US1699457A - Telephone system - Google Patents

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US1699457A
US1699457A US58001A US5800125A US1699457A US 1699457 A US1699457 A US 1699457A US 58001 A US58001 A US 58001A US 5800125 A US5800125 A US 5800125A US 1699457 A US1699457 A US 1699457A
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Prior art keywords
switch
wiper
relay
armature
circuit
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Tench Frank
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Automatic Electric Inc
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Automatic Electric Inc
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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

Definitions

  • FRANK TENUE OF LONDON, ENGLAND, ASSIGNOR, BY MESE ASSIGNMENTS, T0 AUTO- MATIC ELECTRIC INC., OF CHICAGO, ILLINOIS, A CORPORATION OF DELAWARE.
  • the present invention relates to telephone systems and is more particularly concerned with novel applications of automatic switches in circuit arrangements which perrangements are particularly suitable for use in connection with register translators and such use will be considered in the description which is to follow.
  • the improvement in the utility of the switches may be obtained by arranging for the switch vto be used twice where previously it was only used once or by arranging for it to perform one operation by virtue of its setting and a further operation on its return to a normal position or also by arranging for the switch to make one or more auxiliary steps after its original setting.
  • an automatic switch in which the wipers are adaptedto be connected up successively to control different operations and in which the switch is arranged to be advanced to a new position in between erent operations sofas to enable one wiper to be used twice for two different purposes.
  • an automatic switch adapted to hunt automatically under the control of' one or more wipers, after the termination of a limiting movement the switch is adapted to talre a predetermined number of additional steps whereupon the wipers previously used for controlling the hunting movement are.
  • Anofl er' feature of the invention relates to a register sender adapted to vregister wani'eil numbers and to send out trains of impulses in accordance therewith in whichl one or more of the register switches employed are adapted to be released in a plurality of stages betweenl two of which impulses adapted to be sent out.
  • a further feature of the invention is that in a resister' translator adapted to register* 'wat numbers and to send out trains The chief object impulses vin accordance therewith, a register switch is adapted to be used to record a plurality of digits in the called number, control. in accordance with one of said digits being effected while the wiper of the switch is stationaryy in the position to which it has been set, while control in accordance with another digit is effected by vthe subsequent movement ofthe switch after it has vbeen set to register this digit.
  • Still another' feature of the invention is that in a register sender adapted to' register wanted numbers and to send out trains of impulses in accordance therewith, the operating magnets of the register switcheswhich record the designation of theA wanted party control contacts in the circuit for sending out impulses, the'contacts of each magnet being rendered ineffective until they are required to send out impulses.
  • thev switches are ofthe single-level type having 25 contacts in the bank and moving always in the same direction; such switches are already yextensively employed for connecting a calling subscriber with a first numerical switch or the like.
  • One advantage ofv having the yswitches of the register translator off an exclusively rotary'type is that it allows a more compact assembly and reduces maintenance costs.
  • Fig. 1 shows a subscribers station A, the associated line switch C, and the trunlr circuit TG with which is associated the first selector D and the register selector DS.
  • Figs. 2, 3 and el represent the registertranslator, the switches of which it will be noted are all single-level switches ot the type which move in. one direction only. In the example about to be described they are all 25 point switches ci' the type generally used for connecting the calling subscribei"s line to a first numerical switch and are mechanically identical with the switch C.
  • rl'he portion. of the register translator shown in Fig. 2 comprises4 the in-put control switch ICS which has four banks and the digit registers M1, M2, M3 and M4, of which M1' has three banks, M ?and M3 have two banhs each, and M'1 has one bank.
  • M1' has three banks
  • M ?and M3 have two banhs each
  • M'1 has one bank.
  • Fig. 3 shows one of the code switches Cr ot which -four are assumed to be provided in the present system which comprises a neth work having ⁇ about or 8() exchanges. Only one ot these code switches is shown, however, in order to prevent the drawing becoming unduly complicated, since the circuits of the others are precisely similar and the method of their operation will, be at once apparent to those skilled in the art.
