US2744161A - Circuit arrangement for all-relay selecting equipment - Google Patents

Circuit arrangement for all-relay selecting equipment Download PDF

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Publication number
US2744161A
US2744161A US256688A US25668851A US2744161A US 2744161 A US2744161 A US 2744161A US 256688 A US256688 A US 256688A US 25668851 A US25668851 A US 25668851A US 2744161 A US2744161 A US 2744161A
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United States
Prior art keywords
relay
relays
group
circuit
contact
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Expired - Lifetime
Application number
US256688A
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English (en)
Inventor
Mehlis Arthur
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International Standard Electric Corp
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International Standard Electric Corp
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Publication date
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Publication of US2744161A publication Critical patent/US2744161A/en
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/50—Centralised arrangements for answering calls; Centralised arrangements for recording messages for absent or busy subscribers ; Centralised arrangements for recording messages
    • H04M3/51—Centralised call answering arrangements requiring operator intervention, e.g. call or contact centers for telemarketing
    • H04M3/523—Centralised call answering arrangements requiring operator intervention, e.g. call or contact centers for telemarketing with call distribution or queueing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0004—Selecting arrangements using crossbar selectors in the switching stages
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0008—Selecting arrangements using relay selectors in the switching stages

Definitions

  • the invention relates to such selecting equipment for communication systems, in particular telephone systems, as is directed to numerical selection in a certain direction, to select thereafter in non-numerical selection a circuit among those leading in this direction, and which to this end uses relays throughout.
  • group selectors are superior to mechanical switches because of the absence of mechanical trouble, and the almost complete absence of wear, and because no vibrations occur while they are directed, and no fritting noise is caused if noblemetal contacts are used.
  • the invention is based on the probelm of arranging the circuits of selecting equipment of this kind so that not only the switching performance of mechanical switches is duplicated, but even the expenses keep within economically acceptable limits, so the aforementioned merits are not bought by excessive cost.
  • this problem is solved by providing two groups 01' relays for the numerical and the non-numerical selecting operations of which the one in charge of the numerical selection consists of multicontact relays, which are designed as two-step relays, and which in their successive connection effected by the dialing pulses are energized to perform only their preliminary stroke, while the one multi-contact relay corresponding to the dialed digit is fully energized after the train of pulses has terminated.
  • the invention is described in the following with the aid of the embodiment shown in the accompanying figure. It shows a circuit arrangement of a four-wire group selector which by a train of pulses is directed to a certain position, and which among the circuits in this direction selects an idle circuit in non-numerical selection.
  • the group selector consists of ten multi-contact relays Z1 Z10 which in the following are termed tens relays, although the invention is not restricted to a decadic layout, and of ten relays E1 to E10 of a second group of relays which in the following are termed units relays, and furthermore of a seizure relay C, a pulse-repeating relay A, a starting relay VP, and two auxiliary relays U and V.
  • relay A energizes in the c-wire circuit, via contacts vII and cl, to complete a circuit for relay C via the c-wire, winding of relay C, contact all, and resistor W1.
  • Relay C operates and by means of contact cl interrupts the operating circuit of relay A.
  • Relay A holds on with its windings AH and A111 in the loop circuit via the talking wires a and b.
  • Energization of relay C effects the energization of the auxiliary relay V by means of contact cIlI. Via contact c111 and winding of relay U, an operating circuit for the units relays E1 to E10 is prepared.
  • relay V After relay V has energized, the capacitor C1 is charged via cIII, C1, vlV, aIV, W3.
  • relay A restores pulsewise in accordance with the dialed digit.
  • the capacitor C1 discharges via vlV, alV, Z1(l), so the tens relay Z1 energizes in its pre-stage and closes its pro-pull contact zlvlz.
  • the tens relay Z1 holds itself via the latter contact in the circuit:
  • the starting relay VP also energizes and with its contact vpl shorts the relay U, but does not start any other action for the time being.
  • the capacitor C1 is charged anew, and when relay A restores, it discharges via rectifier G12 and relay Z2 (not shown) which pulls up and in turn closes its pre-pull contact z2vh (also not shown).
  • the ectifier Gll prevents the branching off of part of the discharge circuit.
  • Relay Z3 (not shown) thus pulls up and prepares relay Z4, while relay Z2 falls back. This repeats in accordance with the dialed digit, until the last pulse of the train has been received. The tens relay pulling up last then remains energized.
  • the relay V is shorted pulse- Wise via contacts alll, vpVl, but, although it does not fall back then, it restores after the train of pulses has passed and the short-circuit persists for a longer time.
  • Relay Z1 is, as mentioned above, a multi-contact relay which in the assumed case has 44- contacts, of which one set of four contacts (zll-zllV) is required for each connected circuit (a-, b-, c-, d-wires), so a total of 40 contacts is provided for 10 circuits in the direction assigned to the tens relay Z1 (for instance, level 1), while the remaining four contacts are used for control purposes, or set aside for purposes of such kind.
