GB513502A - Improvements in electro-magnetic indicators - Google Patents

Improvements in electro-magnetic indicators

Info

Publication number
GB513502A
GB513502A GB11136/38A GB1113638A GB513502A GB 513502 A GB513502 A GB 513502A GB 11136/38 A GB11136/38 A GB 11136/38A GB 1113638 A GB1113638 A GB 1113638A GB 513502 A GB513502 A GB 513502A
Authority
GB
United Kingdom
Prior art keywords
armature
pole
coil
april
electro
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
GB11136/38A
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
Publication of GB513502A publication Critical patent/GB513502A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
    • G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
    • G08B5/24—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission with indicator element moving about a pivot, e.g. hinged flap or rotating vane

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnets (AREA)

Abstract

513,502. Electromagnets. LIST, H. April 12, 1938, No. 11136. Convention date, April 12, 1937. [Class 35] [Also in Group XXXVIII] The armature 8 of a two-position indicator is arranged within the operating coil 5 and normally lies adjacent one pole 3 of a yoke member having a second pole 10 external to the coil. The armature and pole 10 are provided with overturned ends and the arrangement is such that when the coil 5 is energised, the armature is repelled by the pole 3 and attracted by the pole 10 to produce a more uniform force throughout the stroke of the armature. The armature is restored to its normal position by a spring 9 which is held in position by the end 8' of the armature which may be pivotally mounted as shown or supported on a knife-edge bearing on the yoke.
GB11136/38A 1937-04-12 1938-04-12 Improvements in electro-magnetic indicators Expired GB513502A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE513502X 1937-04-12

Publications (1)

Publication Number Publication Date
GB513502A true GB513502A (en) 1939-10-13

Family

ID=6548434

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11136/38A Expired GB513502A (en) 1937-04-12 1938-04-12 Improvements in electro-magnetic indicators

Country Status (1)

Country Link
GB (1) GB513502A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2444476A (en) * 1946-08-24 1948-07-06 Standard Telephones Cables Ltd Electric annunciator drop
US3178703A (en) * 1961-11-07 1965-04-13 Int Standard Electric Corp Electromagnetically actuated optical signalling device
US4040382A (en) * 1976-06-11 1977-08-09 Sheppard Howard H Indicator for relay or the like

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2444476A (en) * 1946-08-24 1948-07-06 Standard Telephones Cables Ltd Electric annunciator drop
US3178703A (en) * 1961-11-07 1965-04-13 Int Standard Electric Corp Electromagnetically actuated optical signalling device
US4040382A (en) * 1976-06-11 1977-08-09 Sheppard Howard H Indicator for relay or the like

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