GB530702A - Illuminating means for navigating instruments - Google Patents
Illuminating means for navigating instrumentsInfo
- Publication number
- GB530702A GB530702A GB17565/39A GB1756539A GB530702A GB 530702 A GB530702 A GB 530702A GB 17565/39 A GB17565/39 A GB 17565/39A GB 1756539 A GB1756539 A GB 1756539A GB 530702 A GB530702 A GB 530702A
- Authority
- GB
- United Kingdom
- Prior art keywords
- light
- bubble
- ring
- sextants
- june
- 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
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
- G01C9/18—Measuring inclination, e.g. by clinometers, by levels by using liquids
- G01C9/24—Measuring inclination, e.g. by clinometers, by levels by using liquids in closed containers partially filled with liquid so as to leave a gas bubble
- G01C9/26—Details
- G01C9/32—Means for facilitating the observation of the position of the bubble, e.g. illuminating means
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
530,702. Sextants ; clinometers. BENDIX AVIATION CORPORATION. June 15, 1939, No. 17565. Convention date, June 18, 1938. [Class 97 (ii)] In sextants and like instruments provided with a bubble level, means are provided for illuminating uniformly the periphery of the bubble. The bubble chamber comprises a frame 10a, lens 12 and glass plate 15, the chamber being in communication with a flexible diaphragm pump 32. A point source of light 23 is provided, the light passing through one of a series of apertures 29 on a disc 28 to give the intensity desired. The light then passes through a member 22 to the light distributing device 19 comprising an annular ring having reflecting surfaces 38 which causes the light to be conducted along the two halves of the ring. The ring 19 is provided with a series of grooves as shown of gradually decreasing radii whereby the light is deflected upwardly uniformly at all distances from the light source. The light projected on to the conical surfaces 17 of the bubble chamber is deflected to impinge on to the periphery of the bubble 37.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US530702XA | 1938-06-18 | 1938-06-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB530702A true GB530702A (en) | 1940-12-18 |
Family
ID=21981739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB17565/39A Expired GB530702A (en) | 1938-06-18 | 1939-06-15 | Illuminating means for navigating instruments |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB530702A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10337832B1 (en) * | 2014-07-28 | 2019-07-02 | Zerolight, Llc | Illumination system for weapon optics |
-
1939
- 1939-06-15 GB GB17565/39A patent/GB530702A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10337832B1 (en) * | 2014-07-28 | 2019-07-02 | Zerolight, Llc | Illumination system for weapon optics |
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