US1774446A - Device for interrupting electric currents - Google Patents

Device for interrupting electric currents Download PDF

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Publication number
US1774446A
US1774446A US124554A US12455426A US1774446A US 1774446 A US1774446 A US 1774446A US 124554 A US124554 A US 124554A US 12455426 A US12455426 A US 12455426A US 1774446 A US1774446 A US 1774446A
Authority
US
United States
Prior art keywords
contacts
interrupter
electric currents
interrupting electric
interrupting
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 - Lifetime
Application number
US124554A
Inventor
Maartens Joannes Hend Josephus
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of US1774446A publication Critical patent/US1774446A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
    • H01R33/945—Holders with built-in electrical component
    • H01R33/95—Holders with built-in electrical component with fuse; with thermal switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/04—Co-operating contacts of different material

Definitions

  • This invention relates to a device for interrupting an electric current and more particularly to a device for igniting and extinguishing at regular intervals the light of an 5 electric lamp provided with a thermal interrupter.
  • the invention is based on the fact that sometimes the interrupter contacts are heated to such an extent that they become welded 1 together so that the working of the interrupter entirely ceases. This occurs in particular in the case of interrupters which serve to ignite and extinguish the light of an electric lamp at regular intervals. With such 15 a device the switching-on current is many times greater than the current required, for
  • the chrome-iron may contain admixtures of Mn, Ni, Co, C and 'Si without prejudicially influencing the working of the interrupter.
  • a device for interrupting an electric current comprising a thermal interrupter and contacts being provided on said interrupter, one of said contacts consisting of nickel,

Landscapes

  • Contacts (AREA)
  • Cyclones (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Manufacture Of Switches (AREA)

Description

I Patented Au as, lea
UNITED srATas' PATENT OFFICE J'CtAlINES HENDRIGUS JOSEPHU S MAARTENS, O EINDHOVEH, NETHERLANDS, Afi- SIGNOE TO N. V. PHILIPS GLOEIL AMPENFABRIEKEN, 01 EINDHOVEN DEVICE FOR INTERRUPTING ELECTRIC CURRENTS Kc Drawing. Application filed July 23, 1926, Serial No. 124,554, and in the Netherlands October 7 1925.
This invention relates to a device for interrupting an electric current and more particularly to a device for igniting and extinguishing at regular intervals the light of an 5 electric lamp provided with a thermal interrupter.
The invention is based on the fact that sometimes the interrupter contacts are heated to such an extent that they become welded 1 together so that the working of the interrupter entirely ceases. This occurs in particular in the case of interrupters which serve to ignite and extinguish the light of an electric lamp at regular intervals. With such 15 a device the switching-on current is many times greater than the current required, for
' example, to heat tungsten filaments to a sufiicient incandescence,'such being aresult of the smaller resistance in the cold than in the warm state. The heavy switching-on current causes the interrupter contacts to become heated to a high temperature so that there is a risk of the said contacts welding together. v Now it has been found that when using special materials for the manufacture of the contacts of the interrupter, the said disadvantage can be obviated.- If the contacts consist on one side of nickel and on the other side of chrome-ironconsisting for example of 39 15-35% Cr. and 85-65% Fe., the welding together of the contacts does not occur. These materials are therefore very suitable for use in the manufacture of interrupter contacts which run the risk of welding together; al-' though by what means these contacts function is not to the purpose. The chrome-iron may contain admixtures of Mn, Ni, Co, C and 'Si without prejudicially influencing the working of the interrupter.
What I claim is A device for interrupting an electric current comprising a thermal interrupter and contacts being provided on said interrupter, one of said contacts consisting of nickel,
JOANRBS ammucus JOSEPHUS IIAARTENS.
whereas the other is made of chrome-iron.
US124554A 1925-10-07 1926-07-23 Device for interrupting electric currents Expired - Lifetime US1774446A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL1774446X 1925-10-07

Publications (1)

Publication Number Publication Date
US1774446A true US1774446A (en) 1930-08-26

Family

ID=19873078

Family Applications (1)

Application Number Title Priority Date Filing Date
US124554A Expired - Lifetime US1774446A (en) 1925-10-07 1926-07-23 Device for interrupting electric currents

Country Status (5)

Country Link
US (1) US1774446A (en)
DE (1) DE539079C (en)
FR (1) FR619557A (en)
GB (1) GB264954A (en)
NL (1) NL17519C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2426659A (en) * 1941-03-17 1947-09-02 Wulff John Producing electrical contact material
US4934968A (en) * 1986-12-22 1990-06-19 Amp Incorporated Nickel plated contact surface having preferred crystallographic orientation

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE536959A (en) * 1954-03-31
EP0935266B1 (en) * 1998-02-07 2003-01-02 Niles Parts Co., Ltd. Sliding switch contact structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2426659A (en) * 1941-03-17 1947-09-02 Wulff John Producing electrical contact material
US4934968A (en) * 1986-12-22 1990-06-19 Amp Incorporated Nickel plated contact surface having preferred crystallographic orientation

Also Published As

Publication number Publication date
FR619557A (en) 1927-04-05
DE539079C (en) 1931-11-20
NL17519C (en)
GB264954A (en) 1927-02-03

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