GB694994A - Apparatus for and method of detecting suspended matter in fluids - Google Patents
Apparatus for and method of detecting suspended matter in fluidsInfo
- Publication number
- GB694994A GB694994A GB1419151A GB1419151A GB694994A GB 694994 A GB694994 A GB 694994A GB 1419151 A GB1419151 A GB 1419151A GB 1419151 A GB1419151 A GB 1419151A GB 694994 A GB694994 A GB 694994A
- Authority
- GB
- United Kingdom
- Prior art keywords
- air
- valve
- detector
- smoke
- clean air
- 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
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/26—Devices for withdrawing samples in the gaseous state with provision for intake from several spaces
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Fire-Detection Mechanisms (AREA)
Abstract
694,994. Fire alarms. SPECIALTIES DEVELOPMENT CORPORATION. June 15, 1951, No. 14191/51. Class 118 (i). In a system. for detecting smoke or other suspended matter in air, of the type in which samples of air from a plurality of sources (e.g. the holds of ships) are passed successively through a smoke detector, a purging medium (e.g. clean air) is passed along the path through the detector between each sample. The detector may be used to operate an alarm or fire extinguisher. In the apparatus shown, air from the various holds in a ship is extracted through pipes 12A-D terminating in ports 50, by an extraction fan located in an exhaust pipe 36. A motor 17 causes valves 56 to lift in turn so that samples of the air pass to the exhaust-pipe through the upper chamber 27 and a smoke detector 10. After each valve has closed a further valve 44 is opened and this causes clean air to pass through the detector. An indicator 15 shows which valve is opened or, when the clean air valve is open, which valve has just closed, and the motor is stopped when smoke is detected. Specification 360,246, [Group XXI], is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1419151A GB694994A (en) | 1951-06-15 | 1951-06-15 | Apparatus for and method of detecting suspended matter in fluids |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1419151A GB694994A (en) | 1951-06-15 | 1951-06-15 | Apparatus for and method of detecting suspended matter in fluids |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB694994A true GB694994A (en) | 1953-07-29 |
Family
ID=10036673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1419151A Expired GB694994A (en) | 1951-06-15 | 1951-06-15 | Apparatus for and method of detecting suspended matter in fluids |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB694994A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2243475A (en) * | 1990-04-26 | 1991-10-30 | David Theodore Nels Williamson | Gas and smoke alarm systems |
| GB2277625B (en) * | 1993-04-30 | 1996-08-28 | Kidde Fire Protection Ltd | Particle detecting apparatus and systems |
-
1951
- 1951-06-15 GB GB1419151A patent/GB694994A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2243475A (en) * | 1990-04-26 | 1991-10-30 | David Theodore Nels Williamson | Gas and smoke alarm systems |
| GB2243475B (en) * | 1990-04-26 | 1993-12-01 | David Theodore Nels Williamson | Improvements to gas and smoke alarm systems |
| GB2277625B (en) * | 1993-04-30 | 1996-08-28 | Kidde Fire Protection Ltd | Particle detecting apparatus and systems |
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