GB317531A - Improvements in or relating to telephone systems - Google Patents

Improvements in or relating to telephone systems

Info

Publication number
GB317531A
GB317531A GB2177229A GB2177229A GB317531A GB 317531 A GB317531 A GB 317531A GB 2177229 A GB2177229 A GB 2177229A GB 2177229 A GB2177229 A GB 2177229A GB 317531 A GB317531 A GB 317531A
Authority
GB
United Kingdom
Prior art keywords
relating
relay
telephone systems
final selector
speaking circuit
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
GB2177229A
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.)
CHARLES HERBERT EVANS
Automatic Telephone Manufacturing Co Ltd
Original Assignee
CHARLES HERBERT EVANS
Automatic Telephone Manufacturing Co Ltd
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 CHARLES HERBERT EVANS, Automatic Telephone Manufacturing Co Ltd filed Critical CHARLES HERBERT EVANS
Priority to GB2177229A priority Critical patent/GB317531A/en
Publication of GB317531A publication Critical patent/GB317531A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Devices For Supply Of Signal Current (AREA)

Abstract

317,531. Automatic Telephone Manufacturing Co., Ltd., Gillings, C., and Evans, C. H. April 19, 1928. Divided application. Automatic exchange systems.-The speaking circuit from a final selector switch is completed through operated contacts of the cut-off relay. The circuits C1, C2, P from the final selector are connected to the wipers of the outgoing line switch. When an incoming call is connected, earth on P operates K to disconnect the line relay L and connect C1, C2, to L1, L2 to complete the ringing and speaking circuit.
GB2177229A 1928-04-19 1928-04-19 Improvements in or relating to telephone systems Expired GB317531A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2177229A GB317531A (en) 1928-04-19 1928-04-19 Improvements in or relating to telephone systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2177229A GB317531A (en) 1928-04-19 1928-04-19 Improvements in or relating to telephone systems

Publications (1)

Publication Number Publication Date
GB317531A true GB317531A (en) 1929-08-19

Family

ID=10168524

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2177229A Expired GB317531A (en) 1928-04-19 1928-04-19 Improvements in or relating to telephone systems

Country Status (1)

Country Link
GB (1) GB317531A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11777189B2 (en) 2019-10-14 2023-10-03 Schott Ag Header for a package including an electronic component for radio frequency signal transmission

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11777189B2 (en) 2019-10-14 2023-10-03 Schott Ag Header for a package including an electronic component for radio frequency signal transmission

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