US2490048A - System and process for the remote control of selectors or similar units - Google Patents

System and process for the remote control of selectors or similar units Download PDF

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Publication number
US2490048A
US2490048A US766692A US76669247A US2490048A US 2490048 A US2490048 A US 2490048A US 766692 A US766692 A US 766692A US 76669247 A US76669247 A US 76669247A US 2490048 A US2490048 A US 2490048A
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Prior art keywords
selector
relay
contact
contacts
relays
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Expired - Lifetime
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US766692A
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English (en)
Inventor
Gohorel Fernand Pierre
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International Standard Electric Corp
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International Standard Electric Corp
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    • 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
    • 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
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Definitions

  • a selector may be directed, from a remotely located control device, to a given position (or group of positions).
  • the selector is equipped with a set of marking contacts whichare scanned by a suitable scanning device, each position (or each group of positions) being characterized by a potential, the nature of a current or the phase angle of an alternating current applied to the corresponding marker contact. Means also are provided for the rotation of the selector to continue until such time as there exist a given relationship between the electrical condition of the marker contact and that of the control or directing device.
  • any relay which attracts its armature in the selector positioning unit, during the scanning of the marker contacts, while the scanning or hunting member passes on a position (or group of positions) at which the selector is not supposed to stop, will not immediately drop its armature as the scanning member leaves the position (or group of positions) just alluded to.
  • the speed of said device be of sufficient value, which is prac tically the case of selectors, such a relay thus may cause false positioning during the scanning of the following marker contacts.
  • the marking potentials are so arranged that, bearing in mind the scanning order of the corresponding marker contacts, it be not necessary to energize any relays upon passing the position (or group of positions) which precedes the one at which the selector must be stopped.
  • n marker contacts of .11. positions be designated by l, 2, 3, 4'. n, counting in the order of their scanning they are connected to the potential steps according to the following rule: contact I to 0 potential, contact 2 to are rounded off to the nearest integer below the actual figure obtained.
  • Said relays are connected, on the one hand, with the scanning device of the selector marker contacts and, on the other hand, with a potential lever l or step which depends on the position at which the selector is to be stopped, provisions being made for them to be energized only by a current circulating in a given direction.
  • the voltages of the positive sources are all different from one another but may be respectively equal to the voltages of the negative sources.
  • One thusi provides 2 steps of positive potentials and steps of negative potentials.
  • two consecutive groups of marker contact groups are connected to two positive *(or negative) steps in such a manner that the step having the lower voltage precedes, in the direction of scanning, the one having the'higher voltage.
  • These relays are connected, on the one hand, to the scanning device of the selectorand, on the other hand, to the common .point of all the current sources and the current direction for which they are attracted, as well as their attraction .or non-attraction'combinations, depend .onthe group of lines or-on the line to which the :selector is to be dirooted.
  • the marker contacts of the selectors in their order of scanning, are alternately connected to a direct current potential step and to a potential step obtainedby means of the superimposition-of the alternating current source on the direct current source used for the preceding marker contact.
  • the order of the direct potential steps ischosen in the manner which has been outlined above with relation to another process.
  • the various potential steps obtained by the superimpositionfto a direct current,'of each one'of the alternating current sources are connected'in succession to a series of the selector marker contacts before another direct current potential level is connected. to the next contact in line.
  • the selector is divided into groupsyeach of which comprises a certain number of positions, the first of which in turn is marked by a potential level or step, and to which the selector may be directed or positioned by the controllingor directing device in accordance with one of the processes which have already been described above.
  • the controlling or directing device sends out "as many impulses asare'needed to cause the selector to 'movea'he'ad'to the final position to 'which it is tobe directed.
  • the controlling or directing device of the'selector is placed in series; for the preliminarydirection, with-a rectifier which passes only one current alternation and a sourceof alternating current'while, for the final positioning or directing, itis connected to an imp-ulsing contact andasource of direct current.
  • relays A and B are provided in directing device 0. These relays'are inserted in a circuit which is connected, on the one hand, to the scanning device of selector S, namely wiper F and, on the other hand, to unilaterally conducting elements Q1 and Q2. According to the number received by the controlling or directing element, one of contacts sal to $115 is closed.
  • Relay A can attract its armature when there is a potential difierence equal to u and relay B can attract its own armature only when such potential difierence as is present is equal to Zn.
  • Marker contacts l to 5 of selector S are connected as shown on the figure.
  • relay A completes, by way of rest contact bl of B, the circuit of relay C, which causes, in the directing or controlling unit, the operations which follow the stopping of the selector.
  • relay B which had been energized at position 1, drops its armature at position 2 or, in other words, there is no need for any energized relay at the position which precedes the one to which the selector must be directed.
  • stopping is effected by the energizing of relay A, at position 1, through Ql (U4); at position 2, through Q2 (U2) at position 4, through Q2 (Ul and at position 5 through Ql (U2). Furthermore, there can be no false positioning.
  • Figure 2 shows a variation on the process of Figure 1, which makes it possible to reduce the number of the wires needed between the direct ing or controlling unit and the selector.
  • a certain number of batteries U3, U2, Ul, U'l, U2, etc. are arranged in selector S, having the same voltage u and connected in series, the common point between batteries UI and U'l being grounded.
  • the negative potential steps or levels are connected respectively to the bank contacts associated with wiper F of selector S on odd positions 1, 3 and 5, while the positive potential steps or levels are respectively connected to positions 2 and 4.
  • Electra-magnet R then causes, according to a well known process, the progression of its wipers in automatic rotation.
  • said wipers reach position 3
  • the following circuit is completed: negative terminal of battery U2, bank contact and wiper F at position 3, unilaterally conducting element Q2, contact sa3, left hand windings of relays A and B in series, ground and, in selector S, ground and the positive terminal of battery Ui.
  • Relay A has been so designed that it attracts its armature only in the presence of a voltage equal to 2u at least, if it is energized on its left hand winding and to u if it is energized on both of its windings.
  • relay B has been so designed that it is energized by a voltage equal to Bu at least, if working on its left hand winding and 21L if working on both windings. Relay A thus will be the only one to attract its armature, since the above outlined circuit closes through two batteries, each of which has an E. M. F.
