| 摘要 |
<p>An improved cultivator having support wheels swingably and adjustably mounted under its frame to easily adjust the depth of the cultivating elements. The improved cultivator also has support bars arranged in pairs and carrying cultivating elements thereon. The bars in each pair extend in opposite directions and are connected to the frame by a single wedge having a pair of comming surfaces acting on both bars simultaneously. This wedge can be loosened to easily, slidably, adjust the support bars. The improved cultivator may also comprise a pair of wedge members connected by a bolt for quickly and easily connecting a cultivating element to an end of the support bars.</p> |
