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US2235006A - Teleprinting system - Google Patents

Teleprinting system Download PDF

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Publication number
US2235006A
US2235006A US183924A US18392438A US2235006A US 2235006 A US2235006 A US 2235006A US 183924 A US183924 A US 183924A US 18392438 A US18392438 A US 18392438A US 2235006 A US2235006 A US 2235006A
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United States
Prior art keywords
relay
contact
wiper
contacts
ground
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US183924A
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English (en)
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Barth Heinrich
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Individual
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/14—Charging, metering or billing arrangements for data wireline or wireless communications
    • H04L12/1453—Methods or systems for payment or settlement of the charges for data transmission involving significant interaction with the data transmission network
    • H04L12/1482—Methods or systems for payment or settlement of the charges for data transmission involving significant interaction with the data transmission network involving use of telephony infrastructure for billing for the transport of data, e.g. call detail record [CDR] or intelligent network infrastructure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/14—Charging, metering or billing arrangements for data wireline or wireless communications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/14—Charging, metering or billing arrangements for data wireline or wireless communications
    • H04L12/1432—Metric aspects
    • H04L12/1439—Metric aspects time-based
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/14—Charging, metering or billing arrangements for data wireline or wireless communications
    • H04L12/1485—Tariff-related aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/04—Recording calls, or communications in printed, perforated or other permanent form

