GB517110A - Improvements relating to rotary contact devices for use in electricity meters, or electrically operated measuring, indicating, recording or other like instruments - Google Patents
Improvements relating to rotary contact devices for use in electricity meters, or electrically operated measuring, indicating, recording or other like instrumentsInfo
- Publication number
- GB517110A GB517110A GB2654638A GB2654638A GB517110A GB 517110 A GB517110 A GB 517110A GB 2654638 A GB2654638 A GB 2654638A GB 2654638 A GB2654638 A GB 2654638A GB 517110 A GB517110 A GB 517110A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contacts
- bar
- engagement
- contact
- indicating
- 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
- G01R11/02—Constructional details
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Leads Or Probes (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
517,110. Partly electromagnetic switches. CHAMBERLAIN & HOOKHAM, Ltd., JAMES, S., and BRAINES, W. F. Sept. 12, 1938, No. 26546. [Class 38 (v)] In an electricity meter or other indicating or recording instrument wherein the meter mechanism drives a rotary member a so as to bring one' or more contacts c into engagement with stationary contacts o, in order to avoid the lack of accuracy of the instrument produced by the resistance to rotation of the body a owing to the frictional resistance due to the engagement of the contacts, the contacts are adapted to close an additional circuit to an electromagnet n which then attracts an iron bar e fixed to the rotary drum a. There is lost motion between the bar e pivoted at d and the arms h of the driving mechanism of the instrument so that when the magnet n is energized the bar e leaves the driving arm h and rotates till the contacts c, o become disengaged and the magnet circuit is interrupted. The meter mechanism continues to rotate till an arm h again reaches the bar e and drives it round till the next contact c engages a fixed contact. The drum a instead of carrying a contact c may have a projection which presses a contact spring into engagement with another contact spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2654638A GB517110A (en) | 1938-09-12 | 1938-09-12 | Improvements relating to rotary contact devices for use in electricity meters, or electrically operated measuring, indicating, recording or other like instruments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2654638A GB517110A (en) | 1938-09-12 | 1938-09-12 | Improvements relating to rotary contact devices for use in electricity meters, or electrically operated measuring, indicating, recording or other like instruments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB517110A true GB517110A (en) | 1940-01-19 |
Family
ID=10245328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2654638A Expired GB517110A (en) | 1938-09-12 | 1938-09-12 | Improvements relating to rotary contact devices for use in electricity meters, or electrically operated measuring, indicating, recording or other like instruments |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB517110A (en) |
-
1938
- 1938-09-12 GB GB2654638A patent/GB517110A/en not_active Expired
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