US849511A - Brush for dynamo-electric machinery. - Google Patents

Brush for dynamo-electric machinery. Download PDF

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Publication number
US849511A
US849511A US34521006A US1906345210A US849511A US 849511 A US849511 A US 849511A US 34521006 A US34521006 A US 34521006A US 1906345210 A US1906345210 A US 1906345210A US 849511 A US849511 A US 849511A
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United States
Prior art keywords
brush
cap
dynamo
electric machinery
strip
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
Application number
US34521006A
Inventor
Charles William Speirs
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.)
Morgan Advanced Materials PLC
Original Assignee
Morgan Crucible Co PLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Morgan Crucible Co PLC filed Critical Morgan Crucible Co PLC
Priority to US34521006A priority Critical patent/US849511A/en
Application granted granted Critical
Publication of US849511A publication Critical patent/US849511A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00Rotary current collectors, distributors or interrupters
    • H01R39/02Details for dynamo electric machines
    • H01R39/36Connections of cable or wire to brush

Definitions

  • This invention relates to brushes for dynamo-electric machinery and to that class of brush which is formed by compressing flaked 7 natural plumbago, either alone or mixed with metal orother materials, into blocks of the desired shape and without burning, the obect of the said invention being to provide improved means Tor connecting all layers or laminations in such brushes together and with the leads or conductors.
  • a metal plate or cap is applied to the brush during the manufacture of the game, to which metal plate the leads or conductors can be connected in any desirable manner.
  • the late or cap is formed at its ends with flanged lips or projections which constitute recesses into whlch the material of the brush will be compressed and which serve for keiying the said'cap upon the brush.
  • This cap is aid in the mold before the plumbago, and the latter is pressed into the cap during the compressing operation.
  • Figure 1 is an elevation of a brush provided with a cap in accordance with the invention.
  • Fig. 2 is a longitudinal section of the same, and
  • Fig. 3 is an edge view.
  • Fig. 4 is a sectional front elevation of a brush, showing the arrangement of a flexible lead attached to the under side of the cap, and
  • Fig. 5 is a sectional edge View of the same.
  • a indicates the metal cap, which, as shown, is of a size corresponding to the width and thickness of the brush 1), the ends of this cap being provided with the flanged ends I) I), forming the recesses c c, or being provided with other suitable projections or recesses.
  • This cap is inserted into the mold at one end thereof, and the prepared material o'l' wluch I the bruslris to be formed is then fed into the mold and compressed in the usual manner, the material conr ressed in the recesses c 0 serving to retaih t e cap in position.
  • the lead or conductor may be connected to this cap in any suitable manner.
  • Figs. 4 and 5 the lead dis represented as being attached to the under side of the cap, a strip a of the said cap being pressed down in order to form a slot or pocket through which the end of the load can be inserted, the said end being fixed by pressing back the strip onto it.
  • the cap is placed in the mold, as hereinbefore described, and the lead is inserted through a hole in the bottom of the mold with an eyelete around it, so that when the pressure is a plied the eyelet will be fixed, while the en portions of the lead will become embedded in the'body of the ma terial, as clearly indicated in Fig. 5.
  • a commutator-brush composed of compressed particles and provided with a metal strip having one entire face thereof in intimate contact with said compressed particles and havingportions embedded therein to permanently attach the same to said brush, substantially as described.

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  • Motor Or Generator Current Collectors (AREA)

