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GB497775A - Improvements in and relating to fluid pressure measuring instruments for testing oxygen breathing apparatus - Google Patents

Improvements in and relating to fluid pressure measuring instruments for testing oxygen breathing apparatus

Info

Publication number
GB497775A
GB497775A GB2112/38A GB211238A GB497775A GB 497775 A GB497775 A GB 497775A GB 2112/38 A GB2112/38 A GB 2112/38A GB 211238 A GB211238 A GB 211238A GB 497775 A GB497775 A GB 497775A
Authority
GB
United Kingdom
Prior art keywords
cock
tested
oxygen
pressure measuring
pressure
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
GB2112/38A
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 GB497775A publication Critical patent/GB497775A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L13/00—Devices or apparatus for measuring differences of two or more fluid pressure values
    • G01L13/02—Devices or apparatus for measuring differences of two or more fluid pressure values using elastically-deformable members or pistons as sensing elements

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

497,775. Pressure gauges. DRAGER, O. H. Jan. 21, 1938, No. 2112. Convention date, Jan. 22, 1937. [Class 106 (ii)] Oxygen-breathing apparatus is tested for air tightness and amount of oxygen supplied per unit time by a device having a plurality of diaphragm boxes 3-6 connected in series, and a cock 9 fitted in a passage 2 leading to the pressure measuring device, by turning which an orifice 10 of predetermined size leading from the passage to the atmosphere can be opened or closed. Each box has a screwed socket and plug 11, 12 for connecting with the next, the last box 6 being connected by a pin 13, quadrant lever 14, and pinion 16 to a pointer 17 moving over scales 18, 19. With the cock 9 in the position shown, if oxygen is supplied to the apparatus when connected up, the gauge indicates the pressure differential between the supply and the atmosphere and the amount of gas supplied per unit time is indicated on scale 19. If the cock is turned through 180‹ the safety valve of the apparatus may be tested and adjusted to correct pressure and the apparatus tested for air-tightness.
GB2112/38A 1937-01-22 1938-01-21 Improvements in and relating to fluid pressure measuring instruments for testing oxygen breathing apparatus Expired GB497775A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE497775X 1937-01-22

Publications (1)

Publication Number Publication Date
GB497775A true GB497775A (en) 1938-12-28

Family

ID=6545226

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2112/38A Expired GB497775A (en) 1937-01-22 1938-01-21 Improvements in and relating to fluid pressure measuring instruments for testing oxygen breathing apparatus

Country Status (1)

Country Link
GB (1) GB497775A (en)

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