| 摘要 |
A conveyor system for transporting articles through a generally planar conveying zone. The system includes a coacting pair of endless drive chains that are moved in unison through the conveying zone. Rollers are equally spaced along the length of each chain with the rollers in one row being axially aligned with the rollers in the second row along common axes of rotation that are perpendicular to the direction of motion of the chains. Light weight hollow cylinders are seated on top of the chain with the cylinders resting in contact with two adjacent rollers in each row. A guide means extends along the chains's path of travel from the end of the conveying zone to the start thereof and serves to hold the cylinders in contact with the rollers as the chains are being returned to the start of the conveying zone. Actuating means are also provided to impart a prescribed motion to the cylinders while they are in the conveying zone for further controlling the speed of an article passing therethrough.
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