GB373523A - Improvements in or relating to self-contained life saving breathing appliances - Google Patents

Improvements in or relating to self-contained life saving breathing appliances

Info

Publication number
GB373523A
GB373523A GB2832131A GB2832131A GB373523A GB 373523 A GB373523 A GB 373523A GB 2832131 A GB2832131 A GB 2832131A GB 2832131 A GB2832131 A GB 2832131A GB 373523 A GB373523 A GB 373523A
Authority
GB
United Kingdom
Prior art keywords
valve
pipe
piece
thumb
casing
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
GB2832131A
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
Priority to GB2832131A priority Critical patent/GB373523A/en
Publication of GB373523A publication Critical patent/GB373523A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes

Abstract

373,523. Respirators. DAVIS, R. H., 187, Westminster Bridge Road, London. Oct. 12, 1931, No. 28321. [Class 81 (ii).] In closed-circuit respiratory appliances wherein oxygen is delivered from a cylinder through a pipe 1 containing a valve 11 and thence through a right-angled connection pipe 2 and a reducing valve to the breathing bag, the reducing valve being byepassed by a pipe 8 controlled by a thumb-operated valve, loosening of the connection-piece 12 between the pipes 1, 2 is prevented by providing the casing 7 of the byepass valve with an extension piece 24 straddling the pipe 1 as at 25 or otherwise engaging the pipe 1 or a member rigidly secured thereto. The byepass valve comprises a pad 14 carried by one arm of a bell-crank lever 16 the other arm 18 of which is formed with a thumb-piece. The casing 7 has a lateral aperture 19 closed by a flexible diaphragm 22 immediately over the thumb-piece the whole forming a guard preventing accidental opening of the valve. A spring 20 within the casing maintains the valve-pad 14 normally in closing contact with the orifice of a jet 5 communicating with the pipe 2.
GB2832131A 1931-10-12 1931-10-12 Improvements in or relating to self-contained life saving breathing appliances Expired GB373523A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2832131A GB373523A (en) 1931-10-12 1931-10-12 Improvements in or relating to self-contained life saving breathing appliances

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2832131A GB373523A (en) 1931-10-12 1931-10-12 Improvements in or relating to self-contained life saving breathing appliances

Publications (1)

Publication Number Publication Date
GB373523A true GB373523A (en) 1932-05-26

Family

ID=10273810

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2832131A Expired GB373523A (en) 1931-10-12 1931-10-12 Improvements in or relating to self-contained life saving breathing appliances

Country Status (1)

Country Link
GB (1) GB373523A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5020531A (en) * 1988-12-29 1991-06-04 Amf Mares S.P.A. Automatic regulator for breathing apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5020531A (en) * 1988-12-29 1991-06-04 Amf Mares S.P.A. Automatic regulator for breathing apparatus

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