US2498723A - Sensitive gas tube pulse receiving and repeating system - Google Patents

Sensitive gas tube pulse receiving and repeating system Download PDF

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Publication number
US2498723A
US2498723A US660269A US66026946A US2498723A US 2498723 A US2498723 A US 2498723A US 660269 A US660269 A US 660269A US 66026946 A US66026946 A US 66026946A US 2498723 A US2498723 A US 2498723A
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United States
Prior art keywords
relay
tube
receiving
pulse
winding
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Expired - Lifetime
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US660269A
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English (en)
Inventor
Clement M Theillaumas
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International Standard Electric Corp
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International Standard Electric Corp
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Publication date
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/446—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency
    • H04Q1/4465—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency the same frequency being used for all signalling information, e.g. A.C. nr.9 system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/442—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies
    • H04Q1/4423—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies using one signalling frequency

Definitions

  • the present invention r'elates ⁇ to :pulse ⁇ 'receivk.ing andV repeating circuits for telecommunication systems using signalingV impulses ofalternating' Vcurrent either'ata irequencyffin'thewvoice ffrequency' rangeor 'at some otherpredetermined rparticular frequency'which yis'convenient 'in light Tof available apparatus.
  • vThe Ysystem-fhereinsdescribed and claimed isrelated tof thatfdescribed and claimed in 'my copending l application Y'Serial No. 661,493, :filed xApril l2, 1946,:.now'fPatent'No- 2,462,144, issued February '22, 1949.
  • a receiving member utilizes an assembly consisting of a dry rectifier, a polarized two-winding relay, and a condenser.
  • Anobject'of the present invention is to avoid the shortcomings of the prior arrangements ⁇ by providing simple andeilective means for the ini able by signal current either at a frequency 'inthe Voice frequency range or at some other particular frequency convenient in .light 'ci the availy able apparatus ina telecommunication system.
  • the pulse repeating or receiving circuit includes a cold-cathode tube iedirom the input line through a condensertransformer Series circuit and employs a relay larrangement comprising a two-winding retrans- 4 mittinganode-relay, an auxiliary relay for inter nel switching, and a slow relay for neutralizing the signal input equipment of the other channel.
  • the auxiliary relay may be omitted and its contacts transferred to the anode-relay.
  • One of the Windingsof this anode-relay is energized' by signaling current from ing' this relay :actuated during the period of the 1 incoming signal.
  • REP indicates schematically a conventional telephone repeater serving as a couv4block -A is operating.
  • Vconvenience relay COR is shown in block'Ai.
  • Cor- *of block "A1 is an east-to-west pulse repeater.
  • relays Three relays, AOR, BGR-and COR-are actuated duri-ng the operation of block Anand of these the function o'f relay COR is to disable block A1 when However, as a matter cf respondingly a relay 'CERfwhichfis actuated to disable block A whenever block Ar is, opere-ting, is shown in block A.
  • the relay windings are con- .nected 'to sources of ⁇ direct current which maybe constituted iby a common low-voltage anda 'hightension supply B2.
  • Attcry B1 A source of alterlnating current Spe;A a l56-cycle ⁇ generator is iconn'ectedfto contacts h2 and c2 Aof relay BOR.
  • a cold-cathode tube CFO comprising the rcathode Ca, anode Au, and auxiliary electrode Esc,
  • Front contact b1 of relay AOR is also closed, which establishes a circuit to connect ground to battery B1 feeding the auxiliary relay BOR, which pro-y Jerusalems the following operations: First, by opening its contact a2 it inactivates tube CFO. Second, by closing its contacts b2 and cz, it connects the alterhating-current source S to wires of east-side line E. After each inactivation of tube CFO, relay AOR remains energized, throughout the duration of the pulse, through its left-hand Winding as described.
  • the cold-cathode tube is energized only between the instant each pulse begins and the instant relay BOR operates.
  • auxiliary relay BOR might be omitted and its contacts b2, c2 transferred to relay AOR; this would necessitate replacement of high-tension supply B2 by an equivalent source of alternating current, thus assuring prompt extinction of the tube at the end of each impulse and the provision of a condenser of rather large capacity in shunt to the anode winding, to prevent vibration of the combined relay.
  • relay AOR the rapid operation of relay AOR is elected by virtue of the inertia-free response of tube CFO to the signal voltage, with the aid of the energy taken from high-tension source B2 or its equivalent.
  • the incoming signal energy which would be too weak to cause this rapid excitation, is used merely to hold this same relay duringthe remainder of the pulse. It is clear that, under these conditions, distortion will be particularly low.
  • condenser CO and transformer TO will depend on the kind of signal currents which are to be transmitted, i. e., whether they are of commercial or acoustic frequency. It will be understood that these elements may be adjustable so as to respondv to frequencies of either range.
  • a pulse receiving or repeating system for telecommunication networks comprising a tube having a cold cathode, an auxiliary electrode and an anode, means for impressing an incoming signal across said cathode and said auxiliary electrode for causing ionization of said tube, a relay having a winding connected in the cathode-anode circuit of said tube, a local source of current in said circuit for actuating said relay, a second winding on said relay for causing the holding of the relay operated during the signal period, and current rectifying means receiving incoming signal energy and transmitting said energy through said second winding for retaining said relay operated.
  • a pulse receiving or repeating system for telecommunication networks comprising a tube having a cold cathode, an auxiliary electrode, and an anode, means for impressing an incoming signal across said cathode and said auxiliary electrode for causing ionization of said tube, a relay having a winding connected in the cathode-anode circuit of said tube, a local source of current in said circuit for actuating said relay, a second winding on said relay for causing the holding of the relay operated during the signal period, current rectifying means receiving incoming signal energy and transmitting said energy through said second winding for retaining said relay operated, and means controlled by operation of said relay for deenergizing the first winding of said relay and the cathode-anode circuit of said tube.
  • Impulse receiving apparatus comprising first and second transmission lines, means for receiving impulses from the first line and repeating themto the second line, means for receiving impulses from the second line and repeating them to the first line, each of the means for receiving comprising a 'gaseous discharge tube having a main gap and a control gap, a means for applying received impulses to the control gap to ionize the tube, a local source of potential connected to the tube for energizing the main gap when the tube is ionized, a relay having two windings, means for connecting in series said local source of potential, the main gap and one of the windings for initially operating the relay upon the ionization of the tube, a means for applying the received impulses to the other winding for holding the relay operated for the duration of an impulse, a local source of signaling energy, and a means responsive to operations of the relay for applying impulses from said source of signaling energy to one of the transmission lines in accordance with impulses received from the other, and means responsive when one of the means for receiving is engaged
  • impulse receiving apparatus as in claim 3 in which the impulses received from at least one of the lines are impulses of alternating current having a predetermined frequency
  • the means for applying those received impulses to the control gap of one of the tubes comprises a transformer with its secondary connected across said control gap and its primary connected across said one of the lines over a circuiti including in series a condenser and the input terminals of a bridge rectiner, said condenser and said primary being tuned to said frequency
  • the second Winding of the relay initially operated'by said tube is connected across the output terminals of said bridge rectifier for holding said relaylfor the duration of each received impulse by energy derived therefrom over said bridge rectlner.
  • Impulse receiving-apparatus as in claim 3 also comprising means4 responsive to the initial operation of the relay of either of the means for receiving to disconnect from the tube thereof said local source of main gap energizing potential to deionize the tube.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Electrotherapy Devices (AREA)
US660269A 1944-01-07 1946-04-06 Sensitive gas tube pulse receiving and repeating system Expired - Lifetime US2498723A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR2498723X 1944-01-07
FR636253X 1944-01-08
FR2462144X 1945-03-27

