Abstract: A conveyor stop structure arrests the forward motion of a selected article carried by a belt driven live roller conveyor and simultaneously disengages an associated roller from powered engagement with the belt. The stop structure includes a stop connected to conveyor frame members for upward pivotal movement, and a roller contacting cam for raising a selected roller from powered engagement with the belt. The stop has an angled lower portion which receives a bottom leading edge of the article and lifts at least the bottom leading edge from contact with another roller as the article swings the stop rearwardly and upwardly.