GB237185A - Improvements in breathing apparatus - Google Patents

Improvements in breathing apparatus

Info

Publication number
GB237185A
GB237185A GB549625A GB549625A GB237185A GB 237185 A GB237185 A GB 237185A GB 549625 A GB549625 A GB 549625A GB 549625 A GB549625 A GB 549625A GB 237185 A GB237185 A GB 237185A
Authority
GB
United Kingdom
Prior art keywords
flow
oxygen
meter
user
barometer
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
GB549625A
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.)
ROBERT HENRY DAVIES
Original Assignee
ROBERT HENRY DAVIES
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 ROBERT HENRY DAVIES filed Critical ROBERT HENRY DAVIES
Priority to GB549625A priority Critical patent/GB237185A/en
Publication of GB237185A publication Critical patent/GB237185A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B7/00—Respiratory apparatus
    • A62B7/02—Respiratory apparatus with compressed oxygen or air

Landscapes

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

Abstract

237,185. Davis, R. H. Feb. 27, 1925. Respirators.-Breathing-apparatus for supplying oxygen or air to airmen, and of the class described in Specification 131,371, comprises a hand device and an automatic barometric device for the control of the oxygen supply to the user and means whereby either device, can be rendered operative as desired. The oxygen from a cylinder connected to a nozzle d communicates with a pressure gauge b and with a reducing valve c, and thence passes through a pipe o to a control valve e. By turning the control valve the user may direct, the oxygen through a byepass m tothe flow-meter and thence to his face mask, or may divert the flow to a cylinder h<1> .containing a piston valve actuated by an aneroid barometer g. The movements of the barometer automatically regulate the flow through an outlet pipe leading to the flow-meter.
GB549625A 1925-02-27 1925-02-27 Improvements in breathing apparatus Expired GB237185A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB549625A GB237185A (en) 1925-02-27 1925-02-27 Improvements in breathing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB549625A GB237185A (en) 1925-02-27 1925-02-27 Improvements in breathing apparatus

Publications (1)

Publication Number Publication Date
GB237185A true GB237185A (en) 1925-07-23

Family

ID=9797287

Family Applications (1)

Application Number Title Priority Date Filing Date
GB549625A Expired GB237185A (en) 1925-02-27 1925-02-27 Improvements in breathing apparatus

Country Status (1)

Country Link
GB (1) GB237185A (en)

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