Patent GB-242308-A (GB)
Abstract: 242,308. National Cash Register Co., (Assignees of Brand, S.). Feb. 2, 1924, [Convention date]. Cash registers with several item-value totalizers. -In a machine of the key-set and lever-operated type, total-taking control mechanism is provided wherein a key or spline mounted in the totalizer shaft is positioned and operated on total-taking operations to zeroize a selected totalizer while in engagement with the differential actuating members. The machine shown is of the Shipley type comprising three lines of totalizers arranged for operation in a manner similar to that described in Specification 8119/15. Keyboards; differential mechanism. - The key banks, differential latch mechanism, and the totalizer actuating mechanism are identical with those described in Specification 228,567. Transfer mechanism. - This mechanism is similar to that described in Specification 242,307. Totalizing-counters.-The lines of totalizers are arranged on shafts 35 carried by arms 36, 37 secured to shafts 38. The shaft's 35 have ribs 104, Figs. 4 and 13, and each adjacent pair of ribs supports a totalizer element 34, 106, with an internal projection 103 entering the space between the ribs. The selection of the totalizer is controlled by three banks of control keys which cooperate with differential members and beam actuators 41, Fig. 2, to position corresponding gear sectors 54, Fig. 8. The beam transmits themovement through a link 42 and sector 44 to a shaft 45 and thence through a sector 48 and link 51 to an arm 52 integral with the sector 54. Each sector 54 gears with a corresponding pinion 55 loosely mounted on the shaft 38 and each has secured thereto a cylindrical member 56, Fig. 5, having a cam-slot 57 co-operating with a roller 58 that is supported in a casting slidably mounted on a shaft 61 and provided with a projection 62 surrounding the shaft 35, the shaft being caused to move longitudinally to select the totalizer in accordance with the rotation of the pinion 55. The lines of totalizers are moved to engaging position at each operation of the machine by means of a cam-disc 67, Fig. 9, rocked by an operating shaft 168, the cam-disc engaging rollers 65, 66 on arms 64 secured to the ends of the shafts 38. Movement of the cam-disc 67 to effect the engagement of the totalizers and the actuating members causes, at the same time, the withdrawal of the aligning plate 71 by means of a pin 76 on the cam-disc rocking a lever 75 the outer end of which has a cam surface engaging rollers 77 on a lever secured to the shaft 61 which is thereby rocked and through an arm 74 on the shaft moves the rod 73 supporting the yoke member of the aligning plate 71. Printing totals and sub-totals. - During totaltaking operations the machine is given two cycles of operation, the first being necessary to restore the transfer parts and position the selected totalizer. The movement of the totals lever 133, Fig. 11, from a normal addition position to any one of three positions above or below the adding position rocks a cam-plate 82 adapted to release the differential latch member by means of the arms 84, 87 on a shaft 85, and to withdraw the zero trip pawls 90 by rocking the shaft 91 to depress the rod 93 and the arm 94 on the shaft 190 carrying the pawls 90. The plate 82 has a flange 96 with three differently-shaped cam slots formed therein in each of which engages a pin 98 mounted on a member 100 secured to a hub 101 slidably mounted on the corresponding shaft 38. An arm on each member surrounds one of the shafts 35 and engages a notch 102 in a key or spline 95 slidable along the shaft. In adding operations the key is inactive as the shaft 35 is not rotated. When the key and the selected totalizer are positioned in the plane of the actuating member the shaft 35 is rotated, whereupon projections 105 on the key pick up the projections 103 on the totalizer elements and return them to zero. The rotation of the selected shaft 35 is effected by a corresponding toothed sector 110, Fig. 12, adapted to engage a pinion 111 integral with a disc 112 and hub 113 connected to the shaft 35 by the key 95. The pinion 111 is held in alignment with the sector 110 by means of a flanged member 114 fast on the shaft 38. Any suitable mechanism may be provided for operating the sectors 110. In total-taking operations the differential member must be moved from its blank position to the zero position so as to position the type wheels. For this purpose a pin on the differential member is adapted to be engaged bv a cam surface 115 on the main operating arm 116.