
A conveyor comprising an accelerating region, a steady speed region and a decelerating region has its belt composed of belt segments. Each belt segment has a flexible part deflectable from the path of the belt by winding onto a winding member carried by a neighbour segment. The length of the segment wound on the winding member is controlled by a crank fast with the member. The free end of the crank carries a cam follower roller guided on a cam rail.











