GB365762A - Improvements in and relating to respiratory apparatus for protection against poisonous and injurious substances - Google Patents

Improvements in and relating to respiratory apparatus for protection against poisonous and injurious substances

Info

Publication number
GB365762A
GB365762A GB583/31A GB58331A GB365762A GB 365762 A GB365762 A GB 365762A GB 583/31 A GB583/31 A GB 583/31A GB 58331 A GB58331 A GB 58331A GB 365762 A GB365762 A GB 365762A
Authority
GB
United Kingdom
Prior art keywords
air
respirator
regulator
pressure
filters
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
Application number
GB583/31A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB365762A publication Critical patent/GB365762A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B15/00—Installations affording protection against poisonous or injurious substances, e.g. with separate breathing apparatus

Landscapes

  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • Toxicology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

365,762. Respiratory apparatus. MUNTWYLER, A., Andermatt, Switzerland. Jan. 7, 1931, No. 583. Convention date, Jan. 20, 1930. [Class 81 (ii).] Apparatus for protection against poisonous and injurious solids, vapours, or gases comprises means for drawing in and filtering air, automatically regulating its pressure and quantity as required, and supplying it to respirators having inhaling and exhaling valves. Air is drawn in through any of pipes 1, 2, 3 by means of a fan 5, blower, or the like, and passes through some or all of the filters 7, 71, 7<11>. Reserve filters 8, 81, 8<11> may be provided. Air taken from tapping points 9, 10 can be analysed in apparatus 11, 12. Purified air passes by a pipe 13, where its temperature and humidity may be adjusted, to a bellows 14 having an air inlet valve 17 actuated by a rod 18 depending from the movable top 16 having a balancing weight 20. The valve casing 17<1> is made of varying cross section. The pressure in the regulator is varied by altering the load on the top 16. If the air supply fails, a valve 23 is opened by a, rod 21 and air enters from a cylinder 26. A check valve 27 prevents return of air to the filters. The consumer wears a respirator connected to tapping points 28 by a hose 31 which may be divided at the coupling 32, which is secured to a body belt. It is therefore possible for an individual wearing an ordinary respirator to connect himself to the installation without removal of the respirator. Instead of the regulator 14, a similar regulator may be inserted between each respirator and a tapping 28 of the supply pipe 13. Pressure gauges 40 may be arranged at desired points. The whole installation or the individual parts may be portable. The air may be enriched with oxygen which may be supplied in variable doses, or adapted to the air consumption by connecting an oxygen container to the pressure regulator provided with an oxygen inlet valve.
GB583/31A 1930-01-20 1931-01-07 Improvements in and relating to respiratory apparatus for protection against poisonous and injurious substances Expired GB365762A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH365762X 1930-01-20

Publications (1)

Publication Number Publication Date
GB365762A true GB365762A (en) 1932-01-28

Family

ID=4513333

Family Applications (1)

Application Number Title Priority Date Filing Date
GB583/31A Expired GB365762A (en) 1930-01-20 1931-01-07 Improvements in and relating to respiratory apparatus for protection against poisonous and injurious substances

Country Status (1)

Country Link
GB (1) GB365762A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2335245A1 (en) * 1975-12-19 1977-07-15 Auergesellschaft Gmbh PROCESS FOR REGENERATION OF THE AIR CONTAINED IN AN ENCINT
US4974585A (en) * 1989-04-19 1990-12-04 Cis-Lunar Development Laboratories Breathing apparatus gas-routing manifold

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2335245A1 (en) * 1975-12-19 1977-07-15 Auergesellschaft Gmbh PROCESS FOR REGENERATION OF THE AIR CONTAINED IN AN ENCINT
US4974585A (en) * 1989-04-19 1990-12-04 Cis-Lunar Development Laboratories Breathing apparatus gas-routing manifold

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