GB617213A - Improvements in or relating to rotary printing presses - Google Patents

Abstract

617,213. Printing - machines. GOSS PRINTING PRESS CO., Ltd. Aug. 9, 1946, No. 23714. Convention date, Aug. 31, 1945. [Class 100(ii)] Inking-apparatus.-In a rotary printing press having a fountain roller and a doctor blade co-operating therewith to control the thickness of the ink film, ink shut-off and adjusting means are provided comprising a plurality of adjusting screws to cooperate with the blade and control its setting, each screw being axially movable on rotation by engagement with a nut non-rotatably mounted in a carrier and the nut and screw being axially displaceable, and a member having a plurality of separately adjustable elements each adapted to be set to co-operate with a separate screw on adjustment of the latter, so that on depression of the member all the screws are depressed to cause the blade to cut off the ink film. The blade 14 is divided according to columns into sections, each cooperating with a screw 23. The nuts 22 are held in cylindrical bores in the blade carrier 18 and have square tops engaging a longitudinal groove 19 therein. Each screw carries a worm-wheel 27 engaged by a worm 32 on one of a series of flexible rods 31 passing warpedly through loose bearings in a plate and to a control panel, and having squared ends for rotation by a tool, and being also supported by yoke collars 29 axially fixed on the screws. Each screw co-operates with one of a plurality of adjustable threaded elements 35 in a shut-off board 33 pivoted in a fixed bar 24. The board is pivoted to depress all the screws for page shut-off by a plunger 40 moved down against the action of a spring 41 by rotating a cam handle 45 having a movable pivot pin 43 and cam surfaces engaging a surface of the carrier. On return rotation of the handle 45, the spring raises the plunger and the blade raises the screws to their adjusted positions.