  • relay VP holds over for a short time after the tens relay has pulled up fully, all of the units relays E1-E10 are connected via contacts vp (of which only vpll, vplll, vpIV, and vpV are shown), to the outgoing ten test wires c of the selected direction, which wires have been connected-through by the tens relay Z1. Those units relays will pull up which are connected to idle control Wires. Since however, the contacts 21V, (22V, 23V, etc., cut oil the following relays of the chain, the only units relay which remains on, among those which have pulled up, is the foremost one in the chain. Let us assume that relay E1 has pulled up because the first circuit of the selected direction was idle.
  • relay El With its contact elV, relay El cuts off the following relays E2 to E19, bridges the contact vpll with contact 211V, and, by means of its contacts e1- @1111, connects through the control wire a and the talking wires a and b.
  • rectifier units are provided in series with the contacts vp at the relays E2 to E10.
  • relay U pulls up in the testing circuit. With its contacts uIII and uIV, it cuts the pulse-repeating relay A from the talking wires; with contact 1.1V it introduces the resistor W5 into the holding circuit of relay Z1 to reduce the current flow; and with contact 1411 it removes the ground from relay V. Contact all prevents a short-circuit of relay C.
  • the release of the switch takes place when the outgoing c-wire loses its potential so relay U restores.
  • the seizure relay C is short-circuited by 111 and all and brings the selector circuit to normal after it has restored.
  • a first group of multi-contact relays for each group of outgoing lines, a second group of multi-contact relays, one relay for each line of the outgoing groups, means controlled over the incoming line for operating the relay of the first group associated with the desired numerical group of outgoing lines, a test circuit closed thereupon for the winding of a relay of the second group associated with an idle outgoing line in the desired group of outgoing lines, a circuit completed thereupon between the last mentioned line and the incoming line over contacts of the operated relays of the first and second groups, the relays of said first group of relays being two-step relays, the means controlled over the incoming line being responsive to dialing pulses and causing one after the other of the relays of the first group to perform the first step, and means operative upon the performance of the first step by the last relay responding to the final dialing pulse for causing said last relay to perform the second step.
  • a first group of multi-contact relays for each group of outgoing lines, a second group of multi-contact relays, one for each line of the outgoing groups, a starting relay, means controlled over the incoming lines for operating the relay of the desired numerical group, a test circuit closed thereupon for a relay of the second group corresponding to an idle outgoing line in the desired group of outgoing lines, and a circuit completed thereupon between the last-mentioned line and the incoming line over contacts of the operated relays of the first and second groups, the test circuit including the winding of a relay of the second group, a contact of the starting relay, a contact of a relay of the first group, and a test conductor associated with said idle outgoing line.
  • relays of the first group are two-step relays, further comprising a circuit for operating the starting relay upon the performance of the first step by the first relay of the first group.
  • relays of the first group are two-step relays, further comprising circuits for maintaining the starting relay operated from the performance of the first step by the first relay in the first group until after the performance of the second step by the last relay to operate in the first group.
  • test circuit has multiple branches, each branch including a winding of a relay of the second group, said branches being connected to said test circuit in a predetermined order, each branch being connected to the juncture of said test circuit and the next preceding branch through a contact of the relay whose winding is included in said next preceding branch.
  • a first group of multi-contact two-step relays for each group of outgoing lines, a second group of multi-contact relays, one for each line of the outgoing groups, a pulse relay responding to dialing pulses sent over the incoming line, a condenser charged under the control of said pulse relay circuits jointly controlled by the pulse relay for operating the relays of the first group one after the other to perform the first step, means responsive to the last dialing pulse for causing the last operated relay of the first group to perform the second step, a test circuit closed thereupon for a relay of the second group corresponding to an idle outgoing line in the desired group, and a circuit completed thereupon between the last mentioned line and the incoming line over contacts of the operated relays of the first and second groups.
  • test circuit includes all of the windings of the relays of the second group connected in parallel, and means responsive to the operation of one of said relays for disconnecting the others of said relays from the test circuit and thus causing their release.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Business, Economics & Management (AREA)
  • Marketing (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Exchange Systems With Centralized Control (AREA)
US256688A 1950-11-18 1951-11-16 Circuit arrangement for all-relay selecting equipment Expired - Lifetime US2744161A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE297628X 1950-11-18
DEM9122A DE876255C (de) 1950-11-18 1951-04-08 Schaltungsanordnung fuer einen aus Zehner- und Einerrelais gebildeten Leitungswaehlschalter
DE2705743X 1951-06-30
DEM13941A DE926736C (de) 1950-11-18 1952-05-03 Schaltungsanordnung fuer eine folgerichtige Abfertigung von zeitlich beliebig eintreffenden Vorgaengen

