Abstract: Vacuum operated apparatus for controlling the ignition timing of an engine, which apparatus comprises valve means and first, second, third and fourth conduit means, the valve means comprising a first chamber, first and second ports in the first chamber, first obturator means for opening and closing the second port, a second chamber, third and fourth ports in the second chamber, and second obturator means for opening and closing the fourth port, the first conduit means being for connecting the first port to an engine inlet manifold, the third conduit means being for connecting the third port to an engine carburetor, and the second and fourth conduit means being for connecting the second and fourth ports respectively to an engine distributor, and the apparatus being such that in use the valve means receives first vacuum forces from the inlet manifold via the first conduit means and second vacuum forces from the carburetor via the third conduit means, the valve means being operative to transmit the greater of th

Abstract: Apparatus for enabling an engine to burn either liquid fuel or gaseous fuel, which apparatus comprises: a gaseous fuel control valve for installation in a gaseous fuel supply line leading from a gaseous fuel storage container to an intake manifold of the engine, a liquid fuel shut-off valve for shutting off the supply of liquid fuel when the engine is to run on gaseous fuel, and a gaseous fuel shut-off valve for shutting off the supply of gaseous fuel when the engine is to run on liquid fuel, the gaseous fuel control valve being such that it has a diaphragm which is positioned in a chamber and which operates in association with a gas inlet and a gas outlet to the chamber to apportion the gaseous fuel to the engine in dependence upon the operating requirements of the engine.

Abstract: A fuel economy device comprising a body formed to define a chamber having an externally screw threaded neck portion and communicating with the chamber an internally screw threaded aperture for receiving a spark plug and an inlet pipe including a non-return valve provided to facilitate the injection of water into the chamber and to resist the flow of gas from the chamber.

Abstract: Apparatus for enabling an engine to burn either liquid fuel or gaseous fuel, and which includes a gaseous fuel control valve for location in a gaseous fuel supply line between a gaseous fuel storage container and an intake manifold of the engine. The control valve includes a single diaphragm which defines one wall of a chamber having a gas inlet and a gas outlet. An accelerator pedal controlled outlet valve obturator is positioned in the outlet, for controlling the intensity of suction applied to the chamber in response to the position of the accelerator pedal. An inlet valve obturator is provided to control the flow of gaseous fuel through the inlet into the chamber. The inlet valve obturator is connected to the diaphragm so that movement of the diaphragm controls of the inlet valve obturator.

Abstract: Garbage to be converted is fed into the upper end of a vertical chamber. A gas collection chamber is provided around the upper end of the chamber and a blower is used for lowering the pressure in this gas collection chamber. The lower pressure causes a draw within a combustion zone defined at the lower end of the garbage chamber. The draw promotes combustion of garbage in the combustion zone much in the same manner that the draw by a pipe smoker will promote combustion within the bowl of his pipe. The gas collected in the gas chamber is delivered through a water filled cleaner or filter. The gas discharged from the upper end of the filter is ready for use in a power device or a furnace, or it may be collected and compressed or even liquified, into a storage container, for easy mobility and later use.