GB316148A - An improved system for transmitting alarm signals - Google Patents

An improved system for transmitting alarm signals

Info

Publication number
GB316148A
GB316148A GB22658/29A GB2265829A GB316148A GB 316148 A GB316148 A GB 316148A GB 22658/29 A GB22658/29 A GB 22658/29A GB 2265829 A GB2265829 A GB 2265829A GB 316148 A GB316148 A GB 316148A
Authority
GB
United Kingdom
Prior art keywords
fire
subscriber
transmitted
station
police
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
GB22658/29A
Other languages
English (en)
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.)
Siemens and Halske AG
Siemens Corp
Original Assignee
Siemens and Halske AG
Siemens Corp
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 Siemens and Halske AG, Siemens Corp filed Critical Siemens and Halske AG
Publication of GB316148A publication Critical patent/GB316148A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Signal Processing (AREA)
  • Alarm Systems (AREA)
GB22658/29A 1927-12-20 1928-07-04 An improved system for transmitting alarm signals Expired GB316148A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE302678T 1927-12-20

Publications (1)

Publication Number Publication Date
GB316148A true GB316148A (en) 1930-01-06

Family

ID=31894342

Family Applications (2)

Application Number Title Priority Date Filing Date
GB22658/29A Expired GB316148A (en) 1927-12-20 1928-07-04 An improved system for transmitting alarm signals
GB19418/28A Expired GB302678A (enrdf_load_stackoverflow) 1927-12-20 1928-07-04

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB19418/28A Expired GB302678A (enrdf_load_stackoverflow) 1927-12-20 1928-07-04

Country Status (3)

Country Link
FR (1) FR652986A (enrdf_load_stackoverflow)
GB (2) GB316148A (enrdf_load_stackoverflow)
NL (1) NL41927B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6252538B1 (en) * 1996-01-25 2001-06-26 Richard J. Chignell Underground pipe locating system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6252538B1 (en) * 1996-01-25 2001-06-26 Richard J. Chignell Underground pipe locating system

Also Published As

Publication number Publication date
FR652986A (fr) 1929-03-15
NL41927B (enrdf_load_stackoverflow)
GB302678A (enrdf_load_stackoverflow) 1929-12-04

Similar Documents

Publication Publication Date Title
DK108094C (da) Overføringsanlæg til overføring af impulssignaler og den hertil hørende sender og modtager.
GB1130699A (en) Telecommunication subscriber's set
DK107877C (da) Overføringsanlæg til overføring af impulssignaler og sender og modtager til anvendelser heri.
GB316148A (en) An improved system for transmitting alarm signals
GB967643A (en) Improvements in or relating to digital message transmission systems
US3536839A (en) Answer tone detection circuit
ES336386A1 (es) Sistema de supervision para sistemas de telecomunicacion multiple por division de tiempo.
GB521139A (en) Improvements in or relating to electric signalling systems
SE313084B (enrdf_load_stackoverflow)
GB641352A (en) Improvements in or relating to teleprinter exchange systems and equipment therefor
GB1409873A (en) Alarm signals
GB461319A (en) Improvements in or relating to electric signalling apparatus
GB641888A (en) Improvements in or relating to electric signalling systems
GB996835A (en) Multi-frequency code signalling method
GB941356A (en) Revertive signalling device for teleprinters
GB932198A (en) A circuit condition indicating system
GB1153455A (en) Telecommunication Channel Control Arrangement
GB865609A (en) A safe or strongroom burglar warning system
GB393662A (en) Improvements in or relating to telegraph exchange systems
JPS52151504A (en) Alarm sending system
DK82318C (da) Impulskodemoduleret signalanlæg og sender og modtager til anlægget.
GB970141A (en) Simplex telegraph installation,particularly for ships'traffic with automatic error correction
JPS53131706A (en) Automatic telephone exchange system
GB831499A (en) Signalling system for carrier frequency telephone systems
GB208390A (en) Improvements in electrical signalling systems employing highfrequency carrier waves