  • Fig. 4 shows the output control switch OCS and the impulse control switch 1S. This latter it will be seen from the iioliow? ing description is only used for cimtrolling the sending of the impulses corresponding to the exchange code, the control .of the impulses comprising the numerical digits being effected by the digit registers M4', M1, M2 and M3 onl returning to their normal position.
  • Relay 15 upon energizing, at armature 23 completes a circuit iior switching relay 14 and rotary magnet 16 in series and at armature 241 connects test wiper 21 to the junction ot switches lay 14 and rotary magnet 16.
  • armature 23 moreover earth is connected to private normal conductor 18 vin order to make' the line of substation A busy in the banlrs ot the connectors having accessthereto.
  • the line switch C now ycommences to huntl in known manner and it will be assumed that the tiret idle trunk encountered is that shown en theV drawings comprising the trunk circuit and the associated selector D and selector DS.
  • Relay 14C is no longer short circuited .and energizes in series with niagnet 16 which is not new energized, hovmvcr, owing to the high resistance of relay 14.-.
  • Relay 31 upon energizing, at armatiue 35 primaries a circuit for relay 33 and at armature 2# pletes a circuit tor slow relal 32.
  • Y Relay 32 upon energizing, at armature 86 cruinects earth to release trunl; conductor betere it has been removed at 235 so as to maintain relay let oper ⁇ f at arinaime 37 completes a circuit for switching relay 81 and magnet S2 of the reo'ster s j DS in seriesand at armature 38 connects ,ica
  • the selector D which extends as follows: earth, lower winding of relay 51, back contact andV armature 71, conductor 44, :normally closed springs controlled by zii-mat are 41, armature and its 'iront contact, wiper 88, conductor 92, multiplied contacts 1 to 6 in the bank oli wiper 300 of the switch OCS, armatures 801 and 302 and their-'back contacts in parallel, lead 91, wiper 6T, front contact and armature 63, normally closed springs controlled' by armature 39, conductor 42, armature 68 and its ba fcontact, upper winding of relay 51 to batt'. y.
  • Re lay 51 operates in this circuit and at its armature 62 completes a circuit for slow release relay 52 which also energizes so th the switch is prepared for operation ne usual manner.
  • the connection of earth to conductor 93 has the effect of energi' relays and k101, whereupon resto i circuits for the various switches are opened so that it may be possible for these switches to remain in an oil normal position.
  • rlhe register translator' now in condition to receive the impulses transmitted by the calling subscriber and with the assum1 tion made above the first 4series comprises two impulses. lil'hen this is dialled, line relay 31 ot the trunk circuit TC is momentarily deenergized twice and each time a circuit is completed as Vfollows: earth, back contact and armature 35, arn'iature 86 and front Contact, wiper 90, conductor 94, winding of relay 112, wiper 120er' the input control switch ICS and its Ylroi'it contact, winding of magnet 121 to battery.
  • magnet 121 deenergizes and advances the wipers 124, 1253, and 126 ot the first digit register M] one step so that they are moved into engage ment with the second contact in their respective banks.
  • Relay112 is made slow to release in order that it shall hold up throughout the train of impulses and on their termination releases alter a short interval and armature 114 completed a circuit over armature and its front contact for the magnet 127 of the switch ECS,
  • the succeeding digit, in this case 3, is transmittedy in a similar manner, but since wiper 120 ⁇ is now in engagement with the third contact in its bank, the impulses are transmitted to the magnet 134 of thethird digit register M3, and this accordingly advances its wipers 142 land 143 into engagement with the fourth contacts in their respective banks.
  • the input control switch CS is moved on a further step at theend ot this series of impulses in amanner similar to that previously described and is then in a position to route theiirst numerical digit to the digit register M4.
  • Relay 208 moreover, at armature 216 prepares a locking circuit for itself, at armatures 211 and 212 prepares circuits which will be described sub# sequently, and at armature 210 connects earth to lead 174 thereby completing a circuit for relay 150.
