US3089011A - Code relay selector - Google Patents

Code relay selector Download PDF

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Publication number
US3089011A
US3089011A US30313A US3031360A US3089011A US 3089011 A US3089011 A US 3089011A US 30313 A US30313 A US 30313A US 3031360 A US3031360 A US 3031360A US 3089011 A US3089011 A US 3089011A
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US
United States
Prior art keywords
armature
lifting
arm
bar
pivot point
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
US30313A
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English (en)
Inventor
Alexandersson Harald Valdemar
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Application granted granted Critical
Publication of US3089011A publication Critical patent/US3089011A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H67/00—Electrically-operated selector switches
    • H01H67/22—Switches without multi-position wipers
    • H01H67/32—Switches without multi-position wipers having a multiplicity of interdependent armatures operated in succession by a single coil and each controlling one contact or set of contacts, e.g. counting relay
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H67/00—Electrically-operated selector switches
    • H01H67/22—Switches without multi-position wipers
    • H01H67/26—Co-ordinate-type selector switches not having relays at cross-points but involving mechanical movement, e.g. cross-bar switch, code-bar switch

Definitions

  • the invention relates to cross bar switch arrangements known as code relay selectors.
  • An arrangement of this kind is mainly characterized by anumber of, for example ten, connecting magnets with associated armatures, mounted in a row on a common mounting plate, andby .a code system comprising bars disposedlengthwise along the connecting relays, which bars at one lengthwise edge are provided with grooves, into which lifting rockers may engage. The lifting rockers selected by thecode system are then liftedby the armature and-actuate the associatedcontacts of a multiple. More specifically, there is known a code relay selector, where the contacts are actuated by the armature in its released position, that is,
  • Said construction has the disadvantage that the magnets must be made comparatively; strong because the. load is greatestwhen the armature is in a released position and thus its force of attraction is smallest.
  • the attraction force characteristic ought to follow as much as possible the load characteristic.
  • Thepurpose of this invention is to provide a reliable construction that fulfills this requirement. This is substantially achieved in such a way that said armatures are arranged to actuate the contact springs by means of a knee-joint system which is so constructed that in the released position of an armature it lies in or almost in its self-locking position.
  • An especially advantageous construction is obtained when the knee-joint consists of a lifting iron strip, which is connected to the armature and common to the lifting rockers of the armature, and of the lifting rocker selected by the code system.
  • FIG. 1 shows the switching device in its rest or inactive position in which the armature of the device is released.
  • FIG. 2 shows the armature attracted and the code bars in a setting different from that of FIG. 1.
  • FIG. 3 shows the armature attracted .and the code bars in the same setting as in FIG. 1, and
  • FIG. 4 shows the armature released and the code bars in the same setting as in FIG. 2.
  • the selector indicated in the drawing is in conformity with that shown in the British Patent 832,865 assembled on a mounting plate 2 extending along the length of the entire selector.
  • the mounting plate is disposed perpendicularly to the plane of the drawing and mounts a number of connecting relays 1 with the associated armatures 3.
  • Each multiple consists of a number of wire spring sets situated close to each other and provided with contact springs situated over each other.
  • the springs of a group are actuated by means of a lifting bar 13 belonging to said group.
  • Below each lifting bar there is provided an L-shaped rocking arrangement 7 is pivotally mounted on a shaft' 9 extending along the length of the selector.
  • a number ofmovable code bars 12 are extending along the'length of the selector.
  • These bars consist'of thin steel strips which attheir upperedgcs are provided with grooves according to a particular code system which in known manner for each connecting relay is arranged in such away that the grooves in all the barsin front of a particular lifting barcoincidewith a certain predetermined position on the bars.
  • the bars are controlled by a number ofnot shown code relays.
  • the armature actuates-directly the lifting rockerv which thereby in its turn actuates the associated lifting bar.
  • Said lifting strip is. extending. perpendicularly to the plane of the drawing along the' length of allthe lifting rockers 7, for example. .17, asso-v ciated with anarmature;
  • the lifting strip 6 is mounted.
  • FIG. 1 there is shown how the third of the six code bars is moved so that it has a tooth in front of the arm 15 of the lifting rocker which arm is turned to the side.
  • the other five code bars show instead grooves right in front of the arm 15. If now the magnet 1 is energized, the armature 3 will be actuated and the lifting strip 6 is drawn aside, that is, with its upper parts to the left.
  • the lifting rocker 7 then tries to follow but is stopped because the arm 15 is caught on the third code bar. Then the position will be achieved which is shown in FIG. 3. When hereafter the armature is released, the position of FIG. 1 returns. If now the code bar 3 is moved so that all code bars are situated with their grooves in front of the arm 15 of the lifting rocker, the position according to FIG. 2 will be obtained.
  • the lifting rocker 7 follows the lifting strip 6 to a completely swung out position when the armature 3 is actuated. The lifting strip will then engage a groove 16 in the lower end of the lifting rocker and forms a knee-joint system with the same.
  • a switching device comprising at least a pair of relatively movable switch contacts, one contact of the pair being a spring contact, an actuating magnet including a movable armature, a lifting bar coacting with said spring contact for controlling the switching position thereof by the position of lift of the lifting bar, and transmission means coupling said armature with the lifting bar for moving the same into a lifted position in response to a movement of the armature into a position of release from the magnet, said bar in its lifted position deflecting the spring contact into engagement with the other contact of said pair, said transmission means including a first arm mounted pivotally about a stationary pivot point, a second arm mounted pivotally about a second stationary pivot point and longitudinally displaceable within predetermined limits With reference to its pivot point, said second arm coacting with said lifting bar to lift the same into a predetermined position of displacement with reference to its pivot point, said first and second arms coacting with each other to displace the second arm into said predetermined position by a pivotal movement of the first arm, said bar in its lifted position de
  • a switching device wherein said first arm and said second arm are engageable with each other at their respective free ends to effect movement of the first arm by the pivotal movement of the second arm, said arms and said lifting bar occupying positions of substantially perpendicular alignment in said lifted position of the bar, thereby effecting locking of the arms and the bar.
  • a switching device wherein a spring coacts with said armature to urge the same from an attracted position into the release position.
  • a switching device comprising a plurality of pairs of switch contacts in row arrangement, a second arm being provided for each of said pairs, said first arm being in the form of a bar extending lengthwise of said second arms and common to all of the second arms.
  • a switching device comprising selecting means including a settable code bar for each of the second arms, each of said code bars coacting with the respective second arm to control the position thereof with reference to the first arm for releasing and locking, respectively, the second arm for coaction with the first arm in accordance with the setting of the code bars.

