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US1769056A - Automatic telephone system - Google Patents

Automatic telephone system Download PDF

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Publication number
US1769056A
US1769056A US292493A US29249328A US1769056A US 1769056 A US1769056 A US 1769056A US 292493 A US292493 A US 292493A US 29249328 A US29249328 A US 29249328A US 1769056 A US1769056 A US 1769056A
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US
United States
Prior art keywords
relay
contact
circuit
impulses
earth
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
US292493A
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English (en)
Inventor
Gillings Charles
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.)
Automatic Electric Inc
Original Assignee
Automatic Electric Inc
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
Priority to DEA38439D priority Critical patent/DE427814C/de
Priority to US598239A priority patent/US1705462A/en
Priority claimed from US598239A external-priority patent/US1705462A/en
Application filed by Automatic Electric Inc filed Critical Automatic Electric Inc
Priority to US292493A priority patent/US1769056A/en
Application granted granted Critical
Publication of US1769056A publication Critical patent/US1769056A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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

Definitions

  • the present invention concerns improve merits inor relating to telephonesystems employing automatic 1 switches, and nore particularly to improvements in that type of system which employs aregisterdevice for storingup impulses and thereafter controlling the operation: of automatic switches to complete the connection. 1
  • Such registers have been largely used in connection with what'are known as revertive control systems, that. is
  • Another feature i the 1 present disclosure relates to an improvedregister and V translator for use for instance in convertlng large net-works from manual to automatic working, in which the names of themanualexchanges are retained, and for this reason the number holes of the dial are given alphabetical as wellas numerical designations and the subscriber first'dials a number of series of impulses corresponding to the first letters in the name of the exchange, usually the first three letters.
  • a registering device iscprovided adapted to respond to a plurality of series 'ofimpulses, usually'S, andtohave a separate and distinct setting position for each exchange or group of lines in. the net-- I work, so that by a suitable translating ELI":
  • the main object of the present invention which is a division of my applicatlon Serial N0. 598,239,filed November 1,1922, (issued Divided andthis application namelydJ'uiy 13 192 8; Seria1-
  • a further object is to utilize the same registering apparatus for controlling the opera- 1 tion of the switching apparatusand for coni trolling thevariable assessing apparatus.
  • Relay 18 is so designed that it can only energize when both its windings assist each other, which only occurs when the currentthrough theispeaking leads is reversed,
  • the next series of impulses thereby passes'over the same circuit to wiper 43 whence it passes over contact 56 and wiper 49 to the vertical magnet 57 of a Strowger switch SS having two directional movements
  • The'Strowger switch SS represents one of. a number, usual"- ly 8 or 9, connected with the diflerent contacts accessible to the Wipers 48'to 50, the vertical magnet responds to raise the wipers to the level corresponding to-this series of impulses on the completion of which the magnet 54 has its circuit completed as before and steps the'wiper 43 to the contact 58 so that the impulses nextieifect the opera-' tionofthe rotary magnet 59 over the wiper 50.
  • the wipers of the switch SS are thereby rotated tocertain contactsin the row.
  • the ten terminals of the distributing frames DF I, and DF II are connected to corresponding contacts on sender switches SS I and SS II respectively.
  • the ten contacts of the switches NS I to NS IV swept over by the wipers 78 to 81 are connected to the ten contacts of other sender switches SS III,- SS IV, SS V, SS VI.
  • a circuit is prepared through its contact 82 which may be. traced as follows: earth, contact 82, lead 83, common to all the code relays, contact 84, lead 85, contact 86 (Fig.
  • the impulse cams 93 and 94 are mounted on a common shaft and while the cam 93 isadapted to generate impulses correspcnding to the impulses generated by a dial switch or'impulse sender of the usual type, the cam 94 is adapted to close a circuit only between impulses. This insures that only the correct impulses are generated and that'no'circuit is completed at an unsuitable time. As soon, therefore, as the cam 94 closes contact 92, relay 87 energizes and at its con-.
  • tact 95 completes a locking circuit for itself to the lead 85, and earth on contact 82 as previously described.
  • a circuit is prepared for impulse relay 97, which energizes each time the cam 93 closes the contact 98-.
  • Relay 97"atcontact 99 thereby periodically opens a circuit across the leads 100 and 101, which leads extend via contacts 32 and 33 ( Figure 1) wipers 102,103, leads 28, 29, contacts l04, 105 to line relay of selector EI, which relay is not shown, as it forms no part of the present invention. It willthus be up preciated that each time contact 99 is opened, the vertical magnet of the selector E responds and raises the wipers one step.
  • Relay 97 at contact 106 also completes a circuit over lead 107, contacts 108 to 112 ( Figure 4) magnet 114, to battery.
  • Magnet114 of sender switch SS I therefore, responds with the vertical magnet of the selector switch E until the wiper 115 engages thev contact'116 ccnnected tothat contact 117 on the frame DF I to which the contact 65 selected by the code relay CR has been connected. hen this happens, a circuit may-be traced as follows: earth, contacts 64, 65, 117,116, wiper 115, relay 118 to battery.
  • Relay 118 energizes and at contact 112 opens the circuit of magnet 114, which thereupon comes to rest, at contact 84 disconnects earth from lead85, therei by releasing relay 87 and preventing the furnumber being determined entirely by the concompleted until contact 123 is closed which a will onlytake-place after theneXt switch nection made'at the distributingframe DF 1.
  • the selector E on being raised to the desired level, rotates automatically to find an idle line, assumed to be the line 124,125 leading through repeater R of well'known construction, and of-which only the polarized relay 126 is shownflto 'aselector E in another exchange.
  • the relay 1 138 of the selector E energizes to switch through and a momentary circuit iscompleted as follows; until the release relay 127 falls back, which it does shortly afterwards earth, battery B resistance 128, contacts 129, 130, 105,1eads 29, contacts 103, 33,1lead 101, contact 134, to relay135 and normal battery to earth.
