Abstract: A firing system for a multi-cylinder internal combustion engine propagates combustion between cylinders by the use of a valve located between an outlet port of one chamber and an inlet port of a second cylinder.

Abstract: An incinerator for drying then cleanly burning trash. The incinerator includes an upper rotating trash drying tumbler for receiving and drying trash and a lower rotating trash burning tumbler interconnected to the upper tumbler for receiving dried trash therefrom. The lower rotating tumbler includes a meshed screen thereabout for complete combustion of the trash therein. The heat produced from the burning trash in the lower tumbler causes the drying of trash in the upper tumbler. A rotating fire tray is situated below the lower tumbler for collecting and reburning any material falling from the lower tumbler and for retaining combustible material for igniting the dried trash in the lower tumbler. When the interior temperature of the incinerator is high enough, the trash in the lower tumbler is self-ignited and heat produced from burning material in the fire tray is no longer necessary. Air exhausted from the drying and burning of the trash is filtered before being exhausted into the atmosphere.

Abstract: A pressure responsive valve assembly which comprises a housing having an upper part and a lower part. A fluid coupling with an inlet and an outlet is contained in the lower housing part and a fluid passageway extends between and connects the inlet to the outlet. A gate is slidably mounted within the lower housing part and movable between a closed position in which the gate extends across the passageway and blocks fluid flow between the inlet and outlet, and an open position in which the gate opens at least a portion of the fluid passageway. The actuation of the gate is controlled by a pressure responsive diaphragm which permits the gate to move to its open position only when the pressure from an external pressure line falls below a predetermined amount.

Abstract: A heat exchange system is provided which transfers the heat from a fluid discharged from a device that utilizes a heated fluid, to fresh fluid in order to increase the temperature of the fresh fluid prior to feeding it into a heating tank. Thus, less energy is required to heat the fluid in the heating tank prior to its introduction into the device which utilizes heated fluid. After the heat has been exchanged, the discharged fluid is then expelled from the system. A fluid trap controls the fluid level in the heat exchanger to assure maximum heat transfer capability. An antisiphon valve is provided in the fresh fluid input of the heat exchange coil in order to prevent discharged fluid from contaminating the fresh fluid source in the event of a rupture in the heat exchance coil.