  • Relay C is energized and causes, within the directing or controlling unit; the various operations which follow, the stopping of the selector.
  • Relay C being of the delayed attraction type, remains at rest, even if its circuit has temporarily been completed at b2 and a2, due to the non-simultaneity of the operation of relays A and B.
  • the selector passes position 5
  • relays A and B the circuits of which are completed only through battery Ul, remain at rest and the progression of said selector continues.
  • batteries U'I and U'2 are the ones to intervene, but the circuit of relays A and B can not be compl ted :clueo the. presencaoi nle laterally conduc in I elemen Q2.
  • Figure 3 shows a device which makes it pos sible to direct a selector to 211. positions by making use of only 11. batteries,
  • the negative terminals of-batteries U1, U2, U3 are respectively connected to positions 1, 5 and 9 of selector S while the positive terminals of Ul, U2, U'S are connected to positions 3, 7 and 11.
  • Each even numbered position is connected to the odd position which immediately. precedes; it through an alternating current generator which may, by way of example, be one of the windings of the secondary of a transformer T.
  • Rela A has been so designed as to attract its armature with a voltage equal at least to a2, if its left-hand wind ing is the only one in the circuityand with a voltage equal to 11.3 at least, if bothwindingsare functioning.
  • Relayv B has been designed to at?
  • relays A and B on the left-hand winding are, respectively, a2 and ul, so that relay A is the only one to attract its armature, closing :at: a2 the vfollowing circuit of relay C: battery, relay C, restcontact (12, associated with relay D, contact 3225, Work contact o2, rest contact 122.. associated with relay B, ground.
  • Relay C is energized causing, in the directing or controlling unit,.the various operations which follow the stopping of the selector.
  • the selector has to be directed to an even numbered position, position 6 for instance. Contacts safi, sbfi, s06, sdfi, sefi, are closed.
  • the selector moves on to position 6, the following circuit is completed: negative-.terminal'of battery U2, winding t3, bank contact and wiper F of the selector at position 6, unilaterally conducting element Ql, contact sat, left-hand winding of relays A and B, connected in series, ground; and, in selector S, ground, positive terminal of battery U2 with, in parallel across the circuit outlined above, contact seB, capacitor C, relay D through bridge rectifiers Q3 to Q6, ground.
  • Relay A is the only one to be energized, to the exclusion of relay B, for reasons explained elsewhere; the alternating current, on its side, causes the operation of relay D, after its rectification by bridge rectifier Q3, Q4, Q5, Q6.
  • the drive circuit of the selector is open at al and dl.
  • Relay C is energized by way of: battery, relay C, work contact d2, contact sbli, work contact (12, rest contact b2 and ground.
  • stopping of the selector is effected at position 1, by the energizing of relay B through its left-hand winding, through battery UI and rectifier Ql, at position 3, by the energizing of relay B on its left-hand winding through Ul and Q2, at position 5, by the energizing of relay A on the left-hand winding through U2 and Ql, at position 7 by the energizing relay A on its left-hand winding through UZ and Q2, at position 9, by the energizing of relay A on both of its windings through U3 and Ql, on position 11, by the energizing of A on its two windings through U'3 and Q2.
  • stopping is effected as at the odd numbered position which immediately precedes it with, in addition, the energizing of relay D.
  • the selector can not stop at a position different from the one required; either the direction of flow of the current is such that neither relay A nor relay B can be energized and rotation is continued through rest contacts al and bl, or else the battery tension applied to the circuit is too high, which causes relay B to be energized and the rotation of the selector to continue by way of work contact bl; or else the voltage of the battery placed on the circuit is too low, neither of relays A and B being able to attract their respective armatures and rotation being continued by Way of cl or bl, or again the position'on which the selector is even, rather thanodd numbered, which causes relay D to be energized through one of contacts a3 or b3 and the rotation of the selector still to continue through work contact dl; or, finally the position passedby the. selector is odd, rather than even numbered, in which case relay D remains at rest and causes rotation to be continned by way of its rest contact dl.
  • Figure 4 shows a directing or controlling device which embodies a combination of the processes described above and the process whereby directing is effected through the sending out of impulses.
  • the selector illustrated comprises a certain number of positions which are grouped in tens; for the clarity of the illustrations, only tens numbers 1, 2 and 3 have been shown, as well as only the four first positions of each ten.
  • the first positions of each ten, say 10, 20 and 30, are connected to batteries U3, U2, Ul U I, UZ, which are arranged similarly to the manner in which they are shown in Fig. 2, although any one of the above described processes might be used, while the bank contacts associated withwiper F at the other positions are insulated.
  • the control unit 0 may be similar to that shown in Fig.
  • the electro-magnet R. is not selfinterrupting and is connected to ground, that the armatures associated with contacts al and bl are connected together and through a unilaterally conducting element Q1 and generator GeZ to ground, and that the lead connected to the electro-magnet R is also connected to the work contact z'l of a relay I, the associated armature being connected through 'a battery Ui to ground.
  • selector S When said selector is connected to director or control unit 0, the following circuit is completed: ground, drive electro-magnet R of selector S, contacts s02,
  • a selector switch comprising a test wiper, a plurality of test terminals, and electric driving means for said switch, a plurality of potential sources connected to said test terminals, a first test relay.
  • both relays will not break the .icircuitfofsaid switch driving means, and marking .meansincludinga pair .of..contacts .for each test terminal-10f said switch .and unidirectional current devices formarking a position of the .switch IOISBIECtiOIL'thE windings of said relays and said :marking means being. serially connected between saidztest wiper. and saidrpotential' sources, the
  • test terminals are test terminals.
  • cording tozclaimfl in.which the markingmeans is .:connected' :by: at least-"one lead to a junction point-between two ofsaid sources.
  • test relays are each provided with two windings, the connections being such that certainof said marking contacts connect one winding of each relay in series while certain otherof said marking contacts connect all of said windingsinseries, there being a single connection between said common point and said marking contacts, and .in .whichiadditional marking' contacts are provided toreverse the operation of saidtest relays with respect to said switch driving means, and in which .is provided a plurality of potential sources having different characteristics from said first-mentioned potential sources, certain of said test terminals being connected to one of said first potential sources and one of said second potential sources in series, a third test relay connected between said test wiper and the common point on said first potential sources, said relay being under control of said first and second test relays, means for making said third test relay responsive only to one of tional controlling means is provided responsive only to said alternating current sources for further
  • a third relay is provided under the control of the first and second test relays for performing an operation when the selector switch comes to rest at the desired position.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Keying Circuit Devices (AREA)
  • Relay Circuits (AREA)
US766692A 1945-11-06 1947-08-06 System and process for the remote control of selectors or similar units Expired - Lifetime US2490048A (en)

