| 摘要 |
A baseball bat includes a hollow bat and an aperture is defined in an end of a barrel of the bat. A flange extends radially inward from an inner periphery of the bat and a rod movably extends through the flange. A spring is mounted to the rod and biased between the flange and a skirt on the rod. A hook is pivotally connected to the inner periphery of the bat and engaged with a groove defined in an outside of the skirt. A rope extends from the hook and passes from a hole defined through the bat. A trigger is connected to the rope so that when pulling the rope, the hook is disengaged from the groove and the rod jumps to throw a ball in the aperture from the end of the barrel.
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