PROBLEM TO BE SOLVED: To solve such a problem that spaces are formed between the rotary blades and side plates for both sides of a spreader, and easily clogged with discharged and stayed straws.SOLUTION: This spreader 1 in which blade-like rotary blades 12 are projected from a rotary shaft 13 at a constant interval in the axial direction and further in which fixed blades 14 capable of being projected or retreated are disposed between the rotary blades and the rotary blades, respectively, is characterized by forming a blade portion 12a on the rotation direction side of each rotary blade in a structure that the blade portion 12a has a retreated angle in the rotation direction, forming the blade portion of each fixed blade 14 in a saw blade shape, and outward bending each of the rotary blades placed on both the sides of the rotary shaft.COPYRIGHT: (C)2003,JPO【課題】 従来、スプレッダの両側の回転刃と側板との間のには空間ができてしまうので、排藁が溜まり易く、詰まりの原因となっていた。【解決手段】 回転軸13よりブレード状の回転刃12を突出して、軸心方向に一定間隔をあけて配置するとともに、回転刃と回転刃の間に出退可能に固定刃14を設けたスプレッダ1において、該回転刃の回転方向の辺に刃部12aを形成し、該刃部は回転方向に対して後退角を有するように構成し、前記固定刃の刃部を鋸刃とし、回転軸の両側に位置する回転刃を外側方に折り曲げた。
