#$%^&*AU2017101791A420180201.pdf#####This invention provides an accessory for crop-harvesting machinery, such as a combined harvester and provides a method and means of detecting blockages to the flow of harvested crop matter being processed. The method comprises establishing a flow-monitoring zone through which a particulate stream such as chaff is discharged from the harvester, directing a beam of radiation across the zone when the stream is being discharged monitoring the beam for disruption, and outputting a response to disruption detected, including an alert to an operator of the harvester.SHEET 1 OF 3 21 4 64 10 513 Conventional combine harvester (cut) 1: Reel 11) Top Adjustatle sieve 2) Cutter bar 12) Bottom sieve 3) Header auger 13) Tailings conveyor 4) Grain conveyor 14) Rethreshing of tailings 5) Stone trap 15) Grain auger 6) Threshing drum 16) Grain tank 7) Concave 17) Straw chopper 8) Straw walker 18) Dnvers cat 9: Grain pan 19) Engine 10) Fan 20) Unloading auger 21) Impeller FIGURE 1 (BACKGROUND) 24 D1 22 100 FIGURE 2
