Patent GB-504823-A (GB)
Abstract: 504,823. Accounting - machines. NATIONAL CASH REGISTER CO., Ltd. (National Cash Register Co.) Aug. 30, 1937, No. 23695. [Class 106 (i)] Totalizer selection.-A cash register or similar accounting-machine has a plurality of totalizers supported on a common shaft and a plurality of sets of totalizer selecting-members shiftable in a path parallel to said shaft, each set comprising one selecting member for each denominational order, means being provided to shift one or more sets of selecting members relatively to the totalizers to select a corresponding number thereof. In the main embodiment described, the invention is applied to a machine having a line of interspersed totalizer wheels 10, Fig. 7, selected by internal riders shiftable axially of the totalizers for selection purposes. To enable two totalizers in the line to be selected for simultaneous actuation, the line is now provided with two sets of riders 15, 25, each set being shiftable as a unit independently of the other set to select a totalizer. For this purpose, the set of riders 15 is mounted in annular grooves in set of sleeves 14 movable as a unit with the totalizer shaft 20, while the other set of riders 25 is mounted in annular grooves in a sleeve 21 situated between the shaft 20 and the sleeves. 14 and movable independently thereof. The riders 15 project, in usual manner, through slots in the hubs of denominational setting-numbers 12 co-operating with the usual differential actuators 13. The second set of riders 25 project through the longitudinal slots in the hubs and similar slots in the sleeves 14, both sets of riders engaging internal teeth of selected totalizer wheels unless situated in their idle end positions. The riders 15 are adjustable by a cam drum 31, Fig. 3, under the control of a differential arm 38 of a totalizer-selecting bank, Fig. 1, to select any totalizer from the ninth to the second. The riders 25 are similarly adjustable by a cam drum to select any totalizer from the first to the ninth, the drum being alternatively controlled through epicyclic gearing by a differential arm 49 of the totalizerselecting bank and by a lever 157, Figs. 1 and 14, that is used to select a totalizer in totaltaking and total-transferring operations. Modification. The invention may also be applied to a machine having a line of interspersed totalizers of the externally operated type. Such a totalizer is shown in section in Fig. 7, and comprises totalizer wheels 10 directly mounted o a shaft 168 that is rockably mounted to engage and disengage the wheels with sets of denominational rider pinions 151, 251 adjustable axially of a shaft 167 by frames 14<1>, 21<1>, in a manner similar to that described with reference to the sets of riders 15, 25, Fig. 7. The rider pinions, when. shifted from their idle end positions to select totalizers, mesh with wide pinions 12<1> permanently in mesh with the actuators 13. Keyboard and operation. In addition to the usual amount keys, the machine is provided with a bank of totalizer-selecting keys 80, Fig. 1. In adding operations, one or two keys 80 may be depressed to select a corresponding totalizer or totalizers in the single line of totalizers associated with the bank. In totaltaking operations, no key 80 is depressed, the required totalizer being selected by adjustment of a lever 157. In total-transfer operations, a totalizer selected by the lever 157 is reset and the total taken therefrom is entered into a totalizer selected by a depressed key 80. The usual operation control lever 170, Fig. 14, is provided. Differential mechanism. The differential mechanism for the totalizer-selecting bank, Fig. 1, comprises two independently operative differential arms 38, 49, Figs. 1 and 3, adapted to co-operate with zero stop pawls 57, 65 and the stems of depressed keys. The arm 38 is controlled by a bail 40a that is rocked clockwise, immediately after the adjustment of the amount differentials, to release the arm to the action of a spring 39 and is returned at the end of the operation to restore the arm. A toothed segment, integral with the arm, operates through an idler gear 89 and cam drum 92 to position transfer mechanism in alignment with the selected totalizer. To enable the totalizer riders 15, Fig. 7, to be restored to their idle end positions before transfer takes place, the differential arm actuates the totalizer-selecting cam drum 31 through a toothed sector 34, to which it is connected through a lost-motion device comprising a slot 37 in the arm embracing a pin 36 on the sector. The sector is controlled by a bail (not shown) that frees the sector to the action of a spring 41 immediately after the adjustment of the amount differentials and restores the sector immediately after the restoration of the amount differentials. Similar mechanism is associated with the arm 49 to position the totalizer riders 25 and the transfer mechanism associated therewith. Control of zero