GB509842A - Improvements in or relating to indicator correcting arrangements for use in radio direction finding and other apparatus - Google Patents
Improvements in or relating to indicator correcting arrangements for use in radio direction finding and other apparatusInfo
- Publication number
- GB509842A GB509842A GB218738A GB218738A GB509842A GB 509842 A GB509842 A GB 509842A GB 218738 A GB218738 A GB 218738A GB 218738 A GB218738 A GB 218738A GB 509842 A GB509842 A GB 509842A
- Authority
- GB
- United Kingdom
- Prior art keywords
- scale
- indicator
- curve
- reading
- correction curve
- 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
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
- G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Support Of Aerials (AREA)
Abstract
509,842. Indicating-apparatus. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., WRIGHT, G. M., and COCKERELL, C. S. Jan. 22. 1938, No. 2187. [Class 106 (iv] [Also in Group XL] Relates to an indicator correcting arrangement for use in radio direction finding and other apparatus in which a correction curve is superimposed upon the normal scale member. According to the invention, the reading edge or line of the indicator member is arranged to span a plurality of adjacent scale readings and to co-operate with the correction curve so that the intersection of the reading edge or line and the correction curve gives the corrected reading. In Fig. 1, the correction curve 3 is superimposed on the fixed annular scale 1 which is graduated with radial lines 2. The pointer comprises a transparent cursor 4 carried by the arm 5 which is rotated by the aerial shaft and the corrected reading is given by the intersection of the curve 3 and the oblique cursor line 7. The mark 8 gives uncorrected readings and facilitates the taking of "swing" readings when the received signals are too weak to allow accurate observation by the zero method. The transparent cursor may be replaced by an opaque pointer having an oblique or curved reading edge, Figs. 2, 3 and 6 (not shown). If the scale markings are oblique to the radius, the obliquity of the reading edge of the indicator may be varied and by suitably inclining the scale markings the reading edge may be radial, Figs. 4 and 5 (not shown). In any of the embodiments, the scale 1 may be transparent and illuminated from behind and the curve 3 may be drawn on a detachable transparent shield. According to the Provisional Specification, the correction curve may be positioned adjacent to the scale, in which case the reading edge of the indicator extends over the scale and the correction curve, the intersection of the curve and the indicator being projected on to the scale by radial lines drawn on the indicator. Specification 473,746, [Group XL], is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB218738A GB509842A (en) | 1938-01-22 | 1938-01-22 | Improvements in or relating to indicator correcting arrangements for use in radio direction finding and other apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB218738A GB509842A (en) | 1938-01-22 | 1938-01-22 | Improvements in or relating to indicator correcting arrangements for use in radio direction finding and other apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB509842A true GB509842A (en) | 1939-07-24 |
Family
ID=9735105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB218738A Expired GB509842A (en) | 1938-01-22 | 1938-01-22 | Improvements in or relating to indicator correcting arrangements for use in radio direction finding and other apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB509842A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3039427A (en) * | 1962-06-19 | Volumetric output indicating device | ||
| CN103557839A (en) * | 2013-10-23 | 2014-02-05 | 广东江龙船舶制造有限公司 | Dip meter |
-
1938
- 1938-01-22 GB GB218738A patent/GB509842A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3039427A (en) * | 1962-06-19 | Volumetric output indicating device | ||
| CN103557839A (en) * | 2013-10-23 | 2014-02-05 | 广东江龙船舶制造有限公司 | Dip meter |
| CN103557839B (en) * | 2013-10-23 | 2017-01-04 | 江龙船艇科技股份有限公司 | A kind of dipmeter |
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