Publications (1)

Publication Number Publication Date
US2744161A true US2744161A (en) 1956-05-01

Family

ID=32303527

Family Applications (5)

Application Number Title Priority Date Filing Date
US2735895D Expired - Lifetime US2735895A (en) 1950-11-18 Yollenschier
US256688A Expired - Lifetime US2744161A (en) 1950-11-18 1951-11-16 Circuit arrangement for all-relay selecting equipment
US280336A Expired - Lifetime US2719880A (en) 1950-11-18 1952-04-03 Circuit arrangement for all-relay connector switch composed of tens and units relays
US295913A Expired - Lifetime US2705743A (en) 1950-11-18 1952-06-27 All-relay selector with double-function relay chain circuit arrangement for relay systems
US351994A Expired - Lifetime US2860188A (en) 1950-11-18 1953-04-29 Circuit arrangement for logically handling procedures which arrive at any time

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US2735895D Expired - Lifetime US2735895A (en) 1950-11-18 Yollenschier

Family Applications After (3)

Application Number Title Priority Date Filing Date
US280336A Expired - Lifetime US2719880A (en) 1950-11-18 1952-04-03 Circuit arrangement for all-relay connector switch composed of tens and units relays
US295913A Expired - Lifetime US2705743A (en) 1950-11-18 1952-06-27 All-relay selector with double-function relay chain circuit arrangement for relay systems
US351994A Expired - Lifetime US2860188A (en) 1950-11-18 1953-04-29 Circuit arrangement for logically handling procedures which arrive at any time

Country Status (6)

Country Link
US (5) US2744161A (US06486227-20021126-C00005.png)
BE (2) BE537166A (US06486227-20021126-C00005.png)
CH (6) CH314508A (US06486227-20021126-C00005.png)
DE (2) DE876255C (US06486227-20021126-C00005.png)
FR (14) FR1054105A (US06486227-20021126-C00005.png)
NL (4) NL90340C (US06486227-20021126-C00005.png)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1133585A (fr) * 1954-09-01 1957-03-28 Constr Telephoniques Perfectionnements aux systèmes téléphoniques
US2871418A (en) * 1955-03-09 1959-01-27 North Electric Co Automatic telephone system
US2972683A (en) * 1957-07-24 1961-02-21 Bell Telephone Labor Inc Electrical circuits for communication networks
DE1047256B (de) * 1957-10-29 1958-12-24 Arnstadt Fernmeldewerk Schaltungsanordnung fuer aus Zehner- und Einerrelais bestehende Leitungswaehlschalter fuer Fernmeldeanlagen, insbesondere Fernsprechanlagen
NL237886A (US06486227-20021126-C00005.png) * 1959-04-07
EP1205263B1 (en) 1997-03-01 2003-12-17 United Wire Limited Method of repairing of a filtering screen and a support frame thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2279531A (en) * 1940-07-18 1942-04-14 Kellogg Switchboard & Supply Automatic telephone system
US2456169A (en) * 1946-01-12 1948-12-14 Kellogg Switehboard And Supply Electromagnetic counting device

