US427235A - Arnold a - Google Patents
Arnold a Download PDFInfo
- Publication number
- US427235A US427235A US427235DA US427235A US 427235 A US427235 A US 427235A US 427235D A US427235D A US 427235DA US 427235 A US427235 A US 427235A
- Authority
- US
- United States
- Prior art keywords
- arms
- blocks
- contact
- plates
- metallic
- 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 6
- 229910052799 carbon Inorganic materials 0.000 description 6
- 239000002023 wood Substances 0.000 description 4
- 239000004020 conductor Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000001105 regulatory Effects 0.000 description 2
- 230000000284 resting Effects 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
- H01R39/38—Brush holders
- H01R39/39—Brush holders wherein the brush is fixedly mounted in the holder
Definitions
- This improvement is especially adapted to electric motors for railway-cars in which the motor has to run in opposite directions for propelling the car either one way or the other way.
- Figure 1 is an elevation of the contact-blocks and the devices for holding the same
- Fig. 2 is a side view of one of the hinged arms for supporting such contact blocks.
- the circular range of contact-plates is represented at A, and this may contain any desired number of plates or strips, according to the armature made use of, and the contactblocks B B are preferably of carbon and of the proper size and shape to act with the commutator-plates.
- Each contact-block is within a metallic holder upon the metallic arm 0 or O, and these arms are hinged at 3 4 to the insulating-support D, which maybe of wood or other non-conducting material and bolted to the frame of the motor.
- the ends of these metallic arms 0 O are bent at right angles to form flanges, against which the respective contact-blocks are clamped by the bolts 5 and follower 6, and it is preferable to make use of the bow-springs 7, with notched ends resting against the nuts 8 to prevent such nuts working loose, and it is to be understood that these nuts 8, followers 6, and bolts 5 securely fasten the contact-blocks B B to the respective metallic arms 0 C, and these contact-blocks, being at opposite sides of the comi'nutator cylinder A, convey the electric current through such contact-blocks to the metallic arms and the circuit-connecting screws E E and wires leading to the storage-batteries or other source of electric motive force, and the hinges 3 and t allow the metallic arms 0 C to swing and
- the wooden arms F F are bolted to the metallic arms 0 O and extend beyond the same, and the contractile spring G is between the outer ends of such arms, and is adjustable by the screws 10 and nuts 11, for varying the pressure applied to keep the blocks B K into contact with the commutator-plates, and it will be apparent that the pressure applied to the respective plates must be uniform, as the spring G exerts as much power upon one of the blocks 13 as on the other B.
- These arms F F of wood or other insulated material, may be of any desired length and exert the proper leverage in pressing the blocks .13
Landscapes
- Motor Or Generator Current Collectors (AREA)
Description
(No Model.)
A. A. INGRAHAM.
GOMMUTATOR FOR ELEOTRIU MOTORS.
No. 427,235. Patented May 6, 1890,
UNITED STATES PATENT OFFICE.
ARNOLD A. INGRAI'IAM, OF NEIV YORK, N. Y.
COMMUTATOR FOR ELECTRIC MOTORS SPECIFICATION forming part of Letters Patent No. 427,235, dated May 6, 1890.
Application filed August 16, 1889. Serial No. 320,972. (No model.)
To all whom it may concern:
Be it known that I, ARNOLD A. INGRAHAM, of the city and State of New York, have invented an Improvement in Oommutators for Electric Motors, of which the following is a specification.
This improvement is especially adapted to electric motors for railway-cars in which the motor has to run in opposite directions for propelling the car either one way or the other way. I make use of contact-blocks, preferably of carbon, supported by hinged arms, to which the electric-circuit wires are connected, and the pressure is regulated by an adjustable spring acting upon the lever-extensions of the arms holding the contact-blocks.
In the drawings, Figure 1 is an elevation of the contact-blocks and the devices for holding the same, and Fig. 2 is a side view of one of the hinged arms for supporting such contact blocks.
The circular range of contact-plates is represented at A, and this may contain any desired number of plates or strips, according to the armature made use of, and the contactblocks B B are preferably of carbon and of the proper size and shape to act with the commutator-plates.
Each contact-block is within a metallic holder upon the metallic arm 0 or O, and these arms are hinged at 3 4 to the insulating-support D, which maybe of wood or other non-conducting material and bolted to the frame of the motor. The ends of these metallic arms 0 O are bent at right angles to form flanges, against which the respective contact-blocks are clamped by the bolts 5 and follower 6, and it is preferable to make use of the bow-springs 7, with notched ends resting against the nuts 8 to prevent such nuts working loose, and it is to be understood that these nuts 8, followers 6, and bolts 5 securely fasten the contact-blocks B B to the respective metallic arms 0 C, and these contact-blocks, being at opposite sides of the comi'nutator cylinder A, convey the electric current through such contact-blocks to the metallic arms and the circuit-connecting screws E E and wires leading to the storage-batteries or other source of electric motive force, and the hinges 3 and t allow the metallic arms 0 C to swing and the blocks B 1-3 to remain in contact with the commutator-plates as the ends of such blocks wear away, or as the parts of the motor may be exposed to slight changes of position due to the oscillation or vibration of the car in traveling upon the track.
The wooden arms F F are bolted to the metallic arms 0 O and extend beyond the same, and the contractile spring G is between the outer ends of such arms, and is adjustable by the screws 10 and nuts 11, for varying the pressure applied to keep the blocks B K into contact with the commutator-plates, and it will be apparent that the pressure applied to the respective plates must be uniform, as the spring G exerts as much power upon one of the blocks 13 as on the other B. These arms F F, of wood or other insulated material, may be of any desired length and exert the proper leverage in pressing the blocks .13
3 against the commutator-plates.
If the carbon brushes or blocks should wear away too much, the metal holders for the same would come into contact with the commutatorplates and injure the same. To prevent this the cross-bar or stop II, of insulating material, is provided to limit the movement of the holders toward the commutator-plates. This stop m ay be supported in any convenient manner. I have shown by dotted lines a connection to the support D.
I claim as my invention- 1. The combination, with the commutator plates and the blocks B B, of the hinged metallic arms 0 G, to which the commutatorblocks are attached, the insulating-arms F F, extending from the metallic arms C C, and the contractile spring G between the outer ends of such insulating-arms, substantially as set forth.
2. The combination, with the commutatorblocks B 13, the holders for the same, and the metallic arms 0 O, to which the commutatorblocks and holders are connected, of insulae iug-extensions to the arms and a spring to draw the arms toward each other, and a stop ll to limit the movement, substantially as set forth.
Signed by me this 13th dayof August, 1889.
ARNOLD A. INGRAHAM.
\Vitnesscs: I
GEO. T. PINCKNEY, WILLIAM; G. Moran
Publications (1)
Publication Number | Publication Date |
---|---|
US427235A true US427235A (en) | 1890-05-06 |
Family
ID=2496145
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US427235D Expired - Lifetime US427235A (en) | Arnold a |
Country Status (1)
Country | Link |
---|---|
US (1) | US427235A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2493082A (en) * | 1947-04-23 | 1950-01-03 | Nehrke Charles | Electric motor |
-
0
- US US427235D patent/US427235A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2493082A (en) * | 1947-04-23 | 1950-01-03 | Nehrke Charles | Electric motor |
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