Definitions

  • Each such current impulse signifies a ⁇ tariff unit.
  • a special characteristic feature of such an arrangement is that this is in part located in the exchange and in part associated with the subscribers station. Arrangements of this kind have the disadvantage that the indications will disappear in default of means for recording them.
  • a solution of the said problemi is attained by means of a device connected in parallel with the integrating meter and which does not become eifective until the teleprinting call becomes chargeable, and which then receives current impulses from the time Zone meter, thus controlling stepping switches.
  • the problem now is, -to convert the stored impulses into telegraph signals in order that such current combination may be able to operate the subscribers telegraph apparatus in a manner to produce printed characters.
  • the storage devices are joined to a converting device which in the case of digit 5, for instance, acts to produce the telegraph sig- 1( nals necessary to represent this digit.
  • the telegraph signals thus produced-in practice ahumber thereof will be concerned-are now conveyed one after another to the calling subscriber after the junction line has been disconnected. They cause his teleprinting machine to respond, which prints in readable characters the indication that informs him of the fee or other particulars.
  • communications not subject to variation may be transmitted 2O paratus in public teleprinting systems in like manner to telephone stations.
  • teleprinting systems on a principle similar to that involved in automatic telephone systems have been devised inter alia.
  • a teleprinting connection is set up by impulse action, the subscriber manipulating a dial of the teleprinting station.
  • the fees due on such teleprinting connections are automatically calculated by the so-called time Zone meter of the teleprinting exchange.
  • An indication oi the fee is by the requisite number or" current Yimpulses transmitted from the time zone meter to a fee meter allotted to the calling set of the teleprinting station, each such impulse corresponding to a tarii unit. In the case of wrong connections or errors no charge is made, provided that the connection is released shortly thereafter.
  • the invention described hereafter is concerned with a self-acting fee-indicating device for teleprinter stations of automatic teleprinting systems.
  • the indication transmitted to a subscriber of such system is in the nature of a printed communication received by him immediately after Ythe last chargeable call and from a device disposed in the exchange, whence the communication is conveyed over the teleprinting line and the start-stop printer of his station.
  • an indication as to the day, hour and minute may be transmitted. These indications are received only by the station from which the call has been initiated and are not transmitted until the connection is released. It will be convenient also to have the fee indication preceded or followed by ythe name of the sending station or by any reiterative communication of invariable wording.
  • An indication thus composed may read as follows:
  • the communication relating to time and fee may be transmitted with the aid of the telegraph signals usually employed in teleprinting methods, that is, by the emission of five impulses which are of the same length and are characterized in a well known manner by a certain combination of Current and No current, that is, marking impulses and so-called spacing impulses.
  • An essential feature of the invention is the fact that contrarily to the fee indication eiective in telephone systems by means of electro-mechanically acting fee indicators which are in the nature of an additional device tted to the subscribers telephone station, in the novel arrangement no special device whatsoever is at the subscribers station needed for the reception of the communications relating to time and fee, such communications being indicated here by the teleprinting means present at the subscribers station.
  • Such means acts to convert the telegraph signals into characters written down so as to remain visible.
  • Figs. 1 to 7 are wiring diagrams illustrating one embodiment of the invention.
  • Figs. 1 and 2 represent an additional device that comprises a relay arrangement A, B peculiar to each teleprinting station FM intended to receive indications as to time and fee. Allotted to this additional device is a switch box B provided with a calling key A' and a clearing key S. Fig.
  • FIG. 3 shows a fee-indication register which shares in the fee-indication-pulsing from the time zone meter ZZZ to the fee meter Z of the exchange and acts to store up the metering impulses as rotary steps with the aid of several rotary selectors Da, Db, Dc until the fee indication is transmitted, such storage action being such that one step of the selector Da shall characterize one tarii unit while one step of selector Db shall characterize ten tarilT units and one step of selector Dc characterize hundred tariff units.
  • each such register is provided with a rotary selector having several wipers and arranged as a line finder ZS intended to establish the connections to the respective teleprinting line.
  • 'I'he converting device Abw shown in Fig. 4 has for its object to obtain from the register the time values and fee values, then to convert these values into the respective telegraph signals and nally to send these to the teleprinting station.
  • the converting device is likewise associated with a line iinder MS which has to nd the fee register ready for eiecting the signal transmission, and to switch the converting device to the teleprinting line.
