GB188827A - Improvements in or relating to telephone systems - Google Patents

Improvements in or relating to telephone systems

Info

Publication number
GB188827A
GB188827A GB2325321A GB2325321A GB188827A GB 188827 A GB188827 A GB 188827A GB 2325321 A GB2325321 A GB 2325321A GB 2325321 A GB2325321 A GB 2325321A GB 188827 A GB188827 A GB 188827A
Authority
GB
United Kingdom
Prior art keywords
telephone systems
relating
relay
slow
automatic
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
GB2325321A
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.)
Automatic Electric Co
Original Assignee
Automatic Electric Co
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 to US408061A priority Critical patent/US1468078A/en
Priority to US409932A priority patent/US1505963A/en
Priority to DE1921A0035777 priority patent/DE423812C/en
Application filed by Automatic Electric Co filed Critical Automatic Electric Co
Priority to GB2325321A priority patent/GB188827A/en
Publication of GB188827A publication Critical patent/GB188827A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
    • H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
    • H04Q3/625—Arrangements in the private branch exchange
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)
  • Relay Circuits (AREA)
  • Selective Calling Equipment (AREA)
  • Monitoring And Testing Of Exchanges (AREA)

Abstract

188,827. Automatic Telephone Manufacturing Co., Ltd., (Automatic Electric Co.). Sept. 1, 1921. Drawings to Specification. Slow-acting relays.-A relay for use in automatic telephone systems is made slow to energize by means of a normally short-circuited second winding, the circuit of which is opened bv the operation of the relay.
GB2325321A 1920-09-03 1921-09-01 Improvements in or relating to telephone systems Expired GB188827A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US408061A US1468078A (en) 1920-09-03 1920-09-03 Automatic telephone system
US409932A US1505963A (en) 1920-09-13 1920-09-13 Automatic telephone system
DE1921A0035777 DE423812C (en) 1921-09-01 1921-06-29 Self-connecting telephone system in which the participants are divided into different classes depending on the traffic route intended for them
GB2325321A GB188827A (en) 1921-09-01 1921-09-01 Improvements in or relating to telephone systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2325321A GB188827A (en) 1921-09-01 1921-09-01 Improvements in or relating to telephone systems

Publications (1)

Publication Number Publication Date
GB188827A true GB188827A (en) 1922-11-23

Family

ID=10192650

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2325321A Expired GB188827A (en) 1920-09-03 1921-09-01 Improvements in or relating to telephone systems

Country Status (2)

Country Link
DE (1) DE423812C (en)
GB (1) GB188827A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE767559C (en) * 1940-08-31 1952-12-08 Mix & Genest A G Circuit arrangement for telecommunications systems, in particular telephone extension systems with dialer operation
DE863217C (en) * 1950-03-15 1953-01-15 Mix & Genest Ag Circuit arrangement for telecommunications systems, in particular telephone branch exchanges, with several classes of subscribers with different traffic authorization
DE965822C (en) * 1951-08-02 1957-06-19 Standard Elek K Ag Circuit arrangement for telephone extension systems with dialer operation

Also Published As

Publication number Publication date
DE423812C (en) 1926-01-11

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