US2582349A - Selecting system - Google Patents

Selecting system Download PDF

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Publication number
US2582349A
US2582349A US22426A US2242648A US2582349A US 2582349 A US2582349 A US 2582349A US 22426 A US22426 A US 22426A US 2242648 A US2242648 A US 2242648A US 2582349 A US2582349 A US 2582349A
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US
United States
Prior art keywords
signal
relay
relays
vacuum tube
tube
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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
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US22426A
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English (en)
Inventor
Oberman Roelof Maarten Marie
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Individual
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Individual
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • 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
    • H04Q1/38—Signalling arrangements; Manipulation of signalling currents using combinations of direct currents of different amplitudes or polarities over line conductors or combination of line conductors
    • 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

Definitions

  • Figs: 2 and 3 show curves characterizing-the operation of the: discriminating device shown-in Fig.1:
  • oontroller orrelay'set huntingstep-by-step-for Fig; 4 is: a. modification of the device shownbrid'ge" equilibrium,. and? being. stopped: when iniFig. v1.
  • resistor R Wheatstone-bridgeseaclnhavmg"an'equilibrium Fiorrthe followingdescriptionsof this example discriminator; and capablewo selects. signal out it-.-wil1 beankumedthat ten different signalvolt oi lfi possible signal criteria in the: operation ages can be imparted to; the terminal'xbysintme'of'at most foursuccessive relays. troducing different resistanewrin thesendingap-
  • the device according to the present invention paratus'fiTsi. combines az high" positioning. rapidity with the The vacuum tube Vrgoverns the selecting mo use" off only one-:Wheatstbne bridge. because.
  • discriminating device is'oi such acharthe-curveof Fig. 2,.showingithatthis tube: and actertliat-rtli'e selecting; motion-is stopped. not thetest relay (winding NW1) remaiminoperaonlywhen a signal voltage-isxemctly equilibrated,. tive, if terminalY has a voltage equal to or more"- butmlswwhenvasignai voItageis-Ypassed. negative: than the, voltage of terminal X. It:
  • the armature mu constitutes a means for controlling the selector means. If armature mu is on its front contact it starts the energization of the series of relays A to E. If armature mu is restored to normal so as to be in contact with its back contact the energization of the series comes to an end in the position which it had attained, the operative relays, for instance A, B, C being held in operative position by their second windings which are inserted in holding circuits. The remaining relays, for instance D and E remain idle.
  • the armatures as to e; and the potentiometer R1 to R1 controlled by the same constitute a means for communicating information to the discriminator, namely the information how far the energization of the series of relays has proceeded. This information is communicated in form of a voltage for instance -42 volts to the discriminator over the terminal Y of the same.
  • the relay F forms a means for discriminating between odd and even criteria by completing with the armature f3 thereof the circuit for the tube V2 and the second winding of the relay NW. This enables a fine distinction to be made between neighboring signal voltages on terminal X, for instance if Y has a voltage of -42 and X has a voltage of -42 belonging to the odd signal or volts belonging to the even signal 4 as more fully pointed out in the table above.
  • the picking up of the testing voltages from the potentiometer R1 to R can be done by means of a rotating wiper the motor or ratchet of which is controlled by the armature nw or any equivalent therefor.
  • the terminals X and Y are essential elements whereas the other parts of the discriminating device could be replaced by equivalents.
  • the point Y is first tested with -34 volts, taken from the potentiometer R1-R'1 by way of front contact as and back contact b3. As --34 volts is still positive with respect to 42 v., the tube V1 and relay NW remain operative, enabling relay B1 to operate with a delay of a few milliseconds causing the test voltage on point Y' now to be changed to 38 v.
  • relay C1 is energized, but now point Y reaches the equilibrium voltage 42 volts over front contacts as, b3, 03 and back contact (is. Tube V1 now becomes inoperative and relay NW is reversed switching in its back contact so rapidly that relay D has no time to operate although its winding D1 is energized for a short moment over control 01.
  • relay NW de-energizes all relay windings A1, B1, C1, but these relays are kept in operation by their second windings A2, B2, C2 which are now connected to ground over back contact me and contacts as, b2, 02, respectively.
  • the operative relays are now: F, G, A, B and C and the register relays RR1 and RR4 are actuated: Viz: RR1: back contact me, contacts as, g; RR4; back contact nw, contacts a2, 64, c4;
  • the second winding F2 is now energized over front contacts nw and f1. All the other relays A, B, C are deenergized; that is why the marks in the are placed in brackets.
  • the duration of stay of contact nm on the back contact between the de-energization of winding NW1 and the energizing of winding NW2 depends mainly on the delay of relay F controlling contact is. This stay ought to be long enough to actuate the register relays over back contact nw, and contact (12, e1, but relay G has no time to operate since its energization only starts with the closing of contact f1, having the same delay as contact f3, and from this moment relay NW is faster than relay G.
  • relay NW restores all relays A to E to normal. This means that the test potential on point Y is restored to 30 v., and point X being still 40 v. because of the signal, tube V1 becomes inoperative and tube V1 operates winding NW1.
  • relay F is held in operation over front contact me, front contact f2, and winding F2, while relay NW is held operative by tube V1 and winding NW1.
  • tube V1, winding NW1 and winding F1 are rendered inoperative and the entire arrangement is prepared to receive a new signal.
  • relay NW now performs a second operation of short duration after the signals stop, as the 30 v. bias on X opposite the 42 v. still present on Y causes windings B1 and NW1 to operate until by de-energizing A (B and C) the test voltage on Y is restored to 30 v.
  • a selecting system responsive to diflerent electrical signals forming pairs each comprising two contiguous signal criteria comprising in combination: a selecting means; a potential discriminating device; means connected to said discriminating device for controlling said selecting means; means operated by said selecting means for communicating information to said discriminating device, any such information being responsive to a pair of two contiguous signal criteria; and means for a final discrimination between odd and even signal criteria.
  • a selecting system responsive to diflerent electrical signals forming pairs each comprising two contiguous signal criteria comprisingv in combination: a series of selecting relays; a potential discriminating device; means connected to said discriminating device for successively operating said relays; means operated by said relays for communicating information to said discriminating device, any such information being -responsive to a pair of two contiguous signal criteria; and means for a final discrimination between odd and even signal criteria.
  • a selecting system responsive to different signal voltages comprising in combination: a potential discriminating device; means for biasing device for successively controlling said relays meanyopera ted by said relays tobiassaid dis'woriinination' device a voltage responstve to either of two: contiguous signal voltages; anli for a flnal discrimination between odd ant even signal criteria;
  • a selecting system responsive to diil'erent signal voltages comprising in combination a first vacuum tube; a second vacuum tube; means to maintain a predetermined bias difference between said vacuum tubes; means for biasing one of said vacuum tubes to be inoperative on different pairs of two contiguous signal voltage values; and a. series of selecting relays successively operated by one of said vacuum tubes. said biasing means being controlled by said selecting relays.
  • a selecting system responsive to different electrical signal criteria including odd and even signal criteria comprising in combination, a series of selector relays; a first vacuum tube;