  • the telegraph signals are conveyed over the fee register,
  • Fig. 5 shows the automatic adjusting device intended to reproduce an indication of the respective year and day by producing a combination of numerals. This device is caused to step in accordance with the day indications and under the iniiuence of rotary selectors Dt, Dm, Di. The adjustment of a month indication to 30 or 3l days, as the case may be, and also the adjustment of February to 29 days in the case of a leap year is effected automatically.
  • the hours of the day are reproduced by the arrangement shown in Fig. 6.
  • the adjustment of the rotary selectors Dh, Dm2, DmI is likewise automatic.
  • a clock Uh not forming part of the circuit arrangement causes a current impulse to act by contact u/min on this arrangement each minute, thus controlling the selectors Dh, Dm2, Dml in compliance with time.
  • 'Ihe time zone meter ZZZ controlling the setting up of a teleprinting call, comprises switching members which inter alia act to determine a call to be chargeable. From the rst operation, intended to initiate a metering, up to the occurrence of the rst recording impulse acting on the fee meter Z disposed in the calling set of the teleprinting station, an idle time of several seconds will elapse during which a teleprinting call can be undone without the fee meter responding. As soon as device ZZZ has received the criterion of initiating the metering operation a relay thereof is energized for some seconds in company with another relay. The switching operations occurring in the device ZZZ are not shown in the drawings.
  • the said relay of the device ZZZ causes the relay contact shown at 22 I to complete a circuit from 23 over the recording or metering line to bank contact 29 and thencey to the fee meter Z of station FM, the resultant current also flowing through a relay A n connected in series or in parallel with the device Z.
  • the intensity of this current is so limited by a resistance We that relay A connected in parallel with the meter Z shall respond While device Z shall not be affected.
  • the circuit here is as follows: ground, battery, resistance We, closed contact 2
  • relay contact I changes from position 22 to position ⁇ I9, whereupon the rst metering impulse occurs if the call has not been released.
  • relay A has been energized over switched contact 2
  • 24 causes a relay G of the next idle fee register, Fig. 3, to respond, being energized over resting contacts I Ulf and "13s, the circuit here being: ground, contact 43a, line
  • the energized relay G connects the stepping magnet Zs of the line finder to ground over an interrupter U, the circuit being as follows: ground,
  • Magnet Dd thus acts to step the appertaining wipers. Each step causes these wipers to arrive at the next following bank contact.
  • Each step of the selector Da corresponds to a tariff unit.
  • 33da of selector Da is brought to reassume its home position O, whereby a current impulse is caused to act on relay EI ,V the circuit being: ground, wiper
  • selector da receives an impulse in accordance with the circuit: ground, contact
  • selector Dc After this selector itself has received ten impulses, then in the samelmanner as selector Db has been influenced selector Dc receives a current impulse over contact
  • time adjusting device intended to transmit the respective day of the year and the hour thereof by a combination of numerals, and also an example of the means foreffecting the conversion into telegraph signals is;
  • the switching means here employed are merely rotary selectors, having several wipers, and relays.
  • the wipers may be moved, however, by purely mechanical means.
  • the wipers of the rotary selectors are so adjusted by current impulses acting on the stepping magnets at predetermined instants of time that at a certain moment predetermined numerical values, intended to reproduce the calendar time and hours, may be obtained and converted by the device Abw in accordance with the position of the wipers'.
  • the bank contacts of the rotary selectors are by collecting lines connected to ten relays of a relay group 0 9 of the device Abw, Fig. 4.
  • the insulated wipers of the rotary selectors are joined to the bank contacts of the stepping mechanism W of the converting device Abw. As soon as the wiper of the mechanism W arrives at a bank contact connected to a wiper of a selector intended for the time adjustment,
  • this wiper acts to establish a connection to one of the ten relays of relay ⁇ group 0-9, this; relay thus being energized.
  • the influence of this relay group on the converting device will appear further on from the description of the converting device itself. In the rst place the operation of the device intended for adjusting the hours shall be explained now.
  • a switching clock Uh indicated in Fig. 6 is arranged to actuate a mechanically acting ccntact u/min each minute, thus causing a current impulse to influence relay U, the circuit being: Ground, closed contact u/rnin, relay U, battery, ground.
  • Relay U is hence energized, switching its contacts.
  • Siliu relay U again receives earth potential over the contacts 3927 and 3931vvl'iichv are connected in parallel.
  • Contact 3031 forms part of the relay L of the converting device Abw represented in Fig. 4.
  • Relay L is connected in circuit as long as the converting device is in its resting position or the wiper of the mechanism W is moving over the contacts of the rest positions 2il2. Contact Sicil is opened in this event.
  • Relay contact ddu acts to energize relay K, the circuit being: Ground, contact tutu, winding of relay K, resistance Wk, battery, ground.
