GB142900A - Improvements relating to electric indicating, measuring and regulating apparatus - Google Patents
Improvements relating to electric indicating, measuring and regulating apparatusInfo
- Publication number
- GB142900A GB142900A GB95519A GB95519A GB142900A GB 142900 A GB142900 A GB 142900A GB 95519 A GB95519 A GB 95519A GB 95519 A GB95519 A GB 95519A GB 142900 A GB142900 A GB 142900A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gap
- pole
- magnet
- air gap
- disk
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R5/00—Instruments for converting a single current or a single voltage into a mechanical displacement
- G01R5/14—Moving-iron instruments
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
142,900. Todman, J. C. Jan. 14, 1919. Electric governors.-The rotary member of an electric regulating apparatus applicable to the engine governor described in Specification 137,898 moves in such a manner as to vary the gap between the poles of an electro-magnet under the influence of changes of current in the magnet winding. A spring-controlled disk 1 of magnetic material has a spiral periphery and, by its rotation, varies the air gap between a double pole 5 and a wound pole 3 of an electro-magnet. The periphery of the disk 1 may have a flange 2. The air gap may be varied by other means; for example, a disk of varying thickness may vary the area of the gap. In a modification, Fig. 4, one pole 9 of the magnet is annular and surrounds the other pole 10, which is of spiral or other form giving a variable air gap. A piece of magnetic material 11 moves from a wider to a narrower part of the gap as the current increases. The air gap may be arranged to vary less per degree of revolution to give a magnified scale throughout any given range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB95519A GB142900A (en) | 1919-01-14 | 1919-01-14 | Improvements relating to electric indicating, measuring and regulating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB95519A GB142900A (en) | 1919-01-14 | 1919-01-14 | Improvements relating to electric indicating, measuring and regulating apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB142900A true GB142900A (en) | 1920-05-14 |
Family
ID=9713432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB95519A Expired GB142900A (en) | 1919-01-14 | 1919-01-14 | Improvements relating to electric indicating, measuring and regulating apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB142900A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3585501A (en) * | 1967-02-16 | 1971-06-15 | Tokyo Shibaura Electric Co | Indicating instruments provided with a movable iron strip member |
-
1919
- 1919-01-14 GB GB95519A patent/GB142900A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3585501A (en) * | 1967-02-16 | 1971-06-15 | Tokyo Shibaura Electric Co | Indicating instruments provided with a movable iron strip member |
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