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US1464078A - Selective switch - Google Patents

Selective switch Download PDF

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Publication number
US1464078A
US1464078A US409130A US40913020A US1464078A US 1464078 A US1464078 A US 1464078A US 409130 A US409130 A US 409130A US 40913020 A US40913020 A US 40913020A US 1464078 A US1464078 A US 1464078A
Authority
US
United States
Prior art keywords
relay
switch
impulses
circuit
series
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
US409130A
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English (en)
Inventor
Ottmar H Kopp
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.)
AT&T Corp
Original Assignee
Western Electric Co 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
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Priority to US409130A priority Critical patent/US1464078A/en
Priority to DEW59286D priority patent/DE401007C/de
Application granted granted Critical
Publication of US1464078A publication Critical patent/US1464078A/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

  • This invention relates to selective switches and particularly to switches of the types Vemployed in automatic and semiautomatic telephone exchange systems.
  • switches V are the transmission of'impulses whichido not trulyY represent the designation desired and theswitches are consequently; ⁇ incorrectly set.- This difficulty isfrequently encountered duc .to thesubscriber disturbing his switch anin a ccurate setting. l
  • a feature of the invention is the provision, in an arrangement where a selective switch is moved 'from position to position fbyfcurrent impulses, of means whereby, if a par-v effective to move saidswit-ch,whi1e the remainingimpu'lsesv of said Aseries cause the movement of the switch through a corre-V sponding number of positions.
  • a. subscribers telephone linelOO is shown terminating in the, brushes 102 ⁇ and 103.01v an individual line switch.
  • the individual line switchf has accessto trunksleading to districtV selector switches, l one fof vwhich is schematically illustrated by means of brushes '134 yand135 and afewother'ele- The individualswitch and the disments.
  • trict selector switch' maybe' of theftype suitable "for use injthe Well-known power drive panel type switching systems and are of the same general character as the .corresponding switches ⁇ shown inV detail-in vthe ypatent vto Stearn and Scudder, No, 1,395,977, issued ⁇ November 1,1921.
  • a register sender upon which the designa-- tions of Wanted lines are registered and which operates in accordance ufith the record received to control the selective movements ofthe switches to establish the connection'.
  • the sender mechanism may likewise be ot the same general nature as that shown and described in detail in the above-mentioned Patent No. 1,395,977, issued November il. 1921.
  • Each register ot the sender, upon which a designation is recorded, is a step-hy-step single motion rotary switch. Three o1 these registers,- 1110.y 160 and 180 are shown.
  • the register 140 is provided with tour circular banks oli terminals and tour brusheslll, 142, 1113 and 1411 eotn'ierating with their resi'i'eetive banks. ⁇
  • the register 100 is shown with three banks olf terminals with which the brushes 161, 162 and 10? cooperate.
  • Register 180 also has' three banks olf terminals and three corresponding brushes. 181 ⁇ 182 and 183.
  • the re, .ister switches 1110, and 180 are equipped with magnets 145, 1(31 and 181 ⁇ resluectiyely, which serve to ad Vance the brushes in a' sitep-by-step movement'over the terminals.
  • the character designates a control switch, the function ot 'whichis to associate the ⁇ impulse circuit sruccssirely with the several register switches.
  • the control switch cmuprises tour banks o1 terminals and four brushes 121, 122, 12B' and 121. Magnet 125 operates to more these brushes step-hy-step over their cooperatingteri'nina'ls.
  • Hc initiates the call in thc usual manner by removingr the receiver Atroni th. switch hook.
  • the individual line switch brushes 102, 10B are thereupon driven to a set of terminals 104i. 105 representing an idle district selector switch.
  • TViren the district selector switch is seized, the sequence switch'110, Whicl controls thesarne, is advanced to a cert..- position in the manner fully explained in the aliovcanentioned Patent No. 1,395,977 issued November 1. 1921.
  • relay 10S retracts and attracts its armature and magnet l 5 is operated to advance the brushes of switch 141-0 ⁇ one position.
  • Relays 109 and 112 being; slo ⁇ rto-rclease maintain their arimttures attracted duringthe brielI interruptions o't their operatingf circuits at the armature and contacts ot' relay 10S.
