GB474851A - Improvements in or relating to air purifiers or filters, particularly for use in gas masks, dug-outs and poison-gas shelters - Google Patents
Improvements in or relating to air purifiers or filters, particularly for use in gas masks, dug-outs and poison-gas sheltersInfo
- Publication number
- GB474851A GB474851A GB22042/36A GB2204236A GB474851A GB 474851 A GB474851 A GB 474851A GB 22042/36 A GB22042/36 A GB 22042/36A GB 2204236 A GB2204236 A GB 2204236A GB 474851 A GB474851 A GB 474851A
- Authority
- GB
- United Kingdom
- Prior art keywords
- casing
- filter
- charcoal
- gas
- purifiers
- 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
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B23/00—Filters for breathing-protection purposes
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
474,851. Filtering gases. POELMAN, A. J. J., and ETABLISSEMENTS R. SCHNEIDER. Aug. 10, 1936, No. 22042. Convention date, Aug. 8, 1935. Addition to 440,584 and 440,585. [Class 8 (ii)] [Also in Group VI] Air purifiers, as described in the parent Specifications in which each pleated paper filter is connected to a corresponding physicochemical purifying element, e.g. charcoal, are provided with a preliminary filter element, e.g. of charcoal, before the paper filter. The casing for the purifying element may be provided with a plurality of annular ribs or flutings to prevent air passing down the walls without being purified, and the filter may be connected to the purifying element by a throat of comparatively small cross section. In gas shelters a plurality of purifiers are used. As shown, a pleated paper filter 1 is luted to plates 2 and 3. The air entering passes through a preliminary filter of charcoal between perforated walls 4 and 7. The filter casing is connected to the purifying element casing 12 by a throat of comparatively small cross section. A dished perforated diaphragm 15 provides for even distribution of the filtered air over the charcoal in the casing 12. The walls of the casing are fluted. A plurality of purifiers may be arranged on a partition 18.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR474851X | 1935-08-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB474851A true GB474851A (en) | 1937-11-09 |
Family
ID=8902887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22042/36A Expired GB474851A (en) | 1935-08-08 | 1936-08-10 | Improvements in or relating to air purifiers or filters, particularly for use in gas masks, dug-outs and poison-gas shelters |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB474851A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1213252B (en) * | 1961-08-28 | 1966-03-24 | Prof Dr Wilhelm Halden | Device for purifying the air you breathe |
| GB2157970A (en) * | 1984-04-27 | 1985-11-06 | Pall Corp | Respirator filter |
-
1936
- 1936-08-10 GB GB22042/36A patent/GB474851A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1213252B (en) * | 1961-08-28 | 1966-03-24 | Prof Dr Wilhelm Halden | Device for purifying the air you breathe |
| GB2157970A (en) * | 1984-04-27 | 1985-11-06 | Pall Corp | Respirator filter |
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