GB191510154A - Improvements in "Multicolor Printing Presses." - Google Patents

Abstract

10,154. Turck, F. M. July 12. Sheet carriers, guides, and smoothers.-A multi-colour printing-machine has a rotary sheet-carrier with grippers 28, Fig. 2, by which the sheets are taken from the feed table 29, carried between the printing-couples 4, 6 and 5, 7 and when each sheet has received the full number of impressions, delivered to tapes 31 by a switch 34. The carrier is constructed with transverse bars 16 and grippers 28 extending between heads provided with rollers running on curved supports and driven by gear from the forme cylinder 4, which is driven through the impression cylinder 6 from the main shaft. The bars 16 divide the carrier into seven sections. A sheet in the section 21 will receive successivelv four impressions and will then be delivered, a sheet being fed and delivered at each revolution of the printing-couples. The sheets held by the grippers lie on curved bars extending from the bars 16 and are further supported in the higher part of their travel by brushes 40 mounted on brackets 42. Fixed guides 43 prevent the sheets from rising from their supports, and jets of air from pipes 44 hold the sheets against their supports when near the printing positions, and also serve to dry the impressions. In the arrangement shown in Fig. 3, only one pair of printing-cylinders 54, 55 is employed, and the sheet-carrier 60 is divided into five sections by the gripper bars 56, and carries only three sheets