GB190163A - Improvements in selectors for party-line telephone installations - Google Patents

Improvements in selectors for party-line telephone installations

Info

Publication number
GB190163A
GB190163A GB33466/22A GB3346622A GB190163A GB 190163 A GB190163 A GB 190163A GB 33466/22 A GB33466/22 A GB 33466/22A GB 3346622 A GB3346622 A GB 3346622A GB 190163 A GB190163 A GB 190163A
Authority
GB
United Kingdom
Prior art keywords
relay
impulses
circuit
party
slow
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
GB33466/22A
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.)
LOUIS D HAENENS
Original Assignee
LOUIS D HAENENS
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 LOUIS D HAENENS filed Critical LOUIS D HAENENS
Publication of GB190163A publication Critical patent/GB190163A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q5/00—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
    • H04Q5/18—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange with indirect connection, i.e. through subordinate switching centre
    • H04Q5/22—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange with indirect connection, i.e. through subordinate switching centre the subordinate centre not permitting interconnection of subscribers connected thereto

Landscapes

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

Abstract

190,163. Haenens, L. d'. Dec. 9, 1921, [Convention date]. Party-line systems. -- Party-line sub-stations are provided with selectors comprising a relay counting chain ior each of the two or more digits of the party-line numbers. In the equipment shown, for sub-station No. 37, the tens impulses repeated by the line relay R successively energize slow-release relays r10, r20, &c. The third relay r30 closes the circuit of a slow-to-energize relay D, but if the tens digit includes more than three impulses this circuit is opened again by relay r40 before the relay D has time to respond. If however there are only three impulses in the tens digit the relay D becomes energized and directs the units impulses over a circuit u to a second chain of slow-release relays r01, r02, &c., which are energized in succession, one at each impulse. The seventh relay r07 closes the circuit, previously prepared by relay D, of a slow-to-energize relay S, but if the units digit includes more than seven impulses this circuit is opened again by relay r08 before the relay S has time to respond If however there are only seven impulses in the units digit the relay S becomes energized and closes a bell circuit
GB33466/22A 1921-12-09 1922-12-07 Improvements in selectors for party-line telephone installations Expired GB190163A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE190163X 1921-12-09

Publications (1)

Publication Number Publication Date
GB190163A true GB190163A (en) 1923-11-29

Family

ID=3864473

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33466/22A Expired GB190163A (en) 1921-12-09 1922-12-07 Improvements in selectors for party-line telephone installations

Country Status (1)

Country Link
GB (1) GB190163A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE943173C (en) * 1951-02-09 1956-05-17 Telefunken Gmbh Circuit arrangement for relay chains

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE943173C (en) * 1951-02-09 1956-05-17 Telefunken Gmbh Circuit arrangement for relay chains

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