Abstract: A conveyor consisting of a U-shaped stationary track (1) with the opening upwards. A rod-shaped support (2) may be reciprocated in said stationary track, the upper edge of said rod-shaped support (2) being lifted above the opening of the stationary track (1) upon movement in the forward direction and being lowered below this opening upon movment in the return direction. To simplify the manufacture and operation of the conveyor the rod-shaped support (2) is connected with a rail (4), slidable in the bottom of the U-shaped stationary track (1), by use of rotatable links (3). The rod-shaped support (2) and the rail (4) form two sides in a parallelogram whose other sides are the rotatable links so that the rod-shaped support (2) and the rail (4) are both rotatably connected with a handle (87), which is used for displacing these two parts with respect to each other and thereby lifting or lowering the upper edge of the rod-shaped support with respect to the opening of the stationary track (1).