GB771292A - Improvements in or relating to brush holder assemblies for electrical equipment - Google Patents

Improvements in or relating to brush holder assemblies for electrical equipment

Info

Publication number
GB771292A
GB771292A GB24998/55A GB2499855A GB771292A GB 771292 A GB771292 A GB 771292A GB 24998/55 A GB24998/55 A GB 24998/55A GB 2499855 A GB2499855 A GB 2499855A GB 771292 A GB771292 A GB 771292A
Authority
GB
United Kingdom
Prior art keywords
brush
apertures
pin
commutator
bolt
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
GB24998/55A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB771292A publication Critical patent/GB771292A/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
    • H01R39/38—Brush holders

Landscapes

  • Motor Or Generator Current Collectors (AREA)

Abstract

771,292. Brush-gear for dynamo-electric machines. GENERAL ELECTRIC CO. Aug. 31, 1955 [Sept. 3, 1954], No. 24998/55. Class 35. A brush-holder 1 is attached by studs 3 to an insulated support member 2 which is in turn mounted on the frame 12 of a dynamo-electric machine. When the commutator diameter has been reduced by wear or by machining, the brush-holder can be adjusted towards the commutator by removing bolts 9, 10, aligning apertures 4, 4a and 6, 6a and reinserting the bolts in newly aligned apertures 5, 5a, and 7, 7a, the spacing between the apertures in the support (in the direction of brush adjustment) being less than the spacing in the frame by an amount smaller than the diameter of a larger aperture. The apertures 4, 5 have a close fit on the bolt 9 whilst the apertures 6, 7 are looser on the bolt 10 to allow for manufacturing tolerances, the close-fit apertures being arranged as close to the brush holder and to the commutator as possible. A coil spring 21 for biasing the brush into engagement with the commutator is mounted on a pin 20 carried by the support 2, the pin having a square crosssection and being received in a circular hole 22 for providing a firm and accurate location of the pin. To increase the rigidity, the pin has an internally threaded transverse hole into which a bolt or screw 19, accommodated in the support member 2, is screwed so that the upper corners of the pin are pressed firmly against the inside surface of the hole. The brushholder may be formed by extrusion, a slot 26 being added to accommodate the spring 21 when the brush has worn.
GB24998/55A 1954-09-03 1955-08-31 Improvements in or relating to brush holder assemblies for electrical equipment Expired GB771292A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US771292XA 1954-09-03 1954-09-03

Publications (1)

Publication Number Publication Date
GB771292A true GB771292A (en) 1957-03-27

Family

ID=22136238

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24998/55A Expired GB771292A (en) 1954-09-03 1955-08-31 Improvements in or relating to brush holder assemblies for electrical equipment

Country Status (1)

Country Link
GB (1) GB771292A (en)

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