GB655491A - Improvements relating to contact arrangements of electric circuit breakers - Google Patents

Improvements relating to contact arrangements of electric circuit breakers

Info

Publication number
GB655491A
GB655491A GB16448/48A GB1644848A GB655491A GB 655491 A GB655491 A GB 655491A GB 16448/48 A GB16448/48 A GB 16448/48A GB 1644848 A GB1644848 A GB 1644848A GB 655491 A GB655491 A GB 655491A
Authority
GB
United Kingdom
Prior art keywords
contact
housing
fingers
spherical
engaging
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
GB16448/48A
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.)
JOSEPH FREDERICK STRICKLAND SM
A Reyrolle and Co Ltd
Original Assignee
JOSEPH FREDERICK STRICKLAND SM
A Reyrolle 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
Application filed by JOSEPH FREDERICK STRICKLAND SM, A Reyrolle and Co Ltd filed Critical JOSEPH FREDERICK STRICKLAND SM
Priority to GB16448/48A priority Critical patent/GB655491A/en
Publication of GB655491A publication Critical patent/GB655491A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00Contacts
    • H01H1/12Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14Contacts characterised by the manner in which co-operating contacts engage by abutting

Abstract

655,491. Switch contacts. REYROLLE & CO., Ltd., A., ALLAN, A., and SMALL, J. F. S. June 18, 1948, No. 16448. [Class 38(v)] In a self-aligning butt contact arrangement for a circuitbreaker, either the fixed or the moving contact comprises a contact member mechanically connected to its supporting member through a part spherical surface on one member engaging a part cylindrical surface on the other member to permit tilting and bodily movement of the contact member against spring action. In Fig. 1, the fixed contact comprises a fixed part B, a supporting member C, an inner housing D slit longitudinally to provide contact fingers, and the part spherical tilting member A which engages the contact fingers and is biassed towards the moving contact E by a spring G and thrust cap F. The cap F has a part spherical surface F<SP>1</SP> engaging a bore A<SP>1</SP> in the member A: When the contacts are closed, the moving contact E may move the tilting contact member A a short distance vertically in the housing D and the member A may tilt within the housing so as to bring its lower surface into correct alignment with the contact E. The outward movement of the member A under the bias of the spring is limited by the inturned flange C<SP>1</SP> of the support C, though in modifications, the extent of this movement may be determined by a screw or screws on the member A engaging in a slot or slots in the housing D (Fig. 2, not shown), by ball headed studs extending through springs G into recesses in the member A (Fig. 4, not shown), by slotted links Q, Q<SP>1</SP> connected between the members A, B, Fig. 6, or by securing the spring G to both members A, B (Fig. 7, not shown). In all these modifications and as shown in Fig. 6 the arrangement may be such that as the contacts separate the member A is tilted, so that the separation always occurs between the same points on the contact surfaces. Both contact members A, E may be provided with erosionresisting inserts A<SP>5</SP>, E<SP>1</SP> at these points, slots A<SP>3</SP>, E<SP>2</SP> being provided to confine the arc to these inserts. In Fig. 4 (not shown). the housing D is formed by hairpin-shaped fingers so that the electrodynamic forces set up by the current in the fingers tend to maintain the fingers in firm contact with the contact member A. The contact member A may be formed with a slot in a lateral plane to cause the current in the contact to flow in a loop which tends to blow out the arc in a transverse direction. Fig. 5 shows a modified arrangement in which the fixed member B is provided with a part spherical surface B<SP>1</SP> and the tilting contact member is formed by a cup N with an inner housing N<SP>1</SP> having fingers engaging the surface B'. A chain P limits the movement of the cup N.
GB16448/48A 1948-06-18 1948-06-18 Improvements relating to contact arrangements of electric circuit breakers Expired GB655491A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB16448/48A GB655491A (en) 1948-06-18 1948-06-18 Improvements relating to contact arrangements of electric circuit breakers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB16448/48A GB655491A (en) 1948-06-18 1948-06-18 Improvements relating to contact arrangements of electric circuit breakers

Publications (1)

Publication Number Publication Date
GB655491A true GB655491A (en) 1951-07-25

Family

ID=10077497

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16448/48A Expired GB655491A (en) 1948-06-18 1948-06-18 Improvements relating to contact arrangements of electric circuit breakers

Country Status (1)

Country Link
GB (1) GB655491A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE901074C (en) * 1951-10-18 1954-01-07 Licentia Gmbh Press contact for periodically operated devices Contact
US3042778A (en) * 1959-04-15 1962-07-03 Albert E Anderson Electrical contacting device
EP0435408A2 (en) * 1989-11-17 1991-07-03 FABEG GmbH Resilient pressure contacts
EP1253674A2 (en) * 2001-04-27 2002-10-30 Yokowo Co., Ltd. Spring connector

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE901074C (en) * 1951-10-18 1954-01-07 Licentia Gmbh Press contact for periodically operated devices Contact
US3042778A (en) * 1959-04-15 1962-07-03 Albert E Anderson Electrical contacting device
EP0435408A2 (en) * 1989-11-17 1991-07-03 FABEG GmbH Resilient pressure contacts
EP0435408A3 (en) * 1989-11-17 1992-01-02 Fabeg Gmbh Resilient pressure contacts
EP1253674A2 (en) * 2001-04-27 2002-10-30 Yokowo Co., Ltd. Spring connector
EP1253674A3 (en) * 2001-04-27 2004-03-24 Yokowo Co., Ltd. Spring connector
CN1293678C (en) * 2001-04-27 2007-01-03 株式会社友华 Spring connector

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