Patent GB-237522-A (GB)
Abstract: 237,522. Haddan, A. J. H., (National Cash Register Co.). April 28, 1924. Cash registers; item and operation counters.- In a machine dealing with single and multipleitem transactions, a series of counters is provided to count the number of operations in their different classes, different counters being, employed for counting multiple-item transactions having fractional amounts such as half-cents in their total and multiple-items without such fractional totals. The five counters 186 - - 190 shown in Fig. 1 count respectively paid-out transactions, single-item transactions, multiple-item transactions involving half-cents, other multiple-item transactions, and the separate items of all multiple-item transactions. The counters are operated in the known manner by the rocking of a slotted plate 203, the selection of the counter being effected by the positioning of an arm 206 under the control of the differential mechanism of the transaction bank. When no key in this bank is depressed, the arm 206 occupies its zero position adjacent the end of a lever 220 pivoted at 200 and connected by a pin 221 with the sliding link 198 of the item counter. Thus with such a disposition of the parts, this counter receives actuation as each item of a multiple-item transaction is entered in the machine. If the half-cent key lying in position " 1 " of the transaction bank is depressed, the arm 206 will arrive opposite the link itself and consequently this same counter will be actuated. Counters 186, 187 are actuated in the ordinary way whenever the respective paidout and cash keys are depressed, but counters 188, 189 are actuated only when totals are taken from the multiple-item totalizer. To this end the obstruction of the links 198 is effected by the bent end 209 of a plate 208 slidably mounted on the arm and urged towards the axis 207 by a spring 212 but controlled by a fixed cam 213 and a cam 214 forming part of an arm 215. When a total not involving a fractional quantity is taken from the multiple-item totalizer, the half-cents pinion of the totalizer being at zero breaks the differential latch with the arm 206 at its zero position. The rocking of shaft 251 produced by the total-taking mechanism, of the kind described in Specification 8119/15, however, shifts the arm 215 and brings the lowest part of cam 214 into operative position to allow the spring 212 to withdraw plate 208 and so disable it. At the same time the end of arm 215 raises through a pin 291, a lever 292 pivoted to the arm 206 at 210, and thus brings the end 293 into effective position to cause actuation of counter 189. A similar action occurs when the multiple-item total contains a half-cent, but in this case the differential latch of the transaction bank is broken in the "1" position and consequently lever 292 is made effective to cause operation of counter 188. To prevent two actuations of the counters in the totaltaking operations due to the two cycles of operation, the preliminary clockwise rocking of shaft 251 derived from the setting movement of the total lever produces through a pin and slot 300, lever 306 and pin 303 a clockwise displacement of a link 226 about its upper end and consequently so positions a pin 227, Fig. 2, in slot 228 that the rocking of shaft 230 is ineffective to move link 226 and the plate 203. In the second and further rocking of shaft 251 by the total-taking mechanism. however, the cam slot 300 restores the parts and the link 226 again functions and effects the counter actuation. When sub-totals and totals (other than multiple-item totals) are taken, the differential setting of the total lever causes a corresponding positioning of a cam 317 so as to disable the link 226 and thus prevent operation of any of the counters. Specification 237,358 is referred to.