| 摘要 |
An implement supports several ground cultivating tools on a main toolbar and at least one wing toolbar. The two are coupled together by two pivot brackets attached to the outer end of the main toolbar and the inner end of the wing toolbar. The pivot brackets are coupled to the main toolbar and the wing toolbar to permit the wing toolbar to pivot upwardly and downwardly with respect to the main toolbar. When the wing toolbar pivots upwards with respect to the main toolbar, it pivots about an upper point or axis and when it pivots downwards with respect to the main toolbar it pivots about a lower point or axis below the upper point or axis.
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