GB909560A - A new or improved liquid feed device - Google Patents

Abstract

909,560. Inking-apparatus. ALLERS ETABLISSEMENT A.S., CARL. Dec. 1, 1958, No. 38705/58. Class 100 (2). In an inking-apparatus comprising a fountain roller partly immersed in ink in a trough, the thickness of the ink film being regulated by a doctor blade, the roller is driven intermittently from a continuously rotating component through a pin and slot drive, the slot being shaped so that engagement of the pin and slot moves the roller forwards while disengagement moves it in reverse by a smaller amount, thus preventing the build-up of matter between the doctor blade and the roller. The fountain roller 2 of an ink fountain 1 for a printing-machine co-operates with an adjustable dust-blade 3, and is rotated intermittently by a continuously rotating electric motor through a shaft 21, gear 22, gear 11, rollers 10 on the gear 11, and slots 9 in a disc 8 on the fountain roller shaft 7. The axis of the gear 11 is within the periphery of the disc 8, and the leading faces 13 of the slots 9 are rounded at 14, so that at the end of its forward movement, the roller 2 is moved slightly backwards, to avoid collection of dirt at the blade 3. The degree of backward movement is variable by altering the axial distance between the shaft 7 and the shaft 12 of the gear 11, one or both shafts being mounted in eccentric bearings. Ink from the roller 2 is transferred to a distributer roller 6 by a transfer roller 5 of the construction described in Specification 908,692 the roller 5 being also driven by the motor.