US1823978A - Telegraph or teletyper plant - Google Patents

Telegraph or teletyper plant Download PDF

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Publication number
US1823978A
US1823978A US340882A US34088229A US1823978A US 1823978 A US1823978 A US 1823978A US 340882 A US340882 A US 340882A US 34088229 A US34088229 A US 34088229A US 1823978 A US1823978 A US 1823978A
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US
United States
Prior art keywords
relay
selectors
telegraph
selector
lines
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
US340882A
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English (en)
Inventor
Jipp August
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens AG
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 claimed from DES84238D external-priority patent/DE587628C/de
Priority claimed from DES86499D external-priority patent/DE596041C/de
Application filed by Siemens AG filed Critical Siemens AG
Priority claimed from DES90074D external-priority patent/DE640494C/de
Application granted granted Critical
Publication of US1823978A publication Critical patent/US1823978A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks

Definitions

  • TELEGRAPH OR TELHTYPER PLANT Filed Feb. '18, 1929 xi 0 *1 l iwi? w N F 7%; F" a *9 y I w a I Y v izxfrai Patented Sept. 22, 1931 UNITED STATES PATENT OFFICE AUGUST J'IIPP, OF SPAN'DA U, BERLIN, GERMANY, ASSIGNOB '10 SIEMENS &
  • the invention relates to improvements in the connection over a special line not used durin the selector or telegraph operation, in or er to enable the necessary differentiation to be made between the current impulses for the various purposes (selector, telegraph, selector resetting impulse) used in the operation of the plant.
  • the resetting of the automatic selectors takes place by impulses.
  • the conditions or nature of which (such as the type of current, frequency) are difl'erent from those of the selector or telegraph currents.
  • audio frequency or subaud1o frequency communication bemg preferably used in view of the telephone service, which also allows multiplex utilization of the lines.
  • the different condition of the selector resettin currents may, for instance, be attaine by employing alternating'current'in contrast with the direct current of the seoperative or rest position temporarily to pass into the operative or working position, a difference in the duration of the impulses may be effected by bringing the armatures after the termination of telegraphic traific i. e.
  • the t rowing of the relay from the alse into the true position of rest is preferably efi'ected by a condenser impulse released on switchin on the motor of the telegraph apparatus, w ich ex cites an auxiliary winding of the transmitter relay and throws its armature over, whereby the receiving relay is also chan ed over and a pre-selector switched in.
  • this preselection which takes place automaticall the subscriber may proceed to select with h1s dial.
  • retarding means suc as slow-acting relays
  • the slow-acting relay closes the circuit of the re-selector for the duration of the connectlon and when deexcited releases in well known manner the tripping devices of the pre-selector and the other line selectors.
  • Fig. 1 is a simplified diagram of connections of an exchange according to my invention.
  • Fig. 2 is "a diagram of my improved arrangement of relays. I
  • the subscribe station 2 possesses the usual line balance N.
  • a number dial D which controls the alternating contact at upon operation of the dial and the alternating contact (2 upon release of the dial.
  • the contact d operates to disconnect the sending relay S during the selection, from the contact T controlled by the teletyper ap aratus, and to connect such relay .4 with the impulse contact d
  • a two-pole reversing switch A is arranged in the circuit ofrelay S and has the function of connect-' ing resource of alternating current B with "relay at thecompletion of a message to efi'ect release of the selector.
  • the letter R indicates the receiving magnet of the teletyper apparatus.
  • the relay could not respond, since the connecting through relay of the occupied selector would be connected in parallel to the newly incoming relay, so that in consequence of the dividing of the current such a weak current only is available for each relay, that the armature can be maintained in the attracted position, but cannot be pulled up from the position of rest.
  • the connecting through relay P now connects the four lines a, b, d, e of the selecting stations to the brushes 2', is, Z, m by closing its contacts P a, P 6, Rd and P e. Since the brushes rest upon the contacts 3 and these are in their turn connected to the multiplex lines of the subscriber 3, the transmission of messages may commence without the telegraph impulses now sent over the line, which are of the same kind as the selector impulses, affecting the selectors.
  • the double pole switch A which may be in the form of a key, is temporarily reversed by one of the subscribers, whereupon the sending relay S is disconnected from the sending and selector contacts and is connected with the source of alternating current B.
  • the alternating current thus sent out has a frequency different from that of the telegra h fre uencyand brings into action, over t e sen ing relay S conductor L and receiving relay E the resonance relay W located in the automatic exchange; the relay W is permanently connected in these lines and is preferably connected through a condenser C in known manner.
  • the relay W thereupon closes, through its armature 'w a circuit for the releasing magnet M which, upon attracting its armature, releases the latching element which holds the selector.
  • the latter then returns to its initial positionunder the infiuenceof a spring; the relays W and P are thus deenergized and the operating magnet H is again connected to the conductors a, I; through g so that the mechanism is again in its original position.
  • Fig. 2 illustrates diagrammatically a relay, in which the resetting device of the loaded selectors is released by the application of the false position of rest.
  • W is the winding of a telegraph receiving relay with the working contact a and the idle contact 1'. Both contacts are connected to a pole each of a battery B, the centre of which is grounded.
  • the armatureof the relay is alternately pulled against one or the other of the contacts by telegraphic impulses, so that a current of alternating direction is closed in well known manner.
