US1677079A - Zone-metering telephone system - Google Patents

Zone-metering telephone system Download PDF

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Publication number
US1677079A
US1677079A US177484A US17748427A US1677079A US 1677079 A US1677079 A US 1677079A US 177484 A US177484 A US 177484A US 17748427 A US17748427 A US 17748427A US 1677079 A US1677079 A US 1677079A
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US
United States
Prior art keywords
relay
armature
circuit
conductor
meter
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 - Lifetime
Application number
US177484A
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English (en)
Inventor
Roy F Gould
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.)
Reserve Holding Co
Original Assignee
Reserve Holding 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
Application filed by Reserve Holding Co filed Critical Reserve Holding Co
Priority to US177484A priority Critical patent/US1677079A/en
Priority to GB31548/27A priority patent/GB287515A/en
Priority to FR655295D priority patent/FR655295A/fr
Application granted granted Critical
Publication of US1677079A publication Critical patent/US1677079A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges

Definitions

  • the object of the invention is to improvev systems of this general character by pro--- viding simplified equipment common to an exchange for causing the registering operation to be effected and to, so far as possible, eliminate equipment which must be provided individual to a repeater.
  • Another object is to provide circuits for operating a booster battery meter wherein the operating margin of tie meter is considerably increased over methods formerly used.
  • Figs. 1, 2, and 3 when placed in order with the corresponding lines inalignment, represents the apparatus employed in setting up a connection between two substations located in different exchanges.
  • Fig. 4 illustrates zone meter control equipment common to an exchange and should be placed below Fig. 2.
  • the automatic equipment shown in Figs. 1, 2, and Fig. 4 is assumed to be located in one ofiice, while the equipment shown in Fig. 3 is assumed to be located in a distant oflice.
  • the lineswitch C, Fig. 1 is mechanically of the well known rotary type in which the wipers have no normal position and move in a forward direction only.
  • the code cut-oil switch is Oill a well known pawl and ratchet type which moves its wiper upon energization of its operating magnet and restores to normal under control of a releasing spring and associated release magnot. i
  • the connector H,Fig. 3 is mechanically the same as the selector D and is provided with well known circuits which have been partially showm v
  • the relay group shown in Fig. 4 is coniposed of relays of the ordinary typeused in telephone work and their circuits will be fully described hereinafter.
  • circuit changing springs within the dotted rectangle in the upper right hand corner of Fig. 4 are time controlled, and are for a purpose which will subsequently be made clear.
  • the line relay 10 of the switch C responds to the lifting of the receiver and arranges that either the rotary magnet 12 or the cut-oil relay 11 is energized according as to whether the line on which the wipers of the lineswitch are resting is engaged or idle, so that the wipers are stepped around until an idle trunk is found, say that lead ing to the selector D.
  • the cut-oti' relay ll is then operated to connect the subscribers line through to the selector 1) thereby causing the energization of line relay 17 which is followed by theenergization of release relay 18.
  • On the subscriber dialing series relay 25 and vertical magnet .20 areenergized in response to the impulses and step the wipers up to the required level.
  • the line relay 56 upon energizing, in addition to closing the circuit of relay 60, also at its armature 58 and front'contact completes a bridge across the trunk conductors S-t and 55 extending to the distant exchange. This bridge extends from trunk conductor 54. armature 61 and its front contact, through the armature of relay 66 and its resting contact, the lower winding ofelectro-polarized relay 67, contacts controlled by armature 53. right-hand winding of the retardation coil 59, and the working contact and armature 58 to trunk conductor 55.
  • the line relay of the incoming selector of the distant oliice operates and prepares the switch for operation responsive to further impulses transmitted from thesubstation A. It will be assumed that the station desired is located in an exchange local to the selector 1i and that the particular group of switches having access to the substation A are connected with via the second level of the sclector it. Under this assumption the suh scrihcr at substation A will proceed to dial the second digit of the subscriber nulnhcr causing the line relay it in the repeater it to drop back twice.
  • the series relay tit is opcrated upon the first restoration oi armature 57 and closes a direct bridge across conductors 5i and 55 independent of the operating winding of relay (5? and of the retardation coil 59.
