198 No. 649,621. (No Model.) N. TESLA. APPARATUS FOR TRANSMISSION OF ELECTRICAL ENERGY. (Application filed Feb. 19, 1900.) B G Witnesses: Buyanin Miller. 9. W. Marthing. L-C Patented May 15, 1900. MD'

T ( J J ( C ( T Div: 1900 (Ex's Book) Patent No.. 649.624 Nikola Tesla (Serial Number.) 5780 18 Parts of Application filed, New York New York Of 20 County of State of. Inyention Apparatus for the

200 (3-191.) ELECTRICITY, Motive Power, Transmission of Powers Alternating. Application papers. March 20-1900 - RejectionApr. 2 Amendi-A. 18. CONTENTS: 22 TITLE: Improvement in Opparatus for the

-ToTo the Commissioner of Patents; Your Petitioner Nikola Tesla, a citizen of the United States, residing at New York, in the County of and State of-New York, New York, Post Office address 46 East

202 State of New York, County of New York, Nikola Tesla, the above-named petitioner, being duly sworn, deposes and. says that he is a citizen ofthe United States, and resident of the City of New York

} J T 1 J To all whom it may concern:- Be it known that I, Nikola Tesla, a citizen of the United States, residing at the Borough of Manhattan, in the City of New York, County and State of New York

204 2 length wound around and in proximity to the coil A. p The apparatus at one point is used as a transmitter, the coil A in this case. constituting a high tension secondary, and the coil C, the

C J length of the electric disturbance in the circuit, this estimate being based on the velocity of propagation of the disturbance through the coil itself and the circuit with which it is designed to

206 necessarily implies that the capacity and inductance in each of the circuits have such values as to secure the most perfect condition of synchronism with the impressed oscillations. qi When the

} T work to be performed, by the condition of the atmosphere, and also by the character of the surrounding country. Thus, if there be high mountains in the vicinity, the terminals should be at a

208 Cancelled Pu A Edison 465971 Pr It is to be noted that the phenomenon here involved in the transmission of electrical energy is one of true conduction and is not to be confounded with the

( ( J JIJ ] E Cancelled Pert Edison Edir medium, a secondary conductor in inductive relation to the receiving conductor and devices for utilizing the current in the circuit of said secondary conductor

210 W Substitute AL 2010 do view of Jesta do 5. The combination with a transmitting instrument comprising an electrical transformer, having its secondary connected to ground and to an elevated

T T Edison ~ Edison 4 synchronized with that of the transmitter, as set forth. 7 p. The combination with a transmitting coil or conductor connected to ground and to an elevated terminal respectively

212 terminal and so arranged that the elevated terminal is charged to the highest potential developed in the circuit, as set forth. Witnesses: pakero. Раде Marcus Bailey -10Nikole Tesli

J 1 3 In every application for a patent fled subsequent to December 31, 1897, responsive action must be made by the inventor within one year after the last offloe action or the caso will become

214 A A Room 85. In the matter of the application of Nikola Tesla, No. 5780, filed February 19, 1900. Apparatus for the Transmission of Electrical Energy. Hon. Commissioner of Patents, Sir:- New York

[ 1 to an elevated terminal, and a translating device connected with its secondary, the capacity and inductance of the secondary of the transmitting and primary of the receiving instruments having

216 that their periods of vibration are the same. This is a special form of the apparatus covered by claim 3, and is not suggested by the Edison patent. claims 9 and 10 are for an apparatus that was