| 摘要 |
<p>A ball game practice device 10 comprises a base portion, a ball 47 attached to an upper end of a rod 44, the lower end of the rod being mounted for rotary motion relative to the base portion on an axis extending transverse to the length of the rod, the device further comprising an elastic cord 33 for effecting return of the rod after the ball has been struck, one end of the chord (32, figure 4) being anchored to move in synchronism with the rod and the other end 35 being anchored to the base portion, and a catch 34 for engagement with the cord whereby further return movement of the rod is restrained. The lower end of the rod is preferably attached to a carrier mounted for rotary motion. The carrier may comprise an arcuate surface, with the cord being deployed in contact with the surface. The carrier is most preferably a wheel 29.</p> |
