Abstract: This invention relates to an improvement in an evacuating apparatus attached to an air cleaner such as of an internal combustion engine as in connection with a farm tractor or an industrial engine operating in a dust laden environment where the contaminants drawn into the air cleaner are evacuated by the apparatus herein. The improvement consists in having a more positive evacuation of air transported contaminants in particulate form and evacuated with said contaminants are airborne particles of moisture carried with said contaminants. Comprising the apparatus of the invention is a small sized motor driving an impeller having vanes sweeping through a trough in the direction of exhaust, there being no return passage to the air cleaner.

Abstract: A system for unloading powdered or granular materials from a container made of flexible material, the system including a line supplying compressed gas to the interior of the container to fluidize the material in the container, and a delivery conduit which may be attached to the container for delivering fluidized material from the container. A pair of arms are movable between a first position in which they are spaced from the container and a second position in which they engage and squeeze the container. Vibrators are provided for vibrating the container. The action of the arms and the vibrators facilitates unloading by breaking up clumps of the material in the container and preventing the formation of air pockets and material bridging.

Abstract: In combination with an automatic nozzle of a gasoline pump, the nozzle having a trigger operable within a housing which includes a trigger guard; an actuator for the trigger in the form of a spring extending transversely of and supported on the trigger guard and engaging the trigger.