Patent GB-340089-A (GB)
Title: Improvements in or relating to addressing and like printing machines
IPC: B41L47/42
Filed: 1929-11-06
Abstract: 340,089. Hubbard, H. E. Nov. 6, 1929. Addressing and like machines.-In an address. ing or like printing-machine employing printing. devices, such as address-plates, provided with a number of lines of type characters, the printing- devices are moved intermittently so as to position the type lines singly and successively in the same straight line. Impressions of the separate lines may be printed side-by-side on a paper sheet which is moved in the direction of the type lines between successive impressions. As shown, the feed devices are arranged in the form of an attachment for a hand-operated addressing- machine of the general type described in Specification 22665/14. A platen arm 1, Fig. 4, adapted to be rocked about a pivot 4, carries push and pull pawls 17, 18 engaging a pin 21 on an arm 13, which is thereby oscillated about a pivot 14, and, through a link 12, reciprocates a slide 10 carrying pawls 9 adapted step-by-step to feed addressplates 7 from a magazine 6 to printing position and finally to discharge them into a receiver 8. A setting-rod 22, Fig. 5, is movable axially into three positions indicated 'by a pointer 23 and corresponding respectively to consecutive, repeat, and multiple printing. A yoke 25 fixed to the rod 22 carries an arm 25<1>, which, when the machine is set for repeat printing, lies in the path of the pawl 17, Fig. 4, and this pawl is disengaged from the pin 21 on the downward stroke of the platen arm 1 so that the slide 10 remains in the rearward position and the plate feed is discontinued; meanwhile, the pawl 18 rides on a cam 27 carried by the arm 13. When the machine is set for multiple printing, in this case triplicating, a ratchet 29, fixed on a shaft 30 carried by the yoke 25 is engaged, at each downward stroke of the arm 1, by a pawl 31 mounted on the arm, whereby a cam 28 fixed also on the shaft 30, is rotated intermittently and engages an arm 25" pivoted at 33 on the yoke 25 and moves the arm into the path of the pawl 17 which is disengaged and throws out the plate feed as before. After the third impression, a spring 34 returns the arm 25<11> to normal position, and the slide 10 feeds a plate forward to printing position. A cushioned stop 36, Fig. 4, engaging a fixed part 37 limits the rearward movement of the slide 10. and a spring 35 fixed to the link 12 retains the slide in the rearward position during repeat or multiple printing. The attachment comprises a frame 39, Fig. 1, secured by screws 39<1> to the main frame 5 of the machine. The sheet is clamped in a carriage 40 slidable laterally on the frame 39 and guided by means of a rod 41 on the former engaging lugs 42 on the latter. The carriage is moved to the right by hand and is returned in a step-by-step movement by a tension wire 43 coiled in a spring barrel 44, the return movement being controlled by a pawl 45 pivoted on the frame 39 and adapted to engage notches in a bar 46 fixed to the carriage. The pawl 45 is momentarily released at each upward movement of the platen arm 1, to allow one step movement of the carriage to the next notch, by a pawl 48 carried by a member 47, which is pivotally mounted in the frame 39, and is actuated by an arm 47<1> connected by a link 47" to the platen arm 1. The carriage 40 is cut away at 40<1> to expose an ink ribbon 38 and an addressplate 7, and a shield 49 fixed to the carriage protects the sheet from the ribbon and has either a long slot or, as shown, three sections 50 each the length of a line of type characters. The device for feeding the plates 7 for positioning the lines successively in line with the slots 50 comprises a series of stepped pawls 64, Fig. 4, carried by a rocker 65, which is pivoted to the member 47, and is rocked against the action of a spring 67, Fig. 1, by means of a screw 63<11> on the member 47, so that the pawls 64 feed the plate forward step-by-step. By adjusting the screw 63" and a screw forming a stop for the rocker 65, the stroke of the pawls may be varied. In operation, and where, as in the above example, the lines of a three-line address are to be printed side-by-side, the machine is set for triplicating, the first line is printed on the downward movement of the platen arm 1, and, on the upward movement, the sheet moves laterally and the plate 7 moves forwardly one step ready for the second impression, a similar movement taking place before the third impression. Sheet-registering devices.-The sheet is positioned in the carriage 40, Fig. 1, by means of an adjustable side gauge 51 and front edge gauges 52, 52', the latter projecting through arcuate slots 53, 53<1> and being carried by arms 54, 54', which are adapted to be adjusted about pivots 56, 56' and are secured in adjusted position by screws 57, 57<1>. Gripper mechanism.-A device for clamping the sheet on the carriage 40 comprises a bar 60, Figs. 1 and 4, provided with studs for engaging the sheet. The bar 60 is centrally pivoted on an arm 59, moved to clamping position by a spring and released by pressure on a handle 61.