Abstract: A casting device for casting a fly or other lure without the need for fly fishing tackle is provided and comprises an elongated ballasting member that has an outer body and a wire running axially through the outer body. The ballasting member is adapted for the addition of beads positioned on the wire at either end of the outer body. Two swivels are attached to either end of the ballasting member. One swivel is adapted for attachment to a spin or bait casting line and the other swivel is adapted for attachment to a leader.

Abstract: An aircraft power plant for vertical take-off and landing comprises a jet propulsion unit having an air inlet and an exhaust outlet and incorporating a combustion chamber, a high pressure compressor for supplying air from the air inlet to the combustion chamber, a fuel inlet for supplying fuel to the combustion chamber, and a turbine coupled to drive the compressor and arranged to be driven by the exhaust gases passing from the combustion chamber to the exhaust outlet. Swivelling front nozzles are provided for selectively directing a proportion of air from a fan arrangement downwardly in front of the propulsion unit and swivelling rear nozzles are provided for selectively directing at least a proportion of the exhaust gases from the exhaust outlet downwardly to the rear of the propulsion unit, in order to effect lift on take-off or landing.

Abstract: An aircraft power plant for vertical take-off and landing comprises a jet propulsion unit having an air inlet and an exhaust outlet and incorporating a combustion chamber, a high pressure compressor for supplying air from the air inlet to the combustion chamber, a fuel inlet for supplying fuel to the combustion chamber, and a turbine coupled to drive the compressor and arranged to be driven by the exhaust gases passing from the combustion chamber to the exhaust outlet. Swivelling front nozzles are provided for selectively directing a proportion of air from a fan arrangement downwardly in front of the propulsion unit and swivelling rear nozzles are provided for selectively directing at least a proportion of the exhaust gases from the exhaust outlet downwardly to the rear of the propulsion unit, in order to effect lift on take-off or landing.

Abstract: A water turbine (1) comprises a turbine chamber (3), an inlet port (4) and an outlet port (6) opening into the chamber (3), and two or more rotors (11, 12) arranged within the chamber (3) with their axes of rotation parallel so as to be rotatable in the water flow passing between the inlet port (4) and the outlet port (6). Each of the rotors (11, 12) has two or more substantially equi-angularly distributed lobes (17, 18), and the arrangement is such that the rotors (11, 12) rotate in opposite directions with their lobes in mesh with one another under the action of water impinging on the lobes of the rotors. Such a turbine can be constructed to operate efficiently with a low head of water, and is additionally of simple construction and therefore inexpensive to produce.

Abstract: An over running clutch having a ball that wedges against the interior of a circular race to move a pawl into engagement with a ratchet.

Abstract: A therapeutic stocking comprising, a boot portion, and a circumferentially elastic foot portion for covering the foot of a patient. The stocking has a lower non-slip region of the foot portion comprising, sheet means of a thermoplastic material fused to the outside of a circumferentially prestretched area of the foot portion underlying the foot. The region is located to contact the floor beneath the patient's foot and provide a relatively high friction surface to minimize slippage of the patient on the floor.

Abstract: A mechanism for varying the angle of attack of stator vanes of a compressor in a turbo machine. The vanes in each row are all connected to a respective encircling ring. The rings from all the rows of variable stators are connected to a beam which lies along the outside of the casing. The beam is connected at about its middle to a screw jack actuator which is bolted to the casing and one end of the beam is pivotted to the casing with a compound pivot which accommodates the compound movement of the beam caused by the straight line movement of the screw jack actuator.

Abstract: A variable speed device comprising a pair of discs driven from a source of power each disc having rack teeth forming its surface. The device including also a pinion in mesh with the rack teeth of each disc mounted to be movable radially of the disc to vary the speed of an output shaft in relation to the rotation of said disc.

Abstract: A gas turbine powerplant which has two compressor parts alternatively connectable:1. in series for supersonic flight, or,2. in parallel for subsonic flight and particularly useful at take-off. The compressor parts are co-axial and a valve extends obliquely between them having two positions corresponding to the two alternatives above. In the first position the valve allows series flow and in the second position its obliquity deflects the delivery of the first compressor part out into a bypass duct and allows ambient air into the second compressor part.

Abstract: The disclosure of this invention pertains to a bladed rotor for gas turbine engines wherein each blade has a root portion connected to a blade support element spaced radially outwardly from the rim of a single disc and being of greater axial extent than the rim. The element is connected to the rim by a web extending in part radially outside the rim and in part at the sides of the rim.

Abstract: A therapeutic stocking comprising, a boot portion, and a circumferentially elastic foot portion for covering the foot of a patient. The stocking has a lower non-slip region of the foot portion comprising, sheet means of a thermoplastic material fused to the outside of a circumferentially prestretched area of the foot portion underlying the foot. The region is located to contact the floor beneath the patient's foot and provide a relatively high friction surface to minimize slippage of the patient on the floor.

Abstract: In a variable diameter driving sprocket for a chain drive change speed device comprising a plurality of circumferentially spaced radially movable toothed elements mounted on said driving sprocket over which the chain is threaded; a means to move the toothed elements radially which includes an adjusting gear or sprocket coaxial with said driving sprocket but free to rotate with respect to said driving sprocket, and differential means drivingly connecting said adjusting sprocket to said variable diameter driving sprocket.

Abstract: The disclosure of this invention relates to a gas turbine engine combustion chamber including a flame tube having holes closed by a filling of a material of lower melting point than the flame tube material so that if in operation the temperature of the tube exceeds that of the filling the latter melt and cooling air can enter the tube through the holes.

Abstract: .Iadd.A shovel loader in which the engine is supported over a rear axle which can pivot about a longitudinal axis in relation to the engine. The engine and the other axle are pivotable in relation to each other about a vertical pivot axis. This arrangement increases the lateral stability of the loader, particularly when cornering. .Iaddend.