GB358758A - Improvements in or relating to direction finders incorporating electron discharge devices - Google Patents
Improvements in or relating to direction finders incorporating electron discharge devicesInfo
- Publication number
- GB358758A GB358758A GB32922/30A GB3292230A GB358758A GB 358758 A GB358758 A GB 358758A GB 32922/30 A GB32922/30 A GB 32922/30A GB 3292230 A GB3292230 A GB 3292230A GB 358758 A GB358758 A GB 358758A
- Authority
- GB
- United Kingdom
- Prior art keywords
- galvanometer
- auxiliary anodes
- polepieces
- nov
- aircraft
- 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
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C17/00—Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
- G01C17/02—Magnetic compasses
- G01C17/28—Electromagnetic compasses
- G01C17/32—Electron compasses
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Color Electrophotography (AREA)
- Elimination Of Static Electricity (AREA)
Abstract
358,758. Magnetic tests. PERRYMAN ELECTRIC CO., Inc., 4901, Hudson Boulevard, North Bergen, New Jersey, U.S.A.-(Assignees of Schwerin, P. ; 47, West Pierrepont Avenue, Rutherford, New Jersey, U.S.A.) Nov. 1, 1930, No. 32922. Convention date, Nov. 2, 1929. [Class 37.] A direction finder for aircraft, ships or other vehicles consists of a thermionic valve having a cathode 20, a main anode 18, two semicylindrical auxiliary anodes 15, 16 and means such as polepieces 22 of material, for example permalloy, of high magnetic permeability and low permanent magnetism, for diverting lines of magnetic force due to the earth's magnetic field across the main electron stream so as to divert it to one or other of the auxiliary anodes. The anode 18 is connected through a galvanometer G and a battery B with the cathode, and a galvanometer G<1> is connected across the auxiliary anodes. The polepieces are preferably mounted parallel with the centre line of the aircraft, so that when travelling due west or east, the galvanometer G has a maximum and the galvanometer G<1> a minimum reading; when travelling due north or south, the galvanometer G has a minimum and the galvanometer G<1> a maximum reading.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US358758XA | 1929-11-02 | 1929-11-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB358758A true GB358758A (en) | 1931-10-15 |
Family
ID=21885306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32922/30A Expired GB358758A (en) | 1929-11-02 | 1930-11-01 | Improvements in or relating to direction finders incorporating electron discharge devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB358758A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2509394A (en) * | 1946-12-31 | 1950-05-30 | Atomic Energy Commission | Vacuum tube flux meter |
-
1930
- 1930-11-01 GB GB32922/30A patent/GB358758A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2509394A (en) * | 1946-12-31 | 1950-05-30 | Atomic Energy Commission | Vacuum tube flux meter |
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