US551033A - Commutator-brush - Google Patents
Commutator-brush Download PDFInfo
- Publication number
- US551033A US551033A US551033DA US551033A US 551033 A US551033 A US 551033A US 551033D A US551033D A US 551033DA US 551033 A US551033 A US 551033A
- Authority
- US
- United States
- Prior art keywords
- commutator
- brush
- sections
- plane
- metal
- 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
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 34
- 239000002184 metal Substances 0.000 description 32
- 229910052751 metal Inorganic materials 0.000 description 32
- 239000010439 graphite Substances 0.000 description 20
- 229910002804 graphite Inorganic materials 0.000 description 20
- 229910052799 carbon Inorganic materials 0.000 description 14
- 230000001050 lubricating Effects 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- 238000009991 scouring Methods 0.000 description 8
- 238000010276 construction Methods 0.000 description 4
- 238000004070 electrodeposition Methods 0.000 description 4
- 239000004615 ingredient Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000010458 rotten stone Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/18—Contacts for co-operation with commutator or slip-ring, e.g. contact brush
- H01R39/26—Solid sliding contacts, e.g. carbon brush
Definitions
- the main object of our invention is to provide commutator-brushes composed mainly or in part of carbon or of some similar material or composition with a metallic contactsurface disposed or arranged to present an approximately uniform area to the commutator transversely to its plane of rotation, and thereby to increase the conductivity and effi* ciency of the brush to insure perfect contact with the commutator and to avoid wearing the commutator unevenly.
- commutatorbrush composed of alternating layers, strips, or sections of carbon or some similar material or composition and layers, strips, orsections of metal, the metallic strips being so arranged as to present an approximately uniform area to the commutator transversely to the plane of its revolution.
- Figure l is a perspective view of a commutator-brush embodying our improvements.
- Fig. 2 is a similar view of one of the component sections.
- Fig. 3 illustrates a modification oi' the mode of forming and assembling the metallic and carbon sections, and Figs. 4 and 5 show still further modiiications in the form of the sections.
- A represents a brush composed of a number of alternating sections, layers, or strips B B of graphite or other similar conducting and lubricating ma* terial and of correspondingly-shaped sections, layers, or strips l) l) of metal, such as copper.
- These sections are longitudinally iiuted, crimped7 or corrugated, so as to be nested together and more readily held in place when assembled in the brush and to distribute the metal more evenly in a direction transverse to the plane of rotation of the commutator.
- the metallic portions of the brush serve, primarily, to conduct the current, thus increasing the conductivity of the brush, and, secondarily, to bind the graphite or other lubricating material or composition together, and thus prevent its disintegration.
- the metal in the construction of the brush we prefer to apply the metal to the sections of graphite or lubricating composition formed to the desired shape by electrodeposition. These sections may then be assembled and permanently bound together by a coating a of electrically-deposited metal, as shown in Fig. l, or they may be separately assembled and held together by any suitable boX, casing, or brush-holder.
- a composition of graphite containing as an ingredient some suitable scouring material-such as tripoli, pumice-stone, or the like-which will prevent oxidation of the commutatorsurface and keep the same constantly smooth and bright without attention.
- suitable scouring material such as tripoli, pumice-stone, or the like-which will prevent oxidation of the commutatorsurface and keep the same constantly smooth and bright without attention.
- the sections have a zigzag form in cross-section, D D representing the graphite or composition strips and d d the metallic strips.
- the sections are formed with plane surfaces and are arranged obliquely to the plane of rotation of the commutator, (inA dicated by the dotted line c 00,) so as to present a greater lateral extent of metal to the commutator, F F representing the sections of graphite or composition and ff the sections of metal.
- the metal may be plated by electrodeposition upon the strips of graphite or composition, or the metal may be formed in separate strips corresponding in shape with the strips of graphite or eomposi tion between which they are interposed.
- the desired lateral distribution of the metal to produce a continuous uniform metallic contact with the commutator in the direction of the width of the brush is produced in our brush by arranging the sections at an inclination to a Vertical plane or to the plane of rotation of the commutator or by offsetting, Tinting, or corrugating the sections, so that they will each be cut by such a plane at two or more points.
