US1868706A - Single line repeater - Google Patents

Single line repeater Download PDF

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Publication number
US1868706A
US1868706A US462793A US46279330A US1868706A US 1868706 A US1868706 A US 1868706A US 462793 A US462793 A US 462793A US 46279330 A US46279330 A US 46279330A US 1868706 A US1868706 A US 1868706A
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United States
Prior art keywords
line
relay
winding
relays
armature
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
US462793A
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English (en)
Inventor
Frederick G Hallden
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International Communications Laboratories Inc
Original Assignee
International Communications Laboratories Inc
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Filing date
Publication date
Application filed by International Communications Laboratories Inc filed Critical International Communications Laboratories Inc
Priority to US462793A priority Critical patent/US1868706A/en
Priority to FR716672D priority patent/FR716672A/fr
Application granted granted Critical
Publication of US1868706A publication Critical patent/US1868706A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/20—Repeater circuits; Relay circuits
    • H04L25/207—Repeater circuits; Relay circuits using electromagnetic switches

Definitions

  • the object of this invention is to provide a simple arrangement for repeating the signals free from distortion and at high speed.
  • two sets of two relays each may be employed at a repeating station and in such a manner that the re-transmitted signals are not appreciably distorted, even at high speed.
  • Figure 1 is a circuit diagram of a repeater station embodying a preferred arrangement of four polar relays as used in the present invention.
  • Fig. 2 is an alternative fragment-of the diagram showing twoneutral relays in place of two of the polar relays.
  • Two of the relays are line relays having three windings each and two other relays, either of the polar or neutral type, are retransmitting relays actuable from the line relays.
  • suitable resistances 29 and 33 are provided in the several circuits to control the'energiz'ing force in the windings as well as in the line.
  • Two condensers 30 and 31 also function in a manner presently to be explained.
  • the alternative use of neutral relays as shown in Fig. 2 obviously eliminates the need for the biasing windings 9 and 11 because the springs 32 7 take the place of the latter.
  • the ampere turns inithe line winding 4 of relay 23 and Winding I of. relay 24 are SINGLE a nate-ER i' 1930. Serial No. 452,793.
  • the armature 13 will conduct positive potential through contact 15 to operating winding 10 of relay 25 and thence to holding winding 8 of relay 24: whence the circuit is completed to negative battery Armature 19 of relay 25 breaks away from contact and repeats the spacing signal through relay 24; and line 2.
  • Relay 2% does not release, however, because at the same time that operating winding 10 of relay is energized holding winding 8 builds up its holding power and acts to retain armature 16 in the marking position, prior to the deenergization of line winding 7.
  • the spacing signal is thus repeated to line 2 through line winding 7 of relay 2&- but without disturbing the armature 16 thereof.
  • a marking signal is again received over line 1 to energize line winding at of relay 23, it acts opposingly to the force of biasing winding 3 but with twice the number of arm pere turns and armature 13 is drawn against contact 14.
  • lVhile it is in transit operating winding 10 of relay 25 de-energizes and bias ing winding 9 (or spring 32, Fig. 2) acts alone in restoring armature 19 to its back contact 20 so as to re-transmit a marking signal over line 2.
  • Line winding 4 of relay 23 energizes and moves armature 13 from contact 15 (dc-energizing operating winding 10 of relay 25) and against contact 14. (to energize biasing winding 6 of relay Holding winding 8 of relay dissipates the charge from condenser 30 and then biasing winding 6 of the same relay acts alone (because the operators key on line 2 is open) to move armature 16
  • Operating winding 12 of relay 26 and holding winding 5 of relay 23 are energized and armature 21 breaks away from contact 22, thus opening the circuit to line 1 and repeating the spacing signal thereto. Armature 13, however, is now prevented from moving since it is held to the marking side by holding winding 5. Relays 23 and 25 then become inactive so that relay 2% may receive signals from the operator on line 2 and relay 26 will re-transmit the same.
  • the lag in re-transmitting marking signals is equal to the lag in re-transmitting spacing signals. That the lag in both cases is equal becomes obvious when it is noted that the lag during spacing signal re-transmission comprises the time required to tie-energize the line winding of the active line relay, the transit time of its armature, and the time required to energize the operating winding of the associated. re-transmitting relay; while the lag during marking signal re-transmission comprises the time required to energize the line winding of the active line relay, the time required to de-energize the operating winding of the associated rc-transmitting relay and the transit time of its relay armature.
  • polarized input relays having line windings and biasing windings, a rc-transmitting relay operable from each input relay, and means operable from one of said input relays to shift from one winding to another the magnetizing forces in the other input relay without moving the armature thereof.
  • each said relay comprising a line winding and a normally energizedbiasing and 'a normally de-energized holding wind ing
  • a retransmitting relay operable from each receiving relay and comprising a normally de-energized winding in series with'a contact of said receiving relay and also in series with said normally deenergized holding winding of the other said receiving relay, and a condenser bridged across the last said biasing winding.
  • a-single-line telegraph repeater plu ral-winding polarized receiving relays, retransmitting relays, armature tongues for said relays, and means controlled by the receiving relay which responds to input signals to first ole-energize one of the windings of the other receiving relay, secondly to energize another winding thereof in series with a winding of one of said retransmitting relays, and lastly to retransmit through the linewinding of said other receiving relay a signal to which said relay remains unresponsive.”
  • a single line telegraph repeater comprising two line relays and two'retransmitting relays
  • the method of rendering one of said line relays unresponsive to retransmitted marking signals which consists in prolonging the efi'ect of a holding winding on said line relay bydischarging a condenser through said holding winding when the armature tongueof the other linerelay leaves its spacing contact.
  • a line relay in each loop circuit responsive, to incoming signals thereon, a biasing winding and a normally i deenergizedholding winding for each line relayconnected respectively to the front and back contacts of theothenline relay, and two retransmitting relays each ofwhichhas a contact and armature in one loop circuit anda winding responsive to the operationof telegraph repeater comare
