GB1098161A - Improvements in or relating to fire detection apparatus - Google Patents

Improvements in or relating to fire detection apparatus

Info

Publication number
GB1098161A
GB1098161A GB16544/65A GB1654465A GB1098161A GB 1098161 A GB1098161 A GB 1098161A GB 16544/65 A GB16544/65 A GB 16544/65A GB 1654465 A GB1654465 A GB 1654465A GB 1098161 A GB1098161 A GB 1098161A
Authority
GB
United Kingdom
Prior art keywords
tube
air
aperture
april
drawn
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
GB16544/65A
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.)
Nutricia Ltd
Original Assignee
Cow and Gate Ltd
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 Cow and Gate Ltd filed Critical Cow and Gate Ltd
Priority to GB16544/65A priority Critical patent/GB1098161A/en
Publication of GB1098161A publication Critical patent/GB1098161A/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
    • 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

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

1,098,161. Photo-electric turbidometers. COW & GATE Ltd. and G. K. Charles. April 15, 1966 [April 20, 1965], No.16544/65. Headings G1A and G1X. A smoke detector comprises a chamber through which a sample of air may pass and two sealed compartments containing respectively a lightsource and detector and communicating with said chamber through apertures sufficiently small that the air in the compartments remains substantially static during operation of the apparatus. Air samples are drawn by suction from a tube 16, Fig. 2 and through the inspection tube 10. Light passes from the lamp 19 through aperture 31 and longitudinally through the air stream to a photocell in a similar compartment at the other end of the sighting tube. In a modification, the aperture 51, Fig. 4 which shows the outlet end of tube 10, is extended to form a tube 52 and a shield 54 further reduces the possibility of smoke entering the compartment 15. A fan may be provided, Fig. 6 (not shown) which is rotated by the incoming air to direct the same away from the aperture. Samples may be drawn in turn from a plurality of locations to be monitored for the outbreak of fire.
GB16544/65A 1965-04-20 1965-04-20 Improvements in or relating to fire detection apparatus Expired GB1098161A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB16544/65A GB1098161A (en) 1965-04-20 1965-04-20 Improvements in or relating to fire detection apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB16544/65A GB1098161A (en) 1965-04-20 1965-04-20 Improvements in or relating to fire detection apparatus

Publications (1)

Publication Number Publication Date
GB1098161A true GB1098161A (en) 1968-01-10

Family

ID=10079232

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16544/65A Expired GB1098161A (en) 1965-04-20 1965-04-20 Improvements in or relating to fire detection apparatus

Country Status (1)

Country Link
GB (1) GB1098161A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0424881A2 (en) * 1989-10-23 1991-05-02 Preussag AG Feuerschutz Utilization of an air transfer system for fire control and air transfer system adapted for the purpose
GB2243475A (en) * 1990-04-26 1991-10-30 David Theodore Nels Williamson Gas and smoke alarm systems
AT395918B (en) * 1981-10-08 1993-04-26 Rietschoten En Houwens Noord W SELECTIVE GAS / SMOKE DETECTION SYSTEM
GB2277625B (en) * 1993-04-30 1996-08-28 Kidde Fire Protection Ltd Particle detecting apparatus and systems

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT395918B (en) * 1981-10-08 1993-04-26 Rietschoten En Houwens Noord W SELECTIVE GAS / SMOKE DETECTION SYSTEM
EP0424881A2 (en) * 1989-10-23 1991-05-02 Preussag AG Feuerschutz Utilization of an air transfer system for fire control and air transfer system adapted for the purpose
EP0424881A3 (en) * 1989-10-23 1991-11-27 Preussag Ag Feuerschutz Utilization of an air transfer system for fire control and air transfer system adapted for the purpose
GB2243475A (en) * 1990-04-26 1991-10-30 David Theodore Nels Williamson Gas and smoke alarm systems
GB2243475B (en) * 1990-04-26 1993-12-01 David Theodore Nels Williamson Improvements to gas and smoke alarm systems
GB2277625B (en) * 1993-04-30 1996-08-28 Kidde Fire Protection Ltd Particle detecting apparatus and systems

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