DE349058C - Device to prevent fogging of the sight glasses in gas masks - Google Patents
Device to prevent fogging of the sight glasses in gas masksInfo
- Publication number
- DE349058C DE349058C DENDAT349058D DE349058DD DE349058C DE 349058 C DE349058 C DE 349058C DE NDAT349058 D DENDAT349058 D DE NDAT349058D DE 349058D D DE349058D D DE 349058DD DE 349058 C DE349058 C DE 349058C
- Authority
- DE
- Germany
- Prior art keywords
- gelatin
- water
- gas masks
- prevent fogging
- sight glasses
- 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
- A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
- A62B18/08—Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
- A62B18/082—Assembling eyepieces, lenses or vision-correction means in or on gas-masks
Landscapes
- Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
Description
Vihrru@rlitn Yßrhndern des Beschlagens der Schaugläser bei Gasmasken. Zusatz zum Patent 333521. Den Gegenstand des Patentes 333521 bilden Schaugläser für Gasschutzmasken, bei denen, zwecks Erhaltung der Durchsichtigkeit bei Wasserbeschlag, auswechselbare Scheiben aus Gelatine .vorgesehen sind. Bei mäßiger Wasserabscheidung in der Maske läßt sich die beäbsichtigte Wirkung bereits mit reinen Gelatinescheiben in befriedigender Weise erreichen und die Dauer des Durchsichtigbleibens der Schauglasflächen gegenüber unbewehrten Schaugläsern wesentlich steigern. Im Falle einer sehr starken Wasserabscheidung nehmen jedoch reine Gelatinescheiben unter Umständen so viel Wasser auf, daß nach einiger Zeit infolge Wasserabgabe von der Gelatine die dieser benachbarte Schauglasfläche beschlägt.Vihrru @ rlitn Yßrhndern the fogging of the sight glasses in gas masks. Addition to patent 333521. The subject of patent 333521 are sight glasses for protective gas masks, in which replaceable gelatine disks are provided to maintain transparency in the event of water misting. With moderate water separation in the mask, the intended effect can be achieved in a satisfactory manner even with pure gelatin slices and the length of time that the viewing glass surfaces remain transparent compared to unreinforced viewing glasses is significantly increased. In the case of very strong water separation, however, pure gelatin slices may absorb so much water that after some time, as a result of the release of water from the gelatin, the viewing glass surface adjacent to it will fog up.
Dieser Möglichkeit wird gemäß der Erfindung dadurch vorgebeugt, daß zwischen der zu schützenden Schauglasfläche und der das Undurchsichtigwerden verhindernden Gelatinescheibe eine Zwischenlage aus einer wasserundurchlässigen oder nur wenig wasserdurchlässigen, durchsichtigen Masse vorgesehen wird. Hierfür kann eine Filmscheibe aus Zellon oder Zellhorn benutzt werden, die als getrennte, abdichtende Zwischenlage zwischen Schauglas und Gelatinescheibe eingesetzt ist. Die wasserundurchlässige Filmscheibe kann auch mit der Gelatinescheibe zu einem einzigen Stück vereinigt sein.This possibility is prevented according to the invention in that between the sight glass surface to be protected and the one preventing it from becoming opaque Gelatin slice an intermediate layer of a water-impermeable or only a little water-permeable, transparent mass is provided. A film disc can be used for this made of Zellon or Zellhorn are used as a separate, sealing intermediate layer is inserted between the sight glass and gelatin disc. The waterproof one The film disc can also be combined with the gelatin disc into a single piece be.
Der gewünschte Zweck läßt sich auch dadurch erreichen, daB die Gelatinescheibe auf der dem Schauglas benachbarten Seite finit einem wasserundurchlässigen, durchsichtigen Lack bestrichen wird.The desired purpose can also be achieved in that the gelatin slice on the side adjacent to the sight glass finitely a water-impermeable, transparent one Paint is coated.
Mit allen diesen Mitteln soll ein Übertreten des von der Gelatine aufgenommenen Wassers auf das Schauglas vermieden werden.With all these means a violation of the gelatine is supposed absorbed water on the sight glass can be avoided.
An Stelle von Gelatine kann natürlich auch die an Wirkung gleichwertige Viskose verwendet werden.Instead of gelatine, it is of course also possible to use it with the same effect Viscose can be used.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE349058T |
Publications (1)
Publication Number | Publication Date |
---|---|
DE349058C true DE349058C (en) | 1922-02-23 |
Family
ID=6258052
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT349058D Expired DE349058C (en) | Device to prevent fogging of the sight glasses in gas masks |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE349058C (en) |
-
0
- DE DENDAT349058D patent/DE349058C/en not_active Expired
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