  • Relay K has a copper jacket, thus being slow to release. As long as relay U is energized relay K is energized too. Relay K, however, drops its armature somewhat later than relay U. The time elapsing until relay K drops its armature after relay U, is sufficient to produce an impulse acting on the stepping magnet Dini.
  • the circuit here is: Ground, Contact tutti (resting), contact 36th (closed), winding of magnet Dml, battery, ground. By each impulse the wipers Stil and iwdml are advanced by one step.
  • step i! acts to energize relay V, iiA the selectors employed are of the l2 steps type, as is the case in the embodiment shown.
  • Relay K is new again energized with the aid of contact web.
  • Relay I has immedlately before energized the stepping magnet 75 Dml by means of contact 306k and is heren-pon soon deenergized by its winding becoming shortcircuited through contact 3
  • Relay U is not affected by this new current impulse.
  • relay K has dropped its armature stepping magnet Dml is cut out.
  • step l or step l' contact SM1 acts to energize relay W, the circuit being: Ground, Contact 3
  • Relay W is slow to release.
  • 4v reassumes its position of rest while relay W is still energized
  • stepping magnet Dh is for a short time supplied with current.
  • the circuit here is: Ground, contact 3
  • Selector Dh is arranged for 24 steps and has two wipers. It may, however, comprise a 12 steps contact bank. In this case the six wipers are subdivided, one half of the bank then characterizing the hours from 0 to 12 oclock while the other half corresponds to the time from 12 to 24 oclock.
  • 8 dh is necessary in order to characterize the hours from 0 to 24, this being the arrangement adopted in the case represented.
  • 6dh has to characterize the units digits while wiper 3
  • relay winding I is energized over contact 3
  • Relay X after 24 hours acts to produce a current impulse by which the device for adjusting the day of the year is energized, as will be seen from Fig. 5.
  • the automatic adjusting device for the conversion and reproduction of the calendar indication regarding the day, month and year is represented in Fig. 5.
  • This device is here shown to comprise three rotary selectors Dc, Dm, Dfi, which so inuence each other that after 30 or 31 days, for instance, or in February after 28 days, or 29 days in the case of leap years the day adjuster Dt shall make the first step along its bank while at the same time also the month adjuster Dm is advanced by one step.4
  • the rotary selector intended for the day indication that is, selector Dt, has either 16 or 32 steps. If it is arranged for 32 steps then the day indication is adjusted with the aid of two wipers.
  • the third wiper automatically causes the bank contacts of the last month days,'which may be missing, to be tapped in dependence upon the month wiper 4
  • the day switching of selector Dt is in accordance with Fig. 6 effected by the hour adjusting device producing a current impulse for the stepping magnet Dt.
  • the circuit here is: Ground, contact 320w, switched contact 32
  • Each step of selector Dt causes the wipers 40
  • the movement of the wipers of selector Dt over the last bank contact is initiated by wiper 4
  • relay is energized in the circuit: Ground, wiper 4
  • Relay thus responds and hereby energizes winding II of the relay X by means of contact 40512.
  • the circuit being as follows: Ground, contacts 404g, 4051i, winding II of relay X, battery, ground.
  • Contact 32 Ir acts to energize the stepping magnet Dt in accordance with the circuit: Ground, contacts 320D, 32
  • contact 409dt of magnet Dt relay Y is energized, whereupon contact 4041/ acts to deenergize winding II of the relay X.
  • Relay X thus drops its armature and by contact 32M: brealks the circuit of magnet Dt.
  • Udt has thus been stepped to 3U.
  • the bank contacts 29 and 30 are bridged over by the relay contact 4081i, this being still switched. Consequently selector Dt can be stepped on by relay X.
  • the short interval during which relay X is energized serves for energizing the selector Dm by means of contact 4
  • Selector Dm moves its wipers one step, which signifies the conversion to the next month.
  • Selector Dm likewise acts to characterize with the aid of two wipers the correct month indication by two numerals of the numeral range 01-12.
  • 5dm steps to position I2 of its contact segment.
  • Relay responds each month, as stated before. Since wiper 4
  • Relay Z responds and by contact 4
  • a converting device Abw which comprises a translating device and a sender of telegraph signals
  • Fig. 4 This device Abw as compared with known arrangements of this kind has to fulfil a much wider problem than to reproduce in a purely mechanical manner a series of the same telegraph signals recurring in the same regular order.
  • a formerlike switching barrel H provided with apertures g, contact levers da, lil-d5 are acting which in accordance with the position of these apertures act to produce telegraph signals by cooperating With a series of sending contacts ia, zZ-z5, these telegraph signals being at the receiver converted into visible characters which reproduce a teleprinting communication sent from the exchange.
  • the setting-up of these telegraph signals occurs in dependence upon the respective positions? of the time and fee adjusters.
  • the succession of the regularly and irregularly formed signals depends upon a stepping mechanism W clutched to the switching barrel H.
  • the relays of relay group 0 9 are arranged to influence by their contacts the sending contacts z'l to ⁇ i5 in'such a manner that by bridging over one or another of these contacts that telegraph signal is formed which accords with the designation of that relay of relay group 0-0 which aids in forming the signal concerned.