  • Relay 150 upon operating, at armature 145 opens its initial energizing circuit and locks itself up to lead 147, at the same time disconnecting earth from wipers 125 and 126 so as to prevent the possibility of any other code switches being started up subsequently, or any other shunt field relay operating.
  • Alt armatures 153, 154., 155 circuits arev completed for restoring the digit registers M1, M2, M to normal., the circuit in the case of the register 1W extending as follows: earth from the multiple contacts in the bank of wiper 124 and said wiper, front contact and ⁇ rmaure 153, back contact and armature 159, interrupter contact 122, winding of magnet 121 to battery.
  • the wipers 124, 125 and 126 are thus rotated forwards until wiper 124 -engages contact 179 which is not earthed so that the above circuit is broken.
  • Relay 150 moreover at armature 156 prepares a circuit for relay 151 and at armature 157 connects earth to lead 180.l
  • This earth has the effect of energizing relay 231 which thereupon by operating its armatures 232, 233 and 234 completes locking circuits forthe shunt field relay 208, so that this will not deenergize when its original'circuit is opened by the return of the wipers 125, 130 and 143 to normal.
  • rEhe earth on lead 180 also extends to the first Contact in the bank of wiper 306 of the output control switch OCS, and over the wiper by way of the interrupter I and armature 322 and its back contact, wiper 305, first Contact in its ⁇ bank, armature 331 and its back contact, winding of magnet 317 of the impulse control switch 18 to battery.
  • rEhe interrupter l is preferably power driven at such a speed as to produce interruptions at the rate of approximately 10 per second.
  • magnet 317 is again energized in due course and at its armature 302 opens a point in the circuit of line relay 51 of the selector D, which circuit it will be remembered extends from lead 92 over wiper 300 of the switch OCS and through armature 302 and its back contact to lead 91; consequently one impulse is transmitted to the selector D and it operates to raise its wipers one step in the well known manner.
  • this selector will then be initiated and a'succeeding switch will be taken into use and prepared for operation iii the usual manner; this hunting operation takes place while the switch IS is .restoring to normal.A As soon wiper 325 tails to find earth, the circuit is no longer completed for relay 308 and it therefore deenergizes after a short interval owing to its slow to release characteristic.
  • relay 308 completes the circuit for magnet 323 and opens ⁇ the locking circuit of relay 312.
  • Relay 312,
  • This next digitvinthe present case is one which is determined by the Afact that the' connection from the second Contact ⁇ in the bank of wiper 30d is made toterminal 1 on the lett hand side of the ⁇ I. D. F. Consequently the 'next train of impulses sent outA for reaching the desired Avenue exchange consists of one impulse only and as soon as wiper 326 reaches its third contact, to which lead 233 is connected, the sending of impulses is stopped and the switch IS is ref turned automatically toits norma-l position in the manner previously described.
  • magnet 323 is deenergized andthe switch ICS advanced a further step.
  • Earth is non iectcd over wiper 304C and its third coi i cad 332, front contact and armature 209.
  • the wipers of the switch GCS are thus advanced a further step whereupona similar circuit is completed, in this instance over armature 211 and its front contact, lead 334-, and the fifth contact in the bank of wiper 303 so that the wipers are advanced to sixth position.
  • a circuit is coinpleted from earth by way of back Contact and armature 223, chain of similar contacts indicated at 237 on the relays such as 217 associated with the'other code switches to the sixth contact in the bank of wiper 303 so that theY switch OCS is advanced to se enth position.
  • Relay 319 thereupon operates; at armature 320 prepares an alternative circuit for relay 308, at armature 321 prepares a circuit'for relay 312 and at armature 322 prepares acircuit for the two-step relay 327. Moreover, owing to the fact that wiper 300 has now larrived at its seventh contact, interrupter contact 139 is now included in the outgoing impulsing circuit over leads 91 and 92. Since wiper 131 of the switch MA1 is now resting ⁇ on its fourth contact a circuit is completed as follows: earth, fourth contact in the bank of wiper 181 and said wiper, conductor 182, seventh contact in the bank of wiper 306 and said wiper, front contact and armature 320, winding of relay 308 to battery.
