GB318857A - Improvements in or relating to the speed regulation of alternating current induction meters - Google Patents
Improvements in or relating to the speed regulation of alternating current induction metersInfo
- Publication number
- GB318857A GB318857A GB23355/29A GB2335529A GB318857A GB 318857 A GB318857 A GB 318857A GB 23355/29 A GB23355/29 A GB 23355/29A GB 2335529 A GB2335529 A GB 2335529A GB 318857 A GB318857 A GB 318857A
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnetic
- screw
- wall
- air gap
- airgap
- 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
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/36—Induction meters, e.g. Ferraris meters
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
318,857. Blathy, O. T. Sept. 10, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Induction motor meters.-An adjustable magnetic bridging- member is inserted in or adjacent to the air gap of the magnetic shunt of the voltage magnet so that the reluctance of the air gap can be varied. As shown the magnetic shunt f for the voltage magnet b surrounds the magnet in the form of a casing, so that an air gap is formed between the polepiece c and the casing f. A screw h, of magnetic material, is screwed into the wall e of the shunt casing f so that its disc-shaped head i extends into the air gap g between the pole-piece c and the wall e. By adjusting the screw h the magnetic reluctance of the gap g, and consequently the speed of the meter for a given load, may be varied. In a modification, the head i is omitted and the free end of a spring finger extends into the airgap g and is adjusted by the screw h. In another form, a non-circular disc is rotatably adjustable on a pin secured to the wall e, so that a greater or. smaller part extends into the airgap. In another construction a magnetic member is rotatably adjustable about a screw on the front of the pole shoe c, and has a portion bent over at right angles forming a pole face which can be moved nearer to or further from the wall e. In a modification for a two-limbed voltage magnet having horns with an airgap between them forming the magnetic shunt, a brass screw with an iron head is screwed between the ends of the horns.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
HU318857X | 1928-09-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB318857A true GB318857A (en) | 1930-02-06 |
Family
ID=10978764
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB23355/29A Expired GB318857A (en) | 1928-09-10 | 1929-07-30 | Improvements in or relating to the speed regulation of alternating current induction meters |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB318857A (en) |
-
1929
- 1929-07-30 GB GB23355/29A patent/GB318857A/en not_active Expired
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