Patent GB-1040886-A (GB)
Title: Improvements in or relating to printing devices
IPC: B41F31/22
Filed: 1962-06-15
Abstract: 1,040,886. Printing apparatus. MOLINS ORGANISATION Ltd. June 10, 1963 [June 15, 1962], No. 23161/62. Heading B6C. Web-printing apparatus, which may form part of a continuous rod cigarette-making machine, includes inking apparatus comprising a hollow cylindrical ink-containing roller 51 having a hole or series of holes 54 in its cylindrical shell 52 through which ink is centrifugally forced, the ink being spread over the outer surface by a member, e.g. a transfer roller 55 or 56, between which and the roller 51 there is relative axial movement. In one form, the roller 51 is reciprocated axially, and two transfer rollers 55, 56 supply ink to a printing cylinder 58. The rollers 55, 56 have different diameters so as to ensure an adequate supply of ink to the printing parts 57 of the cylinder 58 for differing spacings of the parts 57. The ink-containing roller 51 is fixed to one end of a shaft 53 by a releasable catch 92, the other end of the shaft carrying a gear 78 engaging a driving gear 76 and also having a bearing collar 65 with which engages by means of a spherical bearing 66 one end of a lever 67 pivotally mounted about the shaft of the gear 76. Between the gear 76 and a base-plate 70 on the lever 67 is an isosceles-shaped plate 74 freely rotatable and carrying two balls 72 at the base corners and a larger ball 71 at the apex. The balls ride in grooves 69, 75 in the parts 70, 76 so that as the gear 76 rotates, an oscillating movement is imparted to the lever 67 so as to reciprocate the shaft 53 and roller 51. The latter, which includes a removable cover 96, has a resilient member 79 movable over the holes 54 to cover some of them and adjust the amount of ink passing outwardly from the interior. The member 79 is carried by an arm 80 passing through a hole 81 in the roller and fixed to a lever 85 rotatable about a pivot 86. The lever 85 is weighted, and centrifugal force as the roller 51 rotates, causes it to move the member 79 in a direction to block the holes 54. Due, however, to the viscosity of the ink and to the action of a manually-settable projection 90 which, once during each revolution of the roller 51, can engage the lever 85 and move it in a reverse direction, the member 79 remains in a position determined by the setting of the projection 90. If the roller 51 is stationary, with the holes 54 situated at the lower part of its periphery, the weighted lever 85 causes the member 79 to move to a position to close the holes. In another arrangement, two machines are provided for printing in two colours on a cigarette-paper web. Each machine comprises an ink-containing roller similar to the roller 51, an axially reciprocated transfer roller engaging the inkcontaining roller and feeding ink to rollers similar to the rollers 55, 56. To reciprocate the transfer rollers an arrangement similar to that shown in Fig. 2 is employed, the lever 67 extending on both sides from its pivot so as to operate both rollers. The line of holes in the inkcontaining rollers extends at an inclination to a circumferential line and the operative numbers of holes is varied by means of an internal axially adjustable mask.