公开(公告)号：GB649748A

公开(公告)日：1951-01-31

申请号：GB2609648

申请日：1948-10-06

Applicant: ROBERT GREENS GRUBB ,  STEWART WILLIAM MACDONALD MORR

IPC: H02G3/08

Abstract: 649,748. Junction boxes. GRUBB, R. G., and MORRIS, S. W. M. Oct. 6, 1948, No. 26096. [Class 38 (i)] A junction box 10 of insulating material whose walls 10c are provided with branches 11 has a conductor 12 embedded in its surface 10b and in the inner surfaces of the branches thereby interconnecting them. The conductor 12 may conform with the internal surface of the branches which may be tapered. Fig. 4 (not shown). The box may be used with metal conduits or plastic conduits having a metallic earthing conductor embedded therein as described in Specification 645,785.

公开(公告)号：GB654500A

公开(公告)日：1951-06-20

申请号：GB2609748

申请日：1948-10-06

Applicant: ROBERT GREENS GRUBB ,  STEWART WILLIAM MACDONALD MORR

IPC: H01R4/50 ,  H01R4/60

Abstract: 654,500. Pipe joints. GRUBB, R. G., and MORRIS, S. W. M. Oct. 6, 1948, No. 26097. [Class 99(i)] [Also in Group XXXVI] A flexible pipe 17 having an electrical conductor 18 is connected to a metal pipe 26 or to the tubular stub of a junction-box or to a metal sleeve, the other end of which has a like connection to another flexible pipe, by a coupling nut 19 which clamps the flared end of the pipe 17 on to an olive 15 located in the tapered mouth of pipe 26. A sealing ring 29 is housed in a recess in the nut adjacent the flare of the pipe, as shown, or in a recess in the nut adjacent the cylindrical part of the pipe.

公开(公告)号：GB645785A

公开(公告)日：1950-11-08

申请号：GB2609548

申请日：1948-10-06

Applicant: ROBERT GREENS GRUBB ,  STEWART WILLIAM MACDONALD MORR

IPC: H02G3/04

Abstract: 645,785. Conduits. GRUBB, R. G., and MORRIS, S. W. M. Oct. 6, 1948, No. 26095. [Class 36] A conduit for electric cables comprises a tube 11 of insulating material having one or more metal wires or ribbons 10 extending continuously therethrough and embedded in the inner surface of the conduit to provide an earthing connection exposed to the interior of the conduit. The conductor is embedded in the tubing by feeding the wires or ribbons continuously to an extrusion machine during the extrusion of the tubing. The conductor, which may extend longitudinally or helically along the tubing, may comprise a metal wire or ribbon or a wire mesh, and may have a serrated surface by which it is held in position within the tube. The tube may be made from natural or synthetic rubber or a synthetic resin.