| 摘要 |
A seed cup and feed wheel unit for dispensing seed from a hopper, the feed wheel being of the single, internal run type and including a hub portion journaled in the cup. A releasable retainer member extends through the hub portion and acts between the wheel and cup to retain the former on the latter. A drive shaft for the wheel which extends through and is drivingly connected to the hub normally prevents release of the retainer member, the member being releasable to permit removal of the wheel from the cup only upon removal of the shaft.
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