US2224677A - Signaling system - Google Patents

Signaling system Download PDF

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Publication number
US2224677A
US2224677A US263585A US26358539A US2224677A US 2224677 A US2224677 A US 2224677A US 263585 A US263585 A US 263585A US 26358539 A US26358539 A US 26358539A US 2224677 A US2224677 A US 2224677A
Authority
US
United States
Prior art keywords
tube
anode
cathode ray
circuit
impulse
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
US263585A
Other languages
English (en)
Inventor
Clarence D Hanscom
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.)
AT&T Corp
Original Assignee
Bell Telephone Laboratories Inc
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
Application filed by Bell Telephone Laboratories Inc filed Critical Bell Telephone Laboratories Inc
Priority to US263585A priority Critical patent/US2224677A/en
Priority to GB5911/40A priority patent/GB547553A/en
Priority to NL97621A priority patent/NL52685C/xx
Priority to FR866501D priority patent/FR866501A/fr
Priority to CH223660D priority patent/CH223660A/fr
Application granted granted Critical
Publication of US2224677A publication Critical patent/US2224677A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H04Q3/52—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements
    • H04Q3/525—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements using tubes in the switching stages

Definitions

  • This invention relates to telephone systems and particularly to improvements in automatic telephone systems.
  • An object of the invention is to simplify anc.
  • the present invention has been applied to an arrangement of this kind in which a cathode ray tube is employed as the selector for establishing telephone connections by the deection of an electronic beam by dial pulses; and a feature thereof is thev arrangement whereby the beam is maintained locked in a deected position by a circuit over the beam and whereby the dial pulses causing the deection are extinguished as soon as the deflection is accomplished.
  • a subscribers substation has been shown at l with the line terminating in the cathode ray tube 2 which is provided with the usual filament 3 connected to a suitable source of current for the production of an electron beam through the tube.
  • This beam is employed as the selecting means and as a path for talking current as will hereinafter ⁇ be described.
  • the cathode element i is connected to the subscribers line, and an anode 5 is provided to control and concentrate the beam of electrons as is Well known in the art.
  • the battery 24 is provided to impress a positive potential on anode 5 with respect to cathode
  • a pair of deflection plates 6 and 'l are provided in the tube in any well-known manner to deflect the beam onto the anode terminals shown located at the end of the tube and collectively marked with the numeral 8.
  • To these terminals are connected individual conductors.
  • the rst conductor 9 represents one conductor of the :first subscribers line and the remaining conductors lead to other equipments of this kind for other subscribers lines and are equally spaced with respect to each other, except the distance between the conductor 9 and the second conductor I0.
  • This distance represents, if the subscriber at l is considered as the rst subscriber in a group of ten, two spaces so that when the beam is deiiected to select the second subscriber it must be deflected two steps.
  • the 5 rst step will point the beam onto a terminal ll which is provided for holding the beam between pulses as will hereinafter be described.
  • the corresponding terminals for the second subscriber terminate in the group designated with the refl0 erence character l2 and the corresponding terminals for a third subscribergterminate in the group designated with the number I3.
  • Another conductor I4 is common to all groups of conductors leading to all of the subscribers equipi5 ments.
  • the individual subscribers conductors as for example, the group 8 terminating at the first subscribers equipment are connected to individual filters marked as'a group with the numeral l5 20 and provided to prevent voice currents from passing through the resistances I6 to the conductor Il which is employed as will hereinafter be described in connection with the operations of the circuits.
  • Two discharge tubes i8 and i9 are connected through various circuits including sources of potentials and an induction coil 2li, one winding of which is connected to a dial 2
  • the tube l@ may be of the gas-filled type, so that the anode discharge current continues to flow following the removal of the input signal.
  • a current through the output circuit of tube I9 also ows through the primary winding 40 of theinduction coil 4I. This causes a momentary impulse of current to ow through the secondary winding 42 of this induction coil 4I which has the eect of making the grid 43 less negative in relation to the potential of filament 44 as normally established by the battery 45 and potentiometer t6 in parallel and the connection through the secondary winding 42 of the induction coil 4I between the filament 44 and the grid 43.
  • This momentary change of potential between these elements causes a current to flow through the output circuit of the tube for maintaining the potential difference now established between the plates 6 and 1 as follows: From filament 44,
  • the line potential filters shown at I5 are as stated for the purpose of preventing talking current from disturbing the holding circuits. There is one of these filters inserted in each line between the resistances I6 and the terminals associated therewith.