- a commutator brush composed of alternating strips or sections of carbon or a carboniferous composition, and strips or sections of metal offset or inclined to the plane of rotation of the commutator so as te present thereto a continuous and approximately uniform area of metallic contact, substantially as and for the purposes set forth.
- a eommutator brush composed of alternating strips or sections of carbon or a carboniferous composition, and metal, correspondingly corrugated or fluted lengthwise to iit into each other and to present an approximately uniform. metallic contact surface to the commutator transversely to its plane of rotation, substantially as and for the purposes set forth.
- a commutator brush composed of alternating sections or strips of a lubricating and scouring composition and of metal inclined or offset to the plane of rotation of the commutator so as to produce a continuous and approximately uniform area of metallic contact to the commutator in the direction of the width of the brush, substantially as and for the purposes set forth.
- a commutator brush composed of alternating sections of a graphite composition containing a scouring ingredient and of metal, the component sections of the brush being corrugated or fiuted lengthwise so as to present an approximately uniform area of metallic contact to the commutator transversely to the plane of rotation, substantially as and for the purposes set forth.
- a commutator brush composed of alternating sections of a composition of graphite and scouring material and sections of metal, the component sections of the brush being offset or inclined to the plane of rotation of the commutator so as to present a continuous and approximately uniform area of metallic contact to the commutator, transverse to its plane of rotation, substantially as and for the purposes set forth.
Description
(No Model.)
R. HIRSCH 81; H. MEMINGER.
GOMMUTATOR BRUSH.
Patented Deo. 10 1895.
Eg. i.
UNITED STATES PATENT OEEicE.
ROBERT HIRSCII AND 'HERMAN MEMINGER, OF MITVAUKEE, VISCONSlN.
cQMMuTAToR-BRUSH.
SFECIFICATION forming part of Letters Patent No. 551,033, dated December 10, 1895.
Application filed January 28, 1893. Serial No. 459,936. (No model.)
T c/.ZZ whom t may concern,.-
.e it known that we, ROBERT llIRsCH and HERMAN MEMINGER, of Milwaukee, in the count-y of Milwaukee and State of lVisconsin, have invented certain new and useful Improvements in Commntator-Brushes; and we do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.
The main object of our invention is to provide commutator-brushes composed mainly or in part of carbon or of some similar material or composition with a metallic contactsurface disposed or arranged to present an approximately uniform area to the commutator transversely to its plane of rotation, and thereby to increase the conductivity and effi* ciency of the brush to insure perfect contact with the commutator and to avoid wearing the commutator unevenly.
It consists, essentially, of a commutatorbrush composed of alternating layers, strips, or sections of carbon or some similar material or composition and layers, strips, orsections of metal, the metallic strips being so arranged as to present an approximately uniform area to the commutator transversely to the plane of its revolution.
In the accompanying dra-wings like letters designate the same parts in the several iigures.
Figure l is a perspective view of a commutator-brush embodying our improvements. Fig. 2 is a similar view of one of the component sections. Fig. 3 illustrates a modification oi' the mode of forming and assembling the metallic and carbon sections, and Figs. 4 and 5 show still further modiiications in the form of the sections.
Referring to Figs. l and 2, A represents a brush composed of a number of alternating sections, layers, or strips B B of graphite or other similar conducting and lubricating ma* terial and of correspondingly-shaped sections, layers, or strips l) l) of metal, such as copper. These sections are longitudinally iiuted, crimped7 or corrugated, so as to be nested together and more readily held in place when assembled in the brush and to distribute the metal more evenly in a direction transverse to the plane of rotation of the commutator. By means of this construction and arrangement of the component parts of the brush a metallic contact-surface of approximately uniform area is presented to the commutator throughout the width of the brush and at whatever angle it may be presented to the commutator.
The metallic portions of the brush serve, primarily, to conduct the current, thus increasing the conductivity of the brush, and, secondarily, to bind the graphite or other lubricating material or composition together, and thus prevent its disintegration.
In the construction of the brush we prefer to apply the metal to the sections of graphite or lubricating composition formed to the desired shape by electrodeposition. These sections may then be assembled and permanently bound together by a coating a of electrically-deposited metal, as shown in Fig. l, or they may be separately assembled and held together by any suitable boX, casing, or brush-holder.
