US1198873A - Commutator-brush and method of making the same. - Google Patents
Commutator-brush and method of making the same. Download PDFInfo
- Publication number
- US1198873A US1198873A US85350314A US1914853503A US1198873A US 1198873 A US1198873 A US 1198873A US 85350314 A US85350314 A US 85350314A US 1914853503 A US1914853503 A US 1914853503A US 1198873 A US1198873 A US 1198873A
- Authority
- US
- United States
- Prior art keywords
- brush
- commutator
- carbon
- making
- brushes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/20—Conductive material dispersed in non-conductive organic material
- H01B1/22—Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
Definitions
- my invention relates to brushes-that transmit heavy currents to -or from the commutator and to brushes that y are employed-at low voltages and includes not only the article but the process of making it.
- brushes for transmitagemach-ines havecommonly been made of superimposed strips of thin copper or other metal or wire gauze (usually of bronze or of copper) properly rolled and flattened into a nearly solid mass oflthe desired shape.
- Such brushes have not been-satisfactory on account of excessive commutator and vbrush wear.
- I brushes of high conductivity Another method commonly 'used to make I brushes of high conductivity has been to employ very finely divided copper or other metal such as would pass through a one hundred (100) mesh screen intimately mixed Y with finely divided carbon and the wholemass then being bonded together with pitch and subsequently baked or carbonized.
- ductivity brushes has been to employ alternatelayers of wire gauze, the strands which would measure about .0107 in diameter and woven to about thirty (30) meshes per inch bonded :between -,stri-ps or carbon. Such separated and are open tothe further 0bjection' that the 's'trandsof wire frequently fuse andmelt away at the face of the brush 7 when transmitting heavy currentscaused by the current being carried by a comparatively few number of wires thus greatly impairing.
- the conductivity will be mainly governed by the percentage of metal filaments or ribbons present in the mix and that different commutating elfects may be secured by not only changing the cross sectionof the metal filaments or ribbons themselves, either above or below 'the dimensions given above but also by changing their lengths as used in the mix.
- I employ a mixture containing about sixty per cent. of copper filaments, about twenty live per cent. of carbon and about fifteen per cent. of pitch. Any suitable method may be employed in forming or compressin the mix into suitable form. The method which I ordinarilyemploy consists of molding the mix in suitable molds under a pressure of about thirteen tons per square inch.
- metal in the usual powdered form This not only effects a saving in metal, important particularly if silver, gold or other expensive metal is used, but also permits a much larger percentage of carbon to be used in the brush, the chief object of which is to act as a lubricant and to prevent abrasion or undue Wear- Furthermore, sinch each filament is ments and carbon such as I have previously described.
- Figure 1 is an elevation showing the completed brush
- Fig. 2 is an endview showing the ends of the metal filament in the face of the brush
- Fig. 3 illustrates an end view of a com posite brush while Fig. 4, shows a diagrammatic side View of a composite brush.
- A designates a brush in which the metallic particles 1 are distributed throughout the body of the brush, being embedded in the material 2 formed by the carbon and pitch, as shown in Fig. l.
- the metallic particles 1 extend longitudinally of the brush, andin Fig. 2 only the ends of the particles lying in the end sur face of the brush are seen.
- a brush B is shown in which the core is composed of metal particles embedded in carbon and pitch, and around the .core is a covering 3 of carbon and pitch material.
- This brush may be used in other situations where it is desired to change or switch heavy currents or where a contact for low voltage work is desired that Will minimize the voltage drop. This also may be'used as a self lubricating bearing material.
- a commutator brush comprising a block of carbon, having embedded therein a quantity of fine metallic strands, said strands being promiscuously disposed throughout the block andthe strands being substantially parallel with the major axis of the brush.
