GB1223852A - Improvements in or relating to moving coil instruments - Google Patents
Improvements in or relating to moving coil instrumentsInfo
- Publication number
- GB1223852A GB1223852A GB3079167A GB3079167A GB1223852A GB 1223852 A GB1223852 A GB 1223852A GB 3079167 A GB3079167 A GB 3079167A GB 3079167 A GB3079167 A GB 3079167A GB 1223852 A GB1223852 A GB 1223852A
- Authority
- GB
- United Kingdom
- Prior art keywords
- arms
- coil
- spindle
- arm
- weight
- 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
- G01R5/02—Moving-coil instruments
- G01R5/04—Moving-coil instruments with magnet external to the coil
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
1,223,852. Electric motors. SMITHS INDUSTRIES Ltd. June 21, 1968 [July 4, 1967], No. 30791/ 67. Heading G1Q. A moving coil instrument of the type in which the coil 10 is mounted entirely on one side of the rotational spindle 16 (on an arm 12) and is balanced by a balance weight 61 on the opposite side of the spindle has two parallel arms 45 for carrying the weight, which is manually adjustable relative to these arms. A groove in the weight engages ledges 47 on the arms, and serrations 68 engage similar serrations on the arms to retain the weight in the set position. The resilient arms are formed integrally as part of a plastics structure including a sleeve 17 to fit on the spindle, the arm 12 which carries the coil of the instrument and side arms 42 which carry poise weights 62 for further balancing the system. These weights are of spring form and are mounted on resilient limbs 40 which are pressed down and retained by ledges in the arms 42. The coil 10 is wound on a former 11 which fits resiliently on to the arm 12 by engagement of projections 33, 34 with similar projections 30, 31 in the arm structure. Contacts 60 engaging projections 20, 21 facilitate the connection between the coil and the spindle. The magnet structure (not shown) has annular pole-pieces disposed within and below the coil 10 centred on the axis 18.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3079167A GB1223852A (en) | 1967-07-04 | 1967-07-04 | Improvements in or relating to moving coil instruments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3079167A GB1223852A (en) | 1967-07-04 | 1967-07-04 | Improvements in or relating to moving coil instruments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1223852A true GB1223852A (en) | 1971-03-03 |
Family
ID=10313183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3079167A Expired GB1223852A (en) | 1967-07-04 | 1967-07-04 | Improvements in or relating to moving coil instruments |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1223852A (en) |
-
1967
- 1967-07-04 GB GB3079167A patent/GB1223852A/en not_active Expired
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