Nikola Tesla U.S. Patent 511,916 - Electric Generator Patent Wrapper Page 6

J [ T J J a lows: Hon. Commissioner of Patents, Sir: - number 483, 563", Room 87 In the Matter of the Appli cat ion of Nikola Tesla, No. 483,562, Filed August 19, 1893, Electric Generators. New York, November 2, 1893. #3. On page 1, line 8, after "herewith" insert/"serial In the above matter we now amend as folCancel claims 3 and 4 and insert: The combination with an engine comprising a piston which is free to reciprocate under the action of steam or a gas under pressure, and an electric generator having inducing and induced elements one of which is capable of oscillation in the field of force, the said movable element being carried by the pist on rod of the engine, as set forth. 4. The combination with an engine operated by steam or a gas under pressure and having a constant period of reciprocation, of an electric. generator, the moving element of which is carried by the reciprocating part of the engine, the generator and its circuit being so related to the engine with respect to the period of electrical vibration as not to disturb the period of the engine, as I 13