| 摘要 |
A trimmer comprises a cutting head ( 1 ) housing a cutter ( 5 ), and a shaft ( 2 ) for supporting the cutting head. A large diameter wheel ( 8 ) is rotatably mounted with respect to the cutting head ( 1 ), and a motor is provided for driving the cutter ( 5 ) via an output shaft ( 7 ). The cutting head ( 1 ) is connected to the shaft ( 2 ) by a joint ( 3 ) permitting the cutting head ( 1 ) to be positioned with its cutter ( 5 ) either substantially horizontal or substantially vertical. The wheel ( 8 ) is sized to contact the ground when the cutter ( 5 ) is substantially vertical and to circumscribed the axis of the output shaft ( 7 ). The arrangement is such that the cutter ( 5 ) extends beyond the circumference of the wheel ( 8 ).
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