Patent GB-240156-A (GB)
Abstract: 240,156. National Cash Register Co., (Assignees of Robertson, W. H.). Sept. 18, 1024, [Convention date]. Cash registers with item - printing mechanism; printing totals.-In a machine of the key-set and operated type with independent operation for total-printing and such as that described in Specification 142,436, total-taking is effected by forwardly rotating to zero the totalizer wheels and thus driving the actuators to position the total type wheels. These wheels take part in all movements of the item type wheels but are cornplementarily numbered so that under the zeroizing action they are set for printing the value originally standing on the totalizer concerned. The machine described is adapted for printing items of a transaction and their total on an inserted slip and has, in addition to the transaction totalizer, a grand totalizer from which a total may be taken at any time provided a selective manipulation is first made in order to disable the transaction totalizer and throw in the grand totalizer. Actuating-mechanism. The toothed actuating segments 34 driven by the differentially notched uprights 31, Fig. 6, are looked in their normal position by means of an extension 42 of one of a pair of arms 4 loosely pivoted in the segment at 40, the extension engaging a notched stationary crossbar 43. As the upright rises, an edge 45 meeting this bar cams the upright forward to push against a rod 46 carried by the arms 41 and so dislodge the extension 42. Totalizer-engaging mechanism. As usual the totalizers are carried in frames rocked by cams on the main shaft 53 to throw the totalizer pinions into gear with the actuators 34. To prevent movement of the actuators until the pinions are fully in gear a projection 65 on each actuator is held by a cam 66 on the shaft until this has turned sufficiently to throw the pinion in. Type-wheels, setting and aligning. The item type-wheels 38 (Fig. 19) are connected by nested sleeves with pinions 35 (Fig. 6) engaging the actuators 34 and they drive in turn through pinions 96, the total type-wheels 141. The wheels are aligned by a bar 103 supported by arms from a shaft 229 and controlled by a cam on the main shaft 53 in item-entering operations and by a grooved cam 110 on the shaft 157 when total-printing. Impression is effected in known manner by the item hammer 116 operated from shaft 53 and by the total hammer 220 controlled by shaft 157. Transaction-total, printing. In taking a total from the transaction totalizer it is necessary to rotate the shaft 53 to a certain extent in order to engage the totalizer with the actuators. For this purpose the shaft has fixed to it a disc 145 (Fig. 13) slotted at 146 to receive a pin 147 carried by a pawl 148 mounted on an adjacent coaxial but loose disc. In item-entering operations the usual coupler-actuated double rack drives the shaft 53 through the medium of a pinion, fixed to the loose disc, and the pin 147. When it is desired however to take the total, the shaft 157 is given a complete rotation by the total-taking crank handle and rocks a lever 155 so as, through a cam groove 154 engaging the pin 147, to turn disc 145 and therefore shaft 53 slightly in a counterclockwise direction and thereby effect the engagement of the totalizer with the actuators. In order to free the latter to take up the setting corresponding with the amount on the totalizer, the locking extension 42 (Fig. 6) must be withdrawn and for this purpose a link 47 pivoted to the extension engages a pin in an arm 165 fixed on a shaft 166 rocked by a lever 155 through an arm 167. Zeroizing-mechanism. The totalizers are zeroized in the usual manner by rotating the grooved counter spindles to enable them to pick up pawls on the separate counter wheels. The spindle 188 (Fig. 22) of the transaction totalizer is connected by an universal coupling 189 with a shaft 187 adapted to be given one rotation by the total-taking shaft 157 through cam 175, lever 176 (Fig. 10) toothed sector 178 and ratchet and spur gearing disposed on a shaft 182 as shown. The grand totalizer may be zeroized similarly by the rotation of its spindle 188 when a clutch 270 271 is rendered effective by the selective means described below, this clutch connecting the spindle through another universal coupling 272 with the transaction counter spindle 188. To stop the totalizer wheels accurately at zero, a bail 202 (Fig. 6) is adapted to be lowered into the path of projections 200 on the wheels by connection with a spindle 205 rocked by a cam on shaft 182 (Fig. 10). The toothed sector 178 is operated by its link 179 through a spring- pulled pin and slot 208 so that after the stops have reached the bail the zeroizing shaft may have a slight overthrow for ensuring the zeroizing action. Return of the total-printing wheels 141 to zero is effected by a rod 227 (Fig. 19) carried by arms 228 and operating in slots 226 in pinions 225 gearing with the type-wheels. The arms 228 are rocked by a toothed sector and cams on a shaft 157. Printing totals selectively from the two totalizers. Normally the machine is conditioned for enabling a transaction total to be taken by the turning of the total crank handle. Consequently the grand totalizer must not usually be engaged with the actuators when shaft 53 is turned by the total-taking mechanism. To this end the engagement-effecting levers 55 (Fig. 6) bear against the totalizer frames 56 through the medium of plunger pins 57, notched at 256 (Fig. 18) and bevelled off at 255. Co-operating with the pins are cam edges 257 on arms 252, 252<1> so that, when one of these arms is raised the corresponding pin is thrust inwardly with the result that the lever 55 moves idly through the notch 256 and thus fails to rock the totalizer frame into position for engagement. At the same time a nose 285 rises behind a pin 286 to keep the frame stationary. Normally the righthand arm 252 (Fig. 22) is inactive so that the corresponding pin 57 remains effective and the transaction totalizer is engaged for totaltaking. When it is desired to take a total from the grand totalizer a finger lever 261 is pulled forward to thrust a bevelled edge 265 between arm 252<1> and an adjacent arm 251 which is fast on a sleeve 250 pinned to shaft 166 and carries a pin 249 normally engaging a hole in arm 252<1>. The action of the bevelled edge therefore is to slide the sleeve to the right and disconnect this arm from the sleeve. At the same time a pin and hole connection is made between arm 266 and the right hand arm 252 so that when the shaft 166 is rocked in the process of total-taking the grand totalizer is engaged with the actuators but the transaction totalizer is not. An arm 262 of lever 161 performs the function of sliding the clutch member 270 into engagement with the clutch member 271 connected with the transaction totalizer spindle so that the grand totalizer is brought to zero. In order to prevent separation of the clutch during the rotation, shaft 188 is provided with a disc 275 (Fig. 22) a notch in which is normally engaged by a flange on a stationary plate 277 thus locking the shaft. When the total is to be taken from the grand totalizer the sliding of the shaft to the right frees the disc from the flange and a complete rotation is necessary before the parts can resume their usual position. An interlock between the lever 261 and the total taking operating mechanism is provided by a flange 280 carried by the lever and co-operating with a flanged sector 281 secured to the sleeve 250.