  • the battery B has its negative pole] connected to earthiinstead of its positive pole, which is the usual convention, and,therefore, an increased current will'flow through the relay 135, thislirelay isfsoadjusted that it will not respond to normal currents o'n the xline, but will respond tothe increased currents.
  • the closure er contact 123 completes the circuit previously described and relay .121 energizes, and at ma tact 122, completes the circ'uit'betw'een.
  • This relay operates in a similar mannerto relay 118 and for that reason no further description need be given of the opcrating circuits, the selector E is operated to the re uired level as determined by the switch S8 II, and in that level hunts for an idle trunk line passing through the re eater.
  • R toza third selector E 'Repeate'r 2 and select-or E are identical'in construction vwith those previously described," and when E is taken into use, a booster impulse is transmitted and'repeated at R lay-means of relay 132 and battery B and contact 133 to cause the reenergiz'ation of relay 135.
  • Relay132 is adjusted similarly to relay 135,'then ifthe off normal *c-ontact146 is closed, the relay 147 will energize and relays 87 and 97 will operate as before-described, the number of impulses generated being now controlled by SS III.
  • the third selector. operates tothe required level and selects an idle fourth selec tor E
  • the booster impulse is then repeated 'over the lower talking conductor to cause the operation of relay 135 when the cycle is completed and the succeeding impulses are sent out in a similar manner under the con trol' ofbS II-SS- V, and SS VI, successively.
  • the connector H responds to the last two impulses and as there is no trunk hunting operation between these impulses, it is sufli-k 'cie nt toarrange that the relay 148' is some- ,what slow to pull up,ther'eby insuring that the necessary pause takes place between the transmissionof these last two series of impulses without'requiring the transmissionof aspecial boosterimpulse.
  • the relay 149 energizes and, besides performing the functions previously described "with relation to relay 118, at contact 152 connectsleads' 153 and 154 together.
  • a 'circuit is prepared as follows: earth, contact 155, lead 153, contact 152, lead 154, contact 74,wiper 43, relay42, "contacts 34, 41', lead 30, contacts 157, 158, relay 159 to battery.
  • This circuit includes 1 At 'coi1tact 162 an impulse circuit is completed which may betraced as follows: earth,
  • the stop cam 170 then closes contact 175, completing acircuit as follows: earth, contacts 175, 176, 177, relay 178 to battery.
  • Relay 17 8 energizes and at 164 opens thecircuit of magnet 163, at contact 179 closes a-locking circuit for itself to the release trunk conductor 180, and at contact 181 removes earth from the contact 182 which had maintained relay 21 energized after relay 16 had been disconnected at contacts 17 and 19.
  • Relay 21 then deenergizes and at contact 22 opens the circuit of relay 23, which, accordingly, deenergizes and frees the impulse register. The opening of contact 22 also causes the release of relay 37, which falls back and at.
  • contact 194 closes a circuit for release magnets 192, 190, and 191 of switches MDS, MS, and SS, respectively, which thus restore to normal.
  • Relay 37 at contact 193 connects earth to the lead 151 to releasethe switches NS I to NS IV.
  • the back bridge relay (not shown) of the connector II energizes and reverses current over the trunk conductors 124and 125, thereby energizing the polarized'relays' 126 of the repeaters to disconnect the relays similar to 132, and further to energize the relay 18. Its two windings have now so energized as to assist each other. Relay 18 does not energize immediately, but only when the start cam 196 has closed the contact 197. When this occurs, a
  • the meter therefore, is energized three times by the three point cam 202 when a circuit is closed by step cam 204'as follows:
  • a time alarm relay TA isprovided to prevent an impulse register being held up unduly, its circuit is completed through contact's207, 208 when relay 37 is energized.
  • Relay TA is slow to energize, but quick to restore and is so arranged that if a predetermined time has elapsed between the instant that relay 37 energizes and the subscriber commences to dial or a similar delay occurs between successive impulses, as determined by'the energization of relay 42,-a circuit will be completed from earth, through contact 209,.”relay 42, contacts 34, 41, lead 30, contacts 157, 158, relay 159 to battery.
  • Relay 159 therefore, energizes and brings about the disconnection of the register switches so that these may-be taken into use for another call.”
  • the subscriber will not then get his dial toneand can only get this by hanging up his receiver and initiatinga fresh call.
  • it is important to insure that these are not taken into use except when required.
  • trunk lines over which connections are to be extended from calling lines registering apparatus common to said trunk lines, means controlled from a calling line for setting the registering apparatus in accordance with the line in accordance with the destination of the call,registering apparatus common to a plurality of trunk lines and operable from calling lines in accordance with the destination of calls, and means for setting said'devices in accordance with the setting of the common registering apparatus.
  • trunk lines in one ofi ice over which, connections originated in such office are to be extended are to be extended
  • trunk lines over which connections from calling linesto called lines are to be extended adjustable means individual to each trunk line for controlling the assessing of a charge against a calling" subscriber using *such trunk line, and registering apparatus common to a plurality of trunk lines and arrangedtobe set over any trunk line, over a circuitpath independent of the connection extended from such trunk V ance with the location of the called line,and
  • a trunk line over which connections areto be extended means for extending a telephone connection to said trunk line and for subsequently further exs a charge against the calling line commensuratewith the location of the called line.
  • connection over, the trunk line toward a called line, registering apparatus common to said trunk and other trunk lines, means for-extending a branchconnec tion from said trunk line to the common ap paratus and for settingthecommon apparatus in accordance with the destination of a call, a charge accessing, deviceon said trunk line, and means for setting saidfidevice over said branch connection in accordance with said common registering apthe setting of paratus;

