PURPOSE: To reasonably control meandering motion of a movable member, by providing noncontinuous parts in the running surface of a conveying rail guiding the movable member of a transport conveyer.

CONSTITUTION: Endless conveyer chains are rollably mounted between drive chain wheels 2, 2 and driven chain whell 3, 3, and at least three lines of chain are separately provided. Continuous parts 4 are extensible provided in a conveying rail below a chain 1 to form noncontinuous parts 5 to a running surface at the transport side. When a movable member reaches the noncontinuous parts 5 between continuos part 4 of the conveying rail and the next continuous part, the chain is suspended downward to cause a conveyed object not contacted to the chain, on the contrary the conveyed object is supported by the continuous part of the other conveying rail, then the chain having supported the conveyed object before is not loaded, and the movable member is not applied with thrust force, thus the chain is easily returned to a straight line state by tension from a driving part to correct meandering motion.