US661538A - Brush-holder for dynamo-electric machines. - Google Patents

Brush-holder for dynamo-electric machines. Download PDF

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Publication number
US661538A
US661538A US73005999A US1899730059A US661538A US 661538 A US661538 A US 661538A US 73005999 A US73005999 A US 73005999A US 1899730059 A US1899730059 A US 1899730059A US 661538 A US661538 A US 661538A
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United States
Prior art keywords
brush
piece
holding
holder
engaging part
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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
Application number
US73005999A
Inventor
Christian W Kragh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NORTHERN ELECTRICAL MANUFACTURING Co
Original Assignee
NORTHERN ELECTRICAL Manufacturing Co
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Filing date
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Application filed by NORTHERN ELECTRICAL Manufacturing Co filed Critical NORTHERN ELECTRICAL Manufacturing Co
Priority to US73005999A priority Critical patent/US661538A/en
Application granted granted Critical
Publication of US661538A publication Critical patent/US661538A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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

  • My invention relates to brush-holders for dynamo-electric machines, and has for its object to provide a new and improved brushholder of this description.
  • FIG. 1 is a side View of a brush-holder embodying my invention.
  • Fig. 2 is a plan view of the/device shown in Fig. 1.
  • Fig. 3 is a sectional view of a part of the brush-holder attached to the stud or bolt by means of which the brush-holder is held in place.
  • One of the objects of my invention is to provide a brush-holder which will elastically press the brush against the commutator.
  • the brush A which makes contact with the commutatorof the machine, may be made of any suitable material and is attached to the holding-piece B.
  • the brush is preferably connected to the holding-piece in some suitable manner, so as to avoid a sliding contact.
  • two screws A A pass through the brush and clamp it firmly to the holding-piece B.
  • the holding-piece B may be made of any desired form and, as herein shown, is provided at its end with two branches B B, said branches being provided with openings for the supporting stud or bolt B This bolt passes loosely through these openings, so that the holding-piece B is free to move about the bolt.
  • an engaging part which engages the supportingbolt B
  • This engaging part may be of any suitable construction and, as herein shown, consists of a split collar, the split ends of which are connected by means of a clampingscrew C, so that the engaging part may be rigidlyclamped to the bolt 13*. It will be seen that by this construction the engaging part is adjustably clamped to its support.
  • the holding-piece B is elastically connected to the engaging part C.
  • this elastic connection is made by the spring B which is attached at one end to the engaging part C, the other end engaging the holding-piece B.
  • This spring passes between the branches B, as shown.
  • I provide the spring with a slot B The end of this spring presses upon the upper face of the holding-piece B, and a screw B connects the spring and the holding-piece B together.
  • a brush-holder for dynamo-electric machines, the combination of a holding-piece to which the brush is attached, a support upon which said holdingpiece is movably mounted, a flat spring attached to said support and connected with said holding-piece by a sliding contact and so as to elastically press the brush against the commutator, and a conductor fixedly attached to the support and to the holding-piece so as to give a fixed connection around the connection between the support and holding-piece.
  • a brush-holder for dynamo-electric machines comprising a holding-piece to which the brush is connected, said holding-piece provided with two branches and movably mounted upon a support, an engaging part between said branches, said engaging part securely attached to said support, a spring connected with said engaging part and pass ing up between the branches of the holdingpiece, said spring engaging the holding-piece on its upper face, so as to elastically press the brush against the commutator.
  • a brush-holder for dynamo-electric machines comprising a holding-piece to which the brush is connected, said holding-piece provided with two branches and movably mounted upon a support, an engaging part between said branches, said engaging part securely attached to said support, a spring connected with said engaging part and passing up between the branches of the holdingpiece, said spring engaging the holding-piece on its upper face, so as to elastically press the brush against the commutator, and acond uctor fixedly attached at one end to the hold ing-piece and at the other end to the engaging part.

Landscapes

  • Motor Or Generator Current Collectors (AREA)

