| 摘要 |
<p>PROBLEM TO BE SOLVED: To steadily master a stroke by assembling a pair of metal weights to a shaft of a putter golf club by screwing. SOLUTION: A weight is formed from metals 1, 2 such as steel, brass, copper. A groove 3 and a screw 5 are formed on the metal 1, and a groove 4 and a screw 6 are formed on the metal 2. The both metals 1, 2 can be jointed with the screws 5, 6. At practicing strokes, the both metals 1, 2 are jointed by the screws 5, 6 in a state that the grooves 3, 4 are made to coincide with each other. The metals 1, 2 of this condition are engaged into a shaft adjacent to a head of a putter, and the metals 1, 2 are fixed screwing to the shaft by a bolt-nut method. When a user practices strokes in this condition, lateral vibration can be prevented by the overlap of the both metals 1, 2 to realize a linear taking-back.</p> |
