GB706766A - Improvements in and relating to commutators - Google Patents

Improvements in and relating to commutators

Info

Publication number
GB706766A
GB706766A GB3015849A GB3015849A GB706766A GB 706766 A GB706766 A GB 706766A GB 3015849 A GB3015849 A GB 3015849A GB 3015849 A GB3015849 A GB 3015849A GB 706766 A GB706766 A GB 706766A
Authority
GB
United Kingdom
Prior art keywords
plastic
segments
commutator
moulding
hub
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
GB3015849A
Inventor
Llewellyn George Roberts
Walter Henry Webb
John Lawton Ramsey
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.)
Watliff Co Ltd
Original Assignee
Watliff Co Ltd
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
Priority to BE502652D priority Critical patent/BE502652A/xx
Priority to NL74752D priority patent/NL74752C/xx
Application filed by Watliff Co Ltd filed Critical Watliff Co Ltd
Priority to GB3015849A priority patent/GB706766A/en
Priority to FR1050274D priority patent/FR1050274A/en
Priority to US222767A priority patent/US2674784A/en
Priority to DEW5731A priority patent/DE1029920B/en
Priority to CH293251D priority patent/CH293251A/en
Publication of GB706766A publication Critical patent/GB706766A/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
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/06—Manufacture of commutators
    • H01R43/08—Manufacture of commutators in which segments are not separated until after assembly

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Motor Or Generator Current Collectors (AREA)

Abstract

706,766. Commutators for dynamo-electric machines. WATLIFFE CO., Ltd. Feb. 23, 1951 [Nov. 24, 1949], No. 30158/49. Class 35 A moulded commutator is made from a solid blank having segments 4 separated by radial slots 7 and joined by a central hub 3, by moulding a first plastic 8 between the segments and in annular grooves 2 to bond them together independently of the hub, boring out the hub, and moulding a second plastic 10 to form the insulating core of the commutator. Steel reinforcing rings 11 are secured in the grooves 2 by embedding in the second plastic 10 which also fixes the mounting bush 12. Since two moulding processes are used, different plastics having suitable characteristics can be used. The outer surface of the commutator is finally machined to remove the outer layer of plastic 8. The original blank may be machined from the solid or, in a modification, rolled up from a strip of metal having suitable slots. In this case the metal joining the segments is in the form of an external ring, which is subsequently machined off.
GB3015849A 1949-11-24 1949-11-24 Improvements in and relating to commutators Expired GB706766A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
BE502652D BE502652A (en) 1949-11-24
NL74752D NL74752C (en) 1949-11-24
GB3015849A GB706766A (en) 1949-11-24 1949-11-24 Improvements in and relating to commutators
FR1050274D FR1050274A (en) 1949-11-24 1951-04-14 Switch enhancements
US222767A US2674784A (en) 1949-11-24 1951-04-25 Commutator
DEW5731A DE1029920B (en) 1949-11-24 1951-05-02 Process for the production of commutators and commutators produced by this process
CH293251D CH293251A (en) 1949-11-24 1951-05-08 A method of manufacturing an electrical machine manifold and a manifold obtained by this method.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3015849A GB706766A (en) 1949-11-24 1949-11-24 Improvements in and relating to commutators

Publications (1)

Publication Number Publication Date
GB706766A true GB706766A (en) 1954-04-07

Family

ID=10303219

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3015849A Expired GB706766A (en) 1949-11-24 1949-11-24 Improvements in and relating to commutators

Country Status (5)

Country Link
BE (1) BE502652A (en)
CH (1) CH293251A (en)
FR (1) FR1050274A (en)
GB (1) GB706766A (en)
NL (1) NL74752C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4420875A (en) * 1979-12-05 1983-12-20 Mavilor Systemes Method of mounting and casting a flat rotor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4420875A (en) * 1979-12-05 1983-12-20 Mavilor Systemes Method of mounting and casting a flat rotor

Also Published As

Publication number Publication date
BE502652A (en)
NL74752C (en)
FR1050274A (en) 1954-01-06
CH293251A (en) 1953-09-15

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