GB169826A - Improvements in inking and wiping mechanism for plate printing presses - Google Patents

Abstract

169,826. Solomon, R., and Shryock, G. H. July 7, 1920. Inking-apparatus. - Inking and wiping mechanism for plate printing- presses comprises a frame 2 carrying a recessed table 3, a support 5 sliding on the table and carrying a plate 6, an ink-trough 7 and roller 8 supplying ink to an inking roller 9, an adjustable wiping-roller 12 in the path of movement of the plate, a scraper 23 bearing against the wiping-roller 12 and secured to one edge of a box 24 for receiving the removed ink, springs 29 engaging the box 24 and yieldingly pressing the scraper against the wiping-roller, and a flexible wiping- band 51 wound on drums adapted for step-by-step movement. The roller 8 is positively driven and drives the inking-roller 9 frictionally. The wiping-roller 12 is supported by slidable bearing-boxes 17, Fig. 1, adjusted by swivelled screws 19 and pressed downwards by springs 13 adjustable in tension by screws 22. The box 24 slides in guides 33, Fig. 2, and may be released for removal by swinging the brackets 31. carrying screws 30 against which the springs 29 abut, about pivots 32. The drums carrying the wiping-band 51 are mounted on spindles 50, Fig. 3, supported in the halves of bearing-boxes connected by links and screws, and are given their step-by-step rotation by a reciprocating rod 61 which oscillates a rod 59 fixed to a pivoted arm 56. This arm is connected by a cross-bar 54 to levers 52, which are pivoted to the spindles 50 and carry pawls engaging ratchets 62 on the drums. The band 51 passes under a felt pad 44 fixed to springs 45 secured to blocks 45<1> slidable in guides 42, and adjustable by swivelled screws 45a. The whole of the wiping-band mechanism is rotated by revolving shafts 36 fixed to discs provided with diametral undercut slots 39 engaging the conical heads of bolts 40 secured to the lower flanges 41 of the guides 42.