| 摘要 |
A string trimmer head is provided for receiving and retaining separate lengths of string supplied from outside the head. String lengths passing through openings in the periphery of the head are held by clamping members provided within the head. The clamping members are selectively opened by activation of respective slidable members provided on the upper surface of the head in order to release short lengths of previously supplied string and/or to permit the receipt of new string lengths. On release of the slidable members, the respective clamping members move towards one another for clamping purposes under the influence of springs.
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