Patent GB-912273-A (GB)
Title: Improvements relating to printing machines
IPC: B41L45/00
Filed: 1960-11-25
Abstract: 912,273. Addressing-machines; inking-apparatus. ADDRESSOGRAPH-MULTIGRAPH CORPORATION. Nov. 25, 1960 [Dec. 7, 1959], No. 40634/60. Class 100 (2). A machine wherein printing devices bearing type characters are advanced in series from a supply magazine to a sensing station for printskip selection and thence to a printing station includes means for inking the devices prior to reaching the printing position, said means comprising an ink roller mounted in a reciprocating carriage so as to move to and fro over the printing devices, the roller being in the plane of the type faces during forward movement and above said plane during return movement. Printing and control devices D, Figs. 1 and 11, are fed to a position wherein tabs CT thereon are sensed by pins SP, thence to a position wherein they are inked by a roller 32, and thence to printing position. The inking apparatus is controlled by a master clutch 90, Fig. 4, and by a clutch 105 driven therefrom and operative only when a solenoid SOL is energized. The solenoid is energized only when a cain-actuated timing switch is closed, and when rocking of a shaft 608, in response to sensing of tabs CT or their absence and according to the length of the pins SP, rocks a member RW to connect a line WO to one of contacts 1-6, thereby energizing the solenoid according to the presence or absence of a tab and to the setting of a manual selector switch SSW by an axially adjustable shaft CL. In the leftmost position of the shaft CL to connect contacts C5, C6, the solenoid is energized on every cycle independently of the sensing. Inking-apparatus.-Ink is passed from a fountain 45 by a fountain roller 46 to the ink roller 32 by a train of rollers including an oscillating ductor roller 55 and distributing rollers 63, 68, 69, the roller 68 being driven continuously as long as the clutch 90 is engaged. The roller 55 is oscillated by a cam 66 on the shaft 67 when the clutch 90 is engaged. The roller 46 is indexed through a ratchet 125, Fig. 10, on its shaft stepped by a pawl 127 on a bifurcated member 120 actuated by an eccentric pin 118 on a gear 115, Figs. 4 and 10, when the clutch 90 is engaged. To stop indexing of the roller 46 when the machine is rolled, a lever 270<SP>1</SP>, Fig. 12, associated with the printing device feed mechanism actuates through a Bowden cable 310 a cam-plate 300 to act on a pin 127P and hold the pawl 127 inoperative. The clutch 105 is held out of engagement by an arm 92, Fig. 9, except when the solenoid SOL is energized. The ink roller 32, Figs. 1, 2 and 9, is supported on carriage plates 153, which are guided for reciprocation along a plate 150 by rollers 163, 169, and are reciprocated, when the clutch 105 is engaged, by means of a pin 270 on a gear 108, a series of levers and links and a yoke 252 pivoted at 251, with its lower end attached to the carriage. A second linkage system extends from a cam roller engaging a cam 215, Fig. 10, to a pair of linked arms 204, 205 pivoted at 200, 201 to a head member 180 connected to the plate 150 by studs 181, 183. Cam slots CS1, CS2 in the arms 204, 205 engage fixed pins 206, 207 so as to raise or lower the member 180, plate 150 and roller 32 as the arms 204, 205 are oscillated.