GB351488A - Improvements in electromagnetic relays - Google Patents

Improvements in electromagnetic relays

Info

Publication number
GB351488A
GB351488A GB9640/30A GB964030A GB351488A GB 351488 A GB351488 A GB 351488A GB 9640/30 A GB9640/30 A GB 9640/30A GB 964030 A GB964030 A GB 964030A GB 351488 A GB351488 A GB 351488A
Authority
GB
United Kingdom
Prior art keywords
magnet
polepieces
polarizing
permanent
adjustable
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
GB9640/30A
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.)
Creed and Co Ltd
Original Assignee
Creed 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 Creed and Co Ltd filed Critical Creed and Co Ltd
Priority to GB9640/30A priority Critical patent/GB351488A/en
Priority to US518120A priority patent/US1944578A/en
Publication of GB351488A publication Critical patent/GB351488A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/22—Polarised relays
    • H01H51/2272—Polarised relays comprising rockable armature, rocking movement around central axis parallel to the main plane of the armature
    • H01H51/2281—Contacts rigidly combined with armature

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)

Abstract

351,488. Electric relays. CREED & CO., Ltd. and SALMON, R. D., Telegraph Works, Croydon. March 26, 1930, No. 9640. Addition to 302,259, [Class 38 (v), Electric switches &c.]. [Class 38 (v).] Contact-making relays. - In the form of relay described in the parent Specification in which the permanent polarizing magnet is held on the fixed polepieces by means of its own magnetic attraction, in order to vary the value of the polarizing field an adjustable screw is arranged to bear on the permanent magnet to tilt it on the polepieces. As shown in Figs. 1 and 2 the permanent polarizing magnet 1 is held on the polepieces 2, 3 by its own magnetic attraction. A screw 4 adjustable by a head 5 in the side of the relay casing 6 bears against the extended middle portion of the magnet 1 so introducing an adjustable wedge-shaped air gap between the magnet and polepieces and varying the value of the polarizing field.
GB9640/30A 1930-03-26 1930-03-26 Improvements in electromagnetic relays Expired GB351488A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB9640/30A GB351488A (en) 1930-03-26 1930-03-26 Improvements in electromagnetic relays
US518120A US1944578A (en) 1930-03-26 1931-02-25 Means for adjusting field strength in electromagnetic devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9640/30A GB351488A (en) 1930-03-26 1930-03-26 Improvements in electromagnetic relays

Publications (1)

Publication Number Publication Date
GB351488A true GB351488A (en) 1931-06-26

Family

ID=9875889

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9640/30A Expired GB351488A (en) 1930-03-26 1930-03-26 Improvements in electromagnetic relays

Country Status (2)

Country Link
US (1) US1944578A (en)
GB (1) GB351488A (en)

Also Published As

Publication number Publication date
US1944578A (en) 1934-01-23

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