Abstract: An applicator, for example an injector (100), includes a flow control means including a first member (2) and a second member (6) for controlling flow from an inlet (4) to an outlet (5). A hinged linkage (17) is provided having a first end (18) rotatably engaged with the first member and a second end (19) rotatably engaged with the second member. The linkage (17) is moveable between a collapsed position and an over-center locked position which prevents relative movement of the first member (2) towards the second member (6). Linkage unlocking means (28) are provided which move the hinge (22) away from the over-center locked position so that the first and second members can be moved together. A similar linkage (10) prevents unwanted movement of a needle shroud (8). A needle shroud (8) which can be used to remove the needle (7) from the injector (100) is also described.

Abstract: An applicator, for example an injector (100), includes a flow control means including a first member (2) and a second member (6) for controlling flow from an inlet (4) to an outlet (5). A hinged linkage (17) is provided having a first end (18) rotatably engaged with the first member and a second end (19) rotatably engaged with the second member. The linkage (17) is moveable between a collapsed position and an over-centre locked position which prevents relative movement of the first member (2) towards the second member (6). Linkage unlocking means(28) are provided which move the hinge (22) away from the over-centre locked position so that the first and second members can be moved together. A similar linkage (10) prevents unwanted movement of a needle shroud (8). A needle shroud (8) which can be used to remove the needle (7) from the injector (100) is also described.

Abstract: A conductive tape for an electrifiable fence comprising a tape of woven or knitted construction having at least two conducting wires arranged longitudinally and integrally in the woven or knitted structure. A bridging conductor is carried in or on the knitted or woven structure and is directed transversely across the two longitudinal conductors at intervals, so that, if a break occurs in one of the conductors, the current path is capable of continuing via the bridging conductor.

Abstract: Fence wires for the confinement of stock animals, zoo animals or wild animals have an electrically conductive synthetic plastic sheath and a tension resisting core which is made of either a textile material or a fence wire. The sheath is rendered conductive by the incorporation of amino compounds which are vulcanized with the chloropolymers of the sheath material, by the incorporation of metallic hairs or conductive plasticizers.

Abstract: This invention relates to wheel-like electric fence standards where an electrified fence wire passes through an insulated hub member from which radiates a number of legs to form a wheel-like configuration and is characterized in that a contactor within the hub automatically connects and disconnects successively the legs from the fence wire to prevent the legs in contact with the ground from short-circuiting the fence.

Abstract: An electric fence energizer which comprises a capacitor connected across a power supply to an output transformer. An SCR is provided between the capacitor and the primary stage of the transformer and the SCR is arranged to discharge the capacitor. A controllable switch is provided with a control circuit which controls the charge in the capacitor via the controllable switch and also triggers the SCR.