GB448516A - Improvements in or relating to observation instruments - Google Patents
Improvements in or relating to observation instrumentsInfo
- Publication number
- GB448516A GB448516A GB3615734A GB3615734A GB448516A GB 448516 A GB448516 A GB 448516A GB 3615734 A GB3615734 A GB 3615734A GB 3615734 A GB3615734 A GB 3615734A GB 448516 A GB448516 A GB 448516A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sound
- tubes
- instrument
- discharge
- pair
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J40/00—Photoelectric discharge tubes not involving the ionisation of a gas
- H01J40/02—Details
- H01J40/14—Circuit arrangements not adapted to a particular application of the tube and not otherwise provided for
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
448,516. Locating and measuring sounds and like vibrations. HEINRICH, P., 5, Scharnweberstrasse, Hohenschoenhausen, Berlin. Dec. 17, 1934, No. 36157. [Class 118 (ii)] [See also Group XL] A field glass is combined with a sound locator and is provided with a visual indicator for indicating the intensity of the sound received so that the field glass can be easily directed towards the source of the waves. As shown in Fig. 1, a single sound receiver 10 is mounted on a telescope 4 which is provided with a pair of discharge tubes arranged so that the discharge varies with the intensity of sound received. The instrument is orientated until the discharge in the tubes is a maximum when the object producing the sound should be visible in the telescope. The embodiment shown in Fig. 2 comprises a pair of field glasses 12 and a pair of sound receivers 17, 18, the sound receivers controlling respectively discharge tubes 23, 24 mounted together in one of the field glasses and provided with a, common scale 26. When the instrument is pointing towards the distant object, the discharges in the two tubes are of the same length. Head phones may also be connected to the sound receivers if desired. Instead of sound waves, the instrument may be adapted to receive light or wireless waves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3615734A GB448516A (en) | 1934-12-17 | 1934-12-17 | Improvements in or relating to observation instruments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3615734A GB448516A (en) | 1934-12-17 | 1934-12-17 | Improvements in or relating to observation instruments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB448516A true GB448516A (en) | 1936-06-10 |
Family
ID=10385498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3615734A Expired GB448516A (en) | 1934-12-17 | 1934-12-17 | Improvements in or relating to observation instruments |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB448516A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2569010A (en) * | 1951-09-25 | Gun sight | ||
| US2935728A (en) * | 1946-02-15 | 1960-05-03 | Rca Corp | Underwater object locator |
| US3614723A (en) * | 1967-08-19 | 1971-10-19 | Licentia Gmbh | Aiming arrangement |
-
1934
- 1934-12-17 GB GB3615734A patent/GB448516A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2569010A (en) * | 1951-09-25 | Gun sight | ||
| US2935728A (en) * | 1946-02-15 | 1960-05-03 | Rca Corp | Underwater object locator |
| US3614723A (en) * | 1967-08-19 | 1971-10-19 | Licentia Gmbh | Aiming arrangement |
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