  • the beam will remain' on terminal 39 and a connection will therefore be established over the common conductor I4, the subscribers telephone set I, control element 4, beam 22, terminal 39 and the conductor I0, thus causing the selection of the second subscriber.
  • This circuit is continued over the conductor I0 through talking battery 51.
  • the conductor vI9 terminates in the second subscribers cathode ray tube at the rst terminal corresponding to ⁇ terminal 23 in tube 2. From there it is extended through the beam corresponding to beam 22, the element corresponding to element 4, through the called subscribers ringer back over the common conductor I4. This causes the called subscribers ringer to operate and when the called subscriber answers, the ringer is eliminated and a connection is completed for talking between the first and second subscribers.
  • connections may be established from any subscriber to any ⁇ other in the system disclosed in this drawing which comprises as stated a group of ten subscribers lines.
  • a cathode ray tube a 'plurality of anodes in said tube, means for deflecting the cathode ray in said tube from one anode to another, and means operative over said ray for maintaining the ray deflected on an anode after having been deflected by said rst means to said anode and until said first means again deflects the ray to a succeeding anode'.
  • a cathode ray tube in a signaling system, a cathode ray tube, signaling circuits, a plurality of anodes in said tube, means for transmitting momentarily succeeding impulses, means for deilecting the cathode ray in response to succeeding impulses from one anodelto another to select said signaling circuits, and means for maintaining the ray deected on an anode between impulses.
  • a cathode ray tube In a signaling system, a cathode ray tube, a plurality of anodes in said tube, an impulse transmitter, means for deilecting the cathode ray in said tube from one anode to another in response to succeeding impulses from said transmitter, and means for maintaining the deflected ray in the deflected position on an anode after the impulse having deflected it ⁇ to said anode ceases and until the ray is again deected by ansaid tube from one anode to another in response to succeeding impulses from said transmitter, means for operating said deecting means to maintain said ray deflected between impulses and forextinguishing said impulses as soon as they have deflected the ray.
  • a cathode ray tube a cathode ray tube, a plurality of anodes in said tube, an impulse transmitter, means for deilecting the cathode ray in said tube from one anode to another in response to succeeding impulses from said transmitter, and circuit means including the ray for operating said deecting means to maintain said ray deiiected and for extinguishing said impulses as soon as they have deected theray.
  • a cathode ray tube a plurality of anodes in saidtube,-. means for deiiecting the cathode ray in said tube from one anode to another, a circuit closed over said ray when deected to an anode for-maintaining said ray deected on said anode until again deected to another anode, and -a communication circuit established over said cathode ray.
  • animpulse transmitter means for deecting the cathode ray in said tube from one anode toanother in re-l sponse to succeeding impulses from said transmitter, a discharge tube, means for actuating said discharge tube in response to succeeding impulses from said transmitter, and means responsive to the actuation of said discharge tube and includingsaid cathode ray for extinguishing said impulses as soon as they have deected the ray and for operating said deecting means to maintain said ray deilected on the anode to which it has been deiiected by a preceding impulse until a succeeding impulse is received.
  • a cathode ray tube deflection plates in said tube, a plurality of anodes in said tube, an impulse transmitter, a discharge tube, a circuit between said impulse transmitter and said discharge tube for the actuation of the discharge tube in response to impulses from said transmitter, an output circuit'from said discharge tube to said deection plates for, deecting the cathode ray from one anode to another in succession in response to impulses from said transmitter, a second discharge tube, an input circuit for said second discharge tube associated with the output circuit of said ilrst discharge tube for actuating said second dischargetube each time said output circuit is actuated, an output circuit for said second discharge tube including the cathode ray for maintaining tre deection of the ray as deflected by a preceding impulse and for quenching said preceding impulse as soon as said output circuit of said second discharge tube becomes effective until a succeeding impulse is received to deflect the ray to a succeeding anode.
  • a cathode ray tube having ldeflection plates, a calling signaling circuit associated with said tube, a plurality of anodes in said tube, a signaling circuit associated with each anode, an impulse transmitter,

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
US263585A 1939-03-23 1939-03-23 Signaling system Expired - Lifetime US2224677A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US263585A US2224677A (en) 1939-03-23 1939-03-23 Signaling system
GB5911/40A GB547553A (en) 1939-03-23 1940-04-02 Improvements in telecommunication exchange systems
NL97621A NL52685C (enrdf_load_stackoverflow) 1939-03-23 1940-04-12
FR866501D FR866501A (fr) 1939-03-23 1940-04-13 Systèmes de signalisation et analogues
CH223660D CH223660A (fr) 1939-03-23 1940-04-20 Installation de central automatique pour télécommunications.

