GB718043A - Cases for electrical instruments or relays - Google Patents

Cases for electrical instruments or relays

Info

Publication number
GB718043A
GB718043A GB275552A GB275552A GB718043A GB 718043 A GB718043 A GB 718043A GB 275552 A GB275552 A GB 275552A GB 275552 A GB275552 A GB 275552A GB 718043 A GB718043 A GB 718043A
Authority
GB
United Kingdom
Prior art keywords
cradle
relay
switch
strips
cases
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
GB275552A
Inventor
Albert Russell Van C Warringto
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.)
English Electric Co Ltd
Original Assignee
English Electric 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 English Electric Co Ltd filed Critical English Electric Co Ltd
Priority to GB275552A priority Critical patent/GB718043A/en
Publication of GB718043A publication Critical patent/GB718043A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Relay Circuits (AREA)

Abstract

718,043. Switch cases. ENGLISH ELECTRIC CO., Ltd. Jan. 30 1953 [Feb 1, 1952], No. 2755/52. Class 38(5) [Also in Group XXXVI] A case for electrical apparatus, e.g. a protective relay, comprises an outer container formed of a U-shaped metal part 1 closed at the top and bottom by insulating blocks 2, 3, and having a flange 4 at its front to which a cover (not shown) is fixed. A cradle for supporting the relay comprises front and rear inverted U-shaped frames 13 connected near the top and bottom by strips 14, 15, which engage ribs 16, 17 formed on the blocks 2, 3 when the cradle is slid into the container. When the cradle is in position a series of contact strips 20 thereon engages a corresponding series of strips 9 on the block 3 to complete a number of circuits to the relay (see Group XXXVI). In order to automatically open the circuit controlled by the relay when the cradle is removed a switch 34 is mounted on the cradle and has an operating arm 35 engaged by a projection 36 on a member 37 slidable on screws 19 on the cradle and biased forwardly by a spring 38, whereby when the front cover is removed the spring moves the member 37 to permit the switch to open.
GB275552A 1952-02-01 1952-02-01 Cases for electrical instruments or relays Expired GB718043A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB275552A GB718043A (en) 1952-02-01 1952-02-01 Cases for electrical instruments or relays

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB275552A GB718043A (en) 1952-02-01 1952-02-01 Cases for electrical instruments or relays

Publications (1)

Publication Number Publication Date
GB718043A true GB718043A (en) 1954-11-10

Family

ID=9745287

Family Applications (1)

Application Number Title Priority Date Filing Date
GB275552A Expired GB718043A (en) 1952-02-01 1952-02-01 Cases for electrical instruments or relays

Country Status (1)

Country Link
GB (1) GB718043A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2062734A5 (en) * 1969-10-01 1971-06-25 Asea Ab

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2062734A5 (en) * 1969-10-01 1971-06-25 Asea Ab

Similar Documents

Publication Publication Date Title
GB1464944A (en) Electrical circuit breaker switch-board apparatus
CA644398A (en) Operating mechanism for enclosed circuit breakers or switches
GB718043A (en) Cases for electrical instruments or relays
GB686453A (en) Improvements relating to housings for electrical components
GB836572A (en) Improvements in electromagnetic switches
GB779272A (en) Improvements in or relating to impulse operated electric switching means
GB704921A (en) A stand for heating an electric hand iron
GB739758A (en) Improvements in draw-out type electric switchgear
GB832789A (en) Electric fuse receptacle
GB490465A (en) Improvements in or connected with electric switches, operated by breaking a cover
GB1031969A (en) Load-break disconnecting switch
GB844853A (en) Improvements relating to protective relays for oil-filled apparatus
GB768726A (en) Electric lighting fittings
CA526220A (en) Operating mechanism for electric circuit breakers
CA526219A (en) Transitory latching switch mechanism
GB869446A (en) Improvements in or relating to electric switches
AU168121B2 (en) Circuit breaker with spring biased pivot for movable contact member
AU217221B2 (en) Trip mechanism for switch circuit breakers
GB800366A (en) Improvements relating to contact arrangements for electrical switchgear
CA549966A (en) Closing mechanism for an electric circuit breaker
CA517119A (en) Contact mechanism for automatic circuit breakers and similar electrical switchgear
GB707423A (en) Improvements in or relating to electric switchgear, motor starters, contactors and the like
ES201423A3 (en) Improvements in the construction of combined electrical fuses and switches. (Machine-translation by Google Translate, not legally binding)
GB692208A (en) Improvements in and relating to the neutral mechanism of electric circuit breakers
CA620340A (en) Motor spring operating mechanism for oil circuit breakers