Patent GB-480322-A (GB)
Abstract: 480,322. Calculating -- apparatus. AKTIEBOLAGET EKONOMIREGISTER. Aug. 17, 1936, No. 22653. Convention date, Aug. 29, 1935. [Class 106 (i)] In a machine having a plurality of add and subtract totalizers and settable means for controlling the selection of, and the kind of operation on, the totalizers, means are provided whereby true negative totals, as well as positive totals may be obtained in a single cycle of operation. In accordance with the invention, means is provided to add a " fugitive one " to the subtract wheel of the lowest denomination, the means being controlled by the setting member which controls mechanism to select the totalizers and to determine their mode of operation. The invention is shown applied to a machine of the type described in Specification 464,508. The keyboard has banks of designation analysing keys, total and sub-total keys and numeral keys. The analysing keys and total or sub-total keys, one bank of which is shown in Fig. 2, co-operate with rods 21 operatively connected to shafts 61 with arms 64 connected by links 65 to other bell-cranks 66 ... 71 which are associated with other members to condition the machine in the known manner for selecting a particular totalizer or a combination of totalizers for addition, subtraction, total or sub-total taking purposes. The numeral keys (not shown) have stops or pins that co-operate with projections 29, Fig. 2, on slides 28 that are connected to the differential actuating wheels 45. A key in any one row is held in depressed position by a detent bar 30 which is operated at the end of an operating cycle to free the keys by a mechanism operated by a pawl 77 on a plate 74 carried by the main operating shaft 50. The totalizers are arranged in three sections, the central section with three totalizers I, II and III being shown in Fig. 2. The actuators of the sections are interconnected by a set of shafts 90 and pinions 91. Each totalizer comprises groups of pinions 100, 101, Figs. 8 and 9, rotatably mounted on shafts 102, 103, secured to a bridge member 104 pivoted at one end to arms 105 on a shaft 106 and supported at its other end on arms 138. An intermediate support for the bridge is provided by a bellcrank 114. The arms 105 and supports 114, 138 are controlled by links 112, 115, 140 associated with the bell-cranks 66, 67, and a three-armed lever 143 respectively. By this means the pinions 100 or 101 are selectively engaged with a set of intermediate wheels 170 constantly in mesh with the actuators. Transfer mechanism. The transfer means is applied to the intermediate wheels 170; these wheels comprise two parts 171, 172, Fig. 9, the part 171 being formed with a slot 173 in which engages a pin 174 on the part 172, a spring 175 tending to keep the pin abutting the upper end of the slot. Associated with each wheel is a transfer member 180 in the form of a pivoted bell-crank lever, one arm 181 of which cooperates with a transfer tooth 183 on the add and subtract pinions 100, 101 and the other arm 184 co-operates at its free end with the pin 174. A pin 186 on the arm 184 co-operates with a latch lever 190 having a spring 192 connecting it to an arm of the transfer member 180. Secured to a shaft 195 is a lever 196 and a bell-crank 197 ; the lever 196 co-operates with the member 180 and latch 190 while the bell-crank is connected to a link 207 operatively connected to a. lever 200 on the shaft 142. During an operation, all the actuators are moved, those in denominations in which no key has been depressed move one step, while those in the other denominations move an additional step to the value of the key depressed. This extra step movement is imparted to the parts 171 of the intermediate wheels but not to the parts 172 on account of the pin-and-slot connection. If a transfer is to be effected, the tooth 183 rocks the member 180 and releases the pin 174 of the next higher wheel 170, the member 180 being latched in displaced position by the latch 190 so that an additional step movement is imparted to the totalizer pinions. The parts are restored at the beginning of the next machine operation by the lever 200 rocking the shaft 195 and causing lever to release the latch, and to return pin 174 to the lower part of the slot and the member 180 into engagement therewith. Operating mechanism. The members effecting the timing of the engagement and the kind of calculation are operated by cams 51 and 120 on the main shaft. The cam 51 operates an arm 53 and link 55 to displace a bail 56 so as to permit the actuators to take up their differential positions under the action of springs 48 ; the cam 120 is formed with a projection 121 controlling the rocking of arms secured to the shaft 126 and is further provided with a roller 123 controlling the rocking of the threearmed lever 143 and its latch 148 in the known manner. The upper arm of the lever 143 is controlled by a locking lever 148, the rear end of which is connected to the bell-crank 