DE68264C - Telephone cable, the cores of which are stranded with a periodically changing pitch - Google Patents

Telephone cable, the cores of which are stranded with a periodically changing pitch

Info

Publication number
DE68264C
DE68264C DENDAT68264D DE68264DA DE68264C DE 68264 C DE68264 C DE 68264C DE NDAT68264 D DENDAT68264 D DE NDAT68264D DE 68264D A DE68264D A DE 68264DA DE 68264 C DE68264 C DE 68264C
Authority
DE
Germany
Prior art keywords
pairs
slope
wires
cable
pair
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
DENDAT68264D
Other languages
German (de)
Original Assignee
TELEPHON-APPARAT-FABRIK Fr. Welles in Berlin s.o., Engel-Ufer 1
Publication of DE68264C publication Critical patent/DE68264C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00Communication cables or conductors
    • H01B11/02Cables with twisted pairs or quads
    • H01B11/04Cables with twisted pairs or quads with pairs or quads mutually positioned to reduce cross-talk

Landscapes

  • Communication Cables (AREA)

Claims (1)

KAISERLICHESIMPERIAL PATENTAMT.PATENT OFFICE. Bisher hat man die einzelnen Drähte von Fernsprechkabeln paarweise zusammengeschlagen , und zwar mit einer gleichmäfsigen Steigung. Diese Leitungspaare werden für den Schleifenbetrieb benutzt. Mit diesem paarweisen Zusammendrehen wollte man erreichen, dafs die beiden Leitungen eines Stromkreises im Verhältnifs zu den übrigen Drahtpaaren im Kabel möglichst in dieselbe relative Lage kommen, um so in den beiden Leitungen des Paares die Inductionsströme sich aufheben zu lassen.So far, the individual wires of telephone cables have been knocked together in pairs , with a steady slope. These line pairs are used for the Loop operation used. With this twisting in pairs one wanted to achieve that the two lines of a circuit in relation to the other wire pairs in the Cables come in the same relative position as far as possible, so that in the two lines of the Couple to cancel the induction currents. Sind nun die Drahtpaare mit derselben gleichmäfsigen Steigung, beispielsweise einer Umdrehung in 5 cm, zusammengeschlagen, so werden unter Umständen zwei Drahtpaare so zu liegen kommen, dafs die Drähte des einen Paares denjenigen des anderen Paares in jedem Punkte parallel liegen. In diesem Falle tritt trotz der Verseilung Induction auf.If the wire pairs are now with the same even slope, for example one Turn in 5 cm, when folded together, two pairs of wires may become like this come to rest so that the wires of one pair match those of the other pair in each Points are parallel. In this case induction occurs despite the stranding. Um dies nun zu verhüten, wird der Grad der Steigung beim Zusammendrehen des Adernpaares periodisch verändert, d. h. es treten in gewissen Zwischenräumen Maxima und Minima in der Steigung der Zusammendrehung des Adernpaares ein, wie dies aus der beiliegenden Zeichnung ersichtlich ist.,In order to prevent this now, the degree of the slope when twisting the pair of wires is periodically changed, d. H. maxima and minima occur in certain intervals in the slope of the twisting of the wire pair, as shown in the enclosed Drawing can be seen., Hierdurch wird ein Parallelismus der einzelnen Adern der Paare mit einander möglichst vermieden, da kaum anzunehmen ist, dafs bei einem Abstand von 2 bis 3 m vom Minimum bis zum Maximum der Steigung zwei Drahtpaare in einem Kabel eine auch mit Hinsicht auf diese Maxima der Steigung in jedem Punkte gleichartige Lage haben werden.As a result, a parallelism of the individual wires of the pairs with each other is possible avoided, since it can hardly be assumed that at a distance of 2 to 3 m from the minimum to the maximum of the slope two wire pairs in a cable one also with regard to these maxima of the slope in each point will have the same position. Die so zu Paaren verseilten Adern werden zu einem Kabel zusammengeschlagen und mit einem Bleimantel zum Schutz gegen Feuchtigkeit umgeben.The cores stranded in pairs are twisted together to form a cable and with surrounded by a lead jacket to protect against moisture. Um bei Schadhaftwerden des Kabels, z. B. bei Durchbohrung des Bleimantels, die vollständige Zerstörung des Kabels zu verhüten, können die einzelnen Adern in gewissen Abständen mit einer kurzen Umhüllung von irgend einem wasserdichten Isolationsmittel versehen werden, um das Vordringen der Feuchtigkeit in der Längenrichtung des Kabels zu verhüten. In order to get damaged in the cable, z. B. when drilling through the lead jacket, the full To prevent damage to the cable, the individual wires can be used at certain intervals provided with a short covering of some kind of waterproof insulation to prevent moisture from penetrating in the length direction of the cable. , Falls dann eine mechanische Beschädigung des Bleimantels eintritt, wird nur eine kurze Länge, in welcher die Adern mit Papier isolirt sind,. unbrauchbar, da die kurze Umhüllung mit wasserdichtem Isolationsstoff das Vordringen der Feuchtigkeit bis an die nächste mit Papier isolirte Kabellänge verhindert.If mechanical damage to the lead jacket then occurs, only a short one Length in which the veins are insulated with paper. useless because the short wrapping With waterproof insulation material, the moisture can penetrate to the next cable length insulated with paper prevented. Patent-Anspruch:Patent claim: Paarweise oder mehradrig verseilte Drähte, welche mit einer periodisch sich verändernden Steigung zusammengedreht sind, und die Vereinigung der in dieser Weise zusammengedrehten Drähte zu Kabeln, zum Zwecke der Verminderung des Mitsprechens oder der Induction. Wires stranded in pairs or with more than one core, which with a periodically changing Slope are twisted together, and the union of those twisted together in this way Wires to cables, for the purpose of reducing participation or induction. Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.
DENDAT68264D Telephone cable, the cores of which are stranded with a periodically changing pitch Expired - Lifetime DE68264C (en)