For the lubricating material we prefer to employ a composition of graphite containing as an ingredient some suitable scouring material-such as tripoli, pumice-stone, or the like-which will prevent oxidation of the commutatorsurface and keep the same constantly smooth and bright without attention. In Fig. i the sections have a zigzag form in cross-section, D D representing the graphite or composition strips and d d the metallic strips. In Fig. the sections are formed with plane surfaces and are arranged obliquely to the plane of rotation of the commutator, (inA dicated by the dotted line c 00,) so as to present a greater lateral extent of metal to the commutator, F F representing the sections of graphite or composition and ff the sections of metal. In either case the metal may be plated by electrodeposition upon the strips of graphite or composition, or the metal may be formed in separate strips corresponding in shape with the strips of graphite or eomposi tion between which they are interposed.
in brushes of this class as heretofore conn structed the intermediate strips or layers of metal have been arranged. in vertical planes or planes parallel to the plane of rotation of the commutator, thus producing in a direction transverse to the plane of rotation of the commutator an interrupted metallic contact, which has tended to produce grooves in or wear the commutator unevenly, besides affording imperfect electrical contact, it being the main function of the carbon in such brushes to conduct the current and the main function of the metallic covering or sections to bind and hold the carbon in place.
The desired lateral distribution of the metal to produce a continuous uniform metallic contact with the commutator in the direction of the width of the brush is produced in our brush by arranging the sections at an inclination to a Vertical plane or to the plane of rotation of the commutator or by offsetting, Tinting, or corrugating the sections, so that they will each be cut by such a plane at two or more points.
lt is obvious from the foregoing explanation, in connection with the drawings, that this result may be accomplished by Various formations of the sections.
lVe claiml.. A commutator brush composed of alternating strips or sections of carbon or a carboniferous composition, and strips or sections of metal offset or inclined to the plane of rotation of the commutator so as te present thereto a continuous and approximately uniform area of metallic contact, substantially as and for the purposes set forth.
2. A eommutator brush composed of alternating strips or sections of carbon or a carboniferous composition, and metal, correspondingly corrugated or fluted lengthwise to iit into each other and to present an approximately uniform. metallic contact surface to the commutator transversely to its plane of rotation, substantially as and for the purposes set forth.
A commutator brush composed of alternating sections or strips of a lubricating and scouring composition and of metal inclined or offset to the plane of rotation of the commutator so as to produce a continuous and approximately uniform area of metallic contact to the commutator in the direction of the width of the brush, substantially as and for the purposes set forth.
4. A commutator brush composed of alternating sections of a graphite composition containing a scouring ingredient and of metal, the component sections of the brush being corrugated or fiuted lengthwise so as to present an approximately uniform area of metallic contact to the commutator transversely to the plane of rotation, substantially as and for the purposes set forth.
5. A commutator brush composed of alternating sections of a composition of graphite and scouring material and sections of metal, the component sections of the brush being offset or inclined to the plane of rotation of the commutator so as to present a continuous and approximately uniform area of metallic contact to the commutator, transverse to its plane of rotation, substantially as and for the purposes set forth.
In testimony that we claim the foregoing as our own we affix our signatures in presence of two witnesses.
ROBERT llIRSClI. HERMAN lviEMINGER.
lVitn esses XV. N. STEWART, .Toi-IN A. IflUnLnY.
Publications (1)
Publication Number | Publication Date |
---|---|
US551033A true US551033A (en) | 1895-12-10 |
Family
ID=2619775
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US551033D Expired - Lifetime US551033A (en) | Commutator-brush |
Country Status (1)
Country | Link |
---|---|
US (1) | US551033A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3346804A (en) * | 1963-12-27 | 1967-10-10 | Ryu Keiichiro | Slide voltage regulator |
US3392295A (en) * | 1965-05-03 | 1968-07-09 | Ametek Inc | Electrical brush contacts |
-
0
- US US551033D patent/US551033A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3346804A (en) * | 1963-12-27 | 1967-10-10 | Ryu Keiichiro | Slide voltage regulator |
US3392295A (en) * | 1965-05-03 | 1968-07-09 | Ametek Inc | Electrical brush contacts |
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