A rolling conveying device including guide rails 6, 6\u2032, 5\u2032 in which, respectively, at least one rolling body 1, 1\u2032, 8 with a plurality of freely rotatable rollers 2 is arranged in operational interaction with a plurality of conveying bodies 10 which are freely displaceable between the rollers of the rolling body. The support includes a housing having a bottom and a wall portion extending from the bottom along the dimension of elongation of the weapon. It may optionally include a second row of teeth, or an individual tooth, that incorporates additional strands of hair into the curl. A difficulty arises when a process or a machine that last modified the state dies or is temporarily or permanently unavailable. The server then initiates a distribution of the contents-pieces to the registered sets of clients, wherein the contents-pieces are selected in accordance with the order of the clients.