| 摘要 |
A changeable liquid reservoir apparatus has a hollow rotating drum, the shaft of which includes an identical coupling on both ends. Both ends of the reservoir include slots which are equidistant from the shaft. Permanently positioned retainer members engage the slots. The shaft of a motor has a coupling which engages the drum coupling. The reservoir, therefore, can be retained in either of two directions and is changeable without the need for tools.
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