| 摘要 |
A portable machine used to raise dirt, rocks, and the like from holes, such as fence post and utility pole holes and similar purposes. Means is provided in a closed chamber to extract the heavy and the light dirt particles by gravity separation and then to extract the fine particles by cloth bag filtration. Means is provided to clean the fiber cloths by mechanical vibration. A blower draws a vacuum through the chamber and then through a hose which is lowered into the hole being cleaned.
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