68. The rearwardly extending arm of the lever 143 is connected by a forked link and spring 155 to a locking arm 154 mounted on the shaft 50 and bearing against the roller 123. The locking arm 154 is held by two other members, viz. : the lever 69 connected to a link 65 and a latch 165 engaging a shoulder on the locking arm and having an arm extending into the path of movement of the projection on the operating cam 120. Total and sub-total taking mechanism. When the amount standing on a totalizer is positive, the total or sub-total can be obtained by depressing the appropriate key to condition the machine for operation in the known manner. If the amount is negative, the machine must be conditioned to take a true negative total. According to this invention, the totalizer is provided with a mechanism for entering the " fugitive 1." As shown applied to totalizer I, the mechanism comprises a pair of arms 210, Figs. 8 and 9, mounted on the arms 105 and connected by a rod 211 movable in a slot of a frame plate 212a. Each denomination is also provided with a pair of arms 213, 214, the arm 213 resting by means of a slot on the rod 211 while the arm 214 is pivoted on a shaft 217 secured to the arms 210. A spring 218 connects the arms. Each arm 213 is formed with two teeth 216 which engage the adding pinions when the totalizer is in its raised position ; the arms 213 have bent ends 220, that of the lowest denomination rests on a projection 226 of the frame while the others rest on projections 221 of the arms 214 of the next lower orders. Each arm 214 also is provided with another projection 227 which underlies the arm of next higher order, and is formed with a depending tongue that co-operates with a single notched disc 222 on the subtract pinions 101. A locking bar 231 on arms secured to a shaft 232x is adapted to co-operate, in its raised position with shoulders 230 on the arms 213 when in their lower position. To the shaft 232x is attached an arm 232 connected by a link 235 to the bell-crank 70. The bell-crank 71 is connected by a link 242 to a lever 241 having a pin 243 adapted to co-operate with the disc 120. The lever 241 is connected by a spring 244 to an arm 246 to which is connected one end of a link 250, the other end of which is attached to a bell-crank 251 operatively connected by a link 252, and arm 253 to a shaft 255 carrying an arm 256 with a bail 257 for restoring the arms 213. When the sub-total key appropriate to totalizer I is depressed, the bell-cranks 66, 68 and 70 will be rocked to release catches 110, 148 and raise the looking bar 231. With the units wheel in any position and any adjacent wheels at " 9," the arms 213 will occupy their lower position so that when the subtract wheels are moved for selective engagement, the arms 213 referred to will be arrested by the bar 231 and the teeth 216 will rotate the corresponding wheels 100 through one tooth to correct the amount standing on the subtract wheels. Immediately the " fugitive one " and consequent transfers, if any, have been entered, the cams on the main shaft operate to put the subtract wheels 101 into engagement with the intermediate wheels 170 and transmit the amount to the differential actuator wheels 45. After the printing operation or transference of the amount to another totalizer, the amount is returned to the totalizer and the parts restored to normal. In total-taking operations the depression of a key operates the bell-cranks 66, 68, 69, 70 and 71 and the machine operates as for a sub-total operation, but the totalizer wheels are withdrawn before the return movement so that the totalizer is reset to zero. To ensure that the subtract wheels 101 are restored to the normal or " 9's " position, the disc 120 during the forward stroke rocks the lever 241, and, through the arm 246 and operative linkage, rocks the arm 256 and bail 257 to displace the arms 213. The arms 213 are thus freed from their supports on the arms 214 and come to rest on the locking bar 231 and finally are locked thereby. On the return stroke, the totalizer is restored to normal and the bar 211 strikes the bottom of the slot in the arms 213 and causes the teeth 216 to rotate one step to their " 9's " position. Utilizing single total key for positive or negative total-taking operations. For this purpose, as shown in Fig. 2 for totalizer I, the disc 222 of the wheel 101 of the highest denomination is formed with a projection 280, Figs. 8 and 11, instead of a recess. The arm 214x of this denomination has a tongue 224 which rests on a pivoted catch 282 so long as the totalizer contains a positive amount. The arm 214x terminates in a bend 281 which passes freely past the upper end of a lever 296 during the displacement of the totalizer when in a positive condition. When an amount is subtracted that is greater than the amount standing in the totalizer, the passage of the highest subtract wheel from " 0 " to " 9 " through the projection 280 strikes the catch 282 and shifts it t