US1871080A - Telephone system - Google Patents

Telephone system Download PDF

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Publication number
US1871080A
US1871080A US515478A US51547831A US1871080A US 1871080 A US1871080 A US 1871080A US 515478 A US515478 A US 515478A US 51547831 A US51547831 A US 51547831A US 1871080 A US1871080 A US 1871080A
Authority
US
United States
Prior art keywords
relay
series
impulses
contact
line
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
US515478A
Other languages
English (en)
Inventor
Peissner Alfons
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Application granted granted Critical
Publication of US1871080A publication Critical patent/US1871080A/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
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/32—Signalling arrangements; Manipulation of signalling currents using trains of dc pulses

Definitions

  • the present invention relates to suppression of impulse series in telephone systems.
  • the object of the invention is to provide an arrangement for absorbing one or more impulse series in automatic, telephone systems without the use of special relays. This is achieved in that the, impulsetransmitting relay remains energized by the switching devices associated with the repeater during the suppression of theimpulse series.
  • relay A has thereby a slow acting deenergization and remains energized while the contact 120 is closed during the impulse series.
  • the winding I of relay A is short-circuited at the first closing of this contact, while winding II of the relay is still connected to battery.
  • relay A responds and closes its contacts 2a, 8a, and 4a.
  • relay R constructed as a slow-acting relay, is energized.
  • relay R is constructedas a slowacting relay and keeps its contact 51' closed during a short period after the opening of contact 40;; earth, contacts 57" and 3a, winding of relayv 0, jack, plug, battery, earth.
  • a locking circuit-for relay C is closed over contact 60011 theline ll leading in to the final selector, for the'purpose of seizing the final selector andearthijng the line, governed by the impulse contact 2a.
  • relay A isener; gized as described in the above.
  • the succeeding impulse series are trans mitted over line 9 to the succeeding switch.
  • a plurality of impulse series can also be'suppre'ssed in this manner by the provision offslimple auxiliary means and instead of the short circuitingof one otthewindings of relayA, a locking winding could furtherbe provided, which maintainsthe impulse relay energized while the impulse winding itself is actuated, or.
  • a ,difierential winding can :be provided which has the described efi'ect.
  • a repeater In a repeater, an incoming and an outgoing line, a line "relay responsive to impulses received over saidincoming line and-adapted to repeat theimpulses over said'outgoingline, means for maintaining said relay energized during the first series of impulses so that said series is not repeatedover said Outgoingfline, and means responsive to the termination of said series of impulses for means.
  • an impulsing relay respon'sive'to digit impu1ses a second relay operated responsive to the first operation of said impulsing rela'y, afthird relay, contacts on said secon'd r'elay for preparing a circuit for said third relay, a normally short circuited Winding on said impulsing redisabling said first I means for transmitting a plurality of series of impulses tosaid relay, means controlled by said relay for repeating'said impulses, and
  • said last means including means for rendering said relay inoperative to respond to the impulses of said series.
  • a line relay means for transmitting a plurality, of series of impulses to said relay, an outgoing impulsing circuit, meanscontrolled by said relay for repeating saidimpulses over said outgoing impulsing circuit, means including a shortcircuited Winding on saidrelay for absorbing one of said series of impulses, and means efi'ective at the termination of said series for opening the short-circuitjofsa'id Winding and for preparing said outgoing impulsin'g cir- In vvitness whereof, I hereunto subscribe my name this 13th day of January, A. D. 1931.
  • an impulsing relay "responsive to digit impulses, a normally short-circuited y'vinding on said relay vfor maintaining said relay operated during the first series of impulses, a second'rela'y, means for energizing said second relay at thetermination of said series of impulses, and contacts on said second 'relay foropeniIig'said Ian

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Emergency Protection Circuit Devices (AREA)
US515478A 1930-05-17 1931-02-13 Telephone system Expired - Lifetime US1871080A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1871080X 1930-05-17

Publications (1)

Publication Number Publication Date
US1871080A true US1871080A (en) 1932-08-09

Family

ID=7746954

Family Applications (1)

Application Number Title Priority Date Filing Date
US515478A Expired - Lifetime US1871080A (en) 1930-05-17 1931-02-13 Telephone system

Country Status (2)

Country Link
US (1) US1871080A (de)
DE (1) DE553725C (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2665338A (en) * 1946-10-11 1954-01-05 Automatic Elect Lab Digit-absorbing repeater

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE929374C (de) * 1952-06-13 1955-06-27 Kabelindustrie Ag Schaltungsanordnung zur Stromstossunterdrueckung in Fernmelde-, insbesondere Fernsprechanlagen mit Waehlerbetrieb

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2665338A (en) * 1946-10-11 1954-01-05 Automatic Elect Lab Digit-absorbing repeater

Also Published As

Publication number Publication date
DE553725C (de) 1932-06-30

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