GB392882A - Improvements in or relating to liquid level indicating arrangements of the transparent gauge type - Google Patents
Improvements in or relating to liquid level indicating arrangements of the transparent gauge typeInfo
- Publication number
- GB392882A GB392882A GB640233A GB640233A GB392882A GB 392882 A GB392882 A GB 392882A GB 640233 A GB640233 A GB 640233A GB 640233 A GB640233 A GB 640233A GB 392882 A GB392882 A GB 392882A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gauge
- red
- rays
- green
- colour
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/78—Adaptations or mounting of level indicators
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/02—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by gauge glasses or other apparatus involving a window or transparent tube for directly observing the level to be measured or the level of a liquid column in free communication with the main body of the liquid
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Projection Apparatus (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
392,882. Indicating liquid levels. ELECTRICAL IMPROVEMENTS, Ltd., Carliol House, Newcastle-on-Tyne, and BLACKBURN, C. L., 2, Ryder Street, London. Dec. 18, 1931, No. 6402/33. [Class 123 (i).] In a liquid-level indicator of the transparent gauge type, differently coloured beams of light are directed on to the gauge at such an angle to one another that from a chosen observing point the gauge will appear as of one colour above the liquid-level, and of the other colour below the liquid-level. The indications of the gauge may be reproduced at a convenient position on the firing floor by the optical arrangement described in Specification 387,752. In Figs. 8 and 9, two colour screens H4, H5, respectively red and green, are arranged between a condensing mirror H<2> and the gauge G. A source of light H<1>, and a reflector H<3> provide the illumination, and the red rays K<2> are deflected on to the gauge by a prism H<6>, the green rays K<1> going straight to the gauge. The green rays' emerge as divergent beams K<3>, K<4>, one of which passes to the projecting apparatus J, and the red rays also emerge as divergent beams K<5>, K<6>. The beams K<3>, K<6> are caused by the projecting apparatus to show the water level as the dividing line between red and green parts of the image of the gauge, Figs. 8 and 9 showing the path of the rays below and above the water level, respectively. The gauge may be viewed directly without a projection apparatus by locating a vertical light strip N behind a diffusing screen, and two colour screens O, O<1> with a cylindrical lens P close to the gauge G, the colour screens being in the focal plane of the lens. To an observer walking past the gauge, it appears in turn green above the water level, and dark below, then dark above the water level and red below. In a modification, differently coloured glow discharge tubes may be used. A gauge glass of the kind described in Specifications 263,638, [Class 123 (i), Liquidlevel regulating &c.], or 392,642 may be employed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB640233A GB392882A (en) | 1931-12-18 | 1931-12-18 | Improvements in or relating to liquid level indicating arrangements of the transparent gauge type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB640233A GB392882A (en) | 1931-12-18 | 1931-12-18 | Improvements in or relating to liquid level indicating arrangements of the transparent gauge type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB392882A true GB392882A (en) | 1933-05-25 |
Family
ID=9813854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB640233A Expired GB392882A (en) | 1931-12-18 | 1931-12-18 | Improvements in or relating to liquid level indicating arrangements of the transparent gauge type |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB392882A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE951812C (en) * | 1952-10-23 | 1956-11-08 | Eduard Brosche | Illuminated liquid level indicator, especially for steam boilers |
| WO2005029009A1 (en) * | 2003-09-12 | 2005-03-31 | Clark-Reliance Corporation | Liquid level gage and illuminator therefore |
| US7197926B2 (en) | 2002-11-04 | 2007-04-03 | Fossil Power Systems Inc. | Solid state illuminator for bi-color ported water level gauges |
-
1931
- 1931-12-18 GB GB640233A patent/GB392882A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE951812C (en) * | 1952-10-23 | 1956-11-08 | Eduard Brosche | Illuminated liquid level indicator, especially for steam boilers |
| US7197926B2 (en) | 2002-11-04 | 2007-04-03 | Fossil Power Systems Inc. | Solid state illuminator for bi-color ported water level gauges |
| US7213457B2 (en) * | 2002-11-04 | 2007-05-08 | Fossil Power Systems Inc. | Solid state illuminator for bi-color ported water level gauges |
| US7401512B2 (en) | 2002-11-04 | 2008-07-22 | Fossil Steam Technologies Inc. | Solid state illuminator for bi-color ported water level gauges |
| WO2005029009A1 (en) * | 2003-09-12 | 2005-03-31 | Clark-Reliance Corporation | Liquid level gage and illuminator therefore |
| US7047806B2 (en) | 2003-09-12 | 2006-05-23 | Clark-Reliance Corporation | Liquid level gage and illuminator therefor |
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