8 (No Model.) No. 511,916. Fig. I L Witnesses Rapheil Netter R.7. Gaylord N. TESLA. ELECTRIC GENERATOR. B' BATAI B By BASHINGTON G 2 Sheets-Sheet 1. Patented Jan. 2, 1894. THE NATIONAL LITIGRAMING
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Nikola Tesla Patents
Tesla was granted nearly 200 patents worldwide
Nikola Tesla U.S. Patent 511,916 - Electric Generator Patent Wrappers
1 (No Model.) No. 511,916. Witnesses Raphail Netter R.7. Taylord N N. TESLA. ELECTRIC GENERATOR. Patented Jan. 2, 1894. Fig. 2 H' 'G' Ellen 2 Sheets-Sheet 2. Inventor Nikola Tesla Duncan & Page. By
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10 1893. Patent No. 511976. Nikola Tesla (Serial Number,): 483562 212.1 Of New York County of Sharest - New Yorks of Intention Electric Seiceratoid 19 Petition Affidavit Specification Drawing Model
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J J I J 10% Application Och 30.93 Nov 4.; Umidit. stros 6.93 18. 19. 20, 213 22 23. 1893. CONTENTS: IZI ELECTRIC Generano Magnaio papers. A 1493 11 Reg. For Beck 0 17:* in Reg. For Nov. 22 92 Dec. 5
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12 hould gire the sorial number, date of fiing, and title of lavendon Any gomasundontion respecting this application N. Tesla, c/o Duncan & Page, (2-07La) DEPARTMENT OF THE INTERIOR, UNITED STATES
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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
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14 set forth." We have considered very carefully the object ions made to this application and have examined the references cited. It was not the inventor's intention to be understood as claiming the
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J T T 1 1 1 T from the object ions raised. Claim 4 we have redrawn and as the claim now describes a combinat ion which is new in the broadest sense we submit that the limitations are not merely
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16 Any unfortion roogueting this application should give the serial Lucaber, dato G. L. M. N. Tesla, c/o Duncan & Page, (2-071 6 DEPARTMENT OF THE INTERIOR, UNITED STATES PATENT OFFICE, #120 Bdwy., N
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T T 1 Nov. 4-93 TO ALL WIDOM IT MAY CONCERN: BE IT KNOWN, That I, NIKOLA TESLA, a citizen of the United States, residing at New York, in the County and State of New York, have invented certain new and
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18 Олек 2 In the construction of my engine above referred to I have followed and applied this principle, that is to say, I employ a cylinder and a piston which in any suitable manner I maintain in
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S ) The length of the stroke will vary with the pressure, but the rate or period of reciprocat ion is no more dependent upon the pressure applied to drive the piston, than would be the period of
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20 3 any special advantage. Such an engine as I have described affords a means of accomplishing a result heret ofore unat ta ined, the tinued production of electric currents of constant period, by
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( ) ) ) () even 4 the self induction and capacity of the circuit including the generator. I have however, observed the further fact in connection with the use of such engines as a means for running a
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22 the influence of the electro-magnetic system may be made so great as to entirely control the period of the mechanical vibration within wide limits of varying pressure. This is likely to occur in
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( J 5ment of this object I have found it preferable to construct the engine so that it of itself controls the per iod, but as I have stated before, I may so modify the elements of the cambination that
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24 varied, and is not in itself material, except that in the special case now under consideration it is desirable that all the ports, and more especially the exhaust ports should be made very much
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evin leads into this chamber, and the two pipes that lead to the cylinder A run from the said chamber, oil cups M being conveniently arranged to deliver oil into the said pipes. for lubricat ing the
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26 site side of the plunger J and tends to drive it forward. The compressions of the air in the cylinder I and the consequent loss of energy due mainly to the imperfect. elasticity of the air, give
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J ) }) limits may be secured by properly port ioning these factors, as by varying the dimensions of the air chamber which is equivalent to varying the rigidity of the spring, or by adjusting the
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28 8 in the coil. These currents, if the period of mechanical oscillation be constant will be of constant period, and may be utilized for any purpose desired. In the case under consideration it is
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T T T T casing F in which a laminat ed core G' secured to the piston rod H is caused to vibrate. Surrounding the plunger are two exciting coils C¹ C¹, and one or more induced coils D' D'. The coils C'
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30 9 Substitute а Trov. 4, 7/93 under ordinary working conditions that such control may be entirely adequate to produce the desired results. Having now described my in venti on what I claim is: 1. The
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JIILI od of reciprocation, of an electric generator, the moving conductor or element of which is connected with the engine, the generator and its circuit being so related to the engine as not to
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32 Hon. Commissioner of Patents, Sir:- Room 87 In the Matter of the Application of Nikola Tesla, No. 483,562, Filed August 19, 1893, Electric Generators. Since the writing of the office letter of
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T J raised, No instance is shown in which the generator has been selected with any reference whatever to its natural period of electrical vibration, as regards the period of the engine. The claim is
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34 Ang communalcation podjeting this application should give the serial number, dato of illing, and (Itlo G. L. M. N. Tesla, c/o Duncan & Page, DEPARTMENT OF THE INTERIOR, UNITED STATES PATENT OFFICE
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1 Sir:- In the Matter of the Application of Hon. Commissioner of Patents, Room 87. Nikola Tesla, No. 483,562, Filed August 19, 1893, Electrical Generators. facts. New York, November 16, 1893. We have
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36 neap. seng , ald in. valveless en the same principle of operation as those used for other forms of generator, No governing devices are shown in the drawing it is true, but the drawing is only a
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J 1 1 It is entirely clear that Jablochkoff intended by his drawing only an ordinary engine, and omitted the valve controlling and regulating mechanism merely because they would be superfluous in such
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38 can pay hom sorin rospeting this application should give G. L. M. N. Tesla, c/o Duncan & Page, DEPARTMENT #120 Bdwy., N.Y.City. 87. Room No........ (9-07 a.) All communication should le created to
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J J J J Hon. Commissioner of Fatents, Sir:- Room 87. In the Matter of the Application of Nikola Tesla, No. 483,562, Filed Aug. 19, 1893, Electrical Generators December 4th, 1893. In the matter of the
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40 We believe that this reason, if we state it corectly, will not be insisted upon as it is manifestly unjust and contrary to established principles of law. Anot ter objection to the claims is that
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which of the two classes of ereine above described device of the Wood and Robinson patent belongs. have assumed from the start that engin es of the class of which this was cited as a type, that is
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42 tating system of inertia. "I produce such current by imparting to the bobbins a reciprocating movement etc." and further, "To produce this reciprocating movement of the currents (evidently meaning
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that the latter should contain an unmistakably clear description of the invention. It is not enough that it hist contains a mere dimit or suggestion of the thing claimed. This is the fully established
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44 comow would be adressed to "The Commissioner of Patents, Washington, D. C." G. L. M. N. Tesla, c/o Durcan & Page, #120 Rdwy., Room No.. (2-035) 87. DEPARTMENT OF THE INTERIOR, UNITED STATES PATENT
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LAW OFFICES OF DUNCAN & PAGE, SANA. DUNCAN, ROMNT H. DUNCAN, PARA W. PADE ROMENT F. GAYLORD AUCUN Hon. Commissioner of Patents, CR Dear Sir:- EF OLER $15 applied Futon (Dictated). 120 BROADWAY,
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