  • Relay 308 therefore, operates and at armature 301 opens the shunt around armature 302 which 1s, however, without ef- A circuit is now completed feet inl this case since armature 302 will not now be operated; at armature 309 completes the circuit for relay 312; at armature 310 opens a point in the circuit of magnet'323 and at armature 311prepares a locking cir,- cuit for relay 327.
  • Relay 312 now impulses and operates'armatures 313, 314, 315, and 331 as before but in this case without effect, and at armature 310 prepares a circuit for mag net 323.
  • a branch of the above traced ycircuit from wiper 181 of switch Mt extends by way of the interruptor l, armature 322 and-its front contact, armature 328 and its back contact, upper winding olf-relay 327 to battery. Consequently when interrupter I next closes its contacts, relay 32.7 will be partially energized and will operate its light armature 329, thereby connecting earth to the other terminal of its lower winding so that' for the present this'winding is short circuited.
  • relay 327 yenergizes fully .over both windings in'series and operates its armature 328, whereupon the circuit from the interrupter is extended to wiper 305 Vand over the seventh contact in itsV bank.. lead l171, win-ding. of ⁇ magnet137 to battery.
  • l/Vhen magnet' ⁇ 323 deenergizes the switch OCS is advanced to its eighth position and a circuit may then be traced as follows: earth, fifth contact in the bank of wiper 12a and said wiper, lead 183, eighth contact lin the bank of wiper 306 and said wiper, front contact and armature 320, winding of relay 308 to battery and in parallel thereto over interruptor l, armature 322 and its front contact, armature 328 ⁇ and its back contact and upper winding of relay 327l to battery.
  • Relay 308 now operates with the previously described results while two-stepv relay 327 also operates partially as before and when fully energized transfers the above earth by way of armature 328 and itsA front contact to wiper 305 and the eighth contact in its bank, lead 168, winding of magnet 121 to battery. It will be realized that the function of the relay'327 is to guard against an imperfect iirstimpulse being sent in case the switch OCS should be moved on while the contacts of the interrupter I are closed.
  • armature 4&0 completes a locking circuit for itself to release trunk conductor 413 and at armatures 39 and L11 connects the speakingk nects earth to lead 167 ⁇ whereupon circuits are completed for advancing the digit registers M1, M2, M3 and M* to their normal po-V sitions. l n
  • the relays 150 Vand 151 are locking circuits for openedwhen wiper lellreaches its normal position and the release of relay 150 opens the circuit for relay 231 This accordingly releases and, opens the locking circuit for the'shunt held relay 208.
  • rl ⁇ he circuit for ⁇ relay 319 was opened asA soon as wiper 301 moved into its eleventh position so that this .relay is deenergzed before the switching through operation takes place. rlhus alltl'ie apparatus employed has been restored lto normal and the register translator maybe used for setting up other connections.
  • Barking is located at some distance from 'the originating exchange, and that in consequence it is necessary to send tive trains of impulses in order to selectv the Barking exchange, the code digits being 94152.
  • the switch CS therefore hunts to find these contacts in the manner previouslydescribed, and when they are reached, the shunt i'ield relay 203 is energized over the circuits traced and oper tes as before to open the hunting circuit, to prepare a Alocking circuit for itself, to connect up the wipers 203, 204, 205 of the code switch and to energize relay 150.
  • relay 150 completes a circuit for relay 231 which completes locking circuits for relay 203 and a circuit is also completed for restoring the switches M1, M2 and M3 to normal in readiness for receiving the second, third and fourth numerical digits.
  • the first numerical digit 3 is being stored on the register M4' and the transmission of the exchange selecting impulses will these registers to remain in an oli' normal position.
  • the stop relay 312 is energized over wiper 326 and the circuit just traced and operates tok shuntkthe interrupter armature 302, to effectv the re-Y turn oi the switch 1S to normal, to complete a locking circuit for itself, to prepare a circuit for magnet 323 .and to cut oti' the interrupter l.
