Abstract: An apparatus is provided for introducing at least one optical fiber member into a tubular passageway. The apparatus comprises a pressure vessel for receiving the optical fiber member, the vessel either containing compressed air or other gas or being provided with an inlet by means of which compressed gas can be introduced. The vessel is connected to the passageway via a fiber-introducing device, e.g. a venturi or a mechanical device, which creates slack in the optical fiber member.

Abstract: An improved coil package comprises a closable carton formed from a folded blank of cardboard and having a pair of oppositely disposed major side walls, each of which has an aperture in axial alignment with the aperture of the other major side wall and, removably housed in the carton, a reel on which is carried a coil of wire. The flanges of the reel have apertures of diameters less than the apertures in the major side walls of the carton and end parts of a rigid hollow hub formed of a transversely folded metal strip protrude from the reel flanges and are so rolled radially outwardly that their extreme edges bite into the outer faces of the reel flanges, no portions of the rolled over end parts of the hub protruding beyond the planes containing the outer faces of the major side walls.

Abstract: A readily strippable electric wiring cable comprises two electrically insulated line conductors arranged substantially parallel to one another and transversely spaced apart within a surrounding extruded insulating sheath and a bare earth conductor which is loosely housed in a bore extending lengthwise within the sheath between and parallel to the insulated line conductors. Preferably, each line conductor is itself loosely housed in a separate bore in the sheath. Double insulation is provided between the earth conductor and each line conductor.

Abstract: A readily stackable coil package comprises a closed carton 1 which is formed from a folded cardboard blank and which has a pair of oppositely disposed major side walls 2 whose boundary edges 4 lie in parallel planes. Each major side wall 2 has an area 5 of weakness in axial alignment with an area of weakness in the other major side wall. A coil of wire is housed in the closed carton 1 and, also loosely housed in the closed carton, is separately formed means 7 for forming a rigid hollow hub. When it is desired to convert the closed carton 1 into a reel, the areas 5 of weakness are removed to form apertures, the separately formed hub forming means 7 is extracted from the package and is assembled to form a rigid hollow hub extending between and secured to parts of the major side walls bounding the apertures in the major side walls.