  • the working contact upon which rests the relay during the false idle position is bridged by'the winding V of a slow-acting relay.
  • the slow-acting relay whose contacts, not shown, control in 'well known manner a pre-selector and the tripping device of further selectors, is thus short-circuited in the false idle position of the receiving relay W. ⁇ Vhen the receiving relay is excited its armature is pulled against the true idle contact 1", whereby the slow-acting relay is connected to the battery B and excited.
  • a telegraph or teletyper system comprising a plurality of subscriber stations, lines for transmitting the telegraphic mes sages, one or more exchanges, automatic selectors at each of said exchanges for connecting said stations selectively, means located at the subscriber stat ons and operative to control the said selectors over the said telegraphic lines', and devices at each of said exchanges for releasing the said selectors at the end of a communication.
  • said devices being operable by current of a frequency difierent from that of the telegraph currents.
  • a telegraph or teletyper system comprising a plurality of subscriber stations, lines for transmitting the telegraphic messages, one or more exchanges, automatic selectors at each of said exchanges for connecting said stations selectively, means located at the subnance relay responsive at the frequency of an alternating current transmitted at the end of the communication.
  • a telegraphic or teletyper system comprisin a plurality of subscriber stations, ines or transmitting the telegraphic messages, one or more exchanges, automatic selectors at each of said exchanges for connect- 5 ing said stations selectively, means located at the subscriber stations and opera ive to control the said selectors over the said telegraphic lines, and devices at each of said exchanges for releasing the said selectors at the end of a communication, said devices including a resonance relay responsive at the frequency of an alternating current transmitted at the end of the communication, said resonance relay being permanently connected to said telegraphic lines.
  • a telegraph or teletyper system comprising a plurality of subscriber stations, lines for transmitting the telegraphic messages, one or more exchanges, automatic selectors at each of said exchanges for connecting said stations selectively, means located at the subscriber stations and operative to control the said selectors over the said telegraphic lines, and devices at each of said exchanges for releasing the said selectors at the end of a communication, said devices being operable by a current of the same nature as that of the telegraphic impulses but of duration different from that of said impulses.
  • a telegraph or teletyper system comprising a plurality of subscriber stations, lines for transmitting the telegraphic messages, one or more exchanges, automatic selectors at each of said exchanges for connecting said stations selectively, means located at the subscriber stations and operative to control the said selectors over the said telegraphic lines, devices at each of said exchanges for releasing the said selectors at the end of a communication, and a relay forming part of the telegraphing circuit and having a contact movable between-a false idle position and a true idle position occupied during the operation of the system, said devices being controlled by the contact of said relay in such manner, that the release of said devicesis effected upon switching such contact from the true idle position to the false idle position.
  • a telegraph or teletyper system comprising a plurality of subscriber stations
  • lectors at each of said exchanges for connecting said stations selectively, means located at the subscriber stations and operative to control the said selectors over the said tele' graphic lines, devices at each of said exchanges for releasing the said selectors at the end of a communication, a polarized relay forming part of the telegraphing circuit, and a slow-acting relay having a winding bridg ing the contact of the olarized relay, said devices being controlle by said slow-acting relay.
  • a telegraph or telety or system comprising a plurality of subscri er stations, lines .for transmitting the telegraphic messages
  • one or more exchanges automatic selectors at each of said exchanges for connecting said stations selectively,--means located at the subscriber stations and operative to control the said selectors over the said telegraphic lines, devices at each of said exchanges for releasing'the said selectors at the end of a communication, and switching mechanism automatically cut in at the termination of a communication at a subscriber station, said devices being controlled by said mechanism.
  • a telegraph or telety ersystem comprising a plurality of subscri r stations, lines for transmitting the telegraphic messages, one or more exchanges, automatic selectors at each of said exchanges for connecting said .stations selectively, means located at the subscriber stations and operative to control the said selectors over the said telegraphic lines, devices at each of said exchanges for releasing the said selectors at the end of a communication, and automatic switching mechanism in said subscriber stations adapted to be cut in when the teletyper apparatus is at rest, said devices being controlled by said mechanism.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Alarm Systems (AREA)
  • Structure Of Telephone Exchanges (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
US340882A 1928-02-18 1929-02-18 Telegraph or teletyper plant Expired - Lifetime US1823978A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DES84238D DE587628C (de) 1928-02-18 1928-02-18 Telegraphenanlage, bei der die Verbindung der einzelnen Teilnehmerstationen durch Selbstanschluss-Vermittlungsstellen erfolgt
DE317724T 1928-02-18
DES86499D DE596041C (de) 1928-07-06 1928-07-06 Telegraphenanlage, insbesondere mit Waehlerbetrieb, bei der die Anker der zur UEbertragung der Telegraphierzeichen verwendeten Relais (z. B. polarisierte Relais) zwei Ruhelagen besitzen
DES90074D DE640494C (de) 1929-02-19 1929-02-19 Telegrafenanlage, bei der innerhalb der Selbstanschlussvermittlungsstelle getrennte Stromkreise fuer die beiden entgegengesetzten UEbertragungswege jeder Verbindung vorgesehen sind