  • the switch 1S reaches normal position the circuit of relay 303 is opened andit deenergizes thereby openingthe circuit of relay 312 which deenergizes also.
  • Magnet 206 therefore energizes ,andv operates its interrupter contact', thereupon opening its circuit, so that it then d'eenergizes and advances the wipers ⁇ 200-205, inclusive, one stepA Since the circuit over contact ,246 is now broken, it is not possible for any furhave commenced. As in the case previouf'- ther operation of magnet 206 to take place.
  • relay 217 completes a lock' ing circuit for itself to earth on wiper 141 by way of lead 147, and at armatures 218, 219 and 220 disconnects wipers 220, 201 and 202, respectively, from the winding of the shunt lfield relay and connects them to leads 249, 248 and 247 which extend to the sixth, lifth and fourth contact in the bank of wiper 304,'respectively.
  • Relay 217 also at armature 222 and its front contact shunts 'armature 209, at armature 223 removes earth from lead 250 for a purpose which willv appear subsequently, andk at armature 224 opens the locking circuit for the shunt field relay 208.
  • Relay 208 vtherefore deenergizes and at armatures 211 and 212 removes earth from leads 334 and 333 and at armature 214 again closes a point in the hunting circuit for magnet 206. It is not now possible, however, for this circuit to be closed owing to the fact that even lsupposing wiper 126 should come to rest on either itsv third or fourth contact, which may not be the case,
  • the switch OCS is prevented from advancing too rapidly in 'this case owing to the fact that earth has been removed from lead 333 at armature -212 owing to the kdeenergization of relay 208.
  • earth is extended from wiper ⁇ 304 andthe fourth contact inits bank over lead 247, front contact and armature 220, wiper 202, contact 252, terminal 5 on the left hand side of the I. D. F. 'to the corresponding ⁇ contact in the bank of wiper 326, so that it is thus determined thatthe next train of impulses shall comprise 5.
  • thewipers of the output control switch OCS are moved on in the usual manner and earth is then extended over lead 248 and 'front contact land armature 219 to wiper 201 and thence lover contact 253 to terminal 2 on the left hand side of the I. D. F. so that the next impulse train comprises two impulses.
  • this is linished wiper 304 advances one step and then extends earth over lead 249, front contact and armature 218, wiper 200, contact 254, terminal 255 on the right hand side of the I. D. F., terminal 256 on the left hand side ofthe I. D. F.
  • relay 319 isenergized and serves to change over the circuits associated with relays 308 andv 312, lso that these relays shall work in conjunction with the registers M4, M1, M2 and M3 rather than with the switch IS.
  • each case the proper digit register advances until its upper ⁇ wiper engages the contact connected to lead 167, each step of this return motion serving to send an impulse to the corresponding switch for extending 'the speaking connection, whereby as previously explained, the number of impulses sent is the complement of the number dialled b y the calling-subscriber. lhen all the numerical digits have been sent the output'con#y trol switch is moved into its eleventh position and an impulse then comes back over lead 172 and wiper 120 of the switch ICS in eighth position, and thus serves to operate switching relay 33 in the trunk circuit TC.
  • the determination of the value of the first series of impulses ' is effected by the earth connection by way of ,wiperA 304 and its first contact over lead 330, front contact and armature 215, wiper 205, contact 259 to terminal 7 on the left-hand side of the I. D. F., and thence to the corresponding contact in the bank of wiper 326.
  • Sending of impulses is eii'ected by means of armature 302 in the usual way, and when the marked contact is engaged by wiper 326 relay 312 energizes to terminate the impulse train.
  • Switch OCS is subsequently moved on one step and the second di git is then sent out, the determination' of its Value being effected over a circuit including wiper 201i which may readily be traced.
  • the switch UCS again steps and a circuit is completed in the manner previlously described for relay 217 and also for magnet 205.
  • the code switch CS is thus advanced one step and relay 217 energizes with the vpreviously described results.
  • Wipers 202 201 and 200 are now brought into use successively to control the sending of the fourth, fifth andI sixth digits in the exchange code and the switch OCS is subsequently advanced to its seventh position.
