GB636689A - Improvements in and relating to electromagnets - Google Patents
Improvements in and relating to electromagnetsInfo
- Publication number
- GB636689A GB636689A GB15533/47A GB1553347A GB636689A GB 636689 A GB636689 A GB 636689A GB 15533/47 A GB15533/47 A GB 15533/47A GB 1553347 A GB1553347 A GB 1553347A GB 636689 A GB636689 A GB 636689A
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnetic
- shim
- arm
- shim arm
- core
- 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
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
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electromagnets (AREA)
Abstract
636,689. Electromagnets. BRITISH THOMSON-HOUSTON CO., Ltd. June 12, 1947, No. 15533. Convention date, June 13, 1946. [Class 35] [Also in Group XXXVII] An electromagnet with which is associated an armature, comprises a magnetic core member carrying a winding and having a shim arm pivoted between one of its ends and a magnetic pole member, which shim arm has part of a surface covered by a non-magnetic material, the uncovered part of the surface co-operating with a surface of the. core or pole members to an extent varied by rotating the shim arm. In a D.C. time delay relay of the kind described in Specification 591,480, [Group XXXVII], the rotation of the shim arm 14, part of a surface of which is covered by a brass or other non- magnetic layer 18, brings more or less of the uncovered part 19 into contact with the upper surface of a pole member 15. The reluctance of the magnetic circuit through U-shaped cover member 1, shim arm 14, pole member 13, and a centrally pivoted armature 5 carrying contact arms 21, 22, and therefore the time delay of the relay, is thereby varied. Energization of coil 16 causes rotation of armature 5 against a spring 8 until its ends abut against the left-hand end of core member 1 and the upper surface of pole member 13 respectively, so that contact is broken at 21, 23 and made at 22, 24. Core member 1 consists of an iron core encased in a copper sheath. Shim arm 14 may be chromiumplated all over. Specification 483,100 is also referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US636689XA | 1946-06-13 | 1946-06-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB636689A true GB636689A (en) | 1950-05-03 |
Family
ID=22050713
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB15533/47A Expired GB636689A (en) | 1946-06-13 | 1947-06-12 | Improvements in and relating to electromagnets |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB636689A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1125546B (en) * | 1954-01-25 | 1962-03-15 | Pierre Eugene Ugon | Micro-electromagnet |
-
1947
- 1947-06-12 GB GB15533/47A patent/GB636689A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1125546B (en) * | 1954-01-25 | 1962-03-15 | Pierre Eugene Ugon | Micro-electromagnet |
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