| 摘要 |
A carbon black beader drum having a plow-like member extending into the moving bed of beads within the drum. The member parts the surface of the moving bed, and carbon black in powder form is added to the beader drum by placement into the impression or furrow created in the moving bed by the member. The added powder is covered a short distance behind the member, preventing the powder from depositing on the inner surface of the beader drum.
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