| 摘要 |
A wedge head is provided having upper and lower surfaces and front and rear ends. The upper and lower surfaces are forwardly convergent toward a forward transverse apex edge of the head and an elongated handle is provided including base and free end portions. The handle base end portion is anchored relative to the head with the handle free end portion projecting rearwardly from the rear end of the head. A weight body is slidably mounted on the free handle end portion for guided reciprocation between front and rear limit positions on the handle and the wedge head includes front-to-rear extending opposite side surfaces which are rearwardly convergent. The side surfaces are also upwardly convergent and the forward transverse apex edge includes structure defining transversely spaced forwardly projecting teeth.
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