Zero back-pressure conveyor system

摘要

An endless conveyor system includes movable lift rails for supporting the conveyed articles on either side of an endless conveying member. The lift rails are defined by end-to-end sections with adjacent ends of adjacent sections simultaneously movable between a lowered position wherein the articles may be engaged by the conveying member and a raised position wherein the articles are lifted above and out of engagement with the conveying members for interrupting the advancement of the articles with zero back-pressure.