Abstract: Device for roughening the edge surface of a plurality of sheets to be bound into a book, in which the sheets are clamped, with one edge surface thereof facing a rotatable cutter, which is moved along the length of the edge surface while the cutter is rotated so that the blade traverses the edge surface thereby producing successive arcuate scores in the edge surface. When adhesive is applied to the edge surface, the cuts or scores help provide a stronger binding force than if the edge surface were flat.

Abstract: A bookbinding machine wherein a book comprising a plurality of sheets of paper or the like to be bound together is clamped by a clamping device at a first position and the clamping device with the book is reciprocated between the first position and a second position. In the course of reciprocation adhesive is applied to one edge surface or back of the clamped book. When the clamping device has been returned to the first position after reciprocation, a cover sheet on a supporting plate is applied onto the back of the book by raising the supporting plate, which is then moved away from below the clamping device after application of the cover sheet to the back of the book so that the book may be easily taken out of the machine from below the clamping device by gravitation or otherwise.