  • This modilied circuit is maintained during each subsequent series of impulses transmitted through or repeated by the repeater R.
  • the resistance X is provided.
  • the line relay at; twice momentarily opens the bridge at its armature 58 to cause the selector l) at the distant exchange to elevate its Wipers oppo sil'c its second level of banlc contacts.
  • Linc rclayfitl also at its armature 5T transniits a like series of impulses by way of armature (ii and its working contact, conductor 74, normally closed oil normal springs 83 ot the code-cut-oli' switch COL, winding of series relay 78 and the motor magnet 8:2 to battery, causing this switch to step its wiper 86 into engagement with its second bank contact.
  • the relay 78 restores and cannot again become energized owing to the oil normal spring 83 having opened the instant the code selecting switch moved oli' normal. Therefore any subsequent. series of impulses transmitted out over the trunk is inellective so far as the code cut-oil, switch is concerned.
  • a circuit is first closed for slow 'release relay 101, which operates, at its armature 103 applies ground to the register conductor 92 but without effect so far as this connection is concerned, at its armature 102 completes a circuit for relay 105, by way of conductor 117, and the chain circuit including armatures 129, 122, 116 and 108, and at its armature 104 also completes a circuit for relay 100.
  • the relay 100 operates and breaks the circuit of relay 101'which, after an instant,
  • the rela 105 upon operating, at its armature 123 c oses a circuit for the relay 110 and a holding circuit for itself including this latter relay, so that as soon as round is removed from conductor 117, which occurs when the relay 101 deenergizes, the re- The ope 'ation of relay 105, in addition to completing the circuit just described, at its armature 106 closes a point in a pick up register circuit extending to all the repeaters of the exchange via conductor 93, and at its armature 107 opens a point in a circuit for supplying ground to out off conductors 13613S terminating in bank contacts of code cut-0E. switches associated with the various repeaters of the exchange.
  • This circuit in the case of the repeater R extends from the grounded common conductor 91, via armature 103 and its resting contact, armature 112-and its resting contact, working contact and armature 106, conductor 93, armature 52 oi the back bridge relay and its working contact, contacts controlled by armature 71, resting contact and armature 91, and the winding of pick-up relay 70] to battery and ground.
  • the relay 115 operates in series with. 111 upon the second deenergizationof relay 101, at its armature 111 unlocks and permits the restoration of relays and 110, and at its armature 116 prepares a circuit for relay 120.
  • ameter In a measured service telephone system, ameter, and a relay group common to the exchange for transmitting an impulse to prepare an operating circuit for said meter, to then transmit impulses to cause operations of the said meter and to thereafter transmit an impulse to prevent further impulses being transmitted to said meter.
  • a measured service telephone system subscribers lines, meters for said lines, a plurality of trunk lines for extending connections between said lines, normally inactive meter control mechanism common to said trunk lines for controlling the meter of a calling line, a plurality of 'cut-ofi' leads extending to said mechanism, and means associated with each trunk line for selecting any of saidleads.
  • a measured service telephone system subscribers" lines, meters for said lines, a trunk line for extending connection between any two of said lines, meter operating mechanism associated with said trunk line, a plurality of cut-ofi' leads associated with said mechanism for determining the operation of the meter, and clock controlled means for switching said cut'ofi' leads from one point to another at dilierent times of the day to Vary the control of the meters.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
US177484A 1927-03-23 1927-03-23 Zone-metering telephone system Expired - Lifetime US1677079A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US177484A US1677079A (en) 1927-03-23 1927-03-23 Zone-metering telephone system
GB31548/27A GB287515A (en) 1927-03-23 1927-11-23 Improvements in or relating to telephone systems
FR655295D FR655295A (fr) 1927-03-23 1928-03-22 Système téléphonique à comptage multiple

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US177484A US1677079A (en) 1927-03-23 1927-03-23 Zone-metering telephone system

Publications (1)

Publication Number Publication Date
US1677079A true US1677079A (en) 1928-07-10

Family

ID=22648785

Family Applications (1)

Application Number Title Priority Date Filing Date
US177484A Expired - Lifetime US1677079A (en) 1927-03-23 1927-03-23 Zone-metering telephone system

Country Status (3)

Country Link
US (1) US1677079A (fr)
FR (1) FR655295A (fr)
GB (1) GB287515A (fr)

Also Published As

Publication number Publication date
FR655295A (fr) 1929-04-17
GB287515A (en) 1929-02-25

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