stop-pawls. Depression of one of the lower five totalizer-selecting keys 80, Fig. 1, disables the lower zero stop-pawl 57 to permit the differential arm 38 to be positioned thereby. Similarly, depression of one of the upper four keys disables the stop-pawl 65 to release the arm 49. Depression of two keys of either the upper four or lower five disables both stop-pawls and permits both arms to become operative. The control means associated with the lower five keys is shown in Fig. 1, that for the upper four keys being similar. Upon the depression of one of the lower keys, a stud 73 thereon co-operates with one of a series of cam surfaces 72 on a detent 62 to shift the latter upwardly, whereby the lower pawl 57 is rocked to ineffective position by the abutment of a shoulder 61 of the detent with a pin 60 on the pawl. Camming surfaces 75a of member 75, flexibly mounted on the detent, are now aligned with the studs 73 of the undepressed keys, so that, upon the depression of a second lower key, the detent will be shifted upwardly an additional step and the upper pawl 65 will be disabled by a shoulder 74 of the detent abutting a pin 67 of the pawl. Transfer mechanism. As previously described, the machine has a single line of interspersed totalizers of which any two may be simultaneously selected for item-entering by adjusting sets of riders 15, 25, Fig. 7, or rider pinions 15<1>, 25<1>, Fig. 17. It is consequently necessary to provide two sets of transfer mechanism and means to position them in alignment with the selected totalizers. The sets of transfer mechanism are similar, a denominational unit of one set being shown in Fig. 10 in alignment with a selected totalizer wheel 10 of the denomination. The totalizer line is rocked, from the position shown, to engage the denominational setting wheels 12 with the actuators 13 during the restoration of the latter. At transfer, a long tooth 10a on the selected totalizer wheel of lower order wipes past a pawl 107 that is telescopically mounted on a transfer lever 105 and is provided with a slot embracing a bail 108 on the totalizer-supporting arms 16 to cause it to follow the movements of the totalizer line. The transfer lever is thus rocked slightly counterclockwise to interpose its nose 105f in the path of a denominational actuating bail 130. At the end of the machine operation and after the totalizer-selecting riders have been restored to idle position, the totalizer wheels are rocked into engagement with transfer segments 115 controlled by offset, camslotted arms 105d of the transfer levers. The actuating bail is now moved to the right by a cam 133 to rock the transfer lever further counterclockwise whereupon its arm 105d rotates the segment 115 associated with the totalizer wheel of next higher order to enter a unit thereinto. Finally, the actuating bail is moved to the left past its normal position to abut a nose 105g of the transfer lever, which is thus restored. The transfer levers are flexibly retained in their set positions by spring-urged rods 110, one such rod being provided for each denomination of each set of transfer mechanism. To align the sets of transfer mechanism with the selected totalizers, the transfer levers 105 and segments 115 of each set are rotatably and slidably supported on shafts 106, 116, respectively, and are shifted as units longitudinally of the shafts by combs 95 controlled by cam drums set by the differential mechanism of the totalizer-selecting bank in the manner previously described. Taking totals and sub-totals. A total or sub-total is taken in a single cycle of machine operation in which the operation control lever 170, Fig. 14, is suitably adjusted, totalizer selection being effected by a lever 157, Figs. 1 and 14, to enable the selected totalizer to be coupled with the actuators at the beginning of the cycle. Only the set of riders 25, Fig. 7, (or rider pinions 25<1>, Fig. 17, are used iri these operations, the cam drum for adjusting this set being connected to a toothed sector 156 of the totalizer-selecting lever 157 through epicyclic gearing. The set of transfer mechanism associated with the riders 25 is simultaneously adjusted through similar mechanism to enable the transfer pawls 107, Fig. 10, to act as zero stops for the wheels of the selected totalizer. Transferring totals from one totalizer to another in the same line. To transfer a'total from one totalizer to another in the line, the operation control lever 170 is adjusted to '' total-transfer" position, the lever 157 is set to select the totalizer to be reset, and one of the keys 80 is depressed to determine the totalizer to which the total is to be transferred. In the ensuing single cycle operation, the totalizer selected by the lever 157 is reset during the outward excursion of the actuators as in an ordinary total-taking operation. Immediately thereafter, the lever 157 is automatically restored to home position together with the set of riders 25 and their associated tra