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1695908A (en) * 1928-12-18 Supervisory control system
US1421864A (en) * 1915-08-12 1922-07-04 Turner Hubert Sydney Telephony
US1269903A (en) * 1916-11-22 1918-06-18 Relay Automatic Telephone Co Means for connecting electric lines.
US2583014A (en) * 1942-06-12 1952-01-22 Int Standard Electric Corp Automatic control of final selectors
US2478453A (en) * 1944-01-24 1949-08-09 Kellogg Switchboard & Supply Code-call system
DE856624C (de) * 1945-12-14 1952-11-24 Erik Gunnar Valfrid Erlandsson Schaltungsanordnung fuer Fernmeldeanlagen mit Waehlerbetrieb, insbesondere fuer Fernsprechanlagen
US2535764A (en) * 1947-01-08 1950-12-26 Automatic Elect Lab Relay automatic telephone system
US2541624A (en) * 1947-07-02 1951-02-13 Automatic Elect Lab Automatic telephone system-trunk selection
US2552792A (en) * 1947-10-18 1951-05-15 Automatic Elect Lab Telephone system
US2574944A (en) * 1947-12-10 1951-11-13 Automatic Elect Lab All relay automatic telephone system trunk selection
US2562100A (en) * 1948-11-17 1951-07-24 Bell Telephone Labor Inc Coordinate selecting and lock-out circuit
DE825855C (de) * 1949-06-16 1951-12-20 Mix & Genest A G Schaltungsanordnung zum Speichern von Anrufen in Fernsprechanlagen
US2578701A (en) * 1949-09-15 1951-12-18 Bell Telephone Labor Inc Coordinate selecting and lockout circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2279531A (en) * 1940-07-18 1942-04-14 Kellogg Switchboard & Supply Automatic telephone system
US2456169A (en) * 1946-01-12 1948-12-14 Kellogg Switehboard And Supply Electromagnetic counting device

Also Published As

Publication number Publication date
FR67465E (fr) 1958-03-13
CH342612A (de) 1959-11-30
DE926736C (de) 1955-04-25
CH324915A (de) 1957-10-15
FR66103E (fr) 1956-05-16
US2860188A (en) 1958-11-11
FR68408E (fr) 1958-04-30
US2705743A (en) 1955-04-05
CH318093A (de) 1956-12-15
US2735895A (en) 1956-02-21
NL168651B (nl)
US2719880A (en) 1955-10-04
FR64104E (fr) 1955-10-21
FR66164E (fr) 1956-05-17
BE537166A (US06486227-20021126-C00005.png)
BE510496A (US06486227-20021126-C00005.png)
NL178038B (nl)
FR65379E (fr) 1956-02-09
FR64951E (fr) 1955-12-15
NL90340C (US06486227-20021126-C00005.png)
DE876255C (de) 1953-05-11
FR1054105A (fr) 1954-02-08
FR65372E (fr) 1956-02-09
FR65234E (fr) 1956-02-07
FR65373E (fr) 1956-02-09
CH297628A (de) 1954-03-31
CH339258A (de) 1959-06-30
CH314508A (de) 1956-06-15
FR66104E (fr) 1956-05-16
FR66163E (fr) 1956-05-17
FR66157E (fr) 1956-05-17
NL79667C (US06486227-20021126-C00005.png)

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