Nikola Tesla U.S. Patent 1,119,732 - Apparatus for Transmitting Electrical Energy Patent Wrapper Page 19

() 1 7 [ Y Рел с boundaries. bounderies of a circuit of definite linear dimensions and capacity the greatest possible area. The charged surface being large, a considerable quantity of electricity may be stored upon it without the density being excessive, hence a very high gotential may be attained before the dielectric is broken down disruptively. The boundary surface should be symmetrical as otherwise there will be an undue accumula. tion of the charge on some place which will impose a limit to the electromotive force obtainable. In designing apparatus such as illustrated in Fig. 5, for example, I generally calculate the densities and proportion the parts so that the distribution of the surface charge is more or less uniform. Obviously, however, this, while advantageous, is not essential as a much greater density can be allowed on those portions of the circuit which are protected by insulation. It should be stated, furthermore, that the constructive inprovements described are wholly or in part applicable and useful for purposes other than that for which they are mainly intended. 16 .ܐܐ- 371-27 715