| 摘要 |
A fill hopper assembly (30) includes two fill hoppers (50) and (52) which are reciprocated back and forth beneath a feed hopper (14) and over discharge openings (72 and 74) of a discharge bridge plate (32). The upper fill hopper bridge plate (34) includes an intermediate bridge (48) that closes the hopper extension (28) when the fill hopper assembly is in transition to place one of its fill openings (36 or 38) beneath the feed hopper extension (28). The fill hopper bridge (48) closes the fill hopper extension until one of the fill openings (36 or 38) is in registration with the extension (28). Likewise, the discharge bridge plate (32) includes a bridge (76) that closes the bottom openings of the open-ended fill hoppers (50 and 52) when the fill hoppers are centered and as they approach their laterally displaced discharge openings (72 or 74).
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