CH91414A - Insulated electrical cable with airtight, folded protective jacket made of metal. - Google Patents

Insulated electrical cable with airtight, folded protective jacket made of metal.

Info

Publication number
CH91414A
CH91414A CH91414DA CH91414A CH 91414 A CH91414 A CH 91414A CH 91414D A CH91414D A CH 91414DA CH 91414 A CH91414 A CH 91414A
Authority
CH
Switzerland
Prior art keywords
insulated electrical
airtight
metal
fold
protective jacket
Prior art date
Application number
Other languages
German (de)
Inventor
Adolf Daetwyler
Original Assignee
Adolf Daetwyler
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 Adolf Daetwyler filed Critical Adolf Daetwyler
Publication of CH91414A publication Critical patent/CH91414A/en

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/20Metal tubes, e.g. lead sheaths
    • H01B7/202Longitudinal lapped metal tubes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/08Making tubes with welded or soldered seams

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Insulated Conductors (AREA)

Description

  

  Isolierte elektrische Leitung mit luftdicht abschliessendem, gefalztem     Schutzmantel     aus Metall.    Vorliegende Erfindung betrifft eine iso  lierte elektrische Leitung mit einem Schutz  mantel, der aus einem Blechstreifen aus  widerstandsfähigem Metall besteht, der die  Isolation fest und luftdicht umschliesst. Er  findungsgemäss ist dieser Blechstreifen seiner  Naht entlang nach einer ersten     Falzung    ge  schweisst und nochmals gefalzt..  



  Eine solche     Leitung    hat den Vorteil, dass       sie.    überall, selbst an ganz nassen Orten, ver  legt werden kann, weil der Falz des Schutz  mantels durch das Schweissen hermetisch ge  schlossen ist. Es ist dadurch erreicht, dass  absolut keine Feuchtigkeit in das Innere der  Leitung eindringen und nachteilig auf die  Isoliermasse wirken kann, welch grosser  Nachteil zum Beispiel bei den bisher bekann  ten     Leitungen    mit nur gefalztem Metall  mantel vorhanden ist. Diese letzten Leitun  gen, ebenso wie die mit gelötetem Metall  mantel haben überdies den weiteren Nach  teil, dass, wenn sie gebogen werden, die Naht       leicht    aufspringt.

   Dies ist bei der den Er  findungsgegenstand bildenden Leitung nicht  der Fall, und deshalb lässt     sie    sich nicht nur    in beliebig grossen     -Längen    herstellen, son  dern auch in diesen verwenden und     legeri.     



  Die     Fig.    I und 8     zeigen    ein     Ausführungs-          beispiel    des     Erfindungsgegenstandes    in der  Längsansicht und im     Querschnitt,        während          Fig.    1 bis 3 in teilweiser     Längsansicht-.     und       Fig.    5 bis 7 im     Querselinitt        verschiedene     Stadien der Herstellung dieses Ausführungs  beispiels veranschaulichen.

       r          n.    sind die einzeln isolierten und in     ge-          ineinsaines    Isoliermaterial b     eizibelegten     Leitungsadern, die von     beliebigem    Quer  schnitt sein können. c ist der aus einem  Blechstreifen     bestehende    Schutzmantel, aus       widerstandsfähigem    Metall, z. B. Zink, Alu  minium, Messing, Kupfer     usw.     



  Dieser Mantel besitzt     ursprünglich        (Fig-.     1. und 5) zwei radial     abstellende        Rippen     <I>d\, d2</I> von     ungleicher    Höhe. In der Folge  wird     zunüehst    die höhere     Rippe        d2    mit ihrem  über die niedere     Rippe        dl    vorstehenden Teil       ilm    letztere     lieruingebogen        (Fi@o-.    2 und 6).

    In dieser     Stellung    werden die     beiden    Rippen  miteinander elektrisch verschweisst     und    zu           ein r    einzigen Rippe     vereinigt        (Fi < g.    3 und 7).       bi,--e    wird dann     seliliesslich    noch dicht auf       rleii    Unifang des Mantels     unigeleo,t        (Fi < o,.    1  und 8).

   Sie     harn        aber    auch nach innen     hin-          (-üigedrückt    werden, so dass der Mantel     aussvii     rund     bleibt.     



  Auf die beschriebene Weise erhält mau  einen luftdicht     abschliessenden    Mantel. Da       (as    Sehweissen, währenddem die     Rippen        d',     als Falz radial vom Schutzmantel ab  stehen, stattfindet, hat die entstehende       Wärme    keinen     schädigenden    Einfluss auf die       Isolation    der Leitung, ein     Vorteil,    der bei       keinem    andern Verfahren vorhanden ist.

    Da     ausserdem    zum Schweissen keine     Säuren          und    dergleichen gebraucht     werden,    tritt       mich    keine Beschädigung der Leitung durch       solehe    ein. Der neue Schutzmantel vereinigt;  in sich die beiden     Vorteile,    dass derselbe die  Leitung erstens vor mechanischen Einflüssen  bewahrt und zweitens diese     vollkommen     luftdicht abschliesst, beziehungsweise vor       atmosphärischen    Einflüssen schützt. Bei den       liislier    bekannten Leitungen, z. B.

   Bleikabel,  ist die     Leitun--    durch den Bleimantel wohl     luft-          dieht        abgesehlossen,    aber     nielit    genügend     ge-          selüit7t,        wr-il    der Bleimantel nicht die     nö-          ti-e    Festigkeit     gegen    mechanische     Einflüsse     hat.

       Daher    braucht es für die Leitung mit  Bleimantel noch einen besonderen Schutz,    zum Beispiel eine     Armatur    oder     ILal)-1-          l@anäle.     



