The U.S. Patents of Nikola Tesla

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Serial No, 684,934.) To whom concern: lie known that citi­ zen the United States, residing New York, in the county and State New York, have in- 5 vented certain new and useful improvements in methods and apparatus for controlling from distance the operation the propel­ ling engines, the steering apparatus, and other mechanism carried movingbodies or ro floating vessels, which the following a specification, reference being had the drawr ings accompanying and forpiing part the same. accomplish, nevertheless, similar results and much more ipractica- 65 ble manner producing waves, impulses, or radiations which are received through the earth, water, atmosphere suitable ap­ paratus the moving body and cause the desired actions long the body remains 70 within the active region oreffective range of such currents, waves, impulses, radiations. 613,809, dated November . In broad sense, then, myTinvention dif­ fers from all those systems which provide for the control the mechanism carried á moving object and governing its motion 60 that require intermediate wires, cables, or other form electrical mechanical con­ nection with the object save the natural mo- . 40 controlfrom point which practically fixed, and many well-understood drawbacks in­ separably connected with such system. NIKOLA TESLA, NEW YORK, Y.United States Patent Office. Application tied July 1,1898. dia space. The many and difficult requirements the object here contemplated, involving peculiar means for transmitting considerable dis- 75 tance influence capable causing a positive and reliable manner these actions, necessitated the designing devices and ap­ paratus novel kind order utilize to the best advantage various facts results, 80 which, either through own investigations or those others, have been rendered prac­ tically available. As that part invention which in­ volves the production suitable waves 85 variations and the conveying the same to a remote receiving apparatus capable be­ ing operated controlled their influence, it may carried out various ways, which are the present time more less under- 90 stood. the latter were generated in the ordinary ways, the rate change, and 100 consequently the distance which the action would practically available for the present purpose, would very small; but adopt­ ing such means have devised—that is, . this 95 case the action given distance will the stronger the larger the area inclosed the conductor and the greater the rate change of the current. METHOD AND APPARATUS FOR CONTROLLING MECHANISM MOVING VESSELS VEHICLES. (No model. The problem for which the invention form- 15 ing the subjecťof present application af­ fords complete and practicable solution is that controlling from given point the op­ eration the propelling-engines, the steer­ ing apparatus, and other mechanism carried 20 moving object, such boat any floating vessel, whereby the movements and course such body vessel may directed and controlled from distance and any de­ vice carried the same brought into action 25 any desired time. SPECIFICATION' form ing part Letters atent No. far aware the only attempts solve this problem which have heretofore met with any measure suc­ cess have been made connection with a certain class vessels the machinery of 30 which was governed electric currents con­ veyed the controlling apparatus through a flexible conductor; but this system issubject to such obvious limitations are imposed by the length, weight, and strength the con- 35 ductor which can practically used, the difficulty' maintaining with safety high speed the vessel changing the direction of movement the same with the desired rapidity, the necessity for effecting the. For example, may pass through a conducting-path, preferably inclosing large area, rapidly-varying current and elec­ tromagnetic induction the same affect a circuit carried the moving body. The plan which have perfected involves none of these objections, for enable4 the use 45 invention employ any means pro­ pulsion, impart the moving body ves­ sel the highest possible speed, control the operation its machinery and direct its movements from either fixed point from 50 body moving and changing its direction however rapidly, and maintain this control over great distances without any artificial connections between the vessel and the ap­ paratus governing its movements and with­ out such restrictions these must necessarily 55 impose