US2128434A - Spacing member - Google Patents

Spacing member Download PDF

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Publication number
US2128434A
US2128434A US79478A US7947836A US2128434A US 2128434 A US2128434 A US 2128434A US 79478 A US79478 A US 79478A US 7947836 A US7947836 A US 7947836A US 2128434 A US2128434 A US 2128434A
Authority
US
United States
Prior art keywords
conductor
perforation
cable
spacing member
conductors
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
US79478A
Other languages
English (en)
Inventor
George A Seeley
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Priority to US79478A priority Critical patent/US2128434A/en
Priority to GB616/37A priority patent/GB478768A/en
Priority to FR821126D priority patent/FR821126A/fr
Priority to BE421254D priority patent/BE421254A/xx
Application granted granted Critical
Publication of US2128434A publication Critical patent/US2128434A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
    • H01B11/1834—Construction of the insulation between the conductors
    • H01B11/1856—Discontinuous insulation
    • H01B11/186—Discontinuous insulation having the shape of a disc

Definitions

  • This invention relates to a spacing member and more particularly to an insulating spacing member for electrical conductors.
  • An object of the present invention is to provide a spacing member for such structures which shall be simple and easy to place in position, shall retain its position securely when placed and shall be so formed as to resist permanent deformation both while being placed and during the subsequent life of the cable.
  • a characteristic embodiment of the invention contemplates a flat, generally circular disc to be applied to or mounted on a cylindrical conductor by means of a perforation of the disc to receive the conductor and a specially formed slot or passageway cut from the outer periphery of the disc to the perforation, the slot comprising an angularly tapered or convergingly walled entrance from the disc periphery and a parallel sided passage therefrom to the perforation.
  • Fig. l is a view in side elevation of a spacing member constructed in accordance with the invention.
  • Fig. 2 is a broken view in perspective of such members used in a'coaxial conductor cable.
  • the spacing member 20 disclosed in Fig. 1 IS a 40 generally circularly disc shaped piece of suitable insulating material having a central circular perforation 2i and a radial passageway 22 from the outer periphery 23 to the perforation.
  • the passageway 22 comprises a tapering entrance portion 24 at its outer end and a parallel sided portion 25 leading from the entrance to the perforation.
  • the material of which the member 20 is made will vary somewhat with the nature of the conductors with which it is to be associated and the ultimate service for which the combination is destined. Generally it will be an insulating material having sumcient elasticity to permit it to spring and allow an unyielding conductor 28 of diameter equal to or slightly greater than the diameter of the perforation 2i to be forced sidewise through the entrance 2 and the passage 25 into the perforation into the position shown in Fig. 2.
  • the member 20 may well be made of rubber of a suitable degree of hardness from a quite soft, elastically yielding and frictionally clinging kind to a thoroughly hard ebonite type.
  • an artificial resin'either alone or combined with a fabric, fiber, paper or other analogous base is 10 preferable. Again it may well be made from other suitable products such as Celluloid, casein plastics, horn, paper impregnated with shellac, cellulose acetate or other cellulose plastics, shellac plastics, or other material of suitable elec- 15 trical and physical properties. In any such instance the member may be molded or may be punched from a sheet of the material.
  • spacing members 20 are put on a central conductor 26 which may be a solid wire or rod, or a cylindrical tube, or an intertwisted or interbraided group of small wires or other suitable conductive strand having a generally cylindrical outer surface.
  • the members 20 are put in place on-the conductor 26 by forcing them edgewise transversely over the conductor or by pushing the conductor radially into the members. Generally this is done in such fashion that the passages 22 are oriented successively in dif- 0 ferent radial directions along the conductor, and the successive members are spaced apart along the conductor at whatever predetermined intervals are the optimum for the purpose in hand.
  • being originally a trifle smaller in diameter than the conductor 26, the member 20 when forced into place on the conductor grips the same tightly without need for any staking or other deformation of the conductor to hold the member against sliding thereon.
  • the weakest part of this grip is naturally at the points or corners 21 where the passage 25 enters the perforation 2i.
  • the coaxial conductor pair is completed by forming the outer conductor 28 over the outer periphery 23 of the members 20 as a shell or tube coaxial with the conductor 28 and spaced and u What is claimed is:
  • a coaxial conductor cable having an outer and an inner conductor, an insulating member interposed between the conductors of the cable and formed and proportioned to have a peripheral surface to abut against the inner surface of the outer conductor. an axial perforation to receive the inner conductor and spaced from the peripheral surface. and a slot extending from the surface to the perforation and comprising an outer tapering portion between converging walls and an inner straight portion between parallel walls.
  • a coaxial conductor cable having an outer and an inner conductor, an insulating member interposed between the conductors of the cable and formed and proportioned to have a peripheral surface to abut against the inner surface of the outer conductor, an axial perforation toreamass huthemernbersll.
  • a coaxial conductor cable having an outer and an inner conductor, an insulating member interposed between the conductors of the cable and formed and proportioned to have a peripheral surface to abut against the inner surface of the outer conductor, an axial perforation to receive the inner conductor and spaced from the 'peripheralsurfaoaandaslotextendingfromthe surface to the perforation and having its defining walls convex toward each other so that the corners formed where the slot enters the perforation are substantially supported by material behind the same.
  • a coaxial conductor cable having an outer and an inner conductor, an insulating member interposed between the conductors of the cable and formed and proportioned to have a peripheral surface to abut against the inner surface of the outer conductor, an axial perforation to receive the inner conductor and spaced from the peripheral surface, and a slot extending from the surface to the perforation and having its defining walls convex toward each other so that the corners formed where the slot enters the perforation are substantially supported by material behind the same, the entrance of the slot into the perforation being of less width than the diameter of the perforation.

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  • Communication Cables (AREA)
  • Waveguide Aerials (AREA)
US79478A 1936-05-13 1936-05-13 Spacing member Expired - Lifetime US2128434A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US79478A US2128434A (en) 1936-05-13 1936-05-13 Spacing member
GB616/37A GB478768A (en) 1936-05-13 1937-01-08 Improvements in or relating to coaxial conductor cables and spacing members therefor
FR821126D FR821126A (fr) 1936-05-13 1937-04-26 Séparateur isolant
BE421254D BE421254A (enrdf_load_stackoverflow) 1936-05-13 1937-05-31

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US79478A US2128434A (en) 1936-05-13 1936-05-13 Spacing member

Publications (1)

Publication Number Publication Date
US2128434A true US2128434A (en) 1938-08-30

Family

ID=22150821

Family Applications (1)

Application Number Title Priority Date Filing Date
US79478A Expired - Lifetime US2128434A (en) 1936-05-13 1936-05-13 Spacing member

Country Status (4)

Country Link
US (1) US2128434A (enrdf_load_stackoverflow)
BE (1) BE421254A (enrdf_load_stackoverflow)
FR (1) FR821126A (enrdf_load_stackoverflow)
GB (1) GB478768A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2667624A (en) * 1951-05-09 1954-01-26 Basil A Bels Coil forms with ends of inslation having electrical terminals thereon
US3010683A (en) * 1959-10-12 1961-11-28 All American Eng Co Integral cable supports

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2667624A (en) * 1951-05-09 1954-01-26 Basil A Bels Coil forms with ends of inslation having electrical terminals thereon
US3010683A (en) * 1959-10-12 1961-11-28 All American Eng Co Integral cable supports

Also Published As

Publication number Publication date
GB478768A (en) 1938-01-25
FR821126A (fr) 1937-11-27
BE421254A (enrdf_load_stackoverflow) 1937-04-27

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