Abstract: This invention provides an apparatus for simultaneously producing, from a single source of homogenized plastics material, at least one product in which the plastics material is modified by the injection of an additive. The apparatus includes a mechanism, such as a screw extruder, for homogenizing the plastics material and a mechanism for dividing the stream of plastics material into at least two separate streams into one of which at least is injected an additive. The injection mechanism includes at least one hollow probe which terminates in the stream of plastics material to be modified and a dispersing mechanism for the additive, for example a gear pump, is provided. The streams of plastics material, modified and unmodified are then fed to a final product forming device, such as a die, in such manner that the streams can be individually extruded, or some at least of the streams can be combined in a die to produce an end product.

Abstract: This invention concerns cable making machines and relates to a machine incorporating both twisting and cabling mechanisms. The apparatus is designed to enable the lapping section of the machine to be isolated from the twisting section in order that the machine can be used selectively for both twisting and lapping or twisting only. Common drive means is provided for the machine such drive means including, for example, a clutch for isolating the drive to the lapping section of the machine when required.

Abstract: Apparatus for extruding plastic materials through a die and including a screw extruder in which compounding is to be carried out, a feed means for the compounded material, and a positive displacement delivery means through which compounded materials can be passed to said die, said positive displacement delivery means serving to meter the compounded materials and generate the required extrusion pressure at the die head.