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Interface Circuits In Exchanges (AREA)
US22426A 1947-04-21 1948-04-21 Selecting system Expired - Lifetime US2582349A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL131743A NL65980C (nl) 1947-04-21 1947-04-21 Ontvanginrichting voor een electrisch seinstelsel

Publications (1)

Publication Number Publication Date
US2582349A true US2582349A (en) 1952-01-15

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ID=93155497

Family Applications (1)

Application Number Title Priority Date Filing Date
US22426A Expired - Lifetime US2582349A (en) 1947-04-21 1948-04-21 Selecting system

Country Status (6)

Country Link
US (1) US2582349A (fr)
CH (1) CH299886A (fr)
DE (1) DE839367C (fr)
FR (1) FR968456A (fr)
GB (1) GB656063A (fr)
NL (1) NL65980C (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2762038A (en) * 1952-06-11 1956-09-04 Underwood Corp Voltage measuring device
US10667893B2 (en) 2010-06-15 2020-06-02 The Procter & Gamble Company Methods for whitening teeth

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2088793A (en) * 1933-03-24 1937-08-03 Gen Railway Signal Co Centralized traffic controlling system for railroads
US2295534A (en) * 1940-08-02 1942-09-15 Ibm Automatic meter-reading apparatus
US2407286A (en) * 1942-11-07 1946-09-10 Rita Smith Kinkead Communication system
USRE22794E (en) * 1946-10-01 G deakin
US2454781A (en) * 1945-09-17 1948-11-30 Int Standard Electric Corp Matched potential control system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE22794E (en) * 1946-10-01 G deakin
US2088793A (en) * 1933-03-24 1937-08-03 Gen Railway Signal Co Centralized traffic controlling system for railroads
US2295534A (en) * 1940-08-02 1942-09-15 Ibm Automatic meter-reading apparatus
US2407286A (en) * 1942-11-07 1946-09-10 Rita Smith Kinkead Communication system
US2454781A (en) * 1945-09-17 1948-11-30 Int Standard Electric Corp Matched potential control system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2762038A (en) * 1952-06-11 1956-09-04 Underwood Corp Voltage measuring device
US10667893B2 (en) 2010-06-15 2020-06-02 The Procter & Gamble Company Methods for whitening teeth
US11793620B2 (en) 2010-06-15 2023-10-24 The Procter & Gamble Company Methods for whitening teeth
US12376951B2 (en) 2010-06-15 2025-08-05 The Procter & Gamble Company Methods for whitening teeth

Also Published As

Publication number Publication date
FR968456A (fr) 1950-11-28
NL65980C (nl) 1950-06-15
GB656063A (en) 1951-08-08
CH299886A (fr) 1954-06-30
DE839367C (de) 1952-05-19

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