GB471538A - Improvements in or relating to contact tips for electric switches - Google Patents

Improvements in or relating to contact tips for electric switches

Info

Publication number
GB471538A
GB471538A GB668136A GB668136A GB471538A GB 471538 A GB471538 A GB 471538A GB 668136 A GB668136 A GB 668136A GB 668136 A GB668136 A GB 668136A GB 471538 A GB471538 A GB 471538A
Authority
GB
United Kingdom
Prior art keywords
laminations
conductor metal
metal
contact
relating
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
GB668136A
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.)
Allen West and Co Ltd
Original Assignee
Allen West and 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
Priority to BE420170D priority Critical patent/BE420170A/xx
Application filed by Allen West and Co Ltd filed Critical Allen West and Co Ltd
Priority to GB668136A priority patent/GB471538A/en
Priority to FR818192D priority patent/FR818192A/en
Publication of GB471538A publication Critical patent/GB471538A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/021—Composite material

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Manufacture Of Switches (AREA)
  • Contacts (AREA)

Abstract

471,538. Switch contacts. WEST & CO., Ltd., A., and BABLER, E. March 5, 1936, No. 6681. [Class 38 (v)] [Also in Group XXII] A switch contact comprises a body of a good conducting material such as silver or copper which is reinforced by thin laminations of a metal of higher melting point such as tungsten and similar metals, or nickel, iron or their alloys or of graphite silicon refractory materials. The laminations are placed parallel to the direction of the current and so do not greatly increase the contact resistance. The laminations may be preformed into a grid and immersed in the molten conductor metal, or sintered with the powdered conductor metal. Alternatively slots may be cut in the conductor metal and the laminations inserted and soldered in position. Or the contact may be made by winding a double spiral of ribbons of the two metals which are then compressed.
GB668136A 1936-03-05 1936-03-05 Improvements in or relating to contact tips for electric switches Expired GB471538A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE420170D BE420170A (en) 1936-03-05
GB668136A GB471538A (en) 1936-03-05 1936-03-05 Improvements in or relating to contact tips for electric switches
FR818192D FR818192A (en) 1936-03-05 1937-02-22 Improvements to the contact pads of electrical switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB668136A GB471538A (en) 1936-03-05 1936-03-05 Improvements in or relating to contact tips for electric switches

Publications (1)

Publication Number Publication Date
GB471538A true GB471538A (en) 1937-09-06

Family

ID=9818850

Family Applications (1)

Application Number Title Priority Date Filing Date
GB668136A Expired GB471538A (en) 1936-03-05 1936-03-05 Improvements in or relating to contact tips for electric switches

Country Status (3)

Country Link
BE (1) BE420170A (en)
FR (1) FR818192A (en)
GB (1) GB471538A (en)

Also Published As

Publication number Publication date
FR818192A (en) 1937-09-20
BE420170A (en)

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