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US263585A US2224677A (en) 1939-03-23 1939-03-23 Signaling system
GB5911/40A GB547553A (en) 1939-03-23 1940-04-02 Improvements in telecommunication exchange systems
NL97621A NL52685C (enrdf_load_stackoverflow) 1939-03-23 1940-04-12
FR866501T 1940-04-13
CH223660T 1940-04-20

Publications (1)

Publication Number Publication Date
US2224677A true US2224677A (en) 1940-12-10

Family

ID=9804924

Family Applications (1)

Application Number Title Priority Date Filing Date
US263585A Expired - Lifetime US2224677A (en) 1939-03-23 1939-03-23 Signaling system

Country Status (5)

Country Link
US (1) US2224677A (enrdf_load_stackoverflow)
CH (1) CH223660A (enrdf_load_stackoverflow)
FR (1) FR866501A (enrdf_load_stackoverflow)
GB (1) GB547553A (enrdf_load_stackoverflow)
NL (1) NL52685C (enrdf_load_stackoverflow)

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2436677A (en) * 1942-12-31 1948-02-24 Rca Corp Incremental deflection of cathoderay beam
US2446945A (en) * 1942-08-25 1948-08-10 Rca Corp Electronic computing device
US2472774A (en) * 1945-10-17 1949-06-07 Farnsworth Res Corp Irregular interlace scanning system
US2474224A (en) * 1939-04-28 1949-06-28 Int Standard Electric Corp Electronic switch
US2477008A (en) * 1945-08-01 1949-07-26 Rosen Leo Electrical apparatus
US2480130A (en) * 1946-04-06 1949-08-30 Fed Telecomm Lab Inc Low impedance switch circuit
US2483400A (en) * 1939-05-26 1949-10-04 Int Standard Electric Corp Electronic switch
US2498081A (en) * 1944-12-29 1950-02-21 Bell Telephone Labor Inc Electronic counting
US2517712A (en) * 1945-01-24 1950-08-08 Bendix Aviat Corp Electronic counter
US2522291A (en) * 1945-09-20 1950-09-12 Bell Telephone Labor Inc Cathode-ray tube with target controlled deflecting plates
US2528100A (en) * 1946-05-31 1950-10-31 Bell Telephone Labor Inc Electronic calculator
US2528020A (en) * 1945-07-24 1950-10-31 Philco Corp Mask controlled feedback system for cathode-ray tubes
US2531624A (en) * 1947-05-01 1950-11-28 Bell Telephone Labor Inc Selective signaling system
US2556179A (en) * 1946-03-02 1951-06-12 Int Standard Electric Corp Multiple pulse producing system
US2560166A (en) * 1949-01-14 1951-07-10 Jr William E Glenn Pulse analyzer
US2564908A (en) * 1949-03-08 1951-08-21 Nat Union Radio Corp Voltage sampling and electron beam holding arrangement
US2565486A (en) * 1947-11-10 1951-08-28 Int Standard Electric Corp Pulse duration separation system
US2587734A (en) * 1947-12-22 1952-03-04 Meguer V Kalfaian Modulator tube and circuits
US2591981A (en) * 1946-10-23 1952-04-08 Hartford Nat Bank & Trust Co Circuit arrangement, including a cathode-ray tube comprising cathode-ray beam deflecting means
US2599368A (en) * 1948-05-10 1952-06-03 Bell Telephone Labor Inc Beam switching system
US2599949A (en) * 1948-06-24 1952-06-10 Nat Union Radio Corp Electronic stepping switch
US2609455A (en) * 1949-11-30 1952-09-02 Bell Telephone Labor Inc Telephone system
US2632147A (en) * 1949-02-09 1953-03-17 Bell Telephone Labor Inc Communication system employing pulse code modulation
US2654049A (en) * 1939-04-07 1953-09-29 Int Standard Electric Corp Electron switch control system
US2657330A (en) * 1949-07-29 1953-10-27 Hartford Nat Bank & Trust Co Electric circuit comprising a cathode-ray tube
US2670405A (en) * 1948-06-10 1954-02-23 Bell Telephone Labor Inc Signaling system employing electron beams
US2704336A (en) * 1951-01-03 1955-03-15 Kazan Benjamin Pulse counting tube
US2719248A (en) * 1947-07-11 1955-09-27 Josephson Bengt Adolf Sanmel Electron discharge device
US2728911A (en) * 1950-04-11 1955-12-27 Cutler Phil Frequency selective device
US2781171A (en) * 1948-09-17 1957-02-12 Northrop Aircraft Inc Electronic counting tube
US2786193A (en) * 1948-03-10 1957-03-19 Raytheon Mfg Co Underwater sound system
US2795376A (en) * 1951-08-17 1957-06-11 Stevens Res Foundation Computing unit for addition and multiplication
US2896112A (en) * 1945-08-20 1959-07-21 Philip H Allen Cathode ray tube apparatus
US2940047A (en) * 1955-09-14 1960-06-07 Burroughs Corp Multi-position electronic gating circuits
US3035202A (en) * 1959-04-21 1962-05-15 Gen Dynamics Corp Counting tube system
US3076146A (en) * 1945-12-27 1963-01-29 Bell Telephone Labor Inc Cathode beam tube circuit having means for converting current variations to stepped waveform
US3340361A (en) * 1945-07-09 1967-09-05 Bell Telephone Labor Inc Signaling system with cathode ray tube quantizer

