GB757422A - Improvements in or relating to speed-responsive electric switches - Google Patents

Improvements in or relating to speed-responsive electric switches

Info

Publication number
GB757422A
GB757422A GB898554A GB898554A GB757422A GB 757422 A GB757422 A GB 757422A GB 898554 A GB898554 A GB 898554A GB 898554 A GB898554 A GB 898554A GB 757422 A GB757422 A GB 757422A
Authority
GB
United Kingdom
Prior art keywords
contact
shaft
disc
speed
casing
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
GB898554A
Inventor
Percy Edwin Towndrow
Edward George Barrett
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.)
S Smith and Sons Ltd
S Smith and Sons England Ltd
Original Assignee
S Smith and Sons Ltd
S Smith and Sons England 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 S Smith and Sons Ltd, S Smith and Sons England Ltd filed Critical S Smith and Sons Ltd
Priority to GB898554A priority Critical patent/GB757422A/en
Priority to FR1122772D priority patent/FR1122772A/en
Publication of GB757422A publication Critical patent/GB757422A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/06—Switches operated by change of speed
    • H01H35/10—Centrifugal switches

Landscapes

  • Adjustable Resistors (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

757,422. Centrifugal switches; magnetic switches. SMITH & SONS (ENGLAND), Ltd., S. April 1, 1955 [March 26, 1954], No. 8985/54. Class 38(5) In a speed-responsive switch a ferromagnetic body 9.is pivotably mounted at 8 on a rotating shaft 3 so that when stationary one end of the body comes under the influence of a permanent magnet 11 carried by the shaft and an adjustable contact 14 at the other end engages a co-operating contact 18. As the speed increases centrifugal forces overcome the magnetic attraction and the body is displaced to the position shown by the broken lines thereby opening the contacts. This displacement is limited by the adjustable stop 12. The body carries a secondary contact 15 which co-operates with a contact 19 connected to the contact 18 by a spring blade. The contact 18 is mounted on an insulating block 17 fixed to the shaft and current is introduced via a connection 20, a spring-urged brush 21 engaging a conducting disc 22 mounted on an insulated disc 23 in the casing, and a conductor 24 connected to the disc 22..The return is to earth through the shaft and bearing to the casing. The switch is particularly intended for use in motor vehicles.
GB898554A 1954-03-26 1954-03-26 Improvements in or relating to speed-responsive electric switches Expired GB757422A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB898554A GB757422A (en) 1954-03-26 1954-03-26 Improvements in or relating to speed-responsive electric switches
FR1122772D FR1122772A (en) 1954-03-26 1955-04-18 Speed sensitive electric switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB898554A GB757422A (en) 1954-03-26 1954-03-26 Improvements in or relating to speed-responsive electric switches

Publications (1)

Publication Number Publication Date
GB757422A true GB757422A (en) 1956-09-19

Family

ID=9863130

Family Applications (1)

Application Number Title Priority Date Filing Date
GB898554A Expired GB757422A (en) 1954-03-26 1954-03-26 Improvements in or relating to speed-responsive electric switches

Country Status (2)

Country Link
FR (1) FR1122772A (en)
GB (1) GB757422A (en)

Also Published As

Publication number Publication date
FR1122772A (en) 1956-09-12

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