To mitigate the impact force of a shuttle body stopper and a stopper and to reduce noise generated from a shuttle device by constituting the stopper provided on the back surface of a throat plate by an elastic member and a vibration absorbing material.

A dumper stopper for controlling the rotation of the shuttle body stopper 3 within a fixed range is constituted of a projection part 12a joined to the back surface of the throat plate 8, a leaf spring 12b with which the shuttle body stopper 3 collides and sponge rubber for attenuating the deformation speed of the leaf spring 12b deformed by collision. The lower surface of the sponge rubber is joined to the upper surface of the leaf spring 12b and the upper surface is joined to the lower surface of the throat plate 8.