The figure represents the simpler construction. The two wooden bars AA are provided with handles up and take down in strong wooden blocks with iron store the bikes EE. The bag rests on the half-round, wrought-iron frame G, which can be moved up and down through a guide in the beams AA. The same is connected by the chain F with the likewise mounted on the beams A wave B, which can be rotated by a hand crank D in rotation, thereby unwinds the chains F, and raises into the frame G with the thereon sac.