| 摘要 |
Improved conveyor roll structure for retaining thereon advancing elongated work pieces such as steel rods, bars, or the like wherein the roll exhibits a first retaining surface of revolution inclined at an angle less than 45 DEG to the axis of the roll and a second inclined retaining surface of revolution meeting the first at an angle greater than 90 DEG and inclined from the roll axis at an angle of less than 45 DEG , the second surface of revolution having a depression therein whereby the cross section of said second surface presents a generally concave aspect and the second surface extends outwardly from the juncture of the first and second surfaces a predetermined distance such that the longitudinal centroid of the conveyed work piece may be contained within the vertical extent of the first and second retaining surfaces while being advanced across a plurality of rolls comprising the conveyor.
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