Patent ID: 7614838

Claim:
A device in a book case machine to produce cases with rounded corners, in which at least one cover board having four corners formed at intersecting lateral borders is glued on one side to an oversized cloth material, forming intersecting lateral edges of the cloth and corner regions of cloth defined by a plurality of tabs, and the edges of the cloth material are subsequently turned over and pressed onto the other side of the cover board on a pressing table, comprising: means for turning upright a first lateral edge of a case as the case is transported onto to the pressing table, turning over, and then pressing on said first lateral edge; a pair of rounded corner tools for uprighting and turning over the corner edge at each of two rounded corners associated with said first lateral border, said tools each having a concavely shaped guide surface that is adapted to the rounded corner, and an uprighting edge for turning upright the corner edge of the case as the case is transported downwardly to the pressing table such that the rounded corner of the case moves along the guide surface, wherein the pair of rounded corner tools and associated means for turning upright a lateral edge of a case are arranged at the same table; the device uprights the edges of the cloth at said corners and along the associated lateral border simultaneously, turns the edges over, and subsequently presses the edges on the upper side of the cover simultaneously; when the case is on the table, each rounded corner tool is movable toward the center of the case in order to turn over the uprighted corner edge immediately before the turning-over and pressing-on movement of the means for turning upright a lateral edge of a case; and the rounded corner tools are movable out of the effective range of the means for turning upright a lateral edge of a case, whereby the lateral turn-in means can press on the turned-over corner edge.