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Nikola Tesla Lighting Patents

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U.S. Patent 514,170 - Incandescent Electric Light

Patent added 3/1/2015
The invention applies more particularly to that form of lamp in which a small body or button of refractory material is supported by a conductor entering a very highly exhausted globe or receiver, but is also applicable generally to other forms of lamp adapted for use with similar systems in which currents of very...

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U.S. Patent 455,069 - Electric Incandescent Lamp

Patent added 3/1/2015
In order to more distinctly point out those features which distinguish my invention, I would state that heretofore electric lamps have been made, first, by mounting a refractory conductor on metallic supporting-wires leading into a hermetically-sealed receiver from which the air has been exhausted or replaced by an...

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U.S. Patent 454,622 - System of Electric Lighting

Patent added 3/1/2015
For a better understanding of the invention it may be stated, first, that heretofore I have produced and employed currents for very high frequency for operating translating devices, such as electric lamps, and, second, that currents of high potential have also been produced and employed for obtaining luminous...
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U.S. Patent 447,920 - Method of Operating Arc-Lamps

Patent added 3/1/2015
This invention consists in an improved method of operating electric-arc lamps which are supplied with alternating or pulsating currents. It has now become a common practice to run arc lamps by alternating or pulsating as distinguished from continuous currents; but an objection to such systems exists in the fact that...

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U.S. Patent 335,787 - Electric-Arc Lamp

Patent added 3/1/2015
In my present invention I further provide means for automatically withdrawing a lamp from the circuit, or cutting out the same, when, from a failure of the feed, the arc reaches an abnormal length, and also means for automatically reinserting such lamp in the circuit when the rod drops and the carbons come into...

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U.S. Patent 335,786 - Electric-Arc Lamp

Patent added 3/1/2015
My invention relates more particularly to those arc-lamps in which the separation and feed of the carbon electrodes or their equivalents is accomplished by means of electromagnets or solenoids in connection with suitable clutch-mechanism; and it is designed to remedy certain faults common to the greater part of the...