GB1328639A - Warning devices for gas appliances - Google Patents

Warning devices for gas appliances

Info

Publication number
GB1328639A
GB1328639A GB1328639DA GB1328639A GB 1328639 A GB1328639 A GB 1328639A GB 1328639D A GB1328639D A GB 1328639DA GB 1328639 A GB1328639 A GB 1328639A
Authority
GB
United Kingdom
Prior art keywords
switch
gas
alarm
heat
appliance
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
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.)
Pickup A T
WOHLTERS B
Original Assignee
Pickup A T
WOHLTERS B
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 Pickup A T, WOHLTERS B filed Critical Pickup A T
Publication of GB1328639A publication Critical patent/GB1328639A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/04—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using bimetallic elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Feeding And Controlling Fuel (AREA)

Abstract

1328639 Ignition failure alarm B WOHLTERS and A T PICKUP 19 Jan 1971 [30 April 1970] 20841/70 Heading F4T An ignition failure warning device for a gas appliance comprises an electric circuit connected by a main switch 4 to a source of direct current 3 and has heat actuable switch 6 in parallel with a visual and/or audible alarm 5, so that when the main switch 4 is closed and gas is ignited and burned by the appliance, the heat of combustion closes the heat actuable switch 6 and the current flowing to the alarm 5 is insufficient for operation thereof, while on failure of ignition the switch 6 remains open and the maximum current passes to the alarm 5 causing operation thereof. The source of direct current 3 is a battery or accumulator and the heat actuable switch 6 comprises a bi-metallic strip. The main switch 4 may be operable with a gas valve control so that the switch closes when gas is supplied to the appliance.
GB1328639D 1970-04-30 1970-04-30 Warning devices for gas appliances Expired GB1328639A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2084170 1970-04-30

Publications (1)

Publication Number Publication Date
GB1328639A true GB1328639A (en) 1973-08-30

Family

ID=10152629

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1328639D Expired GB1328639A (en) 1970-04-30 1970-04-30 Warning devices for gas appliances

Country Status (1)

Country Link
GB (1) GB1328639A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2219115A (en) * 1988-05-25 1989-11-29 Baxi Partnership Ltd Burner pilot flame indicator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2219115A (en) * 1988-05-25 1989-11-29 Baxi Partnership Ltd Burner pilot flame indicator

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees