GB487281A - Improvements in or relating to the automatic indication of combustible gas admixtures - Google Patents
Improvements in or relating to the automatic indication of combustible gas admixturesInfo
- Publication number
- GB487281A GB487281A GB14418/37A GB1441837A GB487281A GB 487281 A GB487281 A GB 487281A GB 14418/37 A GB14418/37 A GB 14418/37A GB 1441837 A GB1441837 A GB 1441837A GB 487281 A GB487281 A GB 487281A
- Authority
- GB
- United Kingdom
- Prior art keywords
- explosion
- gas
- pict
- candle
- primed
- 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
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/50—Investigating or analyzing materials by the use of thermal means by investigating flash-point; by investigating explosibility
- G01N25/54—Investigating or analyzing materials by the use of thermal means by investigating flash-point; by investigating explosibility by determining explosibility
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/11—Automated chemical analysis
Abstract
<PICT:0487281/III/1> <PICT:0487281/III/2> In a device for detecting the concentration of combustible gases, e.g. methane in mine atmospheres, a sample of the gas is primed by the addition thereto of a vaporized supplementary fuel, whose vapour concentration is automatically regulated preferably to a constant value, and is then subjected to ignition, an eventual explosion being utilized to operate an indicating device. In the illustrated apparatus, the gas is forced by a diaphragm pump 16 into a space 4 in which a candle 2 of naphthalene mixed with b -naphthol is pressed down by a spring 3. The candle is heated by means (not shown) which may be automatically regulated by a device 15 responsive to variations of atmospheric pressure, so as to maintain a constant vapour pressure of naphthalene. The primed gas passes to an explosion chamber 5 fitted with a sparking plug 7 which is periodically actuated through a synchronous motor. The chamber has a diaphragm pressure gauge 8 which on the occurrence of explosion makes a contact 9 closing the circuit of the indicating device.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE487281X | 1936-05-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB487281A true GB487281A (en) | 1938-06-17 |
Family
ID=6543586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14418/37A Expired GB487281A (en) | 1936-05-23 | 1937-05-24 | Improvements in or relating to the automatic indication of combustible gas admixtures |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2170056A (en) |
| BE (1) | BE421688A (en) |
| FR (1) | FR822148A (en) |
| GB (1) | GB487281A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2673339A (en) * | 1952-02-25 | 1954-03-23 | James W Gray | Gas detector |
| BE554341A (en) * | 1956-01-20 | |||
| US3090038A (en) * | 1959-06-08 | 1963-05-14 | Great Lakes Pipe Line Company | Hazardous atmosphere detecting and signalling system |
| DE102018123097B4 (en) | 2018-09-20 | 2021-12-16 | Anton Paar Provetec Gmbh | Electric ignition for flash point tester |
-
0
- BE BE421688D patent/BE421688A/xx unknown
-
1937
- 1937-05-22 FR FR822148D patent/FR822148A/en not_active Expired
- 1937-05-24 GB GB14418/37A patent/GB487281A/en not_active Expired
- 1937-06-28 US US150782A patent/US2170056A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| BE421688A (en) | |
| FR822148A (en) | 1937-12-21 |
| US2170056A (en) | 1939-08-22 |
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