Patent GB-537503-A (GB)
Abstract: 537,503. Cash registers. NATIONAL CASH REGISTER CO. Oct. 19, 1939, No. 28215. Convention date, Nov. 16, 1938. [Class 106 (i)] In a machine having a plurality of groups of storage devices and a totalizer arranged to transmit data to or receive data from any selected storage device, the groups of storage devices are mounted concentrically with respect to differential actuators therefor and there is provided means adapted to select a group of storage devices and means adapted to move said differential actuators longitudinally of the selected group to select one for co-operation with the actuators. General description.-The main differential operating segment 73 free on hub 61 is connected by a link 74 to an A-shaped operating lever 75 pivoting on a fixed stud 76, rollers 77, 78 on the lower ends of the lever co-operating with cams 79, 80 on the main shaft 82. When the main starting bar (not shown) is depressed, the shaft 82 is driven one revolution clockwise when the "total" lever 119, Fig. 23, is in adding position, and two revolutions clockwise when the lever 119 is in resetting position, and is then stopped. In adding, the segment 73 is rocked clockwise and a shoulder 72 carries the latch 69 and actuator 60 together until the nose 66 of bell-crank 67 engages the stem of a depressed key when the latch is disengaged and an extension 83 of link 68 engages a fixed notch 84 to lock the actuator according to the key depressed, the segment 73 completing the movement. Near the end of the clockwise movement a roller 86 engages the arcuate surface 87 on a beam 88 pivoted at 89 to the actuator and forces a recess 95 to engage the hub 59 thus positioning the beam 88 and through a link 97 a segment 98 and also through the links 97, 101 and gears 103, 104, 90, 91, 93 a type wheel 94. A printing hammer (not shown) carries a record strip 140 against the type wheel. On the return of segment 73, the latch which has been riding on the high part of the segment snaps back behind shoulder 72 and a surface 108 engages the stud 109 to return the actuator 60. When a key is depressed, the nose of the reset spider 58 engages the zero stop pawl 56 to release the latch. Totalizers.-The machine has two usual lines Nos. 1, 3 of interspersed totalizers each containing ten sets of wheels, and a No. 2 " balance totalizer controlling ten sets of wheels on each of ten storage lines. In " total " or " sub-total " taking, during the first revolution of shaft 82, the selected totalizer line is shifted laterally to align the wheels with the actuators 60. Near the end of the second cycle, a zero stop throw-out shaft 516 rocks rod 518 against the arm 519 to move the zerc stop pawl 56 out of the path of the spider 58. The initial movement of actuator 60 during the second cycle reversely rotates the selected totalizer to zero and obstructs spider 58 causing it to rock the latch out of engagement with shoulder 72 to arrest the actuators 60 in the differential position. At the end of the clockwise movement in the second cycle, the totalizers are disengaged from the actuators 60. Balance totalizer.-The balance totalizer No. 2 is a connecting link between the main actuators 60 and the ten lines of storage wheels. It contains ten denominational units each comprising a plus wheel 120 and a minus wheel 121 free on a rod 122 carried by a framework 125 shiftable longitudinally to bring the plus or minus wheels into register with the main actuators 60 and forwardly and rearwardly to engage and disengage the auxiliary actuators for the storage devices and the main actuators proper of the machine. The plus and minus wheels 120, 121 are geared together for reverse movement. The actuator drive gear 155 meshes with a gear 157 meshing with a long pinion 159 free on a rod 160 and meshing in turn with an actuator 161 free on bushing 162 which together with driving ratchet 163 is secured to the shaft 164. Two spring pawls (one shown) 165 are mounted on the actuator. There are ten auxiliary actuators, one for each order of the ten groups of interspersed wheels 167, supported by ten lines in a circle and shiftable radially in slots in the frame plates. Balance totalizer engaging mechanism.