| 摘要 |
A feeder to supply blocks to a tumbler having a block inlet from a generally horizontal platform, the feeder comprising a frame and a shelf assembly so mounted to the frame as to reciprocate between a block receiving position and a block dumping position; the shelf assembly generally aligned with the platform when the shelf assembly is in the block receiving position to receive at least one block thereupon from the platform; the shelf assembly being so movable as to be angled into a block dumping position to cause the blocks to slide from the shelf assembly to the inlet of the tumbler.
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