The U.S. Patents of Nikola Tesla

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which conical vessel provided with intake openings and rest­ ing substantial base. The water may, course, artificially - cooled. .fluid, enings r th low end, eller rted w ith hen in o eratio circu latio 115 of sam e. The apparatus described not only makes this, impossible but very efficient trap. stance, know ledge, has ass fluid been elled by th use only such req ired to lif fro its level through_ a: relativ ely space fro hich 70 it overflow descends cascade, r have devices especially ­ pose been ployed. artificial de­ scribed, risin com bination ­ ceptacle, cen tral hollow onduit ith 90 elevated overflow placed erein lle r w ith conduit, riv g th eller, ir­ cu latio fluid conduit. 6. I well aware that artificial water falls haveheretofore been exhibited,and that foun­ tains which the same water circulated 60 are old and well known. artificial risin 110 fu set in a body . Bohleber. may dispensed with. 20 For example, the propeller may fixed di­ rectly the shaft the motor and the latter supported conveniently from above when many the parts illustrated Fig. Obviously, insure per­ fect working the weight the moving parts and axial reaction the propeller should be taken balanced thrust bear- 40 ing 16, other means. The invention has unlimited field of use private dwellings, hotels, theaters, 50 concert halls, hospitals, aquaria and, par-- ticularly, squares, gardens and parks " which may carried out large scale so afford magnificent spectacle far more captivating and stimulating the 55 public than the insignificant displays now in use. The device described may modified in many ways and also considerably simplified.1,113,716 heighten the effect, colored, opalescent or phosphorescent fluid may employed. fact, 25 receptacle itself may replaced an independent tank basin that the entire apparatus will only consist funnel shaped condujt, motor and propeller a unit. I testim hereof affix sig _ in the presence two. artificial risin in com bination ith stru cted passage fro elevated fluid levels, 106 of eller ir­ cu latio fluid such assage anpl cin ereb cascade ith e ex itu little energy. scrib itnésses. artificial erein de- 95 scribed, com risin com bination, ­ ceptacle, ith elevated overflow set erein tra ten p th conduit, ten ­ in lle rrie 100 by circu ­ latio fluid conduit. Unlike the old 10 devices which only very smalhvolume of water set motion, such waterfall is is highly effective cooling tire surround­ ing atmosphere. The 5 usual fountains are objectionable many places account the facility they afford t for the breeding insects. 80 2. Such construction shown Fig. still improve this ac­ tion the free end the rotating shaft 15 may’be utilized carry any kind fan. artificial risin in com bination stru cted g an elevated overflow set in body fluid, lle ith e co circu latio 85 o fluid sam r fo riv ropeller. artificial con sistin 75 u stru cted elevated overflow set body f w ater, llin device ­ ta circu latio ater th conduit. But all such cases independent pumps small volumet­ ric cap acity ere used raise to a reciab hich involved e ex itu considerable energy, hile th spectacle offered eye 65 esting. N . Sterilizing, aromatic radio-active liquids may also used, when desired. When desired pro- 45 cluce large and permanent waterfalls the conduit may formed masonry •of , appropriate archit ;tural desi^j. 5. . 4. W itn esses: M Lawson Dyad, Wm. 30 and Fig. motor 14, car­ rying strong shaft propeller' is fixed supports which extend from the 35 inner side conduit and may integral with the' same. Apparatus this description especially intended for use open basins-or reservoirs in which may placed and put action at short notice. 1 ~and Fig. W claim : 1. 3