GB259229A - Improvements relating to thermal devices for operating fire alarms or extinguishers - Google Patents

Improvements relating to thermal devices for operating fire alarms or extinguishers

Info

Publication number
GB259229A
GB259229A GB24203/26A GB2420326A GB259229A GB 259229 A GB259229 A GB 259229A GB 24203/26 A GB24203/26 A GB 24203/26A GB 2420326 A GB2420326 A GB 2420326A GB 259229 A GB259229 A GB 259229A
Authority
GB
United Kingdom
Prior art keywords
contact
bouillon
temperature
extinguishers
spiral
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
GB24203/26A
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.)
JEAN MARIE FRANCOIS BOUILLON
YVES BOUILLON
Original Assignee
JEAN MARIE FRANCOIS BOUILLON
YVES BOUILLON
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 JEAN MARIE FRANCOIS BOUILLON, YVES BOUILLON filed Critical JEAN MARIE FRANCOIS BOUILLON
Publication of GB259229A publication Critical patent/GB259229A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K3/00—Thermometers giving results other than momentary value of temperature
    • G01K3/08—Thermometers giving results other than momentary value of temperature giving differences of values; giving differentiated values
    • G01K3/10—Thermometers giving results other than momentary value of temperature giving differences of values; giving differentiated values in respect of time, e.g. reacting only to a quick change of temperature
    • G01K3/12—Thermometers giving results other than momentary value of temperature giving differences of values; giving differentiated values in respect of time, e.g. reacting only to a quick change of temperature based upon expansion or contraction of materials

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Thermally Actuated Switches (AREA)

Abstract

259,229. Bouillon, Y., and Bouillon, J. M. F., (trading as Etablissements Bouillon FrÛres). Oct. 2, 1925, [Convention date]. Thermal switches.-A thermal switch for use in firealarms or fire-extinguishing apparatus and arranged to function whether the rise in temperature is sudden, or gradual up to a predetermined limit, comprises two coiled bimetallic elements 3, 4 carrying respectively contacts 5, 5a and insulated from one another by a block 13. The spiral 4 has a smaller section than the spiral 3, so that on rapid heating the contact 5<a> overtakes the contact 5, closing a circuit through the spirals and terminals connected to them. On slow heating the spirals remain, parallel until the contact 5 reaches a contact 10, when a circuit is closed through the casing 1. The contact 10 is camshaped and is mounted on a rotatable cover for the casing 1, rotation of the cover varying the temperature at which the switch will function. A temperature scale is provided.
GB24203/26A 1925-10-02 1926-09-30 Improvements relating to thermal devices for operating fire alarms or extinguishers Expired GB259229A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR259229X 1925-10-02

Publications (1)

Publication Number Publication Date
GB259229A true GB259229A (en) 1927-03-24

Family

ID=8884881

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24203/26A Expired GB259229A (en) 1925-10-02 1926-09-30 Improvements relating to thermal devices for operating fire alarms or extinguishers

Country Status (1)

Country Link
GB (1) GB259229A (en)

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