US475668A - Commutator-brush - Google Patents
Commutator-brush Download PDFInfo
- Publication number
- US475668A US475668A US475668DA US475668A US 475668 A US475668 A US 475668A US 475668D A US475668D A US 475668DA US 475668 A US475668 A US 475668A
- Authority
- US
- United States
- Prior art keywords
- brush
- commutator
- charles
- brushes
- perforated
- 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
- 239000002184 metal Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- LTMHDMANZUZIPE-PUGKRICDSA-N Digoxin Chemical compound C1[C@H](O)[C@H](O)[C@@H](C)O[C@H]1O[C@@H]1[C@@H](C)O[C@@H](O[C@@H]2[C@H](O[C@@H](O[C@@H]3C[C@@H]4[C@]([C@@H]5[C@H]([C@]6(CC[C@@H]([C@@]6(C)[C@H](O)C5)C=5COC(=O)C=5)O)CC4)(C)CC3)C[C@@H]2O)C)C[C@@H]1O LTMHDMANZUZIPE-PUGKRICDSA-N 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
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
- My invention consists in an improvement in commutator-brushes for dynamos or electric motors hereinafter fully described and claimed.
- Figure 1 is a plan view of a commutator, showing one brush and a portion of the brushholding mechanism; and Fig. 2 is a detail perspective View of a brush embodying my in- Vention.
- O represents the commutator of a dynamo or motor
- R the rocker-arm which carries the brush-holders, one of which is shown at H
- S represents a set-screw, which clamps the brush in the holder H. All of these parts are old and well known and form no part of my invention.
- B represents my improved brush, consisting' of a thin sheet of metal, preferably copper, perforated as shown at I.
- the perforations P are preferably staggered, as shown, as this causes the end of the brush to wear better; but they may of course be in regular lines.
- the perforations P permit the access of air to theinterior of the brush and prevent the overheating, which is such a great defect in brushes as ordinarily made.
- each brush will be made up of a number of thin perforated strips, as shown in Fig. 2.
- a commutator-brush consisting of a strip of perforated sheet metal.
- a comm utator-brush consisting of strips of perforated sheet metal.
Description
(No Model.)
0. L. GOFPIN.
GOMMUTATOR BRUSH.
No. 475,668. Patented May 24, 1892.
00cc M y 3 00000000 g 1 M i/ mmzwma m9 %.M9wm- 57M THE NORRIS vsmm m, PMuTo-umm. wnsmcrou, u c.
UNITED STATES PATENT J OFFICE.
CHARLES L. COFFIN, OF DETROIT, MICHIGAN.
COMMUTATOR-BRUSH.
SPECIFICATION forming part of Letters Patent No. 475,668, dated May 24, 1892 Application filed September 5, 1891. Serial 110,404,844. (N0 model.)
To all whom it Hwy concern.-
Be it known that 1, CHARLES L. 00mm, of Detroit, in the county of \Vayne and State of Michigan, have invented a new and useful Improvement in Commutator-Brushes, of which the following is a specification.
My invention consists in an improvement in commutator-brushes for dynamos or electric motors hereinafter fully described and claimed.
Figure 1 is a plan view of a commutator, showing one brush and a portion of the brushholding mechanism; and Fig. 2 is a detail perspective View of a brush embodying my in- Vention.
O represents the commutator of a dynamo or motor; R, the rocker-arm which carries the brush-holders, one of which is shown at H; and S represents a set-screw, which clamps the brush in the holder H. All of these parts are old and well known and form no part of my invention.
B represents my improved brush, consisting' of a thin sheet of metal, preferably copper, perforated as shown at I. The perforations P are preferably staggered, as shown, as this causes the end of the brush to wear better; but they may of course be in regular lines. The perforations P permit the access of air to theinterior of the brush and prevent the overheating, which is such a great defect in brushes as ordinarily made.
In practice each brush will be made up of a number of thin perforated strips, as shown in Fig. 2.
What I claim as my invention, and desire to secure by Letters Patent, is
1. A commutator-brush consisting of a strip of perforated sheet metal.
2. A comm utator-brush consisting of strips of perforated sheet metal.
CHARLES L. COFFIN. Witnesses:
HENRY B. Lorr-rnor, GEO. H. LOTI-IROP.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US475668A true US475668A (en) | 1892-05-24 |
Family
ID=2544524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US475668D Expired - Lifetime US475668A (en) | Commutator-brush |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US475668A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3392295A (en) * | 1965-05-03 | 1968-07-09 | Ametek Inc | Electrical brush contacts |
-
0
- US US475668D patent/US475668A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3392295A (en) * | 1965-05-03 | 1968-07-09 | Ametek Inc | Electrical brush contacts |
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