Cited By (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2654049A (en) * 1939-04-07 1953-09-29 Int Standard Electric Corp Electron switch control system
US2474224A (en) * 1939-04-28 1949-06-28 Int Standard Electric Corp Electronic switch
US2483400A (en) * 1939-05-26 1949-10-04 Int Standard Electric Corp Electronic switch
US2446945A (en) * 1942-08-25 1948-08-10 Rca Corp Electronic computing device
US2436677A (en) * 1942-12-31 1948-02-24 Rca Corp Incremental deflection of cathoderay beam
US2498081A (en) * 1944-12-29 1950-02-21 Bell Telephone Labor Inc Electronic counting
US2517712A (en) * 1945-01-24 1950-08-08 Bendix Aviat Corp Electronic counter
US3340361A (en) * 1945-07-09 1967-09-05 Bell Telephone Labor Inc Signaling system with cathode ray tube quantizer
US2528020A (en) * 1945-07-24 1950-10-31 Philco Corp Mask controlled feedback system for cathode-ray tubes
US2477008A (en) * 1945-08-01 1949-07-26 Rosen Leo Electrical apparatus
US3104316A (en) * 1945-08-20 1963-09-17 Philip H Allen Registers
US2896112A (en) * 1945-08-20 1959-07-21 Philip H Allen Cathode ray tube apparatus
US2522291A (en) * 1945-09-20 1950-09-12 Bell Telephone Labor Inc Cathode-ray tube with target controlled deflecting plates
US2472774A (en) * 1945-10-17 1949-06-07 Farnsworth Res Corp Irregular interlace scanning system
US3076146A (en) * 1945-12-27 1963-01-29 Bell Telephone Labor Inc Cathode beam tube circuit having means for converting current variations to stepped waveform
US2556179A (en) * 1946-03-02 1951-06-12 Int Standard Electric Corp Multiple pulse producing system
US2480130A (en) * 1946-04-06 1949-08-30 Fed Telecomm Lab Inc Low impedance switch circuit
US2528100A (en) * 1946-05-31 1950-10-31 Bell Telephone Labor Inc Electronic calculator
US2591981A (en) * 1946-10-23 1952-04-08 Hartford Nat Bank & Trust Co Circuit arrangement, including a cathode-ray tube comprising cathode-ray beam deflecting means
US2531624A (en) * 1947-05-01 1950-11-28 Bell Telephone Labor Inc Selective signaling system
US2719248A (en) * 1947-07-11 1955-09-27 Josephson Bengt Adolf Sanmel Electron discharge device
US2565486A (en) * 1947-11-10 1951-08-28 Int Standard Electric Corp Pulse duration separation system
US2587734A (en) * 1947-12-22 1952-03-04 Meguer V Kalfaian Modulator tube and circuits
US2786193A (en) * 1948-03-10 1957-03-19 Raytheon Mfg Co Underwater sound system
US2599368A (en) * 1948-05-10 1952-06-03 Bell Telephone Labor Inc Beam switching system
US2670405A (en) * 1948-06-10 1954-02-23 Bell Telephone Labor Inc Signaling system employing electron beams
US2599949A (en) * 1948-06-24 1952-06-10 Nat Union Radio Corp Electronic stepping switch
US2781171A (en) * 1948-09-17 1957-02-12 Northrop Aircraft Inc Electronic counting tube
US2560166A (en) * 1949-01-14 1951-07-10 Jr William E Glenn Pulse analyzer
US2632147A (en) * 1949-02-09 1953-03-17 Bell Telephone Labor Inc Communication system employing pulse code modulation
US2564908A (en) * 1949-03-08 1951-08-21 Nat Union Radio Corp Voltage sampling and electron beam holding arrangement
US2657330A (en) * 1949-07-29 1953-10-27 Hartford Nat Bank & Trust Co Electric circuit comprising a cathode-ray tube
US2609455A (en) * 1949-11-30 1952-09-02 Bell Telephone Labor Inc Telephone system
US2728911A (en) * 1950-04-11 1955-12-27 Cutler Phil Frequency selective device
US2704336A (en) * 1951-01-03 1955-03-15 Kazan Benjamin Pulse counting tube
US2795376A (en) * 1951-08-17 1957-06-11 Stevens Res Foundation Computing unit for addition and multiplication
US2940047A (en) * 1955-09-14 1960-06-07 Burroughs Corp Multi-position electronic gating circuits
US3035202A (en) * 1959-04-21 1962-05-15 Gen Dynamics Corp Counting tube system

Also Published As

Publication number Publication date
FR866501A (fr) 1941-08-19
NL52685C (enrdf_load_stackoverflow) 1942-06-15
GB547553A (en) 1942-09-02
CH223660A (fr) 1942-09-30

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