  Die mit diesem neuen     Seliutzinantel    ver  sehene Leitung wird     infohe    der     erwähnten          Eigenschaften    an vielen     Orten    die     armierten     und nicht armierten     Bleikabel        verdrängten.          namentlieli    deshalb,     tveil    dieselbe in der       Fabrikation    viel     billi.glller        zia    stehen     lzninint     als     Bleikabel.  



  Insulated electrical cable with airtight, folded protective jacket made of metal. The present invention relates to an iso profiled electrical line with a protective jacket, which consists of a sheet metal strip made of resistant metal, which encloses the insulation firmly and airtight. According to the invention, this sheet metal strip is welded along its seam after a first fold and folded again.



  Such a line has the advantage that it. Can be laid anywhere, even in very wet places, because the seam of the protective jacket is hermetically sealed by welding. It is achieved that absolutely no moisture can penetrate the interior of the line and have a detrimental effect on the insulating compound, which is a major disadvantage, for example, with the previously known lines with only folded metal sheath. These last lines, as well as those with a soldered metal jacket, also have the further disadvantage that the seam easily cracks open when they are bent.

   This is not the case with the line forming the subject of the invention, and therefore it can not only be produced in any length, but also used in these and casually.



  FIGS. I and 8 show an exemplary embodiment of the subject matter of the invention in a longitudinal view and in cross section, while FIGS. 1 to 3 show a partial longitudinal view. and FIGS. 5 to 7 illustrate various stages of the production of this embodiment in the transverse line.

       r n. are the individually insulated and in common insulating material, which can be of any cross-section. c is the protective sheath consisting of a sheet metal strip, made of resistant metal, e.g. B. zinc, aluminum, brass, copper, etc.



  This jacket originally (Fig. 1 and 5) has two radially projecting ribs <I> d \, d2 </I> of unequal height. As a result, the higher rib d2 with its part protruding over the lower rib d1 is first bent in the direction of the latter (Figs. 2 and 6).

    In this position, the two ribs are electrically welded to one another and combined to form a single rib (FIGS. 3 and 7). bi, - e then becomes unigeleo, t (Fi <o,. 1 and 8) close to the unifang of the coat.

   They urin but also to be pressed inwards, so that the coat also remains round.



  In the manner described, an airtight jacket is obtained. Since (as visual welding takes place while the ribs d ', as a fold, protrude radially from the protective jacket, the heat generated does not have a damaging influence on the insulation of the line, an advantage that is not available in any other process.

    In addition, since no acids and the like are needed for welding, there is no damage to the line from this. The new protective mantle united; in itself the two advantages that it firstly protects the line from mechanical influences and secondly seals it completely airtight or protects it from atmospheric influences. In the liislier known lines, z. B.

   Lead cable, the line is sealed off in an air tight manner by the lead sheath, but is not sufficiently cleared so that the lead sheath does not have the necessary strength against mechanical influences.

       Therefore, a lead with a lead jacket needs special protection, for example a fitting or ILal) -1- l @anal.



  The cable provided with this new Seliutzinantel will replace the armored and non-armored lead cables in many places for the aforementioned properties. Namely, because they are much cheaper to manufacture than lead cables.

 

Claims (1)

PATENTANSPRUCH I: Isolierte elektrische Leitung mit die Isolation fest und luftdicht umschliessen dem, -efalztem Schutzmantel aus wider standsfähigem Metall, dadurch gekennzeich- net, dass dieser Schutzmantel seiner 1,Talit entlang nach einer ersten Falzung gesch\vei sst und nochmals gefalzt ist. PATENT CLAIM I: Insulated electrical line with the insulation firmly and airtightly enclosing the folded protective sheath made of resistant metal, characterized in that this protective sheath is welded along its first fold after a first fold and then folded again. PATENTANSPRUCH II: Verfahren zur I3erstellung einer isolier ten elektrischen Leitun nach Patent- ansprueh I, dadurch gekennzeichnet, dass rIer Sehutzmantel seiner Naht entlang- zurrt mit zwei radial stehenden Rippen von un gleicher Höhe versehen wird, PATENT CLAIM II: Method for producing an insulated electrical line according to patent claim I, characterized in that the protective jacket is provided with two radially standing ribs of unequal height along its seam, dass der erste Falz durch Umbiegen der höheren Eippe über die zweite und der zweite Falz durch der so zusammengesehweissten Rippen auf den Mantelumfang gebildet wird. that the first fold is formed by bending the higher rib over the second and the second fold is formed by the ribs welded together in this way on the circumference of the jacket.
CH91414D 1920-12-28 1920-12-28 Insulated electrical cable with airtight, folded protective jacket made of metal. CH91414A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH91414T 1920-12-28

Publications (1)

Publication Number Publication Date
CH91414A true CH91414A (en) 1921-11-01

Family

ID=4348770

Family Applications (1)

Application Number Title Priority Date Filing Date
CH91414D CH91414A (en) 1920-12-28 1920-12-28 Insulated electrical cable with airtight, folded protective jacket made of metal.

Country Status (1)

Country Link
CH (1) CH91414A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE747932C (en) * 1934-07-21 1944-10-20 Tubular wire with a smooth folded jacket and a protective cover against moisture and chemical attack
US2527172A (en) * 1944-11-24 1950-10-24 Glover & Co Ltd W T Reinforced soldered-seam metal sheathed cable

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE747932C (en) * 1934-07-21 1944-10-20 Tubular wire with a smooth folded jacket and a protective cover against moisture and chemical attack
US2527172A (en) * 1944-11-24 1950-10-24 Glover & Co Ltd W T Reinforced soldered-seam metal sheathed cable

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