Abstract: A whistle having two chambers of different size so that each is capable of generating a sound different to that generated by the other. Each chamber is elongate and has an open mouth located at the same end of the whistle body. A mouthpiece extends angularly from that end of the body and has two open-ended passages extending therethrough, each of which has an open inner end located adjacent a respective one of the chamber mouths. The two passages are located in close side by side relationship and are arranged so that a stream of air emerging from their respective inner ends passes across a respective one of the two chamber mouths so that the two chambers generate sound simultaneously. The two chambers generate relatively high and low frequency sound respectively.

Abstract: A snap fastener and method of attaching the same to a section of sheet material are disclosed. The snap fastener comprises an operative component and a securing component, both of these components being formed of plastics material. The operative component has a base wall with an opening therethrough and a tubular portion including a snap engaging portion formed thereon surrounds the opening and projects from one side of the base wall. The securing component has a pin and a cap flange at one end thereof, the pin being adapted to pass through the opening of the operative component so that the terminal end portion of the pin is located beyond the side of the base wall from which the tubular portion projects. The terminal end portion of the pin is deformable when so located relative to the operative component so as to secure the two components against separation. At least a peripheral portion of the cap flange slopes outwardly in a direction towards the terminal end of the pin.

Abstract: A one-piece closure cap formed of a plastics material and being adapted to close an opening in a receptacle or container and to be releasably locked in the closed position through a bayonet-type connection. The cap has a cylindrical body section which fits within the opening and an enlarged head section at one end of the body section. Locking lugs formed integral with the body section extend radially outwards therefrom and each is connected to the body section through a resilient strap-like portion partially separated from the body section by two slots extending circumferentially of the body section and being spaced apart in the axial direction of that section. Each lug is formed integral with the respective strap-like portion so as to be located between the ends thereof and is movable relative to the body section in the axial direction of that section.

Abstract: A tag fastener assembly wherein the tag is locked to the fastener and wherein the fastener is provided with means by which it may be secured to an article such as the carcass of an animal.