Displaying patents 1-10 of 112

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

Average: 4.2 (38 votes)
Category: 
Lighting
Country: 
United States
Application date: 
March 30th, 1885
Issue date: 
February 9th, 1886
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...continue reading »
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U.S. Patent 334,823 - Commutator for Dynamo-Electric Machines

Average: 4.2 (20 votes)
Category: 
Motors & Generators
Country: 
United States
Application date: 
May 6th, 1885
Issue date: 
January 26th, 1886
It is known that in machines of great electro-motive force - such, for instance, as those used for arc lights - whenever one commutator bar or plate comes out of contact with the collecting-brush a spark appears on the commutator. This spark may be due to the break of the complete circuit, or of a shunt of low...continue reading »
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U.S. Patent 336,961 - Regulator for Dynamo-Electric Machines

Average: 4.1 (13 votes)
Category: 
Motors & Generators
Country: 
United States
Application date: 
May 18th, 1885
Issue date: 
March 2nd, 1886
The object of my invention is to provide an improved method for regulating the current on dynamo-electric machines. In my improvement I make use of two main brushes, to which the ends of the helices of the field-magnets are connected, and an auxiliary-brush and a branch or shunt-connection to form an intermediate...continue reading »
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U.S. Patent 336,962 - Regulator for Dynamo-Electric Machines

Average: 4.3 (9 votes)
Category: 
Motors & Generators
Country: 
United States
Application date: 
June 1st, 1885
Issue date: 
March 2nd, 1886
In my improvement I employ one or more auxiliary brushes, by means of which I shunt a portion or the whole of the field-helices. According to the relative position upon the commutator of the respective brushes more or less current is caused to pass through the helices of the field, and the current developed by the...continue reading »
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U.S. Patent 350,954 - Regulator for Dynamo-Electric Machines

Average: 4.2 (11 votes)
Category: 
Motors & Generators
Country: 
United States
Application date: 
January 14th, 1886
Issue date: 
October 19th, 1886
In another applications I have shown the commutator of a dynamo-machine with the main brushes connected in an electric circuit, and one or more auxiliary brushes serving to shunt a part or the whole of the field-coils, the regulation of the current being effected by shifting the respective brushes automatically upon...continue reading »
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U.S. Patent 396,121 - Thermo-Magnetic Motor

Average: 4.4 (15 votes)
Category: 
Motors & Generators
Country: 
United States
Application date: 
March 30th, 1886
Issue date: 
January 15th, 1889
In my present invention I obtain mechanical power by a reciprocating action resulting from the joint operations of heat, magnetism, and a spring or weight or other force - that is to say, I subject a body magnetized by induction or otherwise to the action of heat until the magnetism is sufficiently neutralized to...continue reading »
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U.S. Patent 335,787 - Electric-Arc Lamp

Average: 4.4 (7 votes)
Category: 
Lighting
Country: 
United States
Application date: 
July 13th, 1886
Issue date: 
February 9th, 1886
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...continue reading »
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U.S. Patent 359,748 - Dynamo-Electric Machine

Average: 4.5 (20 votes)
Category: 
Motors & Generators
Country: 
United States
Application date: 
December 1st, 1886
Issue date: 
March 22nd, 1887
The main objects of my invention are to increase the efficiency of the machine and to facilitate and cheapen the construction of the same; and to this end my invention relates to the magnetic frame and the armature, and to other features of construction, hereinafter more fully explained. My invention is illustrated...continue reading »
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U.S. Patent 382,845 - Commutator for Dynamo-Electric Machines

Average: 3.8 (12 votes)
Category: 
Motors & Generators
Country: 
United States
Application date: 
April 30th, 1887
Issue date: 
May 15th, 1888
The objects of the invention are, first, to avoid the sparking and the gradual wearing away or destruction of the commutator-segments and brushes or collectors resulting therefrom; second, to obviate the necessity of readjustment of the commutator or the brushes or collectors and other consequences of the wear of...continue reading »
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U.S. Patent 428,057 - Pyromagneto-Electric Generator

Average: 4.2 (19 votes)
Category: 
Motors & Generators
Country: 
United States
Application date: 
May 26th, 1887
Issue date: 
May 13th, 1890
This invention is an improved form of electrical generator based upon the following well-known laws: First, that electricity or electrical energy is developed in any conducting-body by subjecting such body to a varying magnetic influence, and, second, that the magnetic properties of iron or other magnetic substance...continue reading »
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