GB787391A - Improvements in or relating to electro-mechanical transducers, particularly electro-magnetic relays - Google Patents

Improvements in or relating to electro-mechanical transducers, particularly electro-magnetic relays

Info

Publication number
GB787391A
GB787391A GB2884154A GB2884154A GB787391A GB 787391 A GB787391 A GB 787391A GB 2884154 A GB2884154 A GB 2884154A GB 2884154 A GB2884154 A GB 2884154A GB 787391 A GB787391 A GB 787391A
Authority
GB
United Kingdom
Prior art keywords
rod
winding
contacts
electro
magnetic
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
GB2884154A
Inventor
Norman George Worster
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.)
S Smith and Sons Ltd
S Smith and Sons England Ltd
Original Assignee
S Smith and Sons Ltd
S Smith and Sons England 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 S Smith and Sons Ltd, S Smith and Sons England Ltd filed Critical S Smith and Sons Ltd
Priority to GB2884154A priority Critical patent/GB787391A/en
Publication of GB787391A publication Critical patent/GB787391A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/36—Stationary parts of magnetic circuit, e.g. yoke
    • H01H50/42—Auxiliary magnetic circuits, e.g. for maintaining armature in, or returning armature to, position of rest, for damping or accelerating movement

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

787,391. Electromagnetic relays. SMITH & SONS (ENGLAND), Ltd., S. Oct. 10, 1955 [Oct. 6, 1954], No. 28841/54. Class 38 (5). A relay comprises a winding 11 on an aluminium former 6 mounted on a rod 7, the winding being positioned in an annular air gap 4 formed between an annular permanent magnet 1 and a magnetic plate 3 whereby on energization of the winding the winding assembly moves upwards and the upper end of the rod closes a pair of contacts 18, 19. A magnetic case 2 connects the parts 1, 3. The rod 7 is slidable in bearings 8 within the magnet 1 and the lower end normally abuts a set screw 10 adjustable to vary the relay operating current. The rod 7 carries a magnetic cross-bar 14 having its ends adjacent adjustable polepieces 15 mounted on the plate 3 whereby leakage flux produces a restraint on the initial movement of the rod until the bar moves out of alignment with the polepieces and the contacts 18, 19 then close with a snap action. A transparent cover 21 encloses the contacts. The relay is relatively insensitive to vibration owing to the clamping effect produced by eddy currents generated in the conducting former 6.
GB2884154A 1954-10-06 1954-10-06 Improvements in or relating to electro-mechanical transducers, particularly electro-magnetic relays Expired GB787391A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2884154A GB787391A (en) 1954-10-06 1954-10-06 Improvements in or relating to electro-mechanical transducers, particularly electro-magnetic relays

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2884154A GB787391A (en) 1954-10-06 1954-10-06 Improvements in or relating to electro-mechanical transducers, particularly electro-magnetic relays

Publications (1)

Publication Number Publication Date
GB787391A true GB787391A (en) 1957-12-04

Family

ID=10282019

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2884154A Expired GB787391A (en) 1954-10-06 1954-10-06 Improvements in or relating to electro-mechanical transducers, particularly electro-magnetic relays

Country Status (1)

Country Link
GB (1) GB787391A (en)

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