  • wiper 99 of the switch ICS and wiper 299 of the switch GCS the contacts in the banks of these wipers being multipled together in va particular manner.
  • These wipers are provided to take care of the case in which the subscriber is dialling in a slow or irregular manner, so that the register translator, in spite of having to wait for all the exchange digits before it starts sending, is likely to catch up with the subscriber. In cases of this sort it has sometimes been arranged that after the register translator has sent out all the digits received by it it is released and subsequentV digits dialled by the subscriber operate the switches direct.
  • the switch GCS When the sender has sent out the six exchange selecting digits and has started sending the thousands digit, the switch GCS will' be in seventh position., After the sending of the thousands digit is inished when relay 308 deenergizes and opens the circuit of relay 312 at armature 309, relay 812 does not deenergize if the subscrih er still delays because a circuit is new completed from earth, wiper 99, contact 188, lead 189, seventh contact in the bank of wiper 299 and said wiper, winding of relay 312 to battery; hence relay 3l2remains energized' and at armature 316y maintains the circuit of magnet 323 so that. the switch CCS cannot advance.
  • the digit 4 will be recordedon the register M1 and on its termination wiper 99 will: be advanced from the fifth to the sixth position.
  • the circuit of relay 312 is thereupon opened and it deenergizes and permits CCS to advance to eighth position in: which position the' sending of the digit 4, which will be converted to 7 then takes place.
  • Similar circuits are adapted to be completed as may be readily traced in cases where there are-pauses between other digits. Itis, of course, undesirable that the circuit ofmagnet 323 should remain closed an undue length of time, and this will be taken.y careof by arrangements of known type whichare therefore not shown. for releasing the register translator and giving the subscriber the busy tone incase he makes ay pausey of. excessive length between digits.
  • theICS has been provided with three normal positions, andthe switches M1, M2, M3., M4, OCSland.- IS with two.
  • wiper 300 of the switchy OCS is connected in the outgoing pulsing circuit, it is essential that this wiper shall not break contact in moving from one position yto the Vnext, otherwise false impulses would be sent out over the loop and the switches would be wrongly set. It will also be appreciated that though in the arrangement sho-wn the switch CS moves on-the additional step after it has controlled thesending of two digits, it would equally well be arranged to move at any other suitable time, for instance before any digits had been sent atall.
  • a director a y translator switch, wipers for positioning said switch, a sender, and means for altering the circuits of said switch after the same is positionedto enable the said4 wipers to be used for controlling said sender.
  • digit registers for registering digits of a called number
  • a translator switch means for operating said switch to a certain position depending on the particular digits registered, means for thereafter operating said switch to a. new position, and a. sender controlled by said switch in its new position to send out digits.
  • digit registers for registering digits of a called number'
  • a translator switch means for operating said ⁇ switch to a certain position depending on the particular digits registered
  • ⁇ means for thereafter operating said 'switch a. predetermined additional extent, and a sender controlled by said switch in both positions to send out digits.
  • digit registers for registering digits o-f a called number
  • a translator switch having wipers, means for starting the operation of said switch, means controlled by said wipers for stopping saidswitch in a certain position Adepending on the particular digits registered, means for then moving said wipers an additional eX- tent, and a sender controlled by said wipers in their new position to send out digits.
  • digit registers for registering digits of a called number
  • a translator switch having test wipers and digit control wipers, means for starting the operation of said switch, means controlled by said test wipers ⁇ tor stopping said switch in a cortan position depending on the particular digits registered, a sender controlled by said digit control wipers to send out a plurality of digita means for then advancing the switch to a new position, and means whereby said sender is then controlled by said test wipers in their new position to send out other digits.
  • digit registers tor registering digits ot a called number
  • a translator switch having test wipers, digit control wipers, and another wiper, means for starting the operation of said switch, means controlled by' said test wipers 'for stopping said switch in a certain posit-ion depending on the particular digits registered, a sender controlled by said digit control wipers to send out a plurality of digits, means controlled by said other wiper for advancing the switch to a new7 position, and means whereby the sender is then controlled by said test wipers and said other wiper to send out other digits.
