GB679024A - Improvements relating to apparatus for sampling particulate clouds - Google Patents
Improvements relating to apparatus for sampling particulate cloudsInfo
- Publication number
- GB679024A GB679024A GB2375449A GB2375449A GB679024A GB 679024 A GB679024 A GB 679024A GB 2375449 A GB2375449 A GB 2375449A GB 2375449 A GB2375449 A GB 2375449A GB 679024 A GB679024 A GB 679024A
- Authority
- GB
- United Kingdom
- Prior art keywords
- capsule
- valve
- poppet
- air
- piston
- 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
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N1/2205—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with filters
-
- 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
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N2001/222—Other features
- G01N2001/2223—Other features aerosol sampling devices
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)
- Sampling And Sample Adjustment (AREA)
Abstract
679,024. Compressed air engines; engine valve-gear. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Dec. 14, 950 [Sept. 14, 1949], No. 23754/49. Classes 122(ii) and 122(iii) [Also in Group XXVIII] The working stroke of a piston 43, Fig. 1, is effected by air pressure from a reservoir 70 when a poppet valve 90 is open and the return stroke is effected by the inherent resilience of bellows 41, on unseating the poppet 94 and venting the air through an aperture 92a. The poppet 94 is held from its seat for fifteen minutes between piston strokes by a capsule 93b supplied with air from the reservoir 70 through a duct 111, a normally open relay ball valve 108, Fig. 7, and a duct 112. The valve 108 is closed for the duration of a working stroke of the piston 43, i.e. between 5 and 10 second at the end of a fifteen minute filtering period (see Group XXVIII) by a capsule 108a, which is supplied with compressed air from a continuous jet 102 when the latter and peripheral holes in plates 98, 100 rotated at nine and one r.p.h. respectively by clockwork mechanism 3 register so as to allow the jet 102 access to a receiving jet 103 and the capsule 108a connected therewith.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2375449A GB679024A (en) | 1949-09-14 | 1949-09-14 | Improvements relating to apparatus for sampling particulate clouds |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2375449A GB679024A (en) | 1949-09-14 | 1949-09-14 | Improvements relating to apparatus for sampling particulate clouds |
Publications (1)
Publication Number | Publication Date |
---|---|
GB679024A true GB679024A (en) | 1952-09-10 |
Family
ID=10200770
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2375449A Expired GB679024A (en) | 1949-09-14 | 1949-09-14 | Improvements relating to apparatus for sampling particulate clouds |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB679024A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3232094A (en) * | 1962-05-08 | 1966-02-01 | Bernard M Teschner | Automatic air analyzer |
-
1949
- 1949-09-14 GB GB2375449A patent/GB679024A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3232094A (en) * | 1962-05-08 | 1966-02-01 | Bernard M Teschner | Automatic air analyzer |
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