GB252588A - Improvements in and relating to height finders - Google Patents
Improvements in and relating to height findersInfo
- Publication number
- GB252588A GB252588A GB2120625A GB2120625A GB252588A GB 252588 A GB252588 A GB 252588A GB 2120625 A GB2120625 A GB 2120625A GB 2120625 A GB2120625 A GB 2120625A GB 252588 A GB252588 A GB 252588A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plummet
- line
- parachute
- switch
- reel
- 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
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
- G01C5/005—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels altimeters for aircraft
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
252,588. Todd, E. N., and Sterling, O. W. Aug. 24, 1925. Distances, determining. - A wireless transmitting apparatus is adapted to be thrown from an aircraft and to be set in action on reaching ground or water, the time elapsing between the moment the apparatus is dropped and the reception of the signal being noted by the airman and used bv him to calculate the 'height of the aircraft from known data as to - the speed at which the apparatus falls. The apparatus shown comprises a buzzer 17, Fig. 5, connected to a spark-transmitter 31, and supplied with current from a battery 21 through a switch 25. These devices are contained in a casing 10, Fig. 6, connected to a parachute 11 by a line 13 acting as antenna, and a plummet 14 is hung from an insulator 15 attached to the switch 25, which is thereby kept open until the plummet touches the ground or water, when the plummet line slackens and a spring 26 closes the switch. The parachute 11 and the line 13 are normally wound round a reel 52, and the plummet line round a reel 50. These reels are dropped with the casing 10; the lines and the parachute unroll and extend during the first part of the fall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2120625A GB252588A (en) | 1925-08-24 | 1925-08-24 | Improvements in and relating to height finders |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2120625A GB252588A (en) | 1925-08-24 | 1925-08-24 | Improvements in and relating to height finders |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB252588A true GB252588A (en) | 1926-06-03 |
Family
ID=10158953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2120625A Expired GB252588A (en) | 1925-08-24 | 1925-08-24 | Improvements in and relating to height finders |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB252588A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7794184B2 (en) | 2005-05-19 | 2010-09-14 | Robert Bosch Gmbh | Dust catcher |
| CN113959399A (en) * | 2021-08-26 | 2022-01-21 | 中铁三局集团有限公司 | Observation point without influence on road traffic |
-
1925
- 1925-08-24 GB GB2120625A patent/GB252588A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7794184B2 (en) | 2005-05-19 | 2010-09-14 | Robert Bosch Gmbh | Dust catcher |
| CN113959399A (en) * | 2021-08-26 | 2022-01-21 | 中铁三局集团有限公司 | Observation point without influence on road traffic |
| CN113959399B (en) * | 2021-08-26 | 2024-05-24 | 中铁三局集团有限公司 | Observation point without influencing road traffic |
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