知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

12 records (took 0.014 seconds)

    Manufacture of continuously loaded conductors
    8.
    发明授权
    Manufacture of continuously loaded conductors 失效
    连续负载导体的制造

    公开(公告)号：US1844114A

    公开(公告)日：1932-02-09

    申请号：US53866431

    申请日：1931-05-20

    Applicant: BELL TELEPHONE LABOR INC

    Inventor： BISHOP WALTER M

    IPC: H01B11/14

    CPC classification number: H01B11/14 ,  Y02A30/50

    Abstract: 400,271. Loaded conductors; electrodeposition. ELECTRICAL RESEARCH PRODUCTS, Inc., 195, Broadway, New York, U.S.A.-(Assignees of Bishop, W. M. ; 16, Pine Street, Douglaston, New York, U.S.A.) April 23, 1932, No. 11706: Convention date, May 20, 1931. [Classes 36 and 41.] To provide looseness between the conductor and an electrolytically-deposited or sprayed-on magnetic loading sheath of a signalling cable, the conductor is provided with a metallic spacing layer upon which the loading material is applied, the spacing layer being subsequently removed through gaps formed in the loading sheath. In one construction, a conductor 50, Fig. 5, formed of deoxidized copper prepared by the method described in Specification 340,497, [Group II], is provided with an electrolyticallydeposited zinc or magnesium spacing sheath 51 upon which is deposited a loading sheath 52 formed of an alloy of nickel and iron, with or without cobalt. The loading sheath may be applied by passing the coated conductor 51 through an electrolytic plating bath 31, Fig. 3, having iron, nickel and cobalt anodes 34, 35, 36, the conductor 51 forming the cathode. The electrolyte of the bath contains soluble sulphates and chlorides of the metals to be deposited, together with a "buffer" mixture consisting of one part by weight of boric acid and five parts by weight of sodium sulphate. The loaded conductor thus formed is stretched by the apparatus described in Specification 353,472 to cause frequent transverse breaks 53, Fig. 5, in the loading sheath 52 and is then placed as a coil in a bath of sulphuric or hydrochloric acid to remove the spacing sheath 51. Alternatively, the spacing sheath may be removed by heating the stretched conductor in air or in a rarefied atmosphere. Fig. 7 shows apparatus for carrying out the latter method, comprising a resistance furnace 65 containing a closable quartz tube 61 which is adapted to be exhausted through a pipe 63. The conductor to be treated is wound on a quartz tube 60 and inserted within the tube 61, a heat-resisting baffle 64 being disposed as shown.

Patent Agency Ranking