| 摘要 |
A chain conveyor has feed rollers loosely fitted over chain rollers for conveying articles thereon at a speed higher than that of the chain rollers being driven on a rail means. The feed rollers have a diameter larger than that of the chain rollers such that the feed rollers, upon corotation with the chain rollers due to frictional engagement therewith under the weight of the articles, have a peripheral speed greater than that of the chain rollers. The articles can be stopped or accumulated at a desired position while allowing the feed rollers to be underrun without substantial slippage against the articles by rotating in a direction opposite to the direction of rotation of the chain rollers being continuously driven.
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