Patent GB-830583-A (GB)
Abstract: 830,583. Adding-machines; feeding webs. NATIONAL CASH REGISTER CO. April 22, 1958 [May 21, 1957], No. 12690/58. Classes 100(1) and 100(2) A device for printing data on a record material strip includes a changeable printing member, a carrier for the printing member manually movable from a first position where the printing member can be positioned on the carrier to a second position where the printing member prints on the strip, a manually operable mechanism for impressing the strip on to the printing member, and a feeding mechanism for the strip which is actuated on movement of the carrier from the first position to the second position, to impart feed to the strip, to present a blank space thereof to the printing members. A printing plate such as an address plate fits by means of a rectangular recess in its lower surface, over a locating plate 39, Fig. 4, secured to an operating plate 40 in turn secured to a T-shaped slide 41 slidable in a T- shaped slot in a bracket 44. In its normal intermediate position, the plate 40 is retained by a spring finger 57 on the bracket 44. The plate can be moved to the left into the position for removing or positioning a printing plate by means of a finger piece 59 against the force of a spring 50 secured at one end to a stud 45 extending from an auxiliary slide 43 sliding in the slot in the bracket 44, which slide abuts the slide 41 in its intermediate position but is prevented from further leftward movement by the engagement of the stud 45 with the left end of a cam slot in a feed arm 48 pivoted to the bracket 44 at 49. The plate 40 can be moved to the right into printing position by means of the finger piece 59, and in this position the finger 57 engages a groove 58 in the plate 40. Cylinder machines. A platen roller 77, made of porous material such as synthetic rubber and storing within itself sufficient ink to make several prints, is mounted on a shaft 89 between parallel plates 78. 79 pivoted at 80 to fixed brackets 81, and the shaft 89 carries two rollers 90 engaging horizontal guide slots 91 in the plates 78, 79. At rest, the plates 78, 79 are urged clockwise into a slightly inclined position by a spring 92, pads 94 engaging a machine frame 20. When a hand-lever 76 pivoted at 83 is moved downwards, the plates are first moved into horizontal printing position as shown in Fig. 4. Further depression of the lever causes the roller 77 to roll over the strip to be printed and press it against the printing plate, by means of a link 85 and arms 87, 88 pivoted at 99. Ink flows out through capillary-sized pores in the roller 77 only where pressure is produced by contact with the raised data, to print a positive on the upper surface of the strip. Feeding webs. A strip to be printed passes from a supply roll over the printing plate and under the platen roller assembly in printing position and on to a take-up roll comprising a core 28, Fig. 3, held in place by a screw 33 and sleeve 30, Figs. 3 and 8, on a stud 29 secured to the frame 20. A ratchet 31 rotatable on the stud 29 has pins 32 engaging holes in the core 28. When the plate 40, Fig. 4, is moved to the right into printing position, the auxiliary slide 43 is pushed by it, and the stud 45 moves along the cam slot in the feed arm 48, which is thereby swung counter-clockwise as viewed from above about its pivot 49, guide rollers 64 on the arm 48 riding in a slot 65 in a fixed plate 21. A stud 67 secured to gear-sector 68 pivoted at 69 extends through an arcuate slot 74 in the plate 21 and a vertical slot in the arm 48, so that movement of the arm rotates the sector 68. The sector 68 engages a pinion 70 free on the sleeve 30, and integral with the pinion is a drive plate 71 carrying a pawl 72 which engages the ratchet 31, so that the strip is fed one step on each movement of the plate 40 into printing position. The device is used in association with an electrically operated cash register which prints cash items and totals on the strip, which is fed during this process by a ratchet 35. After the final total, the printing plate, bearing a customer's name and address is inserted, the strip fed by ratchet 31, arid printing takes place. If it is desired to print also on a duplicate slip, the latter is inserted above the strip, the roller 77 printing on the top of the original sheet of the slip, each slip sheet being of a special duplicating material to reproduce the print on the duplicate sheet and on the strip.