Abstract: A yarn delivery system including a trolley creel and a yarn guide apparatus. The trolley creel is made up of a plurality of independently moveable trolleys and each includes a set of rotatable yarn packages. When each trolley is moved into place, the yarn guide apparatus is vertically spaced therefrom. As yarns are drawn vertically from the creel, the yarn guide apparatus vertically guides them.

Abstract: A device for controlling pests, especially flying insects, which comprises an attractant radiation source (44) and a substrate (61) having an adhesive surface illuminated by the radiation. The surface is advanced continuously or intermittently from storage space, so as to avoid a build up of trapped insects.

Abstract: A method and apparatus for treating a material with gas or vapour, especially a fumigant, comprises a sealable enclosure device, a pump which may have an inlet for the agent and a heat reservoir, and a long flexible hose to allow the enclosure to be evacuated after treatment and the effluent discharged outside the premises where the material is treated.

Abstract: An oil cooler comprises a heat exchanger through which the oil passes and which is cooled by a fan. The fan is provided with variable pitch blades so that a variable flow rate of cooling air may be directed on to the heat exchanger. The pitch of the blades is controlled by a piston and cylinder assembly which is actuated by a viscous restrictor located in the oil flow path to the heat exchanger. The arrangement is such that the flow rate of cooling air increases with any decrease in the pressure drop across the viscous restrictor and vice versa.

Abstract: A spraying apparatus is charged with pesticide, and optionally also pressurized, by the attachment and puncture of a pressurized container of agrochemical.