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  • Push-Button Switches (AREA)
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US30313A 1959-06-02 1960-05-19 Code relay selector Expired - Lifetime US3089011A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE523559 1959-06-02

Publications (1)

Publication Number Publication Date
US3089011A true US3089011A (en) 1963-05-07

Family

ID=20266005

Family Applications (1)

Application Number Title Priority Date Filing Date
US30313A Expired - Lifetime US3089011A (en) 1959-06-02 1960-05-19 Code relay selector

Country Status (4)

Country Link
US (1) US3089011A (US06262066-20010717-C00315.png)
DE (1) DE1115310B (US06262066-20010717-C00315.png)
GB (1) GB935348A (US06262066-20010717-C00315.png)
NL (2) NL252250A (US06262066-20010717-C00315.png)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5140117A (en) * 1991-02-28 1992-08-18 Pmc Engineering Company, Inc. Two-link, trip-free mechanism for use in a switch assembly

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US675865A (en) * 1899-11-22 1901-06-04 Richard L Young Automatic circuit-breaker.
US1050021A (en) * 1900-11-12 1913-01-07 Gen Electric Electric switch.
US1543825A (en) * 1921-10-06 1925-06-30 Western Electric Co Switching device
US1563658A (en) * 1922-06-01 1925-12-01 Western Electric Co Line switch
US2490963A (en) * 1946-04-29 1949-12-13 Hofgaard Rolf Relay
US2714631A (en) * 1949-12-01 1955-08-02 Hartford Nat Bank & Trust Co Switching device for use in automatic telephone system or a similar system
US2784275A (en) * 1953-06-01 1957-03-05 Paragon Electric Company Current interrupting switch

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1189070A (fr) * 1956-12-29 1959-09-29 Ericsson Telefon Ab L M Sélecteur à relais de code

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US675865A (en) * 1899-11-22 1901-06-04 Richard L Young Automatic circuit-breaker.
US1050021A (en) * 1900-11-12 1913-01-07 Gen Electric Electric switch.
US1543825A (en) * 1921-10-06 1925-06-30 Western Electric Co Switching device
US1563658A (en) * 1922-06-01 1925-12-01 Western Electric Co Line switch
US2490963A (en) * 1946-04-29 1949-12-13 Hofgaard Rolf Relay
US2714631A (en) * 1949-12-01 1955-08-02 Hartford Nat Bank & Trust Co Switching device for use in automatic telephone system or a similar system
US2784275A (en) * 1953-06-01 1957-03-05 Paragon Electric Company Current interrupting switch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5140117A (en) * 1991-02-28 1992-08-18 Pmc Engineering Company, Inc. Two-link, trip-free mechanism for use in a switch assembly

Also Published As

Publication number Publication date
GB935348A (en) 1963-08-28
NL252250A (US06262066-20010717-C00315.png)
DE1115310B (de) 1961-10-19
NL127220C (US06262066-20010717-C00315.png)

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