- After the actuators 60 have been positioned according to keys 46, an engaging spider 189 is rocked clockwise in the well-known manner to shift pitman 183 forwardly, causing projection 181 in co-operation with a stud 180 to rock a crank 179, shaft 178 and arms 176 to shift links 174 down, Fig. 19, causing studs 173 guided by camming slots 172 in cooperation with slots 171 to shift frame 125 forwardly to disengage gear 157 from the long pinion 159 and to engage the wheels 120 or 121 with the actuators 60. Total and sub-total recording.-When the lever 119 is in " add " position, at the beginning of the second cycle, the actuators 60 drive the wheels 120 to zeroize No. 2 totalizer, which on reaching zero position, operates lever mechanism to arrest the spider 58 for that bank in differential position. In sub-totals the totalizer remains in engagement and returns to its previous position. Lateral shift of balance totalizer.-This is done by well-known mechanism under the control of keys 117, 118, the differential devices being similar to that described above, the printing mechanism being positioned by beam and associated link 190. The indicator sector 191 is connected by tube 192 and links to a cam 223 free on stud 224, Fig. 4. A cam groove 225 co-operates with a roller 226 on pin 227 in bracket 228 on the totalizer frame 125. The cam is such that the keys 117, 118 position plus or minus wheels in alignment with the actuators 60. The shifting of totalizer to engage the actuators 60 causes a pin 227 to engage a corresponding hole 231 in the bottom of the cam groove. It is understood that suitable aligning mechanism is used to prevent error in operation where necessary. Storage device selecting mechanism.-The balance totalizer comprises 100 storage devices arranged on ten shafts 168, ten sets of wheels on each shaft. The actuators 161 are shifted laterally in relation to the ten sets of storage wheels. The shifting is controlled by keys 246 and an adjacent row of keys 247 controls the selection of any one line. The rows of keys 246, 247 each has a differential mechanism similar to that for the amount keys 46. Differential operating segments 259 are positioned in the same way according to the value of the key. A link 260 connects segment 259 to an operating lever 261 witb rollers engaging cams 265, 266. A transaction differential beam 271 straddles a stud 272 in a link 273 connected to an aligning sector 274 and the lower end is connected to the printer so that segment 274 and shaft 278 are positioned, that is, the gear segments 284,286 are positioned and these mesh with vertically sliding racks 287, 288 which select one of the ten lines 168 for engagement with actuators 161. Transaction key interlocks.-Mechanism under control of the total lever 119 locks all transaction keys except those corresponding to the position of the total lever. When the latter is moved to No. 2 read, or reset, the keys 116, 117, 118 are locked while keys 246, 247 may be depressed to select various storage sets. A slide 304, Fig. 2, has apertures adapted to co-operate with a projection 305 on arm 297 and is positioned by mechanism connected to the lever 119 to obstruct in a well-known way. Suitable aligning pawls for the sectors are provided. Lateral positioning of auxiliary actuators.- The keys 247 are associated with differential mechanism similar to that described above and this through link 314, segment 315, collar 316 and yoke 317 positions segment 318 gearing with a rack 319 which gears with teeth cut on sleeve 322. Mounted on an extension of the sleeve are diametrically opposed studs 325 engaging cam grooves in a fixed cam 328 causing the shaft 164 and auxiliary actuators 161 to shift laterally. Storage wheel engaging mechanism.-In Fig. 14, one set of storage wheels in No. 10 line is in engagement with actuators 161 from a preceding operation. At the beginning of the next operation, the amount contained in the balance totalizer is entered into the storage wheels 167 and immediately thereafter the cam 398 rocks arm 395, shaft 138 and arms 388, 389. This causes studs co-operating with cam slots in fixed and movable plates to move through linkage the shaft 168 upward in its slot to disengage the totalizer. After this the shaft 164 is moved laterally to select the next totalizer. The shaft 164 is rocked by linkage from a cam groove in cam 405 on shaft 82 the shaft driving the actuators through the ratchet 163 and pawls 165. Specifications 8119/15, 191,346, 199,046 and 227,852, [all in Class 106 (i)], are referred to.