GB484308A - Improvements in automatic burglar and fire alarms - Google Patents

Improvements in automatic burglar and fire alarms

Info

Publication number
GB484308A
GB484308A GB30014/36A GB3001436A GB484308A GB 484308 A GB484308 A GB 484308A GB 30014/36 A GB30014/36 A GB 30014/36A GB 3001436 A GB3001436 A GB 3001436A GB 484308 A GB484308 A GB 484308A
Authority
GB
United Kingdom
Prior art keywords
arm
tone
lever
dial
shaft
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
GB30014/36A
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.)
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 GB484308A publication Critical patent/GB484308A/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
    • H04M11/045—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems using recorded signals, e.g. speech
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/64—Automatic arrangements for answering calls; Automatic arrangements for recording messages for absent subscribers; Arrangements for recording conversations
    • H04M1/65—Recording arrangements for recording a message from the calling party
    • H04M1/658—Means for redirecting recorded messages to other extensions or equipment

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Toys (AREA)
  • Telephone Set Structure (AREA)
GB30014/36A 1936-11-04 1936-11-04 Improvements in automatic burglar and fire alarms Expired GB484308A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB201139X 1936-11-04
GB190837X 1937-08-19

Publications (1)

Publication Number Publication Date
GB484308A true GB484308A (en) 1938-05-04

Family

ID=26253826

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30014/36A Expired GB484308A (en) 1936-11-04 1936-11-04 Improvements in automatic burglar and fire alarms

Country Status (5)

Country Link
US (1) US2161525A (es)
BE (1) BE424390A (es)
CH (1) CH201139A (es)
GB (1) GB484308A (es)
NL (1) NL61751C (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB589160A (en) * 1945-03-15 1947-06-12 Alfred Samuel Horace Picking Improvements in or relating to automatic alarm systems
FR956829A (es) * 1946-09-03 1950-02-08
GB682276A (en) * 1950-06-07 1952-11-05 Samuel Dunseith Mckellen Improvements in or relating to automatic alarm devices
US2769032A (en) * 1951-03-12 1956-10-30 Strother John Telephone alarm
US2661394A (en) * 1951-08-16 1953-12-01 Carsten J Munch Burglary and fire alarm
US2883460A (en) * 1953-07-14 1959-04-21 Anatol N Andrews Automatic transmission alarm

Also Published As

Publication number Publication date
CH201139A (de) 1938-11-15
NL61751C (es)
US2161525A (en) 1939-06-06
BE424390A (es)

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