| 摘要 |
A poultry feeder which includes a mechanism for automatically adjusting the size of the opening from the feeder's drop tube to the feeder pan so as to permit the feed pan to be flooded with feed as young chicks are introduced into a poultry house and then, as the chicks grow, to automatically reduce the amount of feed introduced into the pan. The feeder includes a feed level controller movable relative to the feeder's drop tube to be moveable axially relative to the drop tube and feeder pan. The drop tube includes a plurality of support members (fins) pivotally mounted to the drop tube body and which extend from the body outlet. The support members are movable between a first or spread-apart position when the drop tube is in its lowered position wherein the support members extend outwardly of the drop tube body thereby to permit flooding of the feed pan and a second or collapsed position when the drop tube is in its raised position such that the support members lessen the opening between the feed pan and the feed level controller so as to reduce the amount of feed deposited in the feed pan. The bottom edge of the feed level controller body rides on the upper edge of the support members.
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