  • the first digit ot wanted designations is always greater than 1. Consequently, the first series corr tarins more than one impulse and the brushes ot' switch 110er@ adyanced beyond their Yfirst position termina After a sullixient interval 'tollowiimv the closure t' the line circuit at the terminatimi ot the last injipulse, the sloW-to-release relay 112 becomes dc energized and a circuit is conipleted 'trom ground, through the right hand armature ⁇ and contact et said relay, Windingy ot relay 171 brush 183 ot switch 180, terminal 187, brush 163 ot switch 160, terminal '165, brush 1414 olf switch 140 thence over the particular terminal engaced by the brush 111, contact Winding;r ot magnet 145,
  • windingr et relay 112 to battery and ⁇ ground.
  • Ylelay 1111 energizcs in this circuit, but due to its high resistance sufficient current does not How to operate ⁇ either the stepping magnet 1x15 or the rela)Y 112.
  • ARelay 11st coini'iletes a circuit from ground through its armature and contact, normal position terminal 126, brush 122, le' hand armature and contact ot relay 112. contact and armature and winding of steppingr magnet to battery and ground.
  • Magnet 125 becomes energized, attracts its armature, opens its own circuit and again deenergizes.
  • the calling subscriber proceeds to ma-- nipulate Vthe "sender 101 to transmitthe ⁇ second seriesoi: impulses according. toA the
  • the impulse. relay 108 deenergizes on the firstinterruption ol ⁇ the "line circuit, a circuitis established vfrom Vground, through its armature and back contact, leit hand armature and Contact of ieture and magnet 164 deenergizes and ad vances brushes 161, 162 and 163- one posi 'tionp lIn a similarvmanner, the 'remaining impulses of the series cause the successive advance of the brushes of switch 160.
  • relay ⁇ 108 maintains its armature attracted and relay 112 deenergizes iafter an and back contact of relay 112, .winding of relay 114, brush ⁇ 183, terminal 185, brush A'163 and the Vparticular terminalen which said winding of magnet 164, conductor 119, Ywinding of relay 112 to battery and ground; Re- ⁇ lay 114 becomes energized while ⁇ magnet '164 vand relay 112 remain inactive.
  • Relay 112 alsogcloses a circuit and lefthand armature of' ⁇ relay,112, 'brush "122, terminal 127, conductor 190', brushf162 and the particular terminal on which ⁇ said l brush is standing to ground.
  • Magnet 125 interruptslits own circuit and advances ythe Y. brushesA or' the control switch to their second position terminals.
  • lBrush 122m disengaging terminal ⁇ 127Y opensthe above-traced circuit yfor magnet-125.
  • conductor 117, brush 123, terminal' 131, windrelay impulse has Ijbeen 1 reyvsiftatei's.
  • a sender-sequenceswitch 150 is started in operation'to associate the registers in succession with a controlling mechanism, such as a set of counting relays.
  • a controlling mechanism such as a set of counting relays.
  • the :banks of terminals over vwhich the brushes 141, 161 and 181 move, may be wired in any suitable manner to the counting relays whereby the particular positionsra'ssumel bythe register switches determinethe movement of the seiective switches in establishing the connecf ⁇ tion.--After all thecontrolling functions have i is concerned more particularly 'with the setting of the register switches.
  • Th'e" ⁇ closure of contact118 completes a circuit from battery,”t ⁇ hrough thewinding 112, conductor 119, through the net H184,' brush 183, Contact 118, -to ground.
  • relay 116 is energized and. its arn'iature is attracted to maintain the circuit of relay114 open. rlhere'tore the control switch 120 does not advance 'from' its normal position in response to the deener'- gization oit relay r112 following the preliminary impulse.
  • relay 108 responds to each impulseof the series.
  • armature and front contact and right hand winding ot' relay 113 conductor 110 winding of relay 112 to battery and ground.
  • llelay 112Vbecomes energized and opens the circuit through the left hand winding ot relay 113.
  • Relay 113 remains operated by means of thecircu'it, through its right hand winding and the windingT o1 relay 112.
  • relay 108 attracts its armatui and opens the circuit through the right handwindina of relay 113 and the winding ot' relay 112.
  • Relay '112 by reason ot' its slow-to-release character maintains its armatures attracted while relay;113becomes deenerrized.
  • l-lenee the lirstimpulse ofthe series, ollowing the preliminary impulse, does not succeed in reaching thestepping'magnet145 and there-- fore the registerswitch 14.0 remains in its first position.
  • each of thev followingl impulses of the series are directed to the magnet 145 and switch 140 is driven forward from position to position inA response to each ot suchI impulses. From this point on the operation involved inf ⁇ the setting of the succeeding switches is identical wi 1th that already friren.
