and the pressure and frequency of the currents employed. To produce an electrical movement of considerable magnitude it is necessary to charge the terminal as highly as possible, for although a great quantity of electricity may be displaced by a terminal of large capacity charged to 31 271-1727