GB663569A - Improvements in and relating to clamping devices for magnetic cores - Google Patents
Improvements in and relating to clamping devices for magnetic coresInfo
- Publication number
- GB663569A GB663569A GB31369/48A GB3136948A GB663569A GB 663569 A GB663569 A GB 663569A GB 31369/48 A GB31369/48 A GB 31369/48A GB 3136948 A GB3136948 A GB 3136948A GB 663569 A GB663569 A GB 663569A
- Authority
- GB
- United Kingdom
- Prior art keywords
- core
- laminations
- legs
- clamps
- dec
- 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
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/263—Fastening parts of the core together
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
663,569. Transformers and inductances. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 3, 1948 [Dec. 4, 1947], No. 31369/48. Class 38 (ii). Relates to a laminated magnetic core having a clamp for holding the laminations tightly together comprising a one-piece metal member which is shrunk around the core. As shown, a fluorescent lamp ballast is constructed from stacked laminations of ferro-magnetic material and comprises outer core legs 3, 4, and a centre core leg 5 which carries coils 6, 7, 8. The laminations and core-sections are held together by cast metal clamps 9, 10. The method of assembly consists in first stacking the laminations of the centre core, mounting the coils, and inserting a wedge 12. The outer core legs are stacked and aligned, the three legs being placed temporarily in adjustable clamps 14, 16. A split mould 18, 19 is filled with molten type metal or other similar non-magnetic material having a relatively low melting-point and which contracts as it cools and hardens. Grooves 11 provide for locking-keys formed as integral parts of the clamps.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US663569XA | 1947-12-04 | 1947-12-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB663569A true GB663569A (en) | 1951-12-27 |
Family
ID=22068977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB31369/48A Expired GB663569A (en) | 1947-12-04 | 1948-12-03 | Improvements in and relating to clamping devices for magnetic cores |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB663569A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0061225A1 (en) * | 1981-03-25 | 1982-09-29 | Koninklijke Philips Electronics N.V. | Stabilization ballast for operating a gas and/or vapour discharge lamp |
| US4673907A (en) * | 1985-12-19 | 1987-06-16 | General Electric Company | Transformer with amorphous alloy core having chip containment means |
| WO1987004001A1 (en) * | 1985-12-19 | 1987-07-02 | General Electric Company | Transformer with amorphous alloy core having chip containment means |
-
1948
- 1948-12-03 GB GB31369/48A patent/GB663569A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0061225A1 (en) * | 1981-03-25 | 1982-09-29 | Koninklijke Philips Electronics N.V. | Stabilization ballast for operating a gas and/or vapour discharge lamp |
| US4673907A (en) * | 1985-12-19 | 1987-06-16 | General Electric Company | Transformer with amorphous alloy core having chip containment means |
| WO1987004001A1 (en) * | 1985-12-19 | 1987-07-02 | General Electric Company | Transformer with amorphous alloy core having chip containment means |
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