Harvester sieve opening indicator

摘要

An adjustable sieve mechanism for an agricultural harvesting machine comprising louvres positioned behind one another and being movable through a range of positions between a fully closed and a fully opened position. Consecutive louvres define an opening when in an opened position. An adjustment mechanism is provided for changing the opening. Also provided is an opening indicator including a movable part which is unitarily moved with one of the louvres when the opening is adjusted. The indicator permits verification of the sieve opening even when the louvres are not accessible for measurement with gauges, and a direct link between the louvres and the movable part avoids the inaccuracies which are conceivable when the indicator is sensing the movement of further, intermediate components of the adjustment mechanism.