Patent GB-530637-A (GB)
Abstract: 530,637. Cash registers. NATIONAL CASH REGISTER CO., Ltd. (National Cash Register Co.). June 16, 1939, No. 17623. [Class 106 (i)] A cash register or similar accounting machine has at least one totalizer in which there are overflow elements arranged adjacent the highest and the lowest denominational adding elements, and there being means to transfer from the overflow element adjacent the highest denomination to the other overflow element. The invention is illustrated in a cash register of the kind described in Specification 475,185 in which rows of interspersed totalizer wheels are shifted axially for totalizer selection under the control of drum cams. The machine releasing means and their controls, which are only described in the present instance in connection with total-taking, are fully described in Specification 465,479. The keyboard includes four amount key banks 10, two quantity banks 11, 12, a fractions bank 13, clerks' keys 14, commodity bank 15, multiple-item key 16, and main totalizer key 17. Each adding or overflow element has an associated differential and during adding the four amount banks 10 are connected to their differentials and all differentials co-act with their correlated type members. During total-taking, all the adding and overflow elements are connected to their differentials and all differentials to their type members. Each overflow denomination comprises in addition to its main differential an auxiliary differential, the two being only coupled together during total-taking. In this way the two quantity banks 11 and 12 effect quantity-printing during adding operations, but their differentials and type members are used for overflow during total taking. The totalizers are arranged on shafts 23 in three rows, the adding wheels 21 being interspersed in seven denominations and the row being shifted axially to bring the appropriate wheels 21 into line with gears 22 constantly in mesh with intermediate gears 35 associated with respective main differential members 41 which are correlated to respective actuators 80, coupling pawls 82, and setting members 83 which are connected by beams 61 and links 62 to segments 63. The latter are connected by nested tubes 64 to type wheels through internalexternal gearing of known kind. After setting of the members 41 by the amount banks 10 and totalizer selection, the adding wheels of the selected totalizer are engaged with the gears 22 in the manner described in Specification 475,185. Totalizers and transfer means. To the left of the highest amount denomination is an additional differential which, during totaltaking, co-acts with a gear 22 of the totalizer overflow denomination situated furthest to the left, Fig. 7 (not shown). The highest amount wheel 21 transfers on to the corresponding adding wheel 21 of the highest order facing the differential of the left-hand overflow. When the adding wheel of this overflow denomination passes from " 9 " to " 0 " a tens transfer disc 24 connected to the respective wheel 21 effects partial rotation of a segment 25, Fig. 8, loosely arranged on a tens transfer shaft 26. Segment 25 rocks an engaged segment 27 clockwise a corresponding distance. Segment 27 is mounted on a shaft 28 which has secured to it at the other, i.e. right-hand, end an arm 29, Fig. 9, contacted by a spring-actuated arm 30 rigid with a tens-carrying pinion 31 of the first totalizer order from the right. Pinion 31 is fast on the transfer shaft 26 and has a pin 32 engaging a recess in an intermediate gear carrier 33 which is supported by shaft 28 and has attached to its hub the transmission gear 22 of the first totalizer denomination counted from the right. This gear 22 meshes with gear 35, Fig. 5, which meshes with an auxiliary member 41b, described below, of the differential of the quantity bank 12, Fig. 1. With the totalizer engaged, gears 22 and 21 of the right-hand order rock the shaft 28 and arm 29 clockwise, Fig. 9, to give a counterclockwise rotation to arm 30 and pinion 31 so that the first tooth 31a moves into the path of a transfer disc 38 mounted freely on shaft 40 and rotated clockwise a certain angle by an actuating disc 39. Disc 38 rocks pinion 31 farther counterclockwise, pin 32 rocking the carrier 33 counter-clockwise around shaft 28, so that gear 22 revolves on the stationary gear 35 and rotates the engaged right-hand totalizer adding wheel 21 one step. Transfer mechanism is provided from this wheel to the adding wheel 21 of the next higher order. second from the right. Between this second denomination and that next to the left (i.e. the first amount bank) the pin connection 32 is omitted to give the necessary break. Auxiliary differentials. The differentials, Fig. 6, facing the two right-hand totalizer orders, and co-acting with quantity keys 11 and 12 in amount entering, must not transmit their setting to adding wheels 21 of these two orders but must zeroize these adding wheels during total-taking. For this, each of these two denominations has a main differential 41a and an auxiliary differential 41b. The latter has a pin 42 on which is mounted a pawl 43 having a pin 45 which is spring-pulled against a lug on a lever 46 pivoted at 47. Stud 47 also supports a zero stop pawl 48 of said bank. Lever 46 engages a pin 49 on a lever 50 mounted on a shaft 200. During adding, shaft 200 remains in its initial position but during totaltaking is rocked first counter-clockwise, and then clockwise. During adding, parts 50 and 46 are as shown in Fig. 6 and pawl 43 is prevented from clockwise rotation. Each of the two auxiliary differentials also includes a coupling pawl 82, setting member 83 and an actuator 80 connected by link 86 to arm 87 on rod 88. Spring 112 connects the main differential 41a and member 83 and a pin 106 on pawl 82 couples the actuator 80 to the differential 41a. The arms 87 are controlled by the cams 95, 96 to drive the actuators 80. When a quantity key 11 or 12 is depressed, a related detent 51 is raised and a pin 52 on it rocks the zero stop pawl 48 so that its pin 53 releases the main differential 41a, and the latter is rocked by its actuator 80 until the differential is arrested by the stem of the key depressed and the corresponding type wheel is set accordingly. But, since the lug of lever 46 is still in front of pin 45 on pawl 43, the auxiliary differential 41b remains locked and the quantity is not entered into the totalizer. Total-taking. When a total is taken, shaft 200 is rocked by the machine releasing means and the two levers 50 secured to it, one for each quantity bank 11 and 12, rotate the levers 46 clockwise and release the pawls 43 which are rocked clockwise by springs 44. The levers 46 meet pins 54 on the zero stop pawls 48 and rotate the latter clockwise until the pins 53 on them are but of the path of the main differentials 41a for these two denominations. Springs 44 rock the pawls 43 until their lower surfaces bear on a lug 55 secured to eachm ember 41a, thus connecting the main auxiliary differentials 41a and 41b. Upon further machine operation a member 41a carries a member 41b with it to rotate the engaged adding wheel 21 counter-clockwise until a projection of the tens transfer disc 24 engages a tooth of pinion 31 and arrests it at zero. The members 41a and 41b are thus stopped in a position corresponding to the amount on the respective adding wheel, which amount is transmitted to the type wheel by the internal-external gears. These are arranged, Fig. 16 (not shown), so that the digits of the two highest overflow orders just described, which are on the right of the amount banks 10, are printed to the left of the other digits of the total. As the main differential 41a returns it positively engages a pin 56 on the auxiliary differential 41b to return the latter to initial position. Upon the return of the shaft 200, the members 41a and 41b are disengaged and all parts are in the initial position shown in Fig. 6.