Patent GB-829800-A (GB)
Abstract: 829,800. Cash registers; transfer mechanisms. BEAVIS, E. T. (National Registrier Kassen G.m.b.H.). March 11, 1958 [April 8, 1957], No. 11335/57. Class 106 (1). A cash register, particularly for dealing with multiple item transactions, has a full keyboard and, for each order, a differential member positioned under the control of the depressed key and an item totalizer wheel, the several totalizer wheels and differential members being interspersed on a common shaft and mechanism being provided for coupling each totalizer wheel to the associated differential member. The differential members of the cash register described also position front and rear drum indicators, type wheels and actuators for a further totalizer. Differential mechanism.-On depression of a key, a slide 64, Fig. 1, is cammed upwardly and a stud 66 therein is moved from the path of a zero stop 67 which normally engages a stud 79 in a latch 74, Fig. 2, pivoted on a stud 75 in a differential arm 72 mounted on the main-shaft 73. When the machine release-shaft 63 rocks clockwise, the stop 67 is then able to rock so as to free the latch 74, which moves behind a shoulder 84 of a locking-plate 78 pivoted at 85 on the differential arm 72. A universal rod 87 is then moved round the shaft 73 and, through its engagement in a slot 86 of the locking-plate 78, carries the differential arm 72 with it until a shoulder 89 of the latch 74 engages a stud in the depressed key, whereupon the latch 74 moves to the position shown and enables the locking-plate 78 to rock counter-clockwise and to be disengaged from the rod 87. A stud 81 in the latch 74 engages a notch 82, Fig. 1. During the restoration of the rod 87, it enters the slot in the locking-plate 78 and restores the parts. The differential arm 72 is coupled by an arm 98 and link 96 to indicating drums, by links 93, 94, 95 to an actuator for the further totalizer, by gear teeth 91 to type-wheels, and by teeth 100 and a coupling pinion 104 to an item totalizer wