GB454217A - Improvements in and relating to rotary stencil duplicating machines - Google Patents

Abstract

454,217. Rotary stencil duplicators. GATES, G. F., 253, Philip Lane, and GESTETNER, Ltd., D., Neo-Cyclostyle Works, both in Tottenham Hale, London. Dec. 22, 1934, No. 36854. [Class 100 (ii)] Inking-apparatus.-Relates to inking-apparatus for rotary stencil duplicating machines, of the kind comprising a number of ducts which may extend in a direction generally parallel with the axis of an inking-cylinder and are furnished with ports whereby the ink delivered as a single stream from a container is divided, as it passes from a duct to a succeeding duct, into an increasing number of streams, and is finally delivered to the inking-cylinder at a number of points in its length, and consists in providing for each port by which ink enters a duct, two outlet ports, one to the right of the inlet port, and the other an equal distance to the left, and in so arranging the ports that the ink enters the first duct by a port positioned midway between the opposite extremities of the line on which the ink so entering is finally delivered. As applied to a duplicator of the type comprising a pair of inking-cylinders 4, Fig. 2, connected by stencil-carrying bands 6, ink from a container 9 passes into a tube 35 arranged parallel to the cylinders 6 and is delivered to the lower cylinder. The tube 35 has three angularly-spaced slots 36 ... 38, Figs. 11 and 12, and is adjustable about its axis to bring one of these slots into line with one of four slots 51, 52, 53, 56 in an outer tube 54 to supply ink to the left half of the cylinder, the whole length, the right half, and the central portion respectively. The ports 51 ... 53 communicate with a duct 57 having two outlet ports 61, 62 forming inlet ports to a duct 58 having four outlets 63 ... 63<c> forming inlets to a duct 59 with eight outlets 64, 64<a>, &c. forming inlets to a duct 60 with sixteen outlets 65, 65<a>, &c., each inlet port being midway between the corresponding outlet ports ; the port 56 opens directly into the duct 58. The container 9 is supported in a cradle 10, Fig. 2, mounted on a pivoted shelf 8 and comprises a movable base 11, Fig. 3, which is displaced to the left to expel ink through a nozzle 29, by a plate 12 fixed to a tube 13 carrying releasable claws 14 engaging a screw 22 adapted to be rotated by turning a lever 23. An index finger 17 carried by the tube 13 indicates on a scale the amount of ink in the container, and a stop releases the claws when the container is empty.