Patent GB-651626-A (GB)
Abstract: 651,626. Cash registers; transfer mechanism; zeroizing mechanism. NATIONAL CASH REGISTER CO. Oct. 15, 1948, No. 26822. Convention date, Aug. 25. [Class 106(i)] [Also in Group XVI] In an accounting machine including a web-feeding mechanism comprising pressure rollers which cooperate with the web adjacent to its edges and with feed rollers, and a separate support for each pressure roller, which supports are spring- urged to hold the pressure rollers in effective positions, the supports for a pair of pressure rollers are loosely connected by a connecting member so as to permit relative movement therebetween, and there is provided a spring which actuates the connecting member to move the pressure rollers to effective positions: Amount differential mechanisms. A differential setting lever 70, Fig. 2, for each denomination carries a toothed segment 72 engaged by a stud in a sprung arm 74 to locate the lever in its set position. An arm 97  is held against a stud 96 in the lever by a spring 104 and is connected to a segment 99 by a link 98. The segments 99 are carried on a rod 100 in a frame 101, rockable on a shaft 103 and controlled by cams 110 on the main shaft 37 to engage the segments at the beginning of an operation with pinions 105 geared with pinions 107, coupled, as described below, to totalizer wheels. Cams 112 then engage studs 113 in the links 98 to restore the segments to their zero positions and enter the set amount into the totalizer. The segments are then disengaged and returned to their set positions. Teeth 85 on the setting levers mesh with gears 86 connected by nested sleeves with gears 88, Fig. 7, in mesh with upper and lower type wheels 90, 91 for the voucher and record strip respectively. Transaction differential mechanism. Non- add. A setting-lever 200, Fig. 7, having four positions of adjustment, sets type wheels in the same manner as the amount levers 70. When the lever 200 is in either of its lower two positions, a shaft 203, Fig. 2, rocked thereby, carries segments 204 into the paths of plates 205 integral with the arms 97 so as to prevent movement of the totalizer-engaging segments 99. Clerk's lever. A setting-lever 117, Fig. 18, has four positions, one for each clerk, and sets type wheels in the same manner as the amount levers 70 through a gear 131 on a sleeve 133. A disc 265, secured to the lever 117, has a slot 267 and co-operates with studs 212 in the clerks' starting keys (see below) to allow depression of the key corresponding with the position of the lever 117 only. Indicators. Front and rear indicator drums 80, Fig. 2, coupled by nested sleeves are geared to segments 78 connected by links 77 to the amount, transaction and clerks' setting levers. Shields 286, 288, see also Fig. 7, marked " Registered " are normally visible. However when an amount setting lever is moved, its detent arm 74 rocks a yoke 269 having an arm 272 which is thus moved from a flange 273 on a pitman 274. A spring 275 then moves indicators 284, to which the pitman is pivoted and which are marked "Not Registered," to visible positions. Near the end of an operation, a stud (not shown) in the cam 110 rocks a lever 279 so that a stud 278 in its end restores the pitman 274. A bell 378, Fig. 4, is struck at the beginning of each operation by a sprung hammer 380 controlled by a stud 383 in a gear 241 on the main shaft 37. Totalizers. Four interspersed totalizers correspond respectively with the four clerks. The wheels 119, Fig. 9, of each denomination are rotatable on a sleeve 118 fast to a pinion 107, which is actuated as described above, and are held between plates 120. The plates 120 are carried by shafts which, for easy removal, are mounted at one end in bearings and at the other end in slidable collars held by clips (not shown). The sleeve 133, Fig. 18, rotated by the clerk's setting lever 117 carries a drum 132 having a cam slot engaged by a roller 135 on a slide 136. The latter is moved laterally of the machine by the setting movement of the lever 117 and carries with it a frame comprising a plate 140 and shafts 124, 146 and 114. The shaft 114 supports the totalizer sleeves 118 and carries, in grooves 115, members 128, Fig. 8, which engage in internal teeth of the totalizer wheels 119 and thus, when the shaft 114 is moved axially, couple the selected totalizer wheels with their associated pinions 107. Each totalizer wheel meshes with a gear 145 on the shaft 146 and those gears 145 corresponding with totalizer wheels which are not selected are locked by the shaft 124 which has notches 147  to free the selected wheels. A shield 345 carried by the shaft 124 has windows 346 through which the selected wheels may be viewed. Displaying subtotals. The selected totalizer wheels 119, Fig. 14, are normally obscured by a shield 314 which may be moved by rotation of the machine lock (see below). Zeroizing totalizers. After operation of the machine lock, a key may be inserted into the machine and