| 摘要 |
The improved golf practice device disclosed herein is designed to permit golfers to practice their golf swings in a relative restricted area and to give them an indication, the power of their swings, by means of an impact measuring device attached and secured to the upper end of a rigid, hollow stake driven into the ground. A shock cord is attached at one end at the bottom of the stake and the other end is attached by appropriate means to the golf ball mounted on the top of the stake. The measuring indicator comprises a flat bar member having a central longitudinally extending slot in which is disposed a helical spring member having one of its ends secured to a plunger slideably moveable in said slot and the other end of said spring member being secured to the flat member. A cord has one end around extending through the helical member and secured to said plunger and the other end of said cord passes through a passage communicating with the interior of said stake thereby permitting the other end of the cord to be attached to the shock cord, a predetermined distance below the mounted golf ball. The slot also slideably supports an indicator slide which is adapted to be moving by the plunger which will move the indicator slide a measured distance along the flat bar whenever the golf ball is struck by a gold club head.
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