Patent GB-199536-A (GB)
Title: Improvements in inking mechanism for printing machines
IPC: B41F31/02
Filed: 1922-04-12
Abstract: 199,536. Hoe & Co., Ltd., R., (Hoe & Co., R.). April 12, 1922. Inking-apparatus. - Relates to inking-mechanism of the kind described in Specifications 20195/14, 126,815, and 152,657, wherein ink contained in a reservoir alongside the distributing- cylinder is delivered under pressure and in regulated quantity by plunger pumps located in the reservoir to a number of conduits, each of which supplies one column or other section of the forme, means being provided to vary independently the stroke of each plunger for regulating the supply of ink delivered to each column, and consists in the provision of a controller at a point remote from the ink-feeding devices, e.g. adjacent to the web-folder, whereby, in the case of a machine comprising two or more printing couples, the operator may regulate their ink supplies without the necessity of moving around to the several reservoirs. As shown in Fig. 1, the feeding- devices of the reservoirs 5, 10 supplying ink to the distributing-cylinders 3, 8 of the printing couples 1, 2 and 6, 7 are controlled from stations 12, 13 near the folder 11. Fig. 4 shows one of the reservoirs 15, the bottom 17 of which is apertured to receive the ink conduits 18. The latter communicate with ports 24 in a frame 22 which reciprocates horizontally along guides 23. Plungers 25 working in the ports 24 are supported in openings 28 in a second frame 27 by springs 38 so that collars 26 fast on the plungers are in contact with the underside of the frame 27, and the latter is reciprocated horizontally and at the same time given an up-and-down movement by means of gear-driven eccentric shafts 29, 30. When the frame 22 is moved to the left, the ports 24 communicate with the ink in the reservoir, and the upwardly-moving plungers 25 suck ink into the ports. When the frames are moved in the opposite direction, the ports 24 are put in communication with the conduits 18 and the ink in the ports is forced through the conduits on the downward movement of the plungers. The quantity of ink delivered is regulated by limiting the lift of the plungers by means of stops 42 supported by springs 43 in bosses 41 on the cover 16, the position of the stops 42 being adjusted by screws 45 threading through blocks 46. The latter are pivoted on studs 48 and provided with ears 49 connected by wires 50 to the distant controller, Fig. 6, which consists of a box 54 having a number of pivoted two-armed levers, one arm 59 being connected to controller wire 50 and the other arm 60 engaged by an adjusting screw 56. The plungers may be arranged in rows or sets, Fig. 4 having an arrangement of four sets, each set extending in a direction at right-angles to the plane of the paper and supplying the columns of a whole page, and means may be provided for varying simultaneously the ink supply from the whole set. This may be effected by adjustable bars 65 under the ports 24 having ports 68 normally in full communication with the conduits 18. When the supply of ink from all the plungers of one set is to be diminished, one of the bars 65 is moved longitudinally so that part of the ink from the ports 24 escapes back to the reservoir by way of by-pass ports 69.