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- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Motor Or Generator Current Collectors (AREA)
Description
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US85350314A US1198873A (en) | 1914-07-27 | 1914-07-27 | Commutator-brush and method of making the same. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US85350314A US1198873A (en) | 1914-07-27 | 1914-07-27 | Commutator-brush and method of making the same. |
Publications (1)
Publication Number | Publication Date |
---|---|
US1198873A true US1198873A (en) | 1916-09-19 |
Family
ID=3266817
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US85350314A Expired - Lifetime US1198873A (en) | 1914-07-27 | 1914-07-27 | Commutator-brush and method of making the same. |
Country Status (1)
Country | Link |
---|---|
US (1) | US1198873A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE890540C (en) * | 1939-02-23 | 1953-09-21 | Conradty Fa C | Electric machines with coal collectors |
DE1093895B (en) * | 1958-09-24 | 1960-12-01 | Nelken Kg Dr Ewald | Brush contact for rigid and movable devices of clamping contacts and pantographs |
US3498929A (en) * | 1967-07-06 | 1970-03-03 | North American Rockwell | Reinforced carbonaceous bodies |
-
1914
- 1914-07-27 US US85350314A patent/US1198873A/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE890540C (en) * | 1939-02-23 | 1953-09-21 | Conradty Fa C | Electric machines with coal collectors |
DE1093895B (en) * | 1958-09-24 | 1960-12-01 | Nelken Kg Dr Ewald | Brush contact for rigid and movable devices of clamping contacts and pantographs |
US3498929A (en) * | 1967-07-06 | 1970-03-03 | North American Rockwell | Reinforced carbonaceous bodies |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: HART & COOLEY, INC., MICHIGAN Free format text: RELEASE OF SECURITY INTEREST;ASSIGNOR:CHASE MANHATTAN BANK, AS ADMINISTRATIVE AGENT, THE;REEL/FRAME:010602/0285 Effective date: 19991229 |
|
AS | Assignment |
Owner name: CITICORP USA, INC., AS COLLATERAL AGENT, NEW YORK Free format text: SECURITY AGREEMENT;ASSIGNORS:AIR SYSTEM COMPONENTS, INC.;AQUATIC CO.;DEXTER AXLE COMPANY;AND OTHERS;REEL/FRAME:025549/0407 Effective date: 20100929 |
|
AS | Assignment |
Owner name: WILMINGTON TRUST FSB, AS COLLATERAL AGENT, CONNECT Free format text: SECOND LIEN NOTES PATENT SECURITY AGREEMENT;ASSIGNORS:AIR SYSTEM COMPONENTS, INC.;AQUATIC CO.;DEXTER AXLE COMPANY;AND OTHERS;REEL/FRAME:025560/0057 Effective date: 20100929 |
|
AS | Assignment |
Owner name: TOMKINS INDUSTRIES, INC., OHIO Free format text: RELEASE OF SECURITY INTEREST AT REEL/FRAME 025560/0057;ASSIGNOR:WILMINGTON TRUST, NATIONAL ASSOCIATION, SUCCESSOR BY MERGER TO WILMINGTON TRUST FSB;REEL/FRAME:029275/0096 Effective date: 20121109 Owner name: SELKIRK CORPORATION, TEXAS Free format text: RELEASE OF SECURITY INTEREST AT REEL/FRAME 025549/0407;ASSIGNOR:CITICORP USA, INC.;REEL/FRAME:029275/0110 Effective date: 20121109 Owner name: TOMKINS INDUSTRIES, INC., OHIO Free format text: RELEASE OF SECURITY INTEREST AT REEL/FRAME 025549/0407;ASSIGNOR:CITICORP USA, INC.;REEL/FRAME:029275/0110 Effective date: 20121109 Owner name: HART & COOLEY, INC., MICHIGAN Free format text: RELEASE OF SECURITY INTEREST AT REEL/FRAME 025549/0407;ASSIGNOR:CITICORP USA, INC.;REEL/FRAME:029275/0110 Effective date: 20121109 Owner name: AIR SYSTEM COMPONENTS, INC., TEXAS Free format text: RELEASE OF SECURITY INTEREST AT REEL/FRAME 025560/0057;ASSIGNOR:WILMINGTON TRUST, NATIONAL ASSOCIATION, SUCCESSOR BY MERGER TO WILMINGTON TRUST FSB;REEL/FRAME:029275/0096 Effective date: 20121109 Owner name: RUSKIN COMPANY, MISSOURI Free format text: RELEASE OF SECURITY INTEREST AT REEL/FRAME 025560/0057;ASSIGNOR:WILMINGTON TRUST, NATIONAL ASSOCIATION, SUCCESSOR BY MERGER TO WILMINGTON TRUST FSB;REEL/FRAME:029275/0096 Effective date: 20121109 Owner name: EASTERN SHEET METAL INC., OHIO Free format text: RELEASE OF SECURITY INTEREST AT REEL/FRAME 025549/0407;ASSIGNOR:CITICORP USA, INC.;REEL/FRAME:029275/0110 Effective date: 20121109 Owner name: SELKIRK CORPORATION, TEXAS Free format text: RELEASE OF SECURITY INTEREST AT REEL/FRAME 025560/0057;ASSIGNOR:WILMINGTON TRUST, NATIONAL ASSOCIATION, SUCCESSOR BY MERGER TO WILMINGTON TRUST FSB;REEL/FRAME:029275/0096 Effective date: 20121109 Owner name: HART & COOLEY, INC., MICHIGAN Free format text: RELEASE OF SECURITY INTEREST AT REEL/FRAME 025560/0057;ASSIGNOR:WILMINGTON TRUST, NATIONAL ASSOCIATION, SUCCESSOR BY MERGER TO WILMINGTON TRUST FSB;REEL/FRAME:029275/0096 Effective date: 20121109 Owner name: AIR SYSTEM COMPONENTS, INC., TEXAS Free format text: RELEASE OF SECURITY INTEREST AT REEL/FRAME 025549/0407;ASSIGNOR:CITICORP USA, INC.;REEL/FRAME:029275/0110 Effective date: 20121109 Owner name: RUSKIN COMPANY, MISSOURI Free format text: RELEASE OF SECURITY INTEREST AT REEL/FRAME 025549/0407;ASSIGNOR:CITICORP USA, INC.;REEL/FRAME:029275/0110 Effective date: 20121109 Owner name: EASTERN SHEET METAL, INC., OHIO Free format text: RELEASE OF SECURITY INTEREST AT REEL/FRAME 025560/0057;ASSIGNOR:WILMINGTON TRUST, NATIONAL ASSOCIATION, SUCCESSOR BY MERGER TO WILMINGTON TRUST FSB;REEL/FRAME:029275/0096 Effective date: 20121109 |