GB655825A - A process for the manufacture of commutator segments, for use in electric motors, generators, and such like equipment, from copper oxide powder - Google Patents

A process for the manufacture of commutator segments, for use in electric motors, generators, and such like equipment, from copper oxide powder

Info

Publication number
GB655825A
GB655825A GB2995348A GB2995348A GB655825A GB 655825 A GB655825 A GB 655825A GB 2995348 A GB2995348 A GB 2995348A GB 2995348 A GB2995348 A GB 2995348A GB 655825 A GB655825 A GB 655825A
Authority
GB
United Kingdom
Prior art keywords
commutator segments
copper oxide
oxide powder
powder
generators
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
GB2995348A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB2995348A priority Critical patent/GB655825A/en
Publication of GB655825A publication Critical patent/GB655825A/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

Landscapes

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

Abstract

655,825. Powder metallurgy; making commutator segments. ASKAM, E. S. Nov. 18, 1948, No. 29953. [Classes 83 (ii) and 83 (iv)] A process for manufacturing commutator segments comprises pressing copper or copper oxide powder, graphite and stearin in a shaped mould, sintering the compact in a protective atmosphere and again pressing in a mould. Silica and/or beryllium powder may be added. The powders are between 100 and 400 mesh and preferably dendritic in shape. The compacts are pressed at 5 to 40 tons per square inch and sintered at 800-1080‹ C. for 5 to 30 minutes in a hydrogen, cracked ammonia or partially-burnt town gas atmosphere. They are then allowed to cool for 40 minutes in the same atmosphere and sized at 15 tons per square inch. A preferred powder mixture contains 2 per cent graphite and “ per cent stearin by weight.
GB2995348A 1948-11-18 1948-11-18 A process for the manufacture of commutator segments, for use in electric motors, generators, and such like equipment, from copper oxide powder Expired GB655825A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2995348A GB655825A (en) 1948-11-18 1948-11-18 A process for the manufacture of commutator segments, for use in electric motors, generators, and such like equipment, from copper oxide powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2995348A GB655825A (en) 1948-11-18 1948-11-18 A process for the manufacture of commutator segments, for use in electric motors, generators, and such like equipment, from copper oxide powder

Publications (1)

Publication Number Publication Date
GB655825A true GB655825A (en) 1951-08-01

Family

ID=10299878

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2995348A Expired GB655825A (en) 1948-11-18 1948-11-18 A process for the manufacture of commutator segments, for use in electric motors, generators, and such like equipment, from copper oxide powder

Country Status (1)

Country Link
GB (1) GB655825A (en)

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