Publications (1)

Publication Number Publication Date
US1823978A true US1823978A (en) 1931-09-22

Family

ID=31950618

Family Applications (2)

Application Number Title Priority Date Filing Date
US340882A Expired - Lifetime US1823978A (en) 1928-02-18 1929-02-18 Telegraph or teletyper plant
US429739A Expired - Lifetime US1859776A (en) 1928-02-18 1930-02-19 Telegraph plant or type-printing telegraph

Family Applications After (1)

Application Number Title Priority Date Filing Date
US429739A Expired - Lifetime US1859776A (en) 1928-02-18 1930-02-19 Telegraph plant or type-printing telegraph

Country Status (5)

Country Link
US (2) US1823978A (pt)
BE (5) BE267873A (pt)
FR (1) FR669817A (pt)
GB (4) GB306406A (pt)
NL (3) NL35326C (pt)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2468574A (en) * 1945-03-23 1949-04-26 Teletype Corp Selective control of printer motors at outlying telegraph stations

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2468574A (en) * 1945-03-23 1949-04-26 Teletype Corp Selective control of printer motors at outlying telegraph stations

Also Published As

Publication number Publication date
BE386518A (pt)
BE363110A (pt)
NL35326C (pt)
GB317724A (pt) 1930-03-27
NL36364C (pt)
US1859776A (en) 1932-05-24
GB314974A (en) 1930-05-26
GB349124A (en) 1931-05-18
BE267873A (pt)
NL37568C (pt)
FR669817A (fr) 1929-11-21
GB306406A (en) 1930-05-19
BE358254A (pt)
BE367873A (pt)

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