  • the first position of. the register switch 140 is reserved to take care of preliminary impulses. For this reason, it is necessary to avoid the use of the ordinal 1v or any other character iiivoilvirnr;- the transmission ot a single impulse, as the first digitof the designa-tion. It will be apparent that by reserving,r the first two or more positions ot switeh140 for that purpose and by making;r the necessary circuit ⁇ modiication'any desired number of preliminary impulses/may betalien care of andv an equal number of .impulses erased from' the regular series following such preliminary impulses. Accordingly the first register switch always takes a position which corresponds exactly to the number of impulses containedv in the regular series intended to set such switch ref riardless ot whether or, not the regular series is preceded by preliminary impulses.
  • a switch having a plurality of settings, means for transmitting current impulses, means operated in response tothe transmission of an impulse to move Y said switchV to its irst setting, and means responsive ,to a succeedingseries of impulses for continuing the movement of said switch ing series of impulses for continuing the.
  • a switch having a plu- Y rality of positions, means ortransmitting current impulses, means responsive to a single impulse ior, moving said switch Vtoits iii'st position, and means responsive to'a s ucceeding series oi limpulses forcontinuing the movement of said switch toga position corresponding to the numbe'roi' in said succeeding series.V y
  • astep-by-stepV switch *i having a plurality of positions, means for transmitting cuirent impulses, means responsive to an impulse ioiv stepping said switch to a position correspondingV to said impulse, and means responsive to a' succeed- W ing series of impulses for continuing the stepping movement 'of said switch to a position corresponding to the number oi inipulses in said succeeding series.
  • a switch having a plurality oi positions, an impulsercircuit and means for sending' impulses over said circuit, means responsive to a single impulse in said circuit for moving said switch to yits vfirst position, a relay and means for operating the same when the switch is moved to saidl posif tion, and means controlled by said'relay for continuing Vthe movement of said switch in response toa succeeding series lof impulses to a position corresponding to the number of impulses in said series.
  • impulses switch having a plurality of positions, means for associating said switch with the subvscribers line', means i'or sending impulses over the subscribers line, means responsive to a single impulse for moving said switch to its irst position, and means responsive to a succeeding series of impulses for continuing the movement of said switch toa position corresponding vto the number of impulses eontained in said succeeding series.
  • a switch having a plurality of positie-ns, means for sending current impulses, means responsive to a particular impulse for movingsaid switch to a position corresponding to said' impulse, and means operable when a succeeding series of impulsesare sent to render ineffective a part or the impulses oi said succeeding series and to move said switch in response to theremaining impulses of vsaid series to a posivtion corresponding to the total' number of impulses in the series. 25.
  • a switch having a pluiaiity off settings, means for sending current impulses, means responsive vto aparticular impulse ior giving ysaid switch its iirstsetting, and means operable when a succeeding series of impulses are sent to render inet'- ie-ctive Va part of said succeeding impulses i l series to a position corresponding to the total numberv of impulses in the succeeding series.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Relay Circuits (AREA)
US409130A 1920-09-09 1920-09-09 Selective switch Expired - Lifetime US1464078A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US409130A US1464078A (en) 1920-09-09 1920-09-09 Selective switch
DEW59286D DE401007C (de) 1920-09-09 1921-09-03 Schaltungsanordnung zur Unschaedlichmachung von Fehlstromstoessen in Stromstossspeichern

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US409130A US1464078A (en) 1920-09-09 1920-09-09 Selective switch

Publications (1)

Publication Number Publication Date
US1464078A true US1464078A (en) 1923-08-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
US409130A Expired - Lifetime US1464078A (en) 1920-09-09 1920-09-09 Selective switch

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Country Link
US (1) US1464078A (de)
DE (1) DE401007C (de)

Also Published As

Publication number Publication date
DE401007C (de) 1924-08-27

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