. The inventions : researches and writing of Nikola Tesla, with special reference to his work in polyphase currents and high potential lighting . ll receive a fresh impetus, and vast possibilities areagain opened np. Mr. Tesla wjis wvy iiiiicli Ilatccl onci- his latest achievements,and said that he hoped that in the hands of practical, as well asHcientilic men, the (Unices described by him wonld yield importantivsnlts. He laid H|)ecial stress on the Facility now alVorded forinvestigating the etldc^t ol mechanical \ il>ralion in all directions,ami also showed that he lia<l obserNcd a ninn
. The inventions : researches and writing of Nikola Tesla, with special reference to his work in polyphase currents and high potential lighting . ll receive a fresh impetus, and vast possibilities areagain opened np. Mr. Tesla wjis wvy iiiiicli Ilatccl onci- his latest achievements,and said that he hoped that in the hands of practical, as well asHcientilic men, the (Unices described by him wonld yield importantivsnlts. He laid H|)ecial stress on the Facility now alVorded forinvestigating the etldc^t ol mechanical \ il>ralion in all directions,ami also showed that he lia<l obserNcd a ninnber ol tacts in eonnectioii with iron cores. 490 INVENTIONS OF NIKOLA TESLA. The eiigravint;, Fiparatiis used by Mr, Tesla in his earlier investigationsin tliis tieki of work, and its interior construction is made plainby the sectional view shown in Fig. 318. It will be noted that thepiston p is titted into the hollow of a cylinder c which is providedwith channel ports o o, and i, extending all around the insidesurface. In this i^articular a]>]iaratns there are two channels o o. for the outlet of the working fluid and one, i, for the piston p is provided with two slots s s at a carefully deter-mined distance, one from tlic other. The tubes t t which arescrewed into the holes drilled into the piston, establish communi-cation between the slots s s and chambers on each side of thepiston, each of these chambers connecting with the slot which isremote from it. The ])istoii v is screwed tightly on a shaft a MECHANICAL AND ELECTRICAL OSCILLATORS. 491 wliicli passes through fitting boxes at the end of the cylinder boxes project to a carefully determined distance into the hol-low of the cylinder c, thus determining the length of the stroke. Surrounding the whole is a jacket j. This jacket acts chiefly todiminish the sound produced by the oscillator and as a jacket whenthe oscillator is driven by steam, in which case a somewhat differ-ent arrangement of the magnet
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Keywords: ., bookcentury1800, bookdecade1890, bookidinventionsre, bookyear1894
