GB235187A - Improvements in burglar and like alarms - Google Patents

Improvements in burglar and like alarms

Info

Publication number
GB235187A
GB235187A GB14327/25A GB1432725A GB235187A GB 235187 A GB235187 A GB 235187A GB 14327/25 A GB14327/25 A GB 14327/25A GB 1432725 A GB1432725 A GB 1432725A GB 235187 A GB235187 A GB 235187A
Authority
GB
United Kingdom
Prior art keywords
armature
bell
contacts
closed
burglar
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
GB14327/25A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB235187A publication Critical patent/GB235187A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K1/00—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs
    • G10K1/06—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs the resonating devices having the shape of a bell, plate, rod, or tube
    • G10K1/062—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs the resonating devices having the shape of a bell, plate, rod, or tube electrically operated
    • G10K1/063—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs the resonating devices having the shape of a bell, plate, rod, or tube electrically operated the sounding member being a bell
    • G10K1/064—Operating or striking mechanisms therefor

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Electromechanical Clocks (AREA)

Abstract

235,187. Gould, R. H. June 7, 1924, [Convention date]. Bell-operating mechanism, electric.-Relates to burglar and like alarms for indicating at a distance an occurence such as the opening of a safe-door. The switch 6 having been closed, the bell armature 4 is adjusted into a position of unstable equilibrium, with the contacts 14, 20 closed and the contacts 13, 19 open. Current flows continuously through the electromagnet 3, and the armature remains at rest so long as no interference with the circuit takes place. If, however, the current is either diminished or increased, the armature 4 is set in vibration and the bell rings. The adjustment of the armature is effected by means of an eccentric 21, normally held away from the hammer 23 by a spring.
GB14327/25A 1924-06-07 1925-06-02 Improvements in burglar and like alarms Expired GB235187A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA235187X 1924-06-07

Publications (1)

Publication Number Publication Date
GB235187A true GB235187A (en) 1926-06-03

Family

ID=25560198

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14327/25A Expired GB235187A (en) 1924-06-07 1925-06-02 Improvements in burglar and like alarms

Country Status (1)

Country Link
GB (1) GB235187A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2786992A (en) * 1955-08-10 1957-03-26 Freundt Edmund John Closed-circuit electric alarm system
US5629146A (en) * 1988-10-28 1997-05-13 Ferring Ab Method for detection of human papillomavirus (HPV) for diagnostic purposes
WO2010099217A1 (en) 2009-02-25 2010-09-02 Braincells, Inc. Modulation of neurogenesis using d-cycloserine combinations
EP2258357A2 (en) 2005-08-26 2010-12-08 Braincells, Inc. Neurogenesis with acetylcholinesterase inhibitor
EP2275096A2 (en) 2005-08-26 2011-01-19 Braincells, Inc. Neurogenesis via modulation of the muscarinic receptors
EP2314289A1 (en) 2005-10-31 2011-04-27 Braincells, Inc. Gaba receptor mediated modulation of neurogenesis
WO2011091033A1 (en) 2010-01-20 2011-07-28 Braincells, Inc. Modulation of neurogenesis by ppar agents
EP2377530A2 (en) 2005-10-21 2011-10-19 Braincells, Inc. Modulation of neurogenesis by PDE inhibition
EP2377531A2 (en) 2006-05-09 2011-10-19 Braincells, Inc. Neurogenesis by modulating angiotensin
WO2013106547A1 (en) 2012-01-10 2013-07-18 President And Fellows Of Harvard College Beta-cell replication promoting compounds and methods of their use

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2786992A (en) * 1955-08-10 1957-03-26 Freundt Edmund John Closed-circuit electric alarm system
US5629146A (en) * 1988-10-28 1997-05-13 Ferring Ab Method for detection of human papillomavirus (HPV) for diagnostic purposes
EP2258357A2 (en) 2005-08-26 2010-12-08 Braincells, Inc. Neurogenesis with acetylcholinesterase inhibitor
EP2258359A2 (en) 2005-08-26 2010-12-08 Braincells, Inc. Neurogenesis by muscarinic receptor modulation with sabcomelin
EP2275096A2 (en) 2005-08-26 2011-01-19 Braincells, Inc. Neurogenesis via modulation of the muscarinic receptors
EP2275095A2 (en) 2005-08-26 2011-01-19 Braincells, Inc. Neurogenesis by muscarinic receptor modulation
EP2377530A2 (en) 2005-10-21 2011-10-19 Braincells, Inc. Modulation of neurogenesis by PDE inhibition
EP2314289A1 (en) 2005-10-31 2011-04-27 Braincells, Inc. Gaba receptor mediated modulation of neurogenesis
EP2377531A2 (en) 2006-05-09 2011-10-19 Braincells, Inc. Neurogenesis by modulating angiotensin
WO2010099217A1 (en) 2009-02-25 2010-09-02 Braincells, Inc. Modulation of neurogenesis using d-cycloserine combinations
WO2011091033A1 (en) 2010-01-20 2011-07-28 Braincells, Inc. Modulation of neurogenesis by ppar agents
WO2013106547A1 (en) 2012-01-10 2013-07-18 President And Fellows Of Harvard College Beta-cell replication promoting compounds and methods of their use

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