Publications (1)

Publication Number Publication Date
DE68264C true DE68264C (en)

Family

ID=341819

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT68264D Expired - Lifetime DE68264C (en) Telephone cable, the cores of which are stranded with a periodically changing pitch

Country Status (1)

Country Link
DE (1) DE68264C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1025028B (en) * 1955-02-11 1958-02-27 Maerkische Kabelwerke Ag Device for continuous change of twist and lay lengths when stranding telephone cores or groups of cores
DE971853C (en) * 1943-07-14 1959-04-09 Siemens Ag Telecommunication cable with several layers of the same lay direction and the same average lay length
WO2005045854A1 (en) * 2003-10-31 2005-05-19 Adc Incorporated Cable utilizing varying lay length mechanisms to minimize alien crosstald
CN101002289B (en) * 2003-10-31 2011-07-06 Adc公司 Cable utilizing varying lay length mechanisms to minimize alien crosstalk

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE971853C (en) * 1943-07-14 1959-04-09 Siemens Ag Telecommunication cable with several layers of the same lay direction and the same average lay length
DE1025028B (en) * 1955-02-11 1958-02-27 Maerkische Kabelwerke Ag Device for continuous change of twist and lay lengths when stranding telephone cores or groups of cores
WO2005045854A1 (en) * 2003-10-31 2005-05-19 Adc Incorporated Cable utilizing varying lay length mechanisms to minimize alien crosstald
AU2004288499B2 (en) * 2003-10-31 2009-12-10 Adc Telecommunications, Inc. Cable utilizing varying lay length mechanisms to minimize alien crosstald
CN101002289B (en) * 2003-10-31 2011-07-06 Adc公司 Cable utilizing varying lay length mechanisms to minimize alien crosstalk

Similar Documents

Publication Publication Date Title
DE3150031A1 (en) HIGHLY FLEXIBLE INSULATED ELECTRIC CABLE
DE68264C (en) Telephone cable, the cores of which are stranded with a periodically changing pitch
DE488109C (en) Crosstalk-free telephone cable
DE1465777A1 (en) Highly flexible insulated electrical line
DE2643974A1 (en) METHOD AND DEVICE FOR CONNECTING LADDERS TO CONNECTORS OF A DEVICE
DE905991C (en) Telecommunication cable, especially for multiple carrier frequency operation, with wire groups stranded in several bundles
DE1833652U (en) FLEXIBLE ELECTRIC CONDUCTOR.
DE2705743A1 (en) METHOD AND DEVICE FOR PLACING A WIRE LAYER ON STRANDED MATERIAL
DE546078C (en) Telecommunication cable composed of various types of conductors
DE3908830A1 (en) ELECTRIC CABLE
AT41534B (en) Self-supporting aerial cable.
DE667745C (en) Core group in a star-shaped arrangement for telecommunication cables
DE66649C (en) Electric airspace cable with twisted angular conductors
DE843437C (en) Thimble, especially for connecting the individual sections of a cable under tension
DE3127375C2 (en) SZ stranding machine for power cables and lines
DE736033C (en) Airspace-insulated electrical cables, in particular for the transmission of messages
DE892614C (en) Electrical lead wires surrounded by a flexible tube
CH335321A (en) Connection of two electrical conductors
DE219712C (en)
DE864897C (en) Bars for electrical machines and apparatus
DE102022121113A1 (en) COMBINED FLAT WIRE
DE559183C (en) Short-circuit-proof three-phase current cable
DE2611696A1 (en) Telecommunications cable with marked cores - has longitudinal marking grooves on outer periphery of core insulation
DE152025C (en)
DE20120342U1 (en) Highly flexible multi-core cable