GB301753A - Improvements in or relating to electric selective arrangements for operating alarm devices - Google Patents

Improvements in or relating to electric selective arrangements for operating alarm devices

Info

Publication number
GB301753A
GB301753A GB35655/28A GB3565528A GB301753A GB 301753 A GB301753 A GB 301753A GB 35655/28 A GB35655/28 A GB 35655/28A GB 3565528 A GB3565528 A GB 3565528A GB 301753 A GB301753 A GB 301753A
Authority
GB
United Kingdom
Prior art keywords
relay
contacts
seconds
relays
dash
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
GB35655/28A
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.)
Societe Francaise Radio Electrique
Original Assignee
Societe Francaise Radio Electrique
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
Priority claimed from US320397A external-priority patent/US1967396A/en
Application filed by Societe Francaise Radio Electrique filed Critical Societe Francaise Radio Electrique
Publication of GB301753A publication Critical patent/GB301753A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L15/00—Apparatus or local circuits for transmitting or receiving dot-and-dash codes, e.g. Morse code
    • H04L15/24—Apparatus or circuits at the receiving end
    • H04L15/26—Apparatus or circuits at the receiving end operating only on reception of predetermined code signals, e.g. distress signals, party-line call signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Electric Clocks (AREA)
  • Burglar Alarm Systems (AREA)
  • Transmitters (AREA)
  • Alarm Systems (AREA)
  • Relay Circuits (AREA)
GB35655/28A 1927-12-02 1928-12-03 Improvements in or relating to electric selective arrangements for operating alarm devices Expired GB301753A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR657899T 1927-12-02
FR35676T 1928-05-22
US320397A US1967396A (en) 1927-12-02 1928-11-19 Alarm selector apparatus
US432316A US1934912A (en) 1927-12-02 1930-03-01 Alarm selector apparatus

Publications (1)

Publication Number Publication Date
GB301753A true GB301753A (en) 1929-05-23

Family

ID=27445048

Family Applications (2)

Application Number Title Priority Date Filing Date
GB35655/28A Expired GB301753A (en) 1927-12-02 1928-12-03 Improvements in or relating to electric selective arrangements for operating alarm devices
GB15637/29A Expired GB312234A (en) 1927-12-02 1929-05-18 Improvements in or relating to electric selective arrangements for operating alarm devices

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB15637/29A Expired GB312234A (en) 1927-12-02 1929-05-18 Improvements in or relating to electric selective arrangements for operating alarm devices

Country Status (4)

Country Link
US (2) US1867209A (enExample)
BE (2) BE360487A (enExample)
FR (2) FR657899A (enExample)
GB (2) GB301753A (enExample)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2424579A (en) * 1943-03-10 1947-07-29 Int Standard Electric Corp Electric signaling system
US2462875A (en) * 1944-08-15 1949-03-01 Standard Telephones Cables Ltd Automatic alarm signaling system
US2505566A (en) * 1945-07-23 1950-04-25 Bell Telephone Labor Inc Signaling system
US2487678A (en) * 1945-10-05 1949-11-08 Harold A Stickel Code selective device
US2577283A (en) * 1946-08-14 1951-12-04 Bendix Aviat Corp Code identification system
US2533765A (en) * 1947-01-29 1950-12-12 Radio Electr Soc Fr Selector apparatus for alarm signals
US2589806A (en) * 1947-07-03 1952-03-18 Bell Telephone Labor Inc Selective signaling system
US2658188A (en) * 1948-06-29 1953-11-03 Bell Telephone Labor Inc Pulse position dialing system with direct time measuring apparatus
US2708744A (en) * 1951-04-12 1955-05-17 James T Neiswinter Selective signaling system
BE520984A (enExample) * 1952-06-26 1900-01-01
US2739180A (en) * 1952-10-21 1956-03-20 American Telephone & Telegraph Message address intercommunicating telegraph system
NL105852C (enExample) * 1953-02-13
US3360777A (en) * 1964-07-16 1967-12-26 Kolm Ind Pulse receiver responsive to plural code groups having predetermined time separation

Also Published As

Publication number Publication date
FR35676E (fr) 1930-03-27
BE356113A (enExample)
US1934912A (en) 1933-11-14
BE360487A (enExample)
FR657899A (fr) 1929-05-28
US1867209A (en) 1932-07-12
GB312234A (en) 1930-05-22

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