Abstract: An apparatus for use in monitoring the numbers of a selected species of insect comprises one or more traps into which is put a synthesized pheromone to attract that particular insect. Each trap has a grille comprising a plurality of bars between which is applied a high voltage so that when an insect of the selected species tries to enter the trap it touches adjacent bars and is electrocuted by the electric discharge between them. This discharge is detected by a discharge detector connected to the trap and the detector passes a signal to a transmitter which transmits it to a central receiver equipped with a discriminator for ignoring signals other than those from the transmitter and for passing the signals representing discharges to a pulse counter whereby a total of the number of insects trapped in a given time can be obtained at a central station without visiting each trap.

Abstract: An electrical distribution system suitable for use on motor vehicles where electric current is to be supplied selectively to one or more electric power consuming devices, wherein there is provided a main power carrying conductor and a plurality of signal carrying lines which energize one or more of a plurality of actuators to interconnect the power line to a selected electrical device, in which the power line is in the form of a metal strip of sufficient rigidity that the actuators can be mounted thereon by a mounting which also makes electrical contact thereto.

Abstract: A method of attaching terminals to the wires of a cable having a plurality of wires all insulated from one another with separate insulating layers is disclosed, wherein the wires are surrounded, in the region where a terminal is to be connected, by a liquid conductive material. After the outer cover of the cable has been removed (if it has one), a terminal element is positioned in contact with the liquid conductive material adjacent the wires of the cable at the said region. A rising voltage is then applied between the terminal and one end of the wire which is to be connected to the terminal. The voltage continues to rise until the occurrence of dielectric breakdown of the insulation surrounding the wire to be connected allowing a spark to jump from the wire to the terminal and to burn a hole through the insulating layer allowing the liquid conductive material to flow in and make contact with the wire. Subsequent solidification of the liquid conductive material makes the connection permanent.