Abstract: Method of, and apparatus for, making books using the two-up, coming and going method in which halfblocks, two of which form a double book block, are moved in a single stream, alternate halfblocks being turned through 180.degree. as they move and the halfblocks being collated in pairs each pair containing a turned and an unturned halfblock.

Abstract: Apparatus for punching out a plurality of notches of successively different lengths in an edge portion of a travelling web formed by a pair of rotatable wheels between which the web travels. A plurality of cutting elements, each formed by a bridge-type member having a pair of limbs, are located on one of the wheels with the space between the pair of limbs of each bridge-shaped member being different. The other wheel carries a plurality of cutting punches, each of a size and arranged to fit between the pair of limbs of a bridge-shaped cutting element on the other wheel to provide a shearing action upon engagement with the limbs of a said cutting element.

Abstract: A method and apparatus for assembling a block for a book or book section in a 2-up coming and going method of bookmaking by providing a stream of groups of book elements, each group containing all the primary pages of the book or book section. The groups of the stream are divided into first and second series and the groups of the first series are conveyed to a combining station around a turn-over member rotating about a horizontal axis so that each group of the first series is turned through 180.degree.. The groups of the second series are separately conveyed to the combining station and each group is arranged to be in half-block form before it reaches the combining station. At the combining station, the half-blocks of the series and the half-blocks of the second series are brought together in pairs by bringing each half-block of one series under a half-block of the other series to form blocks each comprising a half-block of the first series and a half-block of the second series.

Abstract: A method and apparatus for assembling a block for a double book or double book section in a 2-up coming and going method of bookmaking by providing a stream of groups of book elements each containing all the primary pages of the book or book section. The groups of the stream are conveyed along a rectilinear path towards a rotary turn-over member and alternate groups of the stream, which form a first series, are diverted from the path to pass around the turn-over member so as to be turned through 180.degree. about as axis parallel to the junction between the two pages on each leaf of group while the remaining groups, which form a second series are caused to continue along said path. The groups of the first and second series approach a combining station from opposite directions and are combined in pairs at the station.

Abstract: A dampening device supplying water or other ink repellent liquid to the printing plate of a lithographic offset rotary printing press, such device comprising a rotary cylinder, the wall of which comprises an inner coarse mesh element supporting an outer fine mesh element that picks up water from a trough into which it dips and from which the water is projected as a spray by means of air impinging on the interior surface of the cylinder at a delivery station from a series of nozzles or a tube having an axial slot, the fine mesh element having a mesh size that will ensure that each aperture is spanned by the liquid, and the coarse mesh element having apertures of a size such that they are not so spanned, and the space between the cylinder and the printing plate or transfer cylinder of the printing press being unobstructed in the circumferential direction.