GB149342A - Improvements in or relating to electro-magnets - Google Patents

Improvements in or relating to electro-magnets

Info

Publication number
GB149342A
GB149342A GB21855/20A GB2185520A GB149342A GB 149342 A GB149342 A GB 149342A GB 21855/20 A GB21855/20 A GB 21855/20A GB 2185520 A GB2185520 A GB 2185520A GB 149342 A GB149342 A GB 149342A
Authority
GB
United Kingdom
Prior art keywords
armature
temperature
electro
magnet
bend
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
GB21855/20A
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.)
L Bleriot SA Ets
Original Assignee
L Bleriot SA Ets
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 L Bleriot SA Ets filed Critical L Bleriot SA Ets
Publication of GB149342A publication Critical patent/GB149342A/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
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/34—Means for adjusting limits of movement; Mechanical means for adjusting returning force

Abstract

149,342. Soc. Anon. des Etablissements L. BlÚriot. July 31, 1919, [Convention date]. Electro-magnets. -The armature of an electro-magnet is made of a combination of metals, such as brass or iron, so chosen with regard to thermal expansion that with change of temperature the armature automatically changes the length of the air-gap and compensates the temperature variation of resistance in the magnet windings, thereby ensuring that the armature is moved by a predetermined voltage or so that any desired variation of the length of air-gap may be produced by given variations of the armature temperature. In the form shown, the T-shaped armature of a twopole magnet is made of soft iron b with a longitudinal strip c of feebly or non-magnetic material secured to it so that increase of temperature causes it to bend, as shown by dotted lines. Alternatively, the transverse members or both members of the T may be of compound metal so as to bend with change of temperature.
GB21855/20A 1919-07-31 1920-07-21 Improvements in or relating to electro-magnets Expired GB149342A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE149342X 1919-07-31

Publications (1)

Publication Number Publication Date
GB149342A true GB149342A (en) 1921-03-10

Family

ID=3863831

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21855/20A Expired GB149342A (en) 1919-07-31 1920-07-21 Improvements in or relating to electro-magnets

Country Status (2)

Country Link
FR (1) FR521589A (en)
GB (1) GB149342A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2695346A (en) * 1951-07-31 1954-11-23 Westinghouse Air Brake Co Electric relay

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2695346A (en) * 1951-07-31 1954-11-23 Westinghouse Air Brake Co Electric relay

Also Published As

Publication number Publication date
FR521589A (en) 1921-07-16

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