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
GB1183324A
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Individual
Original Assignee
Individual
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Publication date
Application filed by IndividualfiledCriticalIndividual
Priority to GB1183324ApriorityCriticalpatent/GB227700A/en
Publication of GB227700ApublicationCriticalpatent/GB227700A/en
G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
G08B17/00—Fire alarms; Alarms responsive to explosion
G08B17/04—Hydraulic or pneumatic actuation of the alarm, e.g. by change of fluid pressure
Landscapes
Physics & Mathematics
(AREA)
Fluid Mechanics
(AREA)
Business, Economics & Management
(AREA)
Emergency Management
(AREA)
General Physics & Mathematics
(AREA)
Fire-Detection Mechanisms
(AREA)
Abstract
227,700. Ameglio, P. May 13,1924. Alarms operated by ex. pansion of gases.-In an electric fire-alarm, of the type in which the expansion of air in a closed chamber 1 deflects a diaphragm in a socket 3, thus actuating, through a toothed quadrant and pinion, a pointer 10 to close an electric circuit, the alarm is given at any predetermined temperature by means of a second pointer 15, which is set at the required graduation and is provided with a contact to co-operate with a contact on the pointer 10. A rod resting on the diaphragm transmits movement to the toothed gearing.
GB1183324A1924-05-131924-05-13Electro-thermic fire alarm
ExpiredGB227700A
(en)
Thermoelectric device suitable to indicate the safety limit of temperature in a particular environment (Machine-translation by Google Translate, not legally binding)
Thermoelectric indicator sensitive to the rapidity of increased temperature and that works according to a precise fixed and regulated thermal level, especially for fire installations. (Machine-translation by Google Translate, not legally binding)