GB308416A - Improvements in and relating to electric motors - Google Patents

Improvements in and relating to electric motors

Info

Publication number
GB308416A
GB308416A GB356028A GB356028A GB308416A GB 308416 A GB308416 A GB 308416A GB 356028 A GB356028 A GB 356028A GB 356028 A GB356028 A GB 356028A GB 308416 A GB308416 A GB 308416A
Authority
GB
United Kingdom
Prior art keywords
brushes
balls
spring
short
shaft
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
GB356028A
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.)
ALBERT GEORGE SALISBURY
ALLAN ADAIR POLLOCK
British Thomson Houston Co Ltd
Original Assignee
ALBERT GEORGE SALISBURY
ALLAN ADAIR POLLOCK
British Thomson Houston 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
Application filed by ALBERT GEORGE SALISBURY, ALLAN ADAIR POLLOCK, British Thomson Houston Co Ltd filed Critical ALBERT GEORGE SALISBURY
Priority to GB356028A priority Critical patent/GB308416A/en
Publication of GB308416A publication Critical patent/GB308416A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
    • H02P1/02—Details of starting control
    • H02P1/04—Means for controlling progress of starting sequence in dependence upon time or upon current, speed, or other motor parameter
    • H02P1/12—Switching devices centrifugally operated by the motor

Landscapes

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

Abstract

308,416. British Thomson-Houston Co., Ltd., Pollock, A. A., Hutt, J., and Salisbury, A. G. Feb. 4, 1928. Alternating-current commutator machines.-A shortcircuiting and brush-lifting device comprises a metallic plate centrifugally operated so as to move into contact with the commutator segments, further movement of the centrifugal member causing the brushes to be lifted. In the form shown, the centrifugal device consists of balls 5 between conical members 1, 2, the former being secured to the shaft 3 and having grooves for the balls 5, while the latter can move laterally along the shaft 3 against the action of a spring 4. At a predetermined speed the member 2 causes a flexible dished disc 6 to short-circuit the commutation segments 7. The member 2 has a cylindrical flange 8, the further movement of which, after the short-circuiting, allows a pivoted plate 9, actuated by a spring 10, to raise the brushes by means of two bell-crank levers 11.
GB356028A 1928-02-04 1928-02-04 Improvements in and relating to electric motors Expired GB308416A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB356028A GB308416A (en) 1928-02-04 1928-02-04 Improvements in and relating to electric motors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB356028A GB308416A (en) 1928-02-04 1928-02-04 Improvements in and relating to electric motors

Publications (1)

Publication Number Publication Date
GB308416A true GB308416A (en) 1929-03-28

Family

ID=9760640

Family Applications (1)

Application Number Title Priority Date Filing Date
GB356028A Expired GB308416A (en) 1928-02-04 1928-02-04 Improvements in and relating to electric motors

Country Status (1)

Country Link
GB (1) GB308416A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1268266B (en) * 1964-12-03 1968-05-16 Bosch Gmbh Robert Temperature monitoring for a small electric machine with grinding brushes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1268266B (en) * 1964-12-03 1968-05-16 Bosch Gmbh Robert Temperature monitoring for a small electric machine with grinding brushes

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