Patent GB-497441-A (GB)
Abstract: 497,441. Calculating-machines. MATHYS, A. W. (Monroe Calculating Machine Co.) June 29, 1937, No. 18099. [Class 106 (i)] A calculating - machine having a totalizer shiftable relative to the differential actuators is provided with digit-entering means adapted to set in the differential actuators the decimal equivalents of non-decimal values and with means in the totalizer for converting accumulated decimal values into equivalent non- decimal amounts. Setting decimal equivalents of Sterling amounts. The invention is shown applied to a Monroe machine in which the depression of a key causes the rocking of one' or both of a pair of bails 19, Fig. 11, the bails controlling a two-part pinion 5, the part controlled by the left-hand bail of a pair having five teeth of equal length and the pinion part controlled by the right-hand bail having four stepped teeth. Lugs 34 on the bails are engaged by cam-shaped bars 36 on the ends of the key stems, the lugs on a right-hand bail being of different lengths to set from 1 to 4 teeth of the right-hand part of the pinions into active position, the lugs on a left-hand bail moving the left-hand pinion part to set five teeth into active position. In the tensof-shillings column A the units key only is operative to set the left-hand bail to À5. The bars 36 of the units-of-shillings keys B extend into column A and the pence keys control columns B and C and a further pair of bars to the right of C, the connections being arranged to set the decimal equivalents of the set Sterling amounts as described in Specification 335,213, [Class 106 (i)]. Setting machine for decimal use only. This is done by pulling a finger lever to the other end of its slot whereby the bails of columns A, B and C and of the column to the right of C are moved forward so that the decimalequivalent lugs move away from the key-stem bars 36 and decimal lugs come into active position. Setting recurring decimals. The decimal equivalents of the pence values contain recurring 3 when the right-hand bail is setting 3 and recurring 6 when the right-hand bail is setting 1, as shown in Fig. 11. The totalizer is extended a number of places to the right and each place is provided with a differential actuator 72 axially slidable to bring either six or three teeth into operative position. These actuators are mounted on a common sleeve 71 secured to the part 73 of the pinion controlled by the right-hand bail so that, when this pinion is moved to set 1, the actuators 72 set 6 and when the pinion is moved to set 3 the actuators 72 set 3. Transfer mechanism. Since the maximum registration in the additional right-hand denominations is 6, the helically-arranged transfer teeth on the transfer-operating shaft can be set to operate in these additional denominations while normal registration is still proceeding in other denominations. Converting decimal equivalents into Sterling amounts. A numeral wheel 51, Fig. 4, is geared to the decimal numeral wheel A of the first decimal place of the totalizer and a numeral wheel 56 is geared to the numeral wheel C of the third decimal place. Wheel 51 is marked in shillings and wheel 56 in pence, the peripheries of the wheels being shown developed in Figs. 5 and 7. Shutters 53, 57, attached to a common sleeve 60 driven by the decimal numeral wheel B of the second place of decimals co-operate with the Sterling numeral wheels, the shutters having apertures as shown in the developments in Figs. 6 and 8. The shutters and wheels so interact that the Sterling numeral wheels show the approximate Sterling equivalents of the amounts on the decimal wheels. Multiplier register. A device similar to that described in the preceding paragraph is controlled by the decimal wheels of the multiplier register to indicate the Sterling equivalent of the amount standing on these wheels. A Sterling amount can then be used as a multiplier if desired. Specifications 352,731 and 497,462 also are referred to.