GB191856A - An improved system for the detection of smoke, or fine particles carried in suspension in a gas or vapour - Google Patents

An improved system for the detection of smoke, or fine particles carried in suspension in a gas or vapour

Info

Publication number
GB191856A
GB191856A GB28341/21A GB2834121A GB191856A GB 191856 A GB191856 A GB 191856A GB 28341/21 A GB28341/21 A GB 28341/21A GB 2834121 A GB2834121 A GB 2834121A GB 191856 A GB191856 A GB 191856A
Authority
GB
United Kingdom
Prior art keywords
pipe
smoke
valve
compartment
projected
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
GB28341/21A
Other languages
English (en)
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.)
Kidde Inc
Original Assignee
Walter Kidde and Co Inc
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
Priority to US480967A priority Critical patent/US1516608A/en
Application filed by Walter Kidde and Co Inc filed Critical Walter Kidde and Co Inc
Priority to GB28341/21A priority patent/GB191856A/en
Priority to NL20701A priority patent/NL14479C/xx
Priority to FR542978D priority patent/FR542978A/fr
Priority to DEK79789D priority patent/DE394973C/de
Publication of GB191856A publication Critical patent/GB191856A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/29—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using visual detection
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
    • G08B17/113—Constructional details

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Fire-Detection Mechanisms (AREA)
GB28341/21A 1921-06-28 1921-10-25 An improved system for the detection of smoke, or fine particles carried in suspension in a gas or vapour Expired GB191856A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US480967A US1516608A (en) 1921-06-28 1921-06-28 Detection of suspended matter in gases
GB28341/21A GB191856A (en) 1921-06-28 1921-10-25 An improved system for the detection of smoke, or fine particles carried in suspension in a gas or vapour
NL20701A NL14479C (xx) 1921-06-28 1921-11-01
FR542978D FR542978A (fr) 1921-06-28 1921-11-02 Perfectionnements aux appareils avertisseurs et extincteurs d'incendie
DEK79789D DE394973C (de) 1921-06-28 1921-11-06 Vorrichtung zur Ermittlung von Rauch oder fein verteilten Koerpern in Gasen oder Daempfen

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US480967A US1516608A (en) 1921-06-28 1921-06-28 Detection of suspended matter in gases
GB28341/21A GB191856A (en) 1921-06-28 1921-10-25 An improved system for the detection of smoke, or fine particles carried in suspension in a gas or vapour
NL20701A NL14479C (xx) 1921-06-28 1921-11-01
FR542978T 1921-11-02
DEK79789D DE394973C (de) 1921-06-28 1921-11-06 Vorrichtung zur Ermittlung von Rauch oder fein verteilten Koerpern in Gasen oder Daempfen

Publications (1)

Publication Number Publication Date
GB191856A true GB191856A (en) 1923-01-25

Family

ID=10274140

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28341/21A Expired GB191856A (en) 1921-06-28 1921-10-25 An improved system for the detection of smoke, or fine particles carried in suspension in a gas or vapour

Country Status (5)

Country Link
US (1) US1516608A (xx)
DE (1) DE394973C (xx)
FR (1) FR542978A (xx)
GB (1) GB191856A (xx)
NL (1) NL14479C (xx)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2549866A (en) * 1944-12-23 1951-04-24 Specialties Dev Corp Apparatus for visual detection of illuminated suspended matter in fluids
US2770162A (en) * 1952-06-05 1956-11-13 Specialties Dev Corp Apparatus for visually detecting suspended matter in fluid
US2731874A (en) * 1953-06-22 1956-01-24 Smoke detecting apparatus
US4385830A (en) * 1980-11-26 1983-05-31 Cornell Research Foundation, Inc. Direct measurement of vorticity by optical probe
EP0302977A1 (en) * 1987-08-14 1989-02-15 Noguchi, Tokushige Device for detecting or viewing materials floating in fluids

Also Published As

Publication number Publication date
DE394973C (de) 1924-05-13
US1516608A (en) 1924-11-25
FR542978A (fr) 1922-08-24
NL14479C (xx) 1926-04-15

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