GB754800A - Improvements in or relating to oxygen breathing apparatus - Google Patents
Improvements in or relating to oxygen breathing apparatusInfo
- Publication number
- GB754800A GB754800A GB2549354A GB2549354A GB754800A GB 754800 A GB754800 A GB 754800A GB 2549354 A GB2549354 A GB 2549354A GB 2549354 A GB2549354 A GB 2549354A GB 754800 A GB754800 A GB 754800A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cartridge
- oxygen
- valve
- socket
- auxiliary inlet
- 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
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title abstract 6
- 229910052760 oxygen Inorganic materials 0.000 title abstract 6
- 239000001301 oxygen Substances 0.000 title abstract 6
- 230000029058 respiratory gaseous exchange Effects 0.000 title abstract 5
- 101100269850 Caenorhabditis elegans mask-1 gene Proteins 0.000 abstract 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 230000000241 respiratory effect Effects 0.000 abstract 2
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract 1
- 239000001569 carbon dioxide Substances 0.000 abstract 1
- 239000011810 insulating material Substances 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B7/00—Respiratory apparatus
- A62B7/08—Respiratory apparatus containing chemicals producing oxygen
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Emergency Medicine (AREA)
- General Chemical & Material Sciences (AREA)
- Pulmonology (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
754,800. Respiratory apparatus. MINE SAFETY APPLIANCES CO. Sept. 2, 1954 No. 25493/54. Class 81(2). Respiratory apparatus comprises an inhalation tube connected to a breathing bag by a tubular fitting which has an auxiliary inlet surrounded by a socket joined to the fitting, the perforated inner end of an oxygen-generating cartridge being removably mounted in the outer end of the socket in sealing engagement therewith, a valve controlling the passage through the auxiliary inlet and having a stem engaging the inner end of the cartridge to hold the valve open, an oxygen-generating candle in the cartridge, manually operable means carried by the cartridge for igniting the candle to supply oxygen to the fitting and a spring for closing the valve when the cartridge is removed from the socket. The apparatus comprises a mask 1 connected by an inhalation tube 5 with a U-shaped breathing bag 9 by a tubular fitting 14. Exhaled air passes from the mask 1 through a slide valve 7 to a canister 11 which absorbs carbon dioxide and provides oxygen. The air passes from the canister 11 to the breathing bag through an inlet 8. Check valves 4, 6 are provided in the inhalation and exhalation tubes 5, 3 respectively. The tubular fitting 14, Fig. 2, is provided with an auxiliary inlet 16 through which oxygen from an ignited oxygen-generating candle 29 enters the breathing circuit when the device is first used until the canister 11 is sufficiently warm to provide the necessary supply of oxygen. The auxiliary inlet 16 is surrounded by a socket member 17 having an enlarged part with an internal shoulder 18 against which a metal cartridge 19 is held by a bayonet connection. A metal cylinder 24 surrounded by insulating material 32 within the cartridge 19 contains the oxygen-generating candle 29. When the cartridge 19 is placed in the socket member 17 a perforated end plate 26, which clamps the cartridge 19 and cylinder 24 together, presses against a valve stem 46 to move a valve member 45 housed within the socket member 17 off its seat 49 so that oxygen from the cartridge 19 may reach the auxiliary inlet 16. The oxygen-generating candle 29 is ignited when desired by a primer 27 which is detonated by a hammer 37 when a ring 43 at the outer end of the cartridge 19 is pulled. On removal of the cartridge 19 from the socket member 17, valve 45 is returned to its seat by a spring 50.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2549354A GB754800A (en) | 1954-09-02 | 1954-09-02 | Improvements in or relating to oxygen breathing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2549354A GB754800A (en) | 1954-09-02 | 1954-09-02 | Improvements in or relating to oxygen breathing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB754800A true GB754800A (en) | 1956-08-15 |
Family
ID=10228584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2549354A Expired GB754800A (en) | 1954-09-02 | 1954-09-02 | Improvements in or relating to oxygen breathing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB754800A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112221030A (en) * | 2020-09-30 | 2021-01-15 | 中国船舶重工集团公司第七一八研究所 | Multifunctional protective mask |
| CN113543854A (en) * | 2018-11-23 | 2021-10-22 | 德泽加控股乌克兰有限责任公司 | Heat insulation respirator |
-
1954
- 1954-09-02 GB GB2549354A patent/GB754800A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113543854A (en) * | 2018-11-23 | 2021-10-22 | 德泽加控股乌克兰有限责任公司 | Heat insulation respirator |
| CN112221030A (en) * | 2020-09-30 | 2021-01-15 | 中国船舶重工集团公司第七一八研究所 | Multifunctional protective mask |
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