| 摘要 |
A dispensing apparatus for metering, sifting and feeding powder comprises a vertical duct with a single, screen-covered outlet at the bottom and a rotary agitator having solid fingers separated by radiused notches on a vertical shaft above the screen. The fingers, which do not contact the screen, are one-twentieth to one-tenth inch thick with square edges. The agitator is driven by a sealed motor mounted at the top of the duct in line with the shaft. Powder is fed to the screen through a downwardly sloping branch duct.
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