GB390132A - An improved automatic electro-mechanical alarm system - Google Patents

An improved automatic electro-mechanical alarm system

Info

Publication number
GB390132A
GB390132A GB18218/31A GB1821831A GB390132A GB 390132 A GB390132 A GB 390132A GB 18218/31 A GB18218/31 A GB 18218/31A GB 1821831 A GB1821831 A GB 1821831A GB 390132 A GB390132 A GB 390132A
Authority
GB
United Kingdom
Prior art keywords
armature
contact
june
alarm system
circuit including
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
GB18218/31A
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.)
OLIVERIO GONZALEZ PALACIO Y DE LATORRE
Original Assignee
OLIVERIO GONZALEZ PALACIO Y DE LATORRE
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 OLIVERIO GONZALEZ PALACIO Y DE LATORRE filed Critical OLIVERIO GONZALEZ PALACIO Y DE LATORRE
Publication of GB390132A publication Critical patent/GB390132A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/008—Alarm setting and unsetting, i.e. arming or disarming of the security system

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Emergency Alarm Devices (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

390,132. Burglar and like alarms. MARBAN, A. R. and GONZALEZ PALACIO Y DE LATORRE, O., 207, Ic Calle de Provenza, Barcelona, Spain. June 23, 1931, No. 18218. Convention date, June 23, 1930. Void [Published under Sect. 91 of the Acts]. [Class 118 (i).] An alarm circuit including a bell 18 and a visible or other signal 181 is automatically closed by the vibration of a variable contact device 14 which increases the resistance of a circuit including an electromagnet 15 and thereby releases the armature 16 and closes the contact 17. The vibrationsensitive device 14 comprises loosely contacting members of non-rusting metal and may be embodied in any part of a room or box, or in a road or railway line. By pressing a button switch 20, the armature 16 is again attracted and the magnet circuit through the contact device 14 is closed by the contact 17<1>, the armature being thus held down when the button is released. A rheostat 21 is provided.
GB18218/31A 1930-06-23 1931-06-23 An improved automatic electro-mechanical alarm system Expired GB390132A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES390132X 1930-06-23

Publications (1)

Publication Number Publication Date
GB390132A true GB390132A (en) 1933-03-30

Family

ID=8245253

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18218/31A Expired GB390132A (en) 1930-06-23 1931-06-23 An improved automatic electro-mechanical alarm system

Country Status (1)

Country Link
GB (1) GB390132A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2260648A (en) * 1991-10-16 1993-04-21 John Mfg Ltd Sensor switch sensitive to a change in movement

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2260648A (en) * 1991-10-16 1993-04-21 John Mfg Ltd Sensor switch sensitive to a change in movement
US5321390A (en) * 1991-10-16 1994-06-14 John Manufacturing Limited Sensor switch
GB2260648B (en) * 1991-10-16 1995-05-17 John Mfg Ltd Sensor switch and a portable device sensitive to a change in movement

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