Publications (1)

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US2498723A true US2498723A (en) 1950-02-28

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US660269A Expired - Lifetime US2498723A (en) 1944-01-07 1946-04-06 Sensitive gas tube pulse receiving and repeating system
US661493A Expired - Lifetime US2462144A (en) 1944-01-07 1946-04-12 Pulse receiving and repeating system

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Application Number Title Priority Date Filing Date
US661493A Expired - Lifetime US2462144A (en) 1944-01-07 1946-04-12 Pulse receiving and repeating system

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US (2) US2498723A (xx)
BE (1) BE477477A (xx)
FR (2) FR54628E (xx)
GB (1) GB636253A (xx)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2579530A (en) * 1947-04-29 1951-12-25 Int Standard Electric Corp Four-wire to two-wire connecting circuit
US2914615A (en) * 1952-10-09 1959-11-24 Int Standard Electric Corp Electric signal repeaters
US3166642A (en) * 1961-12-21 1965-01-19 Bell Telephone Labor Inc Signaling arrangement

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB323804A (en) * 1928-10-11 1930-01-13 Western Electric Y Improvements in impulse controlling arrangements for use in electrical signalling systems
US2029693A (en) * 1934-09-07 1936-02-04 Bell Telephone Labor Inc Telephone system
US2045402A (en) * 1935-01-17 1936-06-23 Bell Telephone Labor Inc Signaling system
US2047729A (en) * 1933-09-29 1936-07-14 Bell Telephone Labor Inc Transmission control in two-way signaling systems
US2056235A (en) * 1935-05-22 1936-10-06 Bell Telephone Labor Inc Resetting circuit for trigger devices
US2091551A (en) * 1935-06-22 1937-08-31 Bell Telephone Labor Inc Signaling system
US2222248A (en) * 1939-04-18 1940-11-19 Bell Telephone Labor Inc Ringing system
US2253621A (en) * 1940-04-05 1941-08-26 Bell Telephone Labor Inc Signaling system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL215077A (xx) * 1931-07-02

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB323804A (en) * 1928-10-11 1930-01-13 Western Electric Y Improvements in impulse controlling arrangements for use in electrical signalling systems
US2047729A (en) * 1933-09-29 1936-07-14 Bell Telephone Labor Inc Transmission control in two-way signaling systems
US2029693A (en) * 1934-09-07 1936-02-04 Bell Telephone Labor Inc Telephone system
US2045402A (en) * 1935-01-17 1936-06-23 Bell Telephone Labor Inc Signaling system
US2056235A (en) * 1935-05-22 1936-10-06 Bell Telephone Labor Inc Resetting circuit for trigger devices
US2091551A (en) * 1935-06-22 1937-08-31 Bell Telephone Labor Inc Signaling system
US2222248A (en) * 1939-04-18 1940-11-19 Bell Telephone Labor Inc Ringing system
US2253621A (en) * 1940-04-05 1941-08-26 Bell Telephone Labor Inc Signaling system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2579530A (en) * 1947-04-29 1951-12-25 Int Standard Electric Corp Four-wire to two-wire connecting circuit
US2914615A (en) * 1952-10-09 1959-11-24 Int Standard Electric Corp Electric signal repeaters
US3166642A (en) * 1961-12-21 1965-01-19 Bell Telephone Labor Inc Signaling arrangement

Also Published As

Publication number Publication date
GB636253A (en) 1950-04-26
FR960757A (xx) 1950-04-25
FR54628E (fr) 1950-07-07
US2462144A (en) 1949-02-22
BE477477A (xx)

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