Patent GB-142436-A (GB)
Title: Improvements in printing mechanism for cash registers
IPC: G06C7/06
Filed: 1919-11-03
Abstract: 142,436. National Cash Register Co., (Assignees of Pein, E. J. von). April 28, 1919, [Convention date]. Cash registers; voucher issuing; with iternprinting mechanism.-Comprises improvements in cash registers of the key set and operated type such as are described in Specification 141,012, the type of machine being that described in Specifications 20280/98 and 27802/03. The two totalizers are now adapted to set type to permit printing of a total of a customer's purchases, or of a " grand " total. The zeroizing of the " grand " totalizer is controlled by the total key, and an interlock prevents actuation of either the key coupler or total-printing mechanism. Printing totals and sub-totals.-After printing the items on a customer's voucher, the total is printed on the voucher on a retained record strip 172, Fig. 10, and after a period, such as a day, the " grand " total of all such totals can be printed on the record strip. Two totalizers, a " grand," 49, Fig. 1, on the left, and " recording " or customer's totalizer 50 on the right are provided, which have no indicating-digits but carry stepped scrolls 54, Fig. 6, for setting type through levers 55, sleeves 178, and nested sleeves 199, Fig. 7, on which the total type wheels 203 are mounted. The levers 55 have turned-over ears 56 to engage the scrolls, and normally only those for the right-hand or customer's totalizer are in position to engage their scrolls 54. When u " grand " total is to be taken, the plunger total key 307, Figs. 1 and 6, is operated which slides a shaft 309 carrying an arm 315, Fig. 6, forked to engage a collar 317, Fig. 1, on the outer sleeve, so as to slide the arms 55 for the right-hand totalizer out of engaging position and those of the left hand, " grand," totalizer into position. The sleeves are coupled by tongues 318, Fig. 1, to allow the necessary play. The item type wheels 73, Fig. 10, are set by sleeves 61, Fig. 7, geared to the key bank frames in the usnal way, and the voucher strip is fed forward after each item by a roller 116, Fig. 10, rocked by a pawl from a plate 111 operated by a trunnion 38 of the key coupler, a link 112 from which rocks an inkribbon feed-pawl carrier 109. The item-printing platen 84 is operated from the coupler-driven shaft 32. To print either kind of total, a crank geared to a sleeve 133, Fig. 10, on a shaft 132 is given two turns, thus giving one turn to a pinion 135. This drives a pair of cams 153, 154, Fig. 7, to rock a plate 155 linked to a yoke 194, and spring-connected to a set of levers 186, toothed to gear, by means of the mutilated wheels shown, both with the total type setting sleeves 199 and toothed arms 183 on the sleeves 178. An extension of the plate 155 is pin-and-slot geared to a lever 163 geared to a feed-wheel which advances the voucher. A cam on the shaft 136 operates the record strip platen 253 and the voucher total printing platen 230, which also prints the word " total " from a type block and a business heading from type 235. Alining-pawls 204 for the total wheels are operated from the shaft 136. Zeroizing-mechanism.-After a customer's total is printed, the return of the rocking plate 155 also rocks a toothed lever 228, Fig. 10, which rocks a shaft 185 carrying a gear segment 363, Fig. 7, which drives a disk carrying a pawl 366 so as to operate the zeroizing-shaft 370. This is flexibly coupled by a shaft 371, Fig. 1, which permits rocking of the totalizers, to the zeroizing- shaft 334, Figs. 3 and 5, of the totalizers. Normally, the customer's totalizer on the right alone is in gear, so that after each total, it returns to zero. When a " grand " total, however, is printed, the sliding shaft 309, Fig. 3, which operates the collar 317, Fig. 1, also by means of an arm 319, and collar 320 uncouples the customers, and couples the " grand " totalizer zeroizing-shaft to the actuating-shaft. Interlocking.-To prevent actuation of item keys while a total is being printed, and vice versa, a link 174, Fig. 10, is pivoted to the coupler operated lever 111 and slides on a guide-pin 176 and is adapted to engage a notch 177 in a disk fast to the total crank operated shaft 136, a complete turn of which is ensured by a forked lever 142, 146. co-operating with a stud 141 and stop 144 on the disk. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the indicators for the total and sub-totals described in Specification 150,735. This subject-matter does not appear in the Specification as accepted.