Abstract: Nestable and stackable box comprising a rectangular bottom, two side walls and a back wall, which walls diverge, starting at the bottom, a lowered front wall and a fold-away stacking support. The front of each side wall has been bevelled off to make an obtuse angle with the top of the side wall, and each side wall has been provided with an opening near its front, the vertical plane bounding the opening at the front being totally before the perpendicular dropped from the vertex of the obtuse angle between the front and the top of the side wall upon the bottom. The part of the wall section between the opening and the front of the side wall goes outward as it goes downward, to a distance of one to three times its horizontal wall thickness, to form a ridge having a width of one to three times the horizontal wall thickness.

Abstract: A process and device for collecting and maintaining fresh amounts of rainwater. The device is comprised of a storage vessel having an inlet passage terminating near the bottom of the vessel, which is further provided with an overflow and a drain. The device possesses a through-pipe which becomes positioned in line with sections of a downspout between which the device can be installed. Water is introduced into the vessel via an upper downspout section and a branch pipe and excess water above the vessel's capacity is discharged via an overflow passage directly into the through-pipe and a lower downspout section. The vessel and its parts are preferably made in one piece by blow-molding a plastic material. The device is substantially intended for collecting small amounts of water.