GB467385A - Improvements in and relating to telephone installations - Google Patents

Improvements in and relating to telephone installations

Info

Publication number
GB467385A
GB467385A GB22977/36A GB2297736A GB467385A GB 467385 A GB467385 A GB 467385A GB 22977/36 A GB22977/36 A GB 22977/36A GB 2297736 A GB2297736 A GB 2297736A GB 467385 A GB467385 A GB 467385A
Authority
GB
United Kingdom
Prior art keywords
over
wire
relay
sent
repeater
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
GB22977/36A
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.)
Tenovis GmbH and Co KG
Original Assignee
Telefonbau und Normalzeit GmbH
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 Telefonbau und Normalzeit GmbH filed Critical Telefonbau und Normalzeit GmbH
Publication of GB467385A publication Critical patent/GB467385A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
    • B03B5/02—Washing granular, powdered or lumpy materials; Wet separating using shaken, pulsated or stirred beds as the principal means of separation
    • B03B5/10—Washing granular, powdered or lumpy materials; Wet separating using shaken, pulsated or stirred beds as the principal means of separation on jigs
    • B03B5/24—Constructional details of jigs, e.g. pulse control devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

467,385. Automatic exchange systems. TELEFONBAU UND NORMALZEIT AKT.- GES. Aug. 20, 1936, No. 22977. Convention date, Feb. 12. [Class 40 (iv)] In a system employing alternating current loop working over junctions, the repeaters at either end of the junction are arranged for leg working within the exchanges, impulses and other forward signals being sent over the a wire and backward signals being sent over the b wire. Upon seizure of the repeater U1, relay 1C energizes over the c wire and 1S transmits a calling impulse over the junction during the slow operating period of IU. Relays 2E, 2A, 2C respond and the last relay locks and connects up H, 3C, the latter seizing the selector. Impulses over the a wire are repeated by 1A, 1S over the junction and thence by 2E, 2A over the a wire to 3A. Upon reply of the called party, relay 3Y connects up K over the b wire and an impulse is sent over the junction during the slow operating period of L. Relays 1E, 1Y respond, connecting battery to the b wire, and on the relapse of 1E, 1X energizes and holds 1Y. The relapse of 3Y when, the called party hangs up, results in an impulse being sent during the release period of L, bringing about the release of 1X, 1Y and the removal of battery from the b wire. When the calling party hangs up, 1C falls back and an impulse is sent as before and 2A responds and shortcircuits 2C, whereupon 3C falls back and releases the selector. Relay K energizes over the b wire until the selector reaches normal, so that two impulses are sent back, the first operating 1Y, which opens the energizing circuit of 1C and the second disconnecting 1Y to render the repeater available. To prevent interference between impulses in the two directions over the junction, relay 1S opens the circuits of 1X, 1Y, and relay 2V controlled by 2A opens the b wire at the repeater U2. In a modification, relay L is such that its release period is greater than its operating period, so that a longer impulse is sent when the b wire at the repeater U2 is opened. This results in the energization of a slow-operating relay at the repeater U1 which disconnects 1X, 1Y.
GB22977/36A 1936-02-12 1936-08-20 Improvements in and relating to telephone installations Expired GB467385A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE467385X 1913-01-27

Publications (1)

Publication Number Publication Date
GB467385A true GB467385A (en) 1937-06-16

Family

ID=6540695

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22977/36A Expired GB467385A (en) 1936-02-12 1936-08-20 Improvements in and relating to telephone installations

Country Status (3)

Country Link
US (1) US2133055A (en)
FR (1) FR467385A (en)
GB (1) GB467385A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE902984C (en) * 1939-03-29 1954-02-01 Telefonbau & Normalzeit Gmbh Circuit arrangement for telephone systems with several exchanges, which are connected to one another by inductively coupled connecting lines

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2429911A (en) * 1942-04-20 1947-10-28 Automatic Elect Lab Multiexchange impulse repeating system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE902984C (en) * 1939-03-29 1954-02-01 Telefonbau & Normalzeit Gmbh Circuit arrangement for telephone systems with several exchanges, which are connected to one another by inductively coupled connecting lines

Also Published As

Publication number Publication date
US2133055A (en) 1938-10-11
FR467385A (en) 1914-06-10

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