  • I serviceable relays armature tongues with contacts, a line winding, a biasing winding and a normally deenergized holding winding
  • a condenser arranged to dis charge through said normally deenergized holding winding of said inactive line relay during the travel time of the armature tongue of the active line relay from spacing to marking and until the current in the line winding has built up.
  • a single line telegraph repeater comprising two line relays and two retransmitting relays, a line connected winding, a biasing winding and a holding winding for each line relay, an operating winding for each retransmitting relay, and means responsive to the operation of the line relay which receives signals to successively modify the energizing forces in the three windings of the other line relay so as to render the latter unresponsive to retransmitted signals.
  • each line relay controls its own retransmitting relay so that one of said retransmit ting relays is held inoperative until the direction of signal transmission is reversed.
  • a single line telegraph repeater comprising line relays responsive to incoming signals, two alternatively and opposingly en ergizable windings one of which is normally de-energized and line connected windings for each line relay to render the same unresponsive to out-going signals and retransmitting relays at least one inding of which is in series with one of the first named opposingly energizable windings.
  • a single line telegraph repeater comprising two line relays and two retransmitting relays
  • means to prevent distortion of the retransmitted signals comprising two line relays their armatures having marking and spacing contacts and their cores being triple wound, interconnections between the contacts of each line relay and two windings respectively of the other line relay, one of said windings being releasable when said line relay armature leaves its marking contact and operable upon re-contacting therewith, the other of said windings being operable when said line relay armature reaches its spacing contact and releasable upon leaving the same, and connections between the spacing contact of each line relay and the operating winding of its associated retransmitting relay so as to operate the latter to retransmit a spacing signal when the operative line relay armature reaches its back contact and to retransmit a marking signal with alag behind the departure of said line relay armature from said back contact equivalent to the travel time of the armature of said retransmitting relay.
  • a telegraph repeater two relays either one of which responds to incoming signals, two retransmitting relays each operable from one of said signal-responsive relays, an operating winding for each retransmitting relay in series with a normally deenergized holding winding of another of said relays, and a condenser to prolong the energization of said holding winding until after the retransmitted signal strength has been built up.
  • a pair of polar line relays each having a line winding, a biasing winding and a normally de-energized holding winding, an energizing circuit for each biasing winding including a contact of the other line relay, and an energizing circuit for each holding winding including a contact of the other line relay.
  • each set comprising a polar line relay and an associated retra-nsmitting relay, each of said line relays having a line winding, a biasing winding, and a normally de-energized holding winding, an energizing circuit for each biasing winding including a contact of the other line relay, an energizing circuit for each holding winding including a winding of the associated re-transmitting relay and a contact of the other line relay, and biasing means for each of said re-transmitting relays.
  • each set comprising a polar line relay and an associated re-transmitting relay, each of said line relays having a line winding, a biasing winding, and a normally de-energized holding winding, an energizing circuit for each biasing winding including a contact of the other line relay, an energizing circuit for each holding winding including a winding of the associated retransmitting relay and a contact of the other line relay, a condenser associated with the energizing circuit of each holding winding and adapted when said energizing circuit is opened to discharge through its associated holding winding in a direction to prolong the energization of said holding winding, and biasing means for each of said re-transmitting relays.
  • a single line repeater the combination of a pair of polar line relays each having a line winding, a biasing winding and a normally de-energized holding winding, an energizing circuit for each biasing winding including a contact of the other line relay, an energizing circuit for each holding winding including a contact of the other line relay, a condenser associated with the energizing circuit of each holding winding and adapted when said energizing circuit is opened to discharge through its associated holding winding in a direction to prolong the energization of said holding winding.
  • the method of rendering a line relay irresponsive to marking signals re-transmitted through a line winding thereof which comprises discharging a condenser through a holding winding of said relay in order to prolong the energization of said winding until the current in said line winding has been built up to its normal strength.
  • a telegraph repeater comprising, incoming and outgoing lines, a relay controlled jointly by biasing and holding circuits and 5 the outgoing line circuit, means to open the line outgoing circuit to repeat a signal, and means to render the biasing circuit ineffective and the holding circuit effective before the opening of the outgoing line circuit. 7 23.
  • a telegraph repeater comprising in-- coming and outgoing lines, a relay controlled: jointly by biasing and holding circuits and by the outgoing line circuit, means to close the outgoing line circuit to send a markingsignal, means to open the holding circuit and then close the biasing circuit, and means for maintaining the holding circuit effective to: 7 hold the relay after the closure of the bias ingcircuit and until current in said outg0-- 3 ing line circuit has reached a value suflicient to hold said relay.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
US462793A 1930-06-21 1930-06-21 Single line repeater Expired - Lifetime US1868706A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US462793A US1868706A (en) 1930-06-21 1930-06-21 Single line repeater
FR716672D FR716672A (fr) 1930-06-21 1931-05-06 Répétiteur pour ligne télégraphique simple

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US462793A US1868706A (en) 1930-06-21 1930-06-21 Single line repeater
FR716672T 1931-05-06

Publications (1)

Publication Number Publication Date
US1868706A true US1868706A (en) 1932-07-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
US462793A Expired - Lifetime US1868706A (en) 1930-06-21 1930-06-21 Single line repeater

Country Status (2)

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US (1) US1868706A (fr)
FR (1) FR716672A (fr)

Also Published As

Publication number Publication date
FR716672A (fr) 1931-12-24

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