  • the positions of the rotary selector are in a special succession tested by Wiper 20
  • the respective relay of the relay group 0-0 is energized.
  • the cutting in or out of onel of these relays is effected during that time in which the locking and starting impulses of a telegraph signal are produced by the device da, ia of the signal sender.
  • a shaft a which is connected with a motor M by a suitable gearing, thus having a predetermined rotational speed, is provided With Isix cam discs b having grooves mutually displaced by the seventh part of a revolution.
  • Isix cam discs b having grooves mutually displaced by the seventh part of a revolution.
  • projections c of the contact levers da, dl to d held in engagement therewith by springs e.
  • Each projection c will enter the groove or notch of the respective cam disc depending upon the t-appet f (fl to f5) of the respective lever d (dl to d5) being in the reach of the respective aperture g, thus being fable to enter this aperture.
  • lever dll for ins-tance, is operated to actuate the sending contact i4.
  • This contact then breaks the circuit and holds it interrupted as long as projection c of the lappertaining lever e is in engagement with the notch ⁇ of the respective cam disc b.
  • lever di acts to close the contact i4.
  • the levers d enter their notches one 1aiiter ⁇ another.
  • the lever da shown in Fig. 4 to be in its operative position, has no tappet f. This lever da is lto produce the starting impulses with the aid of its sending contact ia.
  • Lever da thus is the first to enter the respective notch ⁇ after each revolution of the shaft a and during the seventh part of a revolution thereof opens its :contact ia.
  • lever dl is on the point of entering the notch of its cam disc. If lthe .tappet of lever dl is allowed to enter this notch its contact il is opened, whereby .the first current impulse, designated as No current or spacing impulse, is produced. If, however, this tappet cannot enter the notch, Ithen the current impulse designated as Current or marking impulse is origin-ated.
  • the second contact lever d2 is dealt with, and so on, until .at last contact lever d5 will enter the notch of the respective cam disc.
  • the locking impulse necessary to form ya [telegraph signal is produced by no interruption of the contact row ia, il to i5 occurring during the last seventh part of a revolution of shaft a.
  • the transmission of the Itelegraph signals to the teleprinting station FM is as follows.
  • Relay Hl, H2 which is still energized owing to its release retardation thus again receives current over winding II as long as key S is rbeing depressed.
  • the armature of relay B is switched, thus causing positive potential to be applied to winding II of relay H. Since this relay is already connected to the positive potential, the current by which it has been energized ceases to flow, relay H therefore being deenergized after its release retardation has been overcome.
  • the responding relay C whose Winding I may be short-circuited by contacts Ilr and I Ic, acts to initiate the transmission of the fee indication.
  • the line finder MS of the device Abw is caused to find the fee register, the following circuit being established: Ground, contacts
  • Relay M becomes e'ective and thereby with the aid of relay Zm sets the selector Ms rotating, the circuit here being: Ground, contact 261m, contact 258m, magnet coil Ms, battery, ground. Magnet Ms acts to energize the relay winding II of relay Zm bymeans of its contact 2697,13. Contact 2682111. now again opens the said circuit in which selector Ms is included, the selector thus being deenergized. Hereupon also relay Zm, winding II, is freed by contact 269ms. Such cooperation between rotary magnet Ms and relay Zm is continued until wiper 265ms stepping from one bank contact to the other arrives at that bank contact, which is connected to the calling fee register and the relay C of which has been energized.
  • the circuit here is: Ground, winding I of relay Zm, wiper 265ms, selector exit s, inlet s of the fee register, switched contact
  • Relay Zm which now remains energized stops the rotary selector Ms by means of contact 268em.
  • the resistance of the magnet coil of this relay is so great that the relay S of the fee register is flown through by a current by which. it cannot be energized, the winding of this relay having a comparatively small number of turns.
  • Relay M by contact 284m applies potential to the motor M of the signal sender, the motor thus being started.
  • rest relay L which with the normal state of the arrangement is energized, drops its armature signal impulses are transferred to the polarized telegraph relay P in accordance with the circuit: Ground, Winding II of relay P, row of contacts 210, 21
  • the contact levers are in accordance with the location of the apertures g of barrel H opened or remain closed. Winding II of relay P is accordingly acted upon by current impulses.
  • the impulse combination accords with the international telegraph code intended for start-stop apparatus.
  • Relay P transfers the received impulses by switching its armature to the positive or negative side of the telegraph battery, this armature being moved either to the contact side 2842) or 28871.
  • the positive or negative impulses starting from relay contacts 28111 or 28817, ow over wiper 264ms, selector exit i, inlet z' of the fee register, contacts
  • polarized relay of the transformer has to transmit the sender impulses to the start-stop printer magnet of the teleprinting machine FM. Here the telegraph signals are written down by the start-stop printer.
