. The inventions : researches and writing of Nikola Tesla, with special reference to his work in polyphase currents and high potential lighting . Fig. 135. wire, and also for turning it in any ])ositi()n when it becomesnecessaiv to present a fresh discharging surface. Two stoutstrips of hard rubber r k, with planed grooves g g (Fig. 136) to fitthe middle ])orti()ii of the pieces c c, serve to clamp the latterand hold them flrndy in position by means of two bolts c c(of which oidy one is shown) ])assing through the ends of thestrij)s. in the use of this kind of discharger I have found three pri
. The inventions : researches and writing of Nikola Tesla, with special reference to his work in polyphase currents and high potential lighting . Fig. 135. wire, and also for turning it in any ])ositi()n when it becomesnecessaiv to present a fresh discharging surface. Two stoutstrips of hard rubber r k, with planed grooves g g (Fig. 136) to fitthe middle ])orti()ii of the pieces c c, serve to clamp the latterand hold them flrndy in position by means of two bolts c c(of which oidy one is shown) ])assing through the ends of thestrij)s. in the use of this kind of discharger I have found three prin-cipal advantages over the ordinary foim. First, the dielectricstrength of a given total width of air space is greater when agreat many small air ga])S are used instead of one, which permits. Km. i;{(;. •I working with ;i >iiiMlhr hligth of air ga|>, aii<l thai mcaiissmalhr loss and h-ss dclcrioratioii of ijic uuMal; si-coiidly, byreason of splitting the are up into .smaller ares, the |»olishedsnrlaees are niadr lo last niiieh jon^-er; and, I liii-(||\, t he appa- 312 TNVENTKtM^ Oh ratus alloids some known from the expeiimentsof Sir AVilliam Thomson to rcipiire a certain electiomotive forceto ])e bridged \)\ the spaik. It should, of course, he rcmemhrivd that the sjiarkiiiL;- <listanceis much aces the experimenter has a rouijh idea of theelectromotive force, and he finds it easier to repeat an experi-ment, as lie has not the trouble of settin»j the knobs again andagain. With this kind of discharger T have
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Keywords: ., bookcentury1800, bookdecade1890, bookidinventionsre, bookyear1894
