| 摘要 |
For overcoming certain inherent disadvantages associated with most agricultural fertilizer distributors, a hopper having a distributor under its floor has a clean out door that is adapted to be closed using a tensioned flexible cover. The flexible cover is drawn into sealing abutment with the edges of the hopper housing walls by tensioning members. Advantages of this difference in construction include, for example, the ease with which blockages can be cleared from the distributor mechanism without the necessity of first emptying the contents of the hopper. The flexible cover is made of non-corrosive material and is not easily damaged by rough handling.
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