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FR921189X 1945-11-06

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US2490048A true US2490048A (en) 1949-12-06

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US (1) US2490048A (US06262066-20010717-C00422.png)
FR (1) FR921189A (US06262066-20010717-C00422.png)
GB (1) GB655941A (US06262066-20010717-C00422.png)
NL (1) NL74858C (US06262066-20010717-C00422.png)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2744162A (en) * 1949-06-24 1956-05-01 Int Standard Electric Corp Selection system for electrical circuits or equipments
US2926216A (en) * 1956-10-26 1960-02-23 Arthur D Alexander Multiple pulse communication system
US3210615A (en) * 1962-06-25 1965-10-05 Automatic Elect Lab Control circuit
US3317895A (en) * 1962-03-14 1967-05-02 Int Standard Electric Corp Control of remote telephone and like equipments
US3416137A (en) * 1963-11-29 1968-12-10 Automatic Switching Ltd Electrical traffic analysers

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2376346A (en) * 1943-06-21 1945-05-22 Int Standard Electric Corp Telecommunication system
USRE22794E (en) * 1946-10-01 G deakin
US2423078A (en) * 1943-10-20 1947-07-01 Bell Telephone Labor Inc Harmonic generator
US2424585A (en) * 1941-03-07 1947-07-29 Int Standard Electric Corp Telecommunication system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE22794E (en) * 1946-10-01 G deakin
US2424585A (en) * 1941-03-07 1947-07-29 Int Standard Electric Corp Telecommunication system
US2376346A (en) * 1943-06-21 1945-05-22 Int Standard Electric Corp Telecommunication system
US2423078A (en) * 1943-10-20 1947-07-01 Bell Telephone Labor Inc Harmonic generator

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2744162A (en) * 1949-06-24 1956-05-01 Int Standard Electric Corp Selection system for electrical circuits or equipments
US2926216A (en) * 1956-10-26 1960-02-23 Arthur D Alexander Multiple pulse communication system
US3317895A (en) * 1962-03-14 1967-05-02 Int Standard Electric Corp Control of remote telephone and like equipments
US3210615A (en) * 1962-06-25 1965-10-05 Automatic Elect Lab Control circuit
US3416137A (en) * 1963-11-29 1968-12-10 Automatic Switching Ltd Electrical traffic analysers

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FR921189A (fr) 1947-04-29
NL74858C (US06262066-20010717-C00422.png)
GB655941A (en) 1951-08-08

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