clutched to a shaft 320,. Fig. 9, carrying a gear 347 meshing with a gear 348 fast on the shaft 146 and with a gear 354 carry - ing a plate 355. The gear 347, Fig. 8, is first moved slightly counter-clockwise to free a sprung pawl 357 from a stud 356 in the plate 355. The gear 347 is then rotated clockwise to rotate the plate 355 counter-clockwise so that a cam surface 366 thereon rocks a pawl 360 clockwise so that it engages a flange 365 of the pawl 357 and returns the latter into the path of the stud 356. The gears 354, 347 and 348 are thus stopped after one revolution, during which, notches 349 in the shaft 146 have picked up pawls 350 mounted in the gears 145 and have restored those gears corresponding with the selected totalizer wheels and the latter to their zero positions. The transfer pawls are held inoperative by the operation of the machine lock (see below). If the clerk's setting lever 117, Fig. 18, is not in a definite position, a notched segment 370 rocked thereby will prevent the blocking lever 374 for the zeroizing key (see below) from completing its movement to its ineflective position. Transfer mechanism. A latch 176, Fig. 2, is rocked, when any totalizer wheel of the corresponding denomination passes to the zero position, by a stud 175 in the wheel. A pawl 177 carried by a lever 183 is released by the rocking of the latch and, when the lever 183 is rocked clockwise by the corresponding one of a set of cams 181, the pawl advances a ratchet 174, fast to the pinion 107 of the next higher denomination, by one step. During this movement, the pawl is cammed outwardly bv the ratchet to release the latch 176. The cams 181 are fast on the shaft 103, which is rotated counter-clockwise through gearing from the main shaft 37, and are helically arranged so that transfers take place successively from the lowest denomination to the highest. Machine lock. A key 292, Fig. 4, is insertable into a lock, in the side of the machine, which lock can be turned to three positions. In the central position, the machine is freed for the normal item-entering operations. In the counter-clockwise position, a stud 293, Fig. 14, rocks a lever 295 so that a stud 297 therein engages a shoulder on a lever 224 which must be rocked counter-clockwise to start the machine (see below). The machine is thus locked against any operation. In the clockwise position of the lock, the stud 293 again rocks the lever 295 to prevent starting of the machine, but also rocks a lever 301 having an arcuate slot for the stud 293. The lever 301 rocks a lever 305, free on the shaft 103, through a link 303. An arm 334, also free on the shaft 103, is connected to rock with the lever 305 and is connected by a link 333 to a lever 332 which moves a slide 330 so that projections 329 thereof no longer block rotation of shafts 326 of clerks' operation counters which may then be zeroized (see below). The lever 305 is also connected by a link 307 and an arm 308 with a shaft 309 on which a bail 312 is secured. The bail 312 is caused to hold the transfer pawls inoperative so that the totalizers may be zeroized. An arm of the bail 312 is coupled by a link 313 with the totalizer shield 314 in order to allow the totalizers to be read. In moving to its clockwise position, the stud 293 also rocks an arm 319, Fig. 4, connected by a link 318 to a plate 317 having a cam slot for a stud in a lever 374, which normally blocks the insertion of a zeroizing key on to the shaft 320. A spring is thus able to rock this lever clockwise from its blocking position. At the same time, an additional blocking plate 322, partly shown in Fig. 14, is moved by a link 321 pivoted to an arm on the shaft 309. Driving mechanism. Each clerk has a key 210, Fig. 4, insertable into a lock cylinder 211 which may be depressed when the clerk's lever (see above) is set to the corresponding position. On depression of a lock cylinder, a stud 212 therein rocks a segment 214, having cam slots for the studs 212, clockwise and an arm 217, coupled therewith and fast on a shaft 218, counter-clockwise. A flange 222 on an arm 221 is thus withdrawn from a projection on a lever 224 which is rocked by a spring 226 to rock a shaft 230 coupled to the lever. An arm 231 on the shaft 230 closes a switch (not shown) in the motor circuit and an arm 57 is withdrawn from a pawl of a one-revolution clutch (Fig. 6, not shown) to couple the motor through reduction gearing to the main shaft 37. At the end of the cycle, a stud 240 in the gear 241 on the shaft 37 engages a nose 242 of the lever 224 to restore it. The arm 221, segment 214 and thereby the depressed key 210 are restored by a spring 239 acting on a rod 220 carried by arms fast on the shaft 218. The rod 220 engages the arms 74, Fig. 2, associated with the setting levers to lock them during a machine operation. If a key is held depressed, a pawl 246, Fig. 4, on the lever 224 engages above the flange 222 when the lever 224 is restored at the end of one cycle and holds the le