469,034. Calculating-machines. BARON, H. (Astrawerke Akt.-Ges.) Jan. 16, 1936, No. 1493. [Class 106 (i)] A ten-key type calculating- machine has a visible adding and subtracting totalizer, a stepwise movable setting carriage carrying an item indicator and two-armed oscillatable actuating levers setting type carriers and carrying totalizer-actuating racks, the totalizer being mounted above the pivotal axis of the actuating levers. Two machines are described, one for decimal calculations only and one adapted for both decimal and British currency calculations. The depression of a numeral key 7, Fig. 1, acts through a wire 40 to position a stop 31 in a sector 25 pivoted at 24 in a carriage. The key also rocks a universal bail 47 which releases a detent 26 and allows the sector to swing until the set stop engages a bar 23. When the " 9 " key is depressed no stop is positioned and the sector swings until the detent 26 is engaged by a step 32. The key also engages another universal bail which pushes a stop 38 clear of a fixed bar 39 and thus allows the carriage to be pulled one step to the left by a spring. The carriage is restored towards the end of the return (anticlockwise) stroke of the main shaft 108, Fig. 3. A link 129 is, during the initial movement of the main shaft, pulled to the left, a roller 140 on the link falling beneath a plate 141 so that on the return stroke of the link a cam part 132 thereof engages a roller 131 on a lever 125 to rock the lever anticlockwise. Another roller 143 on . the lever 125 thereupon engages a lever 144 to pull to the left a link 146 connected to the carriage-restoring mechanism. The lever 125 carries a bar 124 which restores the sectors 25. The item is entered into the totalizer 66 by differential actuators 54, Fig. 1, pivoted at 55. When the machine is operated, the actuators are released by the movement of a bar 103 and are pulled clockwise by springs 98 attached to levers 101, Fig. 3, rocked by the main shaft, the actuators moving until arrested by the set sectors 25. The totalizer is moved by arms 77 on a shaft 78 into engagement with racks 58 on the actuators 54. The actuators 54 are also pivoted to type bars 56. Displaying decimal items. The sectors 25 carry numerals viewed through a window 53. The means whereby non-decimal items are displayed is described below. Printing mechanism. Controlling printing of zeros. During the machine operation a shaft 112, Fig. 1, is moved to a position 1121 and carries with it levers 111 having hooked ends 117 normally clear of the tails 114 of the printing hammers 110. When an actuator 54 moves, a pin 115 upon it is moved to allow the corresponding lever 111 to engage the hammer 110 which is thus cocked and released. The hammers have extensions which cock all hammers to the right to cause' the printing of zeros. Adding and subtracting mechanism. The totalizer comprises sets of inter-geared pinions 66, 67, Fig. 1, the former being engaged with the racks 58 for addition and the latter for subtraction by means not described. The pinions are geared to numeral wheels 74 viewed. through a window 94. Transfer mechanism. The totalizer actuation occurs during the return movement of the racks 58, Fig. 1. When a transfer occurs, a pawl 72 is depressed and releases a latch 73 from beneath the nose 85 of the next higher rack 58, the rack then being moved relative to the actuator 54 by a spring 86. The racks are restored at the commencement of the next operation, Repeating mechanism. When the repeat key is depressed, a bar (not shown in Fig. 3) is brought beneath the roller 140 on the link 129, the cam part 132 thus being held clear of the roller 131 on the restoring lever 125. Error correction. Cancelling an item set immediately prior to total-taking. If an item is set, the total or sub-total key depressed and the machine operated, the setting carriage is restored at the beginning of the operation so that the item is cancelled and not entered into the totalizer. To effect this, the link 129 is lifted by a bar controlled by the depressed total key so that the hooked end 128 of the link engages a roller 127 on the restoring lever 125 at the commencement of the motion of the link. " 00 " and " 000 " keys. The depression of these keys pushes in two or three stops 38 respectively to allow the stop carriage to jump two or three places to the left. British currency calculations. The machine is modified as shown in Figs. 10, 11 and 17 for calculating in both ordinary decimal and British currency notations. The machine is normally set for the latter and is conditioned for the former by depressing a '' whole number " key. In addition to the ten ordinary keys, Fig. 11, the machine has " tenpence," " elevenpence," " farthing," halfpenny " and " threefarthing keys, " 00 " key and " ú key, which last acts to move the stop carriage three places to the left. The extreme right-hand type bar 194 types symbols, the next 193 farthings, its totalizer wheel being correspondingly graduated, the next 185 and its totalizer wheel are graduated in pence and the two following in units and tens of shillings. The " 2," " 4," " 6 " and " 8 " keys do not set the stops 31 directly but act through intermediate levers 160 ... 163 to which they are connected by projections 164. The " farthing," " halfpenny," " three-farthing and "tenpence " keys are also connected to these intermediate levers by projections 165. Thus the first three of the keys just mentioned set up the " 2," " 4 and " 6 " stops in the stop carriage. The tenpence " key sets the '' 8 " stop and the " elevenpence " key acts like the " 9 " key to release the detent 26. The differential actuator for the pence denomination is in two parts 166, 167, Fig. 10, hinged at 168 and normally held in the relative position shown against the action of a spring 186 by a latch 172 pivoted on the part 167 engaging the foot 171 of the part 166. When the " tenpence " or the " elevenpence " key is depressed the latch is released by a connection 178 and the part 166 rocks anticlockwise relative to the part 167 by an amount representing two units. During the subsequent operation, the " 8 " stop set in the carriage by the " tenpence " key causes a setting of " 10 " in the totalizer and the release of the detent 26 by the " elevenpence " key causes a setting of " 11. " Displaying monetary items. The " tenpence and " elevenpence " keys operate a shutter which moves over the " 8 " and " 9 " which would otherwise be visible in the window 53 and shows instead " 10 " and 11." " Whole number " key. When this is depressed, the stop-pin carriage is moved three steps to the left at the commencement of the next operation, the units of the item thus being entered into the fourth totalizer wheel and the first three wheels being unaffected. The zero printing means for these three places is also disabled. The " whole number " key moves a stop which allows a link 232, Fig. 17, to come into the path of a roller 233 on an operating plate 234, the link thus being depressed to rock an arm 224 at the commencement of the machine operation. The arm 224 has a cam part which rocks a lever 215 clockwise, the lever 215 pushing inwards three carriage stops 38 and engaging a rack 228 on the carriage by means of a projection 229. The arm 224 has also a roller 243 which engages a cam part 244 on a lever 217 and rocks this lever anticlockwise whereby the projection 229 pushes the stop-pin carriage three steps forward. Specifications 265,140, 273,130, [both in Class 106 (i)], and 395,981 are referred to.