GB940046A - Improvements relating to commutators for dynamo-electric machines - Google Patents

Improvements relating to commutators for dynamo-electric machines

Info

Publication number
GB940046A
GB940046A GB3394261A GB3394261A GB940046A GB 940046 A GB940046 A GB 940046A GB 3394261 A GB3394261 A GB 3394261A GB 3394261 A GB3394261 A GB 3394261A GB 940046 A GB940046 A GB 940046A
Authority
GB
United Kingdom
Prior art keywords
segments
end discs
rack
metal
commutators
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
Application number
GB3394261A
Inventor
Kenneth Watkin
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.)
Ferranti International PLC
Original Assignee
Ferranti 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 Ferranti PLC filed Critical Ferranti PLC
Priority to GB3394261A priority Critical patent/GB940046A/en
Publication of GB940046A publication Critical patent/GB940046A/en
Expired legal-status Critical Current

Links

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
    • H01R39/04—Commutators

Landscapes

  • Motor Or Generator Current Collectors (AREA)

Abstract

940,046. Making commutators. FERRANTI Ltd. Sept. 5, 1962 [Sept. 22, 1961], No. 33942/61. Heading B3A. [Also in Division H2] A commutator comprises a number of spacedapart metal segments 1 sealed to ceramic end discs 2 and is cooled by gas passing through apertures 6 in the end discs and out through the spaces between segments. The commutator is constructed by machining a slab of copper to form a rack having the required number of segments joined by a bridge of metal, Fig. 3. After bending the rack round a mandrel, the ceramic end discs are attached by metallizing the faces and brazing them to the rack after which the segments are separated by removing the metal bridge; mounting ferrules 5 are also brazed in place. To increase the flow of cooling gas the spaces between segments may be inclined to the radial direction or curved to act as an impeller, Fig. 6 (not shown), also the end discs may be provided with air intake scoops.
GB3394261A 1961-09-22 1961-09-22 Improvements relating to commutators for dynamo-electric machines Expired GB940046A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3394261A GB940046A (en) 1961-09-22 1961-09-22 Improvements relating to commutators for dynamo-electric machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3394261A GB940046A (en) 1961-09-22 1961-09-22 Improvements relating to commutators for dynamo-electric machines

Publications (1)

Publication Number Publication Date
GB940046A true GB940046A (en) 1963-10-23

Family

ID=10359367

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3394261A Expired GB940046A (en) 1961-09-22 1961-09-22 Improvements relating to commutators for dynamo-electric machines

Country Status (1)

Country Link
GB (1) GB940046A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2458156A3 (en) * 1979-05-29 1980-12-26 Dahl Paul Com Fab Commutator for high speed rotor - is made from copper strip by stamping and injection moulding
WO2012022622A1 (en) * 2010-08-18 2012-02-23 BSH Bosch und Siemens Hausgeräte GmbH Electric machine with a commutator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2458156A3 (en) * 1979-05-29 1980-12-26 Dahl Paul Com Fab Commutator for high speed rotor - is made from copper strip by stamping and injection moulding
WO2012022622A1 (en) * 2010-08-18 2012-02-23 BSH Bosch und Siemens Hausgeräte GmbH Electric machine with a commutator

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