Description

' PATENTED APR. 9, 1907.
' G. W. SPEIRS.
BRUSH FOR DYNAMO ELECTRIC MACHINERY.
APPLICATION FILED NOV.26,1906.
[muawfor MW 57% 7 .ffzm' W UNITED STATES PATEN T UFFIGEL CHARLES WILLIAM SPEIRS, OF LONDON, ENGLAND, ASSlG-NOR TO THE MOR- GAN CRUCIBLE COMPANY, LIMITED, OF LONDON, ENGLAND.
Specification of Letters Eatent.
Patented Aprn 9, 1907.
Application filed November 26, 1906. Serial No 345,219.
To all whom it may concern:
Be it known that I, CHARLES WILLIAM Spams, a subject of the King of Great Britain, residing at Battersea Works, Batter-sea, London, England, have invented new and useful Improvements in Brushes for Dynainc-Electric Machinery, of which the following is a specification.
This invention relates to brushes for dynamo-electric machinery and to that class of brush which is formed by compressing flaked 7 natural plumbago, either alone or mixed with metal orother materials, into blocks of the desired shape and without burning, the obect of the said invention being to provide improved means Tor connecting all layers or laminations in such brushes together and with the leads or conductors.
According to the invention a metal plate or cap is applied to the brush during the manufacture of the game, to which metal plate the leads or conductors can be connected in any desirable manner.
In a suitable arrangement for carrying out the invention the late or cap is formed at its ends with flanged lips or projections which constitute recesses into whlch the material of the brush will be compressed and which serve for keiying the said'cap upon the brush. This cap is aid in the mold before the plumbago, and the latter is pressed into the cap during the compressing operation.
In practice a flexible lead is advantageously attached to the under side of the cap before the material is pressed into it, an eye or ferrule being arranged around that part of the lead which extends through the body of the brush, the said eye or ferrule being also partly embedded in the material.
' In the accompanying drawings, Figure 1 is an elevation of a brush provided with a cap in accordance with the invention. Fig. 2 is a longitudinal section of the same, and Fig. 3 is an edge view. Fig. 4 is a sectional front elevation of a brush, showing the arrangement of a flexible lead attached to the under side of the cap, and Fig. 5 is a sectional edge View of the same.
a indicates the metal cap, which, as shown, is of a size corresponding to the width and thickness of the brush 1), the ends of this cap being provided with the flanged ends I) I), forming the recesses c c, or being provided with other suitable projections or recesses.
This cap is inserted into the mold at one end thereof, and the prepared material o'l' wluch I the bruslris to be formed is then fed into the mold and compressed in the usual manner, the material conr ressed in the recesses c 0 serving to retaih t e cap in position.
Owing to the great pressure to which the brush is subjected, it Will bra-understood that a very intimate connection is roduced between the surface of the cap am the material of the brush. As hereinbefore stated, the lead or conductor may be connected to this cap in any suitable manner.
In Figs. 4 and 5 the lead dis represented as being attached to the under side of the cap, a strip a of the said cap being pressed down in order to form a slot or pocket through which the end of the load can be inserted, the said end being fixed by pressing back the strip onto it. In making this brush the cap is placed in the mold, as hereinbefore described, and the lead is inserted through a hole in the bottom of the mold with an eyelete around it, so that when the pressure is a plied the eyelet will be fixed, while the en portions of the lead will become embedded in the'body of the ma terial, as clearly indicated in Fig. 5.
Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that What I claim. is
1. A commutator-brush composed of compressed particles and provided with a metal strip having one entire face thereof in intimate contact with said compressed particles and havingportions embedded therein to permanently attach the same to said brush, substantially as described.
2. The combination with a commutatorbrush composed of compressed particles, of a metal strip permanently secured to said. brush and a conductor having a .portion thereof embedded insaid brush and connected with. said metal strip, substantially as described.
3. The combination with a commutator-' brush composed of compressed particles, of an eyelet partly embedded therein and a con ductor having a portion embedded in said brush and a portion projecting from said brush throughsaid eyelet, substantially as described.
4. The combination with a commutatorbrush composed of compressed particles, of a end passing through said slots in. ssidee- E pressed portion of said strip and firmly retained in contact with sgmid strip, substantially as described.
5. The combination vith a commutatorbrush composed of compressed particles, of a metal strip secured to said. brush, said strip being provided with a depressed portienheving slots therein, and a eonduetorhaving its Bough said slot .'d strip.
! :essed pol-tie]! i said ceudm er Lv R. CASEY.
US34521006A 1906-11-26 1906-11-26 Brush for dynamo-electric machinery. Expired - Lifetime US849511A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US34521006A US849511A (en) 1906-11-26 1906-11-26 Brush for dynamo-electric machinery.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US34521006A US849511A (en) 1906-11-26 1906-11-26 Brush for dynamo-electric machinery.

Publications (1)

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US849511A true US849511A (en) 1907-04-09

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Family Applications (1)

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US34521006A Expired - Lifetime US849511A (en) 1906-11-26 1906-11-26 Brush for dynamo-electric machinery.

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3025422A (en) * 1958-04-24 1962-03-13 Union Carbide Corp Shuntless brush

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3025422A (en) * 1958-04-24 1962-03-13 Union Carbide Corp Shuntless brush

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