GB413837A - Improvements relating to speed indicators - Google Patents
Improvements relating to speed indicatorsInfo
- Publication number
- GB413837A GB413837A GB1255333A GB1255333A GB413837A GB 413837 A GB413837 A GB 413837A GB 1255333 A GB1255333 A GB 1255333A GB 1255333 A GB1255333 A GB 1255333A GB 413837 A GB413837 A GB 413837A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stator
- shunts
- copper
- speedometers
- poles
- 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
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P1/00—Details of instruments
- G01P1/04—Special adaptations of driving means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
413,837. Speedometers. WATSON, E. A., Zinal, Stoneleigh Road, Gibbet Hill, Coventry. April 29, 1933, No. 12553. [Class 106 (iii).] Temperature-compensating means is provided in electric eddy-current speedometers in which a generator driven at a rate equal to or proportional to the speed to be indicated, supplies alternating or polyphase current to windings b on a stator having pole pieces a between which a disc d or copper or aluminium, mounted on a spindle carrying a pointer g, can be rotated by the field of the stator against the pull of the spring f. The poles a are associated with magnetic shunts e of a nickel-copper alloy, the magnetic susceptibility of which diminishes with increase of temperature. One of the poles a is divided and provided with a copper shroud c. A higher degree of accuracy may be obtained by providing on the shunts e a small heating winding i associated with the stator windings. Alternatively a wound iron extension from the stator may be arranged alongside the shunts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1255333A GB413837A (en) | 1933-04-29 | 1933-04-29 | Improvements relating to speed indicators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1255333A GB413837A (en) | 1933-04-29 | 1933-04-29 | Improvements relating to speed indicators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB413837A true GB413837A (en) | 1934-07-26 |
Family
ID=10006744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1255333A Expired GB413837A (en) | 1933-04-29 | 1933-04-29 | Improvements relating to speed indicators |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB413837A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1231039B (en) * | 1959-12-08 | 1966-12-22 | Noris Tachometerwerk G M B H | Speed measuring device |
-
1933
- 1933-04-29 GB GB1255333A patent/GB413837A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1231039B (en) * | 1959-12-08 | 1966-12-22 | Noris Tachometerwerk G M B H | Speed measuring device |
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