Marine propeller fish line and weed cutter

Abstract From the Canadian patent

Disclosed herein is a marine propulsion device comprising a lower unit including a gear case including a hollow interior having at the rearward end thereof an inwardly extending inner circular surface defining an opening through which exhaust gases and engine cooling water are discharged from the lower unit a propeller, shaft rotatably journalled in the gear case and including a portion extending rearwardly of the gear case a, propeller including an inner part mounted on the propeller shaft rearward portion for common rotation of the inner part with the propeller shaft, an outer part having an outer circular surface with a diameter materially less than the diameter of the inner circular …