Abstract: A grain cleaning apparatus for a combine harvester has a linkage system for moving a grain pan or sieve with an oscillatory movement. A configuration of the linkage system is adjusted for example in dependence on a lateral inclination of the combine harvester, in particular by setting the position of a pair of arms of the linkage system, so that some points within the linkage system are fixed and other points are adjustable depending on the angle of inclination (but then remain static for a constant angle of inclination).

Abstract: An extendable toilet brush comprising a handle, where the handle is hollow; a rod connected to the handle, where the rod extends and retracts from the handle; a brush head attached to the rod at an end opposite from the handle; and a telescopic fastening means connecting the rod within the handle, where the telescopic fastening means enables the rod to extend, lock and retract within the handle.