PROBLEM TO BE SOLVED: To provide a finishing device configured such that the supply of rice seeds to a seedling box in a conveyance path may not cause escaping of rice seeds to the outside of the seedling box due to the rice seeds dropping on the upper surface of the edge in the front and rear of the seedling box, and a blank without the rice seeds may not be caused on the upper surface of a floor board of the seedling box for receiving the dropping rice seeds.SOLUTION: A finishing device is configured as follows: a first limit switch LS1 operated in an on-state by the contact to a bottom lower surface of a seedling box B and recovered and operated in an off-state by the release of the contact is installed in the part positioned below an outlet of a feeding conveyor D in the middle of continuous direction of a conveyance path； a second limit switch LS2 is installed in a position at the front of the first limit switch； and these switches are disposed in series on a control circuit and connected to the control circuit so as to close the control circuit and start the operation of the feeding conveyor by the on-operation with respect to the control circuit of a motor M for driving the feeding conveyor D, and to open the control circuit by the off-operation and stop the operation of the feeding conveyor D.【課題】搬送路上の苗箱に対する種籾の供給が、苗箱の前後の縁部の上面に種籾が落下することによる苗箱の外側への種籾の逸出を生ぜしめず、かつ、落下してくる種籾を承ける苗箱の床板の上面に、種籾が存在しない空白部を生ぜしめることなく、行われるように構成する。【解決手段】搬送路の連続方向の途中で、繰出コンベアＤの放出口の下方に位置する部位には、苗箱Ｂの底部下面に対する接触によりオンに作動し、接触の解放によりオフに復元作動する第１のリミットスイッチＬＳ１を設置し、このリミットスイッチより手前にずれ込んだ位置に、第２のリミットスイッチＬＳ２を設置し、これらスイッチを、繰出コンベアＤを駆動せしめるモータＭの制御回路に対し、オン作動によりその制御回路を閉成して繰出コンベアの作動を開始させ、オフ作動により制御回路を開成して繰出コンベアＤの作動を停止せしめるよう制御回路上に直列に配置して制御回路に接続せしめる。【選択図】図７