  • digit registers means for registering the first part of a called number ⁇ on said registers, a translator switch, means 'for operating said switch in accordance with the digit combination registered, means i'or thereafter' restoring said registers to normal, said first means then functioning to register the last part of a called number' on said registers, a sender controlledby said switch to send a plurality of digits, means lor causing said restoring means to again restore said registers to normal, and means controlled by said registers while the same 'are restoring to normal the Vsecond time for sending out another plurality of digits.
  • digit registers means for registering the first part of a called number on said registers, for then restoring said registers to normal, and Jfor then registering another part of the called number thereon, an impulsing circuit, a sender, means for causing said senders to send impulses over said circuit in accordance with the first setting of said registers, and separate sending means for each register for sending impulses over said circuit in accordance with the second setting of the associated register.
  • digit registers means for registering a series of digits on said registers, 'for then restoring said registers to normal, for then registering a second series of digits thereon, and for then restoring said registers to normal a second time
  • a sender means 'for causing said sender to send impulses in accordance with the first setting of said digit registers, and means controlled by said-registers in restoring to normal the second time for sending other impulses.
  • digit registers means for registering digits of a called number on said registers, a plurality ot translators, means controlled by one of said registers for selecting a particular one 'oi said translators depending on the digit registered thereon, means controlled jointly by said registers for operating the selected translator in-accordance with the digit co nbination registered, and a sender for sensing digits in accordance with the setting of the selected translator.
  • a register for registering digits ot a called number
  • a translator' switch having a wiper
  • means including said wiper for positioning 1 said switch in accordance with digits registered on said register means controlled by said wiper for repositioning said switch under certain conditions
  • a sender for: sending digits controlled by said wiper in the first portion of the switch providing the switch is not repositioned, and controlled by said wiper in the second position of the switch providing the switch is repositioned.
  • a translator switch having test wipers and digit control wipers, means including said test wipers for positioning said wipers in accordance with a called number', a sender controlled by said digit control wipers to send out digits, means controlled by one of said digit control wipers in case the number of digits to be sent out is greater than the number of digit control wipers for moving said ywipers to a new position, and means forthen placing said sender under the control of said test wipers to cause the sender to send other digits.
  • registering apparatus arranged to be set in In combination, a translator switch,
  • a translator switch In combination, a translator switch, registering apparatus, means for operating said apparatus to register afplurality of characters in a number,y means for subsequently positioning said switch in Aaccordance with the setting of said apparatus, means for thereafter moving said switchan additional extent, and a sender controlled by said switch in both positions.
  • a translator switch having wipers, means for starting the movement of said wipers, means controlled by said wipers when they reach a position corresponding to a called number for stopping the movement of said wipers, means for then causing said wipers to be moved an additional extent, and a sender controlled by said wipers in their second position.
  • a translator switch means for initially positioning said switch in accordance with a called number, a sender controlled by said switch in its initial position to send digits, means operative after a certain number of digits have been sent for repositioning ⁇ said switch to a new position, said sender being thereafter controlled by said switch in its second position to send other digits.
  • a digit register comprising a wiper and a motor magnet, means for operating said magnet to position said wiper in accordance with a digit, a circuit interrupter, a control switch having two wipers and a two-step relay, the first control switch wiper being normally connected to said relay in series with said interrupter, means for operating said control switch wipers to connect with said register wiper and said motor magnet, respectively, to cause said two-step relay to operate to its first step when the circuit is closed by said interrupter, and to operate to its second step.

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US58001A 1925-01-06 1925-09-23 Telephone system Expired - Lifetime US1699457A (en)

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GB423/25A GB249248A (en) 1925-01-06 1925-01-06 Improvements in or relating to automatic or semi-automatic telephone systems

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US (1) US1699457A (fr)
FR (1) FR610092A (fr)
GB (1) GB249248A (fr)

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FR610092A (fr) 1926-08-30
GB249248A (en) 1926-03-25

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