Description

N0. 66I,538.- Patented Nov. [3. I900.
C.'W. KRAGH.
BRUSH HOLDER FOR D YNAMO ELECTRIC MACHINES. (Application filed Sept. 11. 1899.
(No Model.)
WWW l 1 tUNrTnD STATES PATIENT @rrrch.
CHRISTIAN lV. KRAGH, OF MADISON, WISCONSIN, ASSIGNOR TO THE NORTHERN ELECTRICAL MANUFACTURlNG COMPANY, OF SAME PLACE.
BRUSH-HOLDER FUR DYNAMQ-ELECTMG MACi-HNES.
SPECIFICATION forming part of Letters Patent No. 661,538, dated November 13, 1900.
Application filed September 11, 1899. serial 1t 0. 730,059. the model.)
To all whom it 'mcty concern.-
Be it known that I, CHRISTIAN W. KRAGH, a citizen of the United States, residing at Madison, in the county of Dane and State of VViscousin, have invented a certain new and useful Improvement in Brush-Holders for Dynamo-Electric Machines, of which the following is a specification.
My invention relates to brush-holders for dynamo-electric machines, and has for its object to provide a new and improved brushholder of this description.
My invention is illustrated in the accompanying drawings, wherein- Figure 1 is a side View of a brush-holder embodying my invention. Fig. 2 is a plan view of the/device shown in Fig. 1. Fig. 3 is a sectional view of a part of the brush-holder attached to the stud or bolt by means of which the brush-holder is held in place.
Like lettersrefer to like parts throughout the several figures.
One of the objects of my invention is to provide a brush-holder which will elastically press the brush against the commutator.
The brush A, which makes contact with the commutatorof the machine, may be made of any suitable material and is attached to the holding-piece B. The brush is preferably connected to the holding-piece in some suitable manner, so as to avoid a sliding contact. As illustrated in the drawings, two screws A A pass through the brush and clamp it firmly to the holding-piece B. I prefer to provide an outer conducting-piece A the brush being securely clamped between this piece and the end of the holding-piece B, so as to insure a good electrical contact between the parts. The holding-piece B may be made of any desired form and, as herein shown, is provided at its end with two branches B B, said branches being provided with openings for the supporting stud or bolt B This bolt passes loosely through these openings, so that the holding-piece B is free to move about the bolt. Between the branches B is an engaging part 0, which engages the supportingbolt B This engaging part may be of any suitable construction and, as herein shown, consists of a split collar, the split ends of which are connected by means of a clampingscrew C, so that the engaging part may be rigidlyclamped to the bolt 13*. It will be seen that by this construction the engaging part is adjustably clamped to its support. The holding-piece B is elastically connected to the engaging part C. Any suitable means for this purpose may be used. As herein illustrated, this elastic connection is made by the spring B which is attached at one end to the engaging part C, the other end engaging the holding-piece B. This spring passes between the branches B, as shown. In order to compensate for the relative movement of the holding-piece B and the engaging part 0, I provide the spring with a slot B The end of this spring presses upon the upper face of the holding-piece B, and a screw B connects the spring and the holding-piece B together. It will be seen that by this construction the spring and the holding-piece B are permitted to move relatively, the movement in one direction being limited by the engagement of the screw B with the inner end of the slot B It will also be seen that by this construction the brush is elastically pressed against the commutator and that the brush may be controlled by adjusting the position of the engaging part C. In order to do away with the sliding contact between the holdingpiece B and the supporting stud or bolt B I connect the engaging part 0 with the holdingpiece B by means of the contact-spring O Said contact spring passes between the branches B of the holding-piece, as shown, and has its end connected to a cross-piece B, connecting said branches. This contactspring permits the relative movement of the holding-piece B and the engaging part 0, and yet provides a stationary contact between them.
In practice several of the brush-holders aregenerally connected to a single supportingstud, and a series of these studs are used. It is of course evident that the brush may be used in any desired manner, and I do not limit myself in this particular. It will be seen that when several brush-holders are attached to a single supporting-stud any one of the brush-holders may be removed from the commutator by unclamping the engaging part 0 and may then be moved to a position out of the way, so that any desired change or repair may be made while the machine is in operation.
I have described in detail a particular construction embodying my invention; but it is of course evident that this construction may be varied in many particulars without departing from the spirit of my invention, and I therefore do not limit myself to the construction shown.
I claim 1. In a brush-holder for dynamo-electric machines, the combination of a holding-piece to which the brush is attached, a support upon which said holdingpiece is movably mounted, a flat spring attached to said support and connected with said holding-piece by a sliding contact and so as to elastically press the brush against the commutator, and a conductor fixedly attached to the support and to the holding-piece so as to give a fixed connection around the connection between the support and holding-piece.
2. A brush-holder for dynamo-electric machines, comprising a holding-piece to which the brush is connected, said holding-piece provided with two branches and movably mounted upon a support, an engaging part between said branches, said engaging part securely attached to said support, a spring connected with said engaging part and pass ing up between the branches of the holdingpiece, said spring engaging the holding-piece on its upper face, so as to elastically press the brush against the commutator.
3. A brush-holder for dynamo-electric machines, comprising a holding-piece to which the brush is connected, said holding-piece provided with two branches and movably mounted upon a support, an engaging part between said branches, said engaging part securely attached to said support, a spring connected with said engaging part and passing up between the branches of the holdingpiece, said spring engaging the holding-piece on its upper face, so as to elastically press the brush against the commutator, and acond uctor fixedly attached at one end to the hold ing-piece and at the other end to the engaging part.
CHRISTIAN \V. KRAGH.
Witnesses:
FRANK L. STAGG, AUGUST J. BUENZLI.
US73005999A 1899-09-11 1899-09-11 Brush-holder for dynamo-electric machines. Expired - Lifetime US661538A (en)

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US73005999A US661538A (en) 1899-09-11 1899-09-11 Brush-holder for dynamo-electric machines.

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Application Number Priority Date Filing Date Title
US73005999A US661538A (en) 1899-09-11 1899-09-11 Brush-holder for dynamo-electric machines.

Publications (1)

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US661538A true US661538A (en) 1900-11-13

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