Blanket cylinder construction for printing press

摘要

A blanket cylinder having a longitudinal groove of rectangular cross section formed therein with an insert of matching "U"-shaped section dimensioned to seat in the groove. Reinforcing bars at the end of the blanket are received in the insert to extend along the inner walls thereof, the reinforcing bars presenting, along their inner edges, upwardly facing ledge surfaces. A longitudinal clamping bar dimensioned to bridge and clampingly seat upon the ledge surfaces has a series of radially oriented cap screws threaded into holes in the bottom of the groove, so that upon tightening of the cap screws the reinforcing bars are drawn downwardly to tension the blanket. The insert has integral flanges along its presented edges over which the ends of the blanket are bent at right angles, the flanges extending mutually inwardly so that a minimum gap is defined by the flanges thereby to enable use of the blanket cylinder with a plate cylinder having a maximum of printing area.