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
US292493A 1921-12-17 1928-07-13 Automatic telephone system Expired - Lifetime US1769056A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DEA38439D DE427814C (de) 1921-12-17 1922-09-15 Schaltungsanordnung fuer Fernsprechanlagen mit Waehlerbetrieb und Registern
US598239A US1705462A (en) 1921-12-17 1922-11-01 Automatic telephone system
US292493A US1769056A (en) 1921-12-17 1928-07-13 Automatic telephone system

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB1705462X 1921-12-17
US598239A US1705462A (en) 1921-12-17 1922-11-01 Automatic telephone system
US292493A US1769056A (en) 1921-12-17 1928-07-13 Automatic telephone system

Publications (1)

Publication Number Publication Date
US1769056A true US1769056A (en) 1930-07-01

Family

ID=27269845

Family Applications (1)

Application Number Title Priority Date Filing Date
US292493A Expired - Lifetime US1769056A (en) 1921-12-17 1928-07-13 Automatic telephone system

Country Status (2)

Country Link
US (1) US1769056A (de)
DE (1) DE427814C (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2603712A (en) * 1940-08-26 1952-07-15 Automatic Elect Lab Party line identification in automatic telephony

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2603712A (en) * 1940-08-26 1952-07-15 Automatic Elect Lab Party line identification in automatic telephony

Also Published As

Publication number Publication date
DE427814C (de) 1926-04-22

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