GB620930A - Improvements in or relating to commutators for dynamo-electric machines - Google Patents

Improvements in or relating to commutators for dynamo-electric machines

Info

Publication number
GB620930A
GB620930A GB315147A GB315147A GB620930A GB 620930 A GB620930 A GB 620930A GB 315147 A GB315147 A GB 315147A GB 315147 A GB315147 A GB 315147A GB 620930 A GB620930 A GB 620930A
Authority
GB
United Kingdom
Prior art keywords
ring
depressions
commutators
dynamo
smith
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
GB315147A
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.)
ALEXANDER HENRY SMITH
ALEXANDER MAURICE SMITH
Original Assignee
ALEXANDER HENRY SMITH
ALEXANDER MAURICE SMITH
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 ALEXANDER HENRY SMITH, ALEXANDER MAURICE SMITH filed Critical ALEXANDER HENRY SMITH
Priority to GB315147A priority Critical patent/GB620930A/en
Publication of GB620930A publication Critical patent/GB620930A/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

620,930. Commutators for dynamo-electric machines. SMITH, A. H., and SMITH, A. M. Feb. 3, 1947, No. 3151. [Class 35] A commutator in which the bars are embedded in moulded insulating material employs a metal ring which is first folded as in Fig. 1 and then, ih sequential operations, (1) pressed to form external angular depressions B3 and internal recesses with flat bottoms B4, (2) after annealing, perforated along the roots of the external depressions, the extruded metal forming either a single arc or one or more projections of other shape such as angularly disposed legs, both being shown in Fig. 4, and (3) further pressing to contract the ring, Fig. 5, so that the depressions B3 are closed up entirely and the internal recesses become parallel-sided as at B5. After cleaning, the ring, with a knurled or splined central ring to fit a shaft, is moulded under heat and pressure with insulating material. Subsequently, the surplus metal is turned off to separate the commutator bars, and an end flange may be formed and slit or drilled for armature connections.
GB315147A 1947-02-03 1947-02-03 Improvements in or relating to commutators for dynamo-electric machines Expired GB620930A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB315147A GB620930A (en) 1947-02-03 1947-02-03 Improvements in or relating to commutators for dynamo-electric machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB315147A GB620930A (en) 1947-02-03 1947-02-03 Improvements in or relating to commutators for dynamo-electric machines

Publications (1)

Publication Number Publication Date
GB620930A true GB620930A (en) 1949-04-01

Family

ID=9752890

Family Applications (1)

Application Number Title Priority Date Filing Date
GB315147A Expired GB620930A (en) 1947-02-03 1947-02-03 Improvements in or relating to commutators for dynamo-electric machines

Country Status (1)

Country Link
GB (1) GB620930A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2953698A (en) * 1958-05-31 1960-09-20 Fiat Spa Commutator for dynamo-electric machines and method of manufacturing
US4629923A (en) * 1985-08-09 1986-12-16 Robert Bosch Gmbh Commutator for dynamo electric machines
WO1996033534A1 (en) * 1995-04-21 1996-10-24 Firma Anton Holzhauer Umformtechnik Collector manufacturing process

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2953698A (en) * 1958-05-31 1960-09-20 Fiat Spa Commutator for dynamo-electric machines and method of manufacturing
US4629923A (en) * 1985-08-09 1986-12-16 Robert Bosch Gmbh Commutator for dynamo electric machines
WO1996033534A1 (en) * 1995-04-21 1996-10-24 Firma Anton Holzhauer Umformtechnik Collector manufacturing process
US6108898A (en) * 1995-04-21 2000-08-29 Firma Anton Holzhauer Umformtechnik Commutator manufacturing process

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