Patent GB-486201-A (GB)
Abstract: 486,201. Cash registers. NATIONAL CASH REGISTER CO., Ltd. (National Cash Register Co.) Aug. 31, 1936, No. 23769. [Class 106 (i)] In a cash register, accounting or similar calculating machine having at least one row of interspersed totalizers and wherein items may be entered simultaneously into one or more totalizers of a row, the individual denominational elements of each totalizer are rockably mounted for engagement with actuators and are adapted to be rocked either alone or together with the elements of another totalizer or totalizers of the same row dependent upon the number of totalizers selected. The invention is described as applied to a machine having a grand totalizer and a multiple-item totalizer interspersed in the same row. Each totalizer wheel is mounted on an individual bell-crank rockable to engage the wheel with a differential actuator, the actuators being duplicated in each denomination. The totalizers are selected by a multiple-item key acting in conjunction with operation-control keys, the arrangements being such that with the adding key only depressed, the grand totalizer is selected; with the adding and multiple-item keys depressed, both totalizers are selected ; and with either the total or subtotal key depressed, the multiple-item or grand totalizer is selected according as to whether the multiple-item key is or is not depressed. Grand and multiple-item totalizers. The wheels 16, 16<1>, Figs. 1 and 3, of the grand and multiple-item totalizers are interspersed in a common row, the wheels of each denomination being carried by bell-cranks 18, 18<1> rockable about a shaft 20 to engage either one or both wheels with actuators 15, 15<1>. The actuators of each denomination are carried by transfer levers 12, 12<1> and are permanently in mesh each with one of a pair of wheels 11, 11<1> rigidly connected and driven by a differential gear 10. While disengaged from the actuators, the wheels are aligned by pawls 96, 96<1>, resiliently connected to the bell-cranks but restrained against counterclockwise rocking by a stop bar 98. Transfer mechanism. At transfer, a tooth 75, Fig. 1, on the grand totalizer wheel 16 of lower order rocks a transfer pinion 77 counterclockwise through 45‹. Later in the operation, but prior to the disengagement of the totalizer, a toothed assemblage A, Figs. 1 and 1a, makes a clockwise excursion and in so doing rocks the transfer pinion through a further 90‹ counterclockwise. A pin 79 extends from the transfer pinion into a slot 81. in a lever 82 connected to the transfer lever 12 of next higher order, the arrangement being such that, during the second rocking of the transfer pinion, the actuator of higher order is caused to roll on its associated wheel 11 and add one unit into its totalizer wheel 16. After the disengagement of the totalizer, the assemblage is returned counterclockwise past its normal position to restore the transfer pinion and finally returns clockwise to normal position. The transfer mechanism for the multiple-item totalizer functions in the same manner. Totalizer selection and engagement. One or both totalizers are engaged by rocking a shaft 21, Figs. 1, 3 and 10, fast on which are arms 22 bifurcated to embrace rounded arms of the bell-cranks 18, 18<1>. Totalizer selection is effected by shifting the shaft 21 axially whereby the arms are engaged with either or both sets of bell-cranks. The bell-craiiks of an unselected totalizer are restrained by levers 23, that partake of the axial but not the rocking movements of the shaft 21 and are also bifurcated to embrace the bell-cranks. The axial selecting movement of shaft 21 is effected by a cam 32 positioned by a differential mechanism 33.. 35, of which the bevel wheel 35 is driven by a cam plate in the operation control bank to give the shaft 21 a single step of movement upon the depression of the total or subtotal key, whereas the planetary wheel 34 is driven by the depression of the multiple-item key to give the shaft two steps of movement, the two drives when superimposed resulting in the shaft receiving three steps of movement. Thus with the adding key only depressed, the shaft 21 remains in the position shown in Fig. 3 and the grand totalizer is selected ; with the adding and multiple-item keys depressed, the shaft is shifted two steps to the left and both totalizers are selected ; and with the total or subtotal key depressed, the shaft is shifted either three steps or one step to select the multiple-item or grand totalizer according as to whether the multiple-item key is or is not expressed. The rotational. engaging movement of the shaft 21 is derived from a lever 57, Fig. 10, connected thereto by a link 55, means being provided selectively to couple the lever to bell-cranks 71 .. 73 that are driven by cam grooves 65a .. 67a in accordance with adding, subtotal-taking and total-takings timing, respectively. The coupling means comprise arms 60 .. 62 pivoted to the lever and each pin-and-slot connected to one of the operation - control keys 42 .. 44, so that upon the depression of one of these keys the hooked end of the associated arm takes over a stud on the appropriate bell-crank.