  • the telegraph signal rst produced is that intended for the return of the carriage of the teleprinting machine, whereupon a signal intended for the line feed follows. Now a signal is produced by which the printing device is changed to print letters, whereupon the letters of the indication T-OFF WASH are given after one another with intervening spacing signals. Then an additional spacing signal follows which in its turn is followed by the signal intended to change the printing device of the start-stop printer to the production of numerals.
  • These signals are produced in a purely mechanical manner, that is to say, by the arrangement comprising barrel H and the lever assembly dl to d5 controlling the sending contacts z'l to i5.
  • Wiper 2lll now arrives at that contact which is connected to Wiper Mlldt of the time adjuster overV line d.
  • the position of this wiper is ascertained in accordance with the circuit: Ground, Wiper 20
  • Relay 2 of the relay group 0-9 therefore responds.
  • the sending contacts il to i5 are so influenced by the contacts of this relay 2 as to form the telegraph signal 2 in accordance with the numeral indication of such relay.
  • the succession of the five current impulses employed for forming the telegraph signal 2 then is:
  • the locking impulse is produced by all the contact levers remaining closed during the last seventh part rotation of shaft a. In this Way the characteristic for producing the telegraph signal 2 inclusive of starting and locking impulse is formed.
  • the telegraph signal serving this purpose is merely transferred to the contact levers of the row of sending contacts by barrel H.
  • the transmission of the telegraph signal 2 and of the other signais, intended for indicating day, month and year, is now eiected in the same manner as before.
  • the regular intermediate signals are again given mechanically with the aid of barrel H.
  • the operation of testing fthe hour and minute adjusting device and finally the fee register are the same as before described.
  • Relay S being provided with a com- 'u' paratively small number of turns is not energized by the current supplied to relay Zm, winding I. It is not until Winding I of relay Zm is shortcircuited by the earth applied to wiper tti that relay S, Winding I, receives the voltage necessary for energizing it.
  • Relay S of the fee register acts to deenergize relay F by means of contact [05s.
  • Relay R which has been energized over the Wipers I33da or iildt or Illdc drops its armature.
  • Owing to contact Hilf winding II of relay S is energized over contact l53s and remains energized until the return of the selectors Da, Db, Dc has been finished.
  • the circuit here is: Ground, Wipers lllda, Itildb, l45dc, contact Hilf, contact 153s, Winding II of relay S, battery, ground.
  • Relay R returning into its normal position breaks the connection which leads to the signal sender, this being effected by 25 means of the contacts
  • Contact i is has broken the connection ⁇ leading to the tWo relays F, B.
  • the deenergized relay F has in its turn broken the connec tion between metering device Z and relay El. by means of contact Illlf.
  • contact liiiif in its position oi rest acts to separate relay C from relay T of the calling set.
  • Relay C by its contacts I63c and IISc breaks the lines which lead to the a and b lines of the calling set.
  • the deenergized relay R has by its contacts l3llr,
  • the circuit is: Ground, interrupter U, wiper I Sida, contact
  • wiper ltlda has arrived in the' home position O, the connection is changed from v interrupter U to Wiper ldb of selector Db, whereupon this acts toapply earth over wiper l38db and contact i357 to the magnet Db.
  • selector Dc is connected to earth over the wip ers Da, Db, returned to normal, and over Wiper IMdc and contact
  • the connections over the contact banks da) db, dc are disconnected from ground, winding II of relay S thus becoming deenergized.
  • the last relay ci the fee register has been restored to normal, this register thus being ready for a new engagement. This fact is indicated by the contacts Illlf and lli3s returning into their normal position.
  • the motor starting relay M or the converting device is disconnected from earth by relay L responding and thus opening contact Mtl.
  • Relay M drops its iarmature and by means of its contact 284m disconnects the motor from the current source. The motor then comes to a standstill, thus stopping the converting device. By means of contact 2161 the row of sending contacts is again bridged over.
  • the signal sender causes the time and fee communication to be transferred over the metering register that has been connected rst. I-Iereupon the second time and fee communication is given over the fee register which is ready for operation.
  • the converting device being able to give about 390 signals each minute, a time and fee communication is accomplished with about 50 telegraph signals and about 16 spare and rest steps'in say 10 seconds. The waiting time will thus be no longer than seconds. If three or more time and fee communications should become due at the same time, then the metering registers nearest to the wipers ms in the direction of rotation of the selector are employed one after the other for transmitting the communication to the teleprinting stations.
  • a teleprinter system comprising an exchange, a calling station having teleprinter signal transmitting equipment and teleprinter signal receiving and printing equipment, a single signalling circuit connecting said equipment with said exchange, a called station having teleprinter signal transmitting equipment and teleprinter signal receiving and printing equipment, means for establishing a two-way teleprinter connection from said calling station over said single signalling circuit and through saidexchange to said called station whereby teleprinter communications can be sent from the transmitting equipment of said calling station to the receiving and printing equipment of said called station and from the transmitting equipment of said called station to the receiving and printing equipment of said calling station, means for initiating a release of such connection, automatic storage means at such exchange for registering fee value units, means for automatically integrating these units, switching devices at such exchange automatically operative in response to initiation of such release to convert said integrated units into teleprinter signals of the type receivable by said receiving and printing equipment of said calling station, and means at such exchange for transmitting said converted signals over said single signalling circuit to said teleprint
  • said automatic storage means and said means for integrating comprise a metering device, selectors, disposed in the said exchange, to control this said metering device in decade fashion, means to supply metering impulses to said metering device when in its initial position, means for causing said metering device then to step on, wherein said exchange further comprises means to disconnect the lines of the subscribers stations, while still maintaining the value indications in readiness for transmission.
  • said automatic storage means and said means for integrating comprise a metering device, selectors, disposed in the said exchange, to control this device in decade fashion, means to 'supply metering impulses to said metering device when in its initial position, means for causing this device then to step on, wherein said exchange further comprises means to disconnect the lines of the subscribers stations and at the same time to actuate a device adapted to derive from the said storage means the registered value indications.
  • said automatic storage means and said means for integrating comprise a metering device, selectors, disposed in the said exchange, to control this device in decade fashion, wherein said switching devices automatically operate to convert said integrating units comprise means for deriving from the said storage means the numeric values of the indications registered therein, a relay assembly, an arrangement of contacts, levers adapted to control these contacts, and a barrel adapted to control these levers, such relay assembly, contacts and levers being adapted by their cooperation to produce telegraphic signals in accordance with the said numeric values.
  • said automatic storage means and said means for integrating comprise a metering device, selectors, disposed in the said exchange, to control this device in decade fashion, wherein said switching devices automatically operate to convert said integrating units comprise means for deriving from the said storage means the numeric values of the indications registered therein, a relay assembly, an arrangement of contacts, levers adapted to control these contacts, a barrel adapted to control these levers, and relay contacts adapted to bridge over the first said contacts in accordance with the numeric values to be obtained.
  • said automatic storage means and said means for integrating comprise a metering device, selectors, disposed in the said exchange, to control this device in decade fashion
  • said switching de- Vices automatically operate to convert said integrating units comprise means for deriving from the said storage means the numeric values of the indications registered therein, a relay assembly, an arrangement of contacts, levers adapted to control these contacts, a mechanism for oparating these levers, and a switching device for effecting in cooperation with this mechanism a signal transmission representative of said numeric values.
  • said switching devices automatically operative to convert said integrating units comprise an assembly of contacts, levers adapted to control these contacts, a barrel adapted to actuate these levers in predetermined succession, and wherein said exchange further comprises means for transmitting predetermined series of current impulses, produced by means of said contacts, to a subscribers station.
  • said automatic -storage means and said means for integrating comprise a metering device, selectors, disposed in the said exchange, to control this device in decade fashion
  • said switching devices automatically operate to convert said integrating units comprise means for deriving from the said storage means the numeric values of the indications registered therein, a relay assembly, an arrangement of contacts, levers adapted to control these contacts, a barrel adapted to control these levers.
  • said exchange further comprises a switching device under control of said barrel and adapted for the transmission of predetermined signals.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Motor And Converter Starters (AREA)
US183924A 1937-01-07 1938-01-07 Teleprinting system Expired - Lifetime US2235006A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202670X 1937-01-07

Publications (1)

Publication Number Publication Date
US2235006A true US2235006A (en) 1941-03-18

Family

ID=5772653

Family Applications (1)

Application Number Title Priority Date Filing Date
US183924A Expired - Lifetime US2235006A (en) 1937-01-07 1938-01-07 Teleprinting system

Country Status (5)

Country Link
US (1) US2235006A (fr)
CH (1) CH202670A (fr)
FR (1) FR831705A (fr)
GB (1) GB509016A (fr)
NL (1) NL53016C (fr)

Also Published As

Publication number Publication date
CH202670A (de) 1939-01-31
NL53016C (fr)
FR831705A (fr) 1938-09-13
GB509016A (en) 1939-07-07

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