GB340959A - Improvements in tachometer jewel frame and drive shaft retainer - Google Patents
Improvements in tachometer jewel frame and drive shaft retainerInfo
- Publication number
- GB340959A GB340959A GB16852/29A GB1685229A GB340959A GB 340959 A GB340959 A GB 340959A GB 16852/29 A GB16852/29 A GB 16852/29A GB 1685229 A GB1685229 A GB 1685229A GB 340959 A GB340959 A GB 340959A
- Authority
- GB
- United Kingdom
- Prior art keywords
- frame
- studs
- magnet
- rotor shaft
- jewel
- 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
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/49—Devices characterised by the use of electric or magnetic means for measuring angular speed using eddy currents
- G01P3/495—Devices characterised by the use of electric or magnetic means for measuring angular speed using eddy currents where the indicating means responds to forces produced by the eddy currents and the generating magnetic field
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
340,959. Eddy current speedometers. A.C. SPARK PLUG CO., Flint, Michigan, U.S.A. May 31, 1929, No. 16852. Convention date, Feb. 16. Void [Published under Sect. 91 of the Acts]. [Class 106 (iii).] An eddy current speedometer comprises a casing 7, frame 9, C-shaped magnets 11, 15, rotor shaft 33, spider rotor 31, and drag disc 18. The magnet 11 is held in position by rivets 11<1> and the magnet 15 by means of a crescent-shaped jewel frame 13 kept pressed against the magnet 15 by means of studs 10, 10<1> and clamping plates 20 and by means of the compensator 23, clamp 20 and stud 101. The four studs 10, 10<1> are diametrically positioned and the two studs 10<1> lengthened to secure the speedometer to its support. The drag disc 18 is attached to a spindle 17 journalled at one end in the rotor shaft 33 and journalled at the other end in a radial arm 14 of the jewel frame 13. The spindle 17 has associated with it the usual hair spring 23<1>, regulator 16 a n d indicating pointer 45. A retaining member 25 for the rotor shaft 33 is seated in a recess in the bottom of the frame 9, to which it is secured by rivets 28, and extends into an annular groove 27 of shaft 33. A magnetic calibrating member 24 is fixed over the clamp 20 retaining the compensator 23 in position and can be bent for calibration purposes.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US340959XA | 1929-02-16 | 1929-02-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB340959A true GB340959A (en) | 1931-01-01 |
Family
ID=21874276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB16852/29A Expired GB340959A (en) | 1929-02-16 | 1929-05-31 | Improvements in tachometer jewel frame and drive shaft retainer |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB340959A (en) |
-
1929
- 1929-05-31 GB GB16852/29A patent/GB340959A/en not_active Expired
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