GB332320A - Improvements in inking mechanism for printing machinery - Google Patents

Abstract

332,320. Claybourn, L. W. May 6, 1929. Inking-apparatus. - In an inking-apparatus, particularly for applying inks containing metal powder or other heavy colour constituents, the ink reservoir is provided with a rotary ink-agitating drum which keeps the ink in a thoroughly stirred condition and has an ink-retaining periphery from which the ink is transferred to the distributing-rollers of the apparatus. The apparatus may form an attachment to an inking- mechanism of the construction described in Specification 293,332 but may be independent of the usual inking-mechanism and may be applied to a flat-bed machine. One or more reservoirs 21, Figs. 4 and 6, may be provided, adjustable laterally of the machine and secured in position by bolts 65. Each reservoir contains a rotary agitating drum comprising a shell 25, Figs. 4, 6, and 7, provided with undercut longitudinal slots 28, and having pin and slot connection with end discs 112, Fig. 7, which are secured to a central sleeve 109. The spindle 102 of the drum is operatively connected with the sleeve 109 by a pin and slot connection 101 which allows the spindle to be withdrawn upon removing an end nut 107 to allow removal of the drum for cleaning purposes. Spaced from the drum is a composition-covered roller 32 which is similarly removably mounted on its driving spindle. 118. Ink is transferred from the periphery of the drum to the roller 32 by transfer members comprising discs 31, Fig. 6, connected by a shank 34. The transfer members rest freely upon the drum and roller and are free to move axially. A series of transfer members having discs 31 of different widths are provided to allow of adjustment of the amount of ink applied to the roller 32. A modified construction of ink-transfer member is shown in Figs. 12 and 13 and comprises, in addition to the discs 31, radially movable quadrants 41 which can be held in the inoperative position shown, or in an expanded position in which they act also as ink-transfer surfaces. Spring-pressed balls 49 engage recesses 48 to hold the quadrants in their adjusted positions. The roller 32 contacts with a roller 126, Figs. 4 and 6, in contact with one of the distributing-rollers of the inking-apparatus, and the roller 32 and agitating drum are driven from a gear 75, Fig. 6, on the shaft of the roller 126. This gear 75 drives a gear 81 on the shaft of which is a gear 87 which drives a shaft 89 by means of a gear 88. Splined upon the shaft 89 are as many gears 92 as the maximum number of reservoirs that the machine, can accommodate. When the reservoirs are secured in position, a corresponding number of the gears 92 are moved into engagement with gears 91 on the shafts of the agitating drums and secured to the shaft 89. The rollers 32 are driven from the gears 91 through idle gears 95.