US2032241A - Contacts for electric circuit breakers, switches, connecters and the like - Google Patents

Contacts for electric circuit breakers, switches, connecters and the like Download PDF

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Publication number
US2032241A
US2032241A US703108A US70310833A US2032241A US 2032241 A US2032241 A US 2032241A US 703108 A US703108 A US 703108A US 70310833 A US70310833 A US 70310833A US 2032241 A US2032241 A US 2032241A
Authority
US
United States
Prior art keywords
contact
contacts
housing
lamin
switches
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
US703108A
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English (en)
Inventor
Whitehead George Ethelbert
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US2032241A publication Critical patent/US2032241A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/38—Plug-and-socket contacts
    • H01H1/385—Contact arrangements for high voltage gas blast circuit breakers

Definitions

  • This invention relates to plug and socket type contacts of electrical circuit breakers, switches, connecters and the like and for its main object aims to provide an improved form of socket con- 5 tact and for another object, seeks to produce improved forms of the main and auxiliary contacts ⁇ claimed in my earlier application Serial No. 632,073. f
  • Fig. l is a sectional elevation of the socket contact in accordance with the invention and; Fig, 2 is an enenlarged plan View of part of the socket contact shown in Fig. 1, whilst Fig. 3 is asectional elevation of the contacts of the circuit breaker as claimed in my earlier application Serial No. 632,073 aforesaid, with the present invention applied to both the main current carrying contact members.
  • a socket contact member has its female contact surface formed by the inner edges of a plurality of circularly stacked lamin retained in a carrier in such manner that said surface is resiliently expansible.
  • said contact comprises a large number of similar bent strips, preferably of copper, stacked so that at their outer ends .,O they bear against an outer ring or housing so as to be self-retaining in the radial direction, means being provided to retain the strips against longitudinal displacement only.
  • each two adjacent lamina may have between them a phos- 35 phor bronze or steel backing spring bent to the same shape but preferably of slightly less length than the copper strips.
  • the main current carrying contacts of 40 switches or circuit breakers as claimed in the aforesaid application are constituted respectively by an enlarged portion of the plug contact and by an annularly laminated contact as hereinbefore set forth, housed in an enlarged down- 45 wardly extended mouth ring of the arcing chamber or housing of the arcing contacts.
  • the enlarged portion of the plug contact has longitudinal bores to permit oil or other fluid to flow freely at all times into the arcing chamber 50 or housing.
  • the main current carrying contacts are arranged to separate before the arcing contacts separate.
  • the socket contact comprises the ring or housing 55
  • the housing is provided with an inner shoulder
  • the end of the plug contact is indicated at
  • 05 may be separated from the next by a phosphor bronze or even steel lamina
  • Fig. 3 the latter is similar to Fig. 2 of my aforesaid earlier application.
  • has a downwardly extend- 20 ing mouth ring portion
  • the arcing plug 5 may be screwed into a bore I0 in the enlarged plug portion
  • Fig. 3 the moving Contact member is shown in the closed position in full lines whilst in dotted lines it is shown in the position which it occupies at the instant of commencement of arcing and it will be seen that at this instant there is a relatively large annular opening through which oil can flow around the plug member
  • An electrical socket contact member comprising an annular housing and held therein an annulus of closely packed thin flexible lamin each of which is engageable with the one on each side of it along a plurality of longitudinal lines of contact of which at least one line is adjacent the inner edge of the lamina thereby providing a substantially solid Wall adjacent to said inner edge and forming a socket member with an effectively continuous resiliently expansible laminated brush form of female contact surface.
  • An electrical socket contact member comprising an annular housing and held therein an annulus of closely packed thin flexible lamin each of which is engageable with the one on each side of it along a pluralityrof longitudinal lines of contact of which at least one line is adjacent the inner edge of the lamina thereby providing a substantially solid Wall adjacent to said inner edge and forming a socket member with an effectively continuous resiliently expansible laminated brush form of female contact surface, alternate lamina: being of stiier material and of only slightly shorter radial length than the other lamin.
  • An electrical socket contact member comprising an annular housing and held therein an annulus of closely packed thin iiexible lamin each of which is engageable with the one on each side of it along a plurality of longitudinal lines of contact of which at least one line is adjacent the inner edge of the lamina thereby providing a substantially solid wall adjacent to said inner edge and forming a socket member with an eiectively continuous resiliently expansible laminated brush form of female contact surface, all said lamin having a similar general curvature as distinct from angularity.
  • An electrical socket contact member comprising an annular housing and held therein an annulus of closely packed thin exible lamin each of which is engageable With the one on each side of it along a plurality of longitudinal lines of contact of which at least one line is adjacent the inner edge of the lamina thereby providing a substantially solid Wall adjacent to said inner edge and forming a socket member
  • all said lamina Yhaving a similar general curvature as distinct from angularity and alternate laminas being of stiier material and of only slightly shorter radial in the opposite direction at the ends, each of which lamin is engageable with the one on each side of it along a plurality of longitudinal lines of contact of which at least one line is adjacent the inner edge of the lamina thereby providing a sub- V-stantially solid Wall adjacent to said inner edge and forming a socket member With an effectively continuous resiliently expansible laminated brush form of female contact surface.
  • An electrical circuit breaker having a tubular metal housing, a pair of relatively longitudinally movable cooperating contacts of Which one is of elongated plug form whilst the other contact is located in said tubular metal housing with its contact surface disposed between the ends of said housing and protruding inwardly from the inner Wall surface thereof, a mouth ring forming part of said housing and through which said elongated plug contact enters to engage only said contact within said housing, said housing comparatively closely surrounding the engaging contact and being provided with an opening for the free escape of the arc gases, an enlarged extension of said mouth ring, an enlargement on said plug contact, and an annulus of closely packed thin flexible lamin held in the mouth ring each of which lamn is engageable With the one on each side of it along a plurality of longitudinal lines of contact of which at least one line is adjacent the inner edge of the lamin thereby providing a substantially solid Wall adjacent to said inner edge and forming a socket member with an effectively continuous resiliently expansible laminated brush form of female contact surface which is adapted to

Landscapes

  • Breakers (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
US703108A 1933-01-06 1933-12-19 Contacts for electric circuit breakers, switches, connecters and the like Expired - Lifetime US2032241A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB541/33A GB409085A (en) 1933-01-06 1933-01-06 Improvements in contacts for electric circuit breakers, switches, connectors and the like

Publications (1)

Publication Number Publication Date
US2032241A true US2032241A (en) 1936-02-25

Family

ID=9706164

Family Applications (1)

Application Number Title Priority Date Filing Date
US703108A Expired - Lifetime US2032241A (en) 1933-01-06 1933-12-19 Contacts for electric circuit breakers, switches, connecters and the like

Country Status (5)

Country Link
US (1) US2032241A (enrdf_load_stackoverflow)
BE (1) BE400373A (enrdf_load_stackoverflow)
DE (1) DE680209C (enrdf_load_stackoverflow)
FR (1) FR765491A (enrdf_load_stackoverflow)
GB (1) GB409085A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3214549A (en) * 1962-05-02 1965-10-26 Westinghouse Electric Corp Fluid-blast piston arrangement and contact structure for circuit interrupters

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE886616C (de) * 1943-08-21 1953-08-17 Lorenz C Ag Elektrischer Kontakt

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3214549A (en) * 1962-05-02 1965-10-26 Westinghouse Electric Corp Fluid-blast piston arrangement and contact structure for circuit interrupters

Also Published As

Publication number Publication date
DE680209C (de) 1939-08-25
BE400373A (enrdf_load_stackoverflow)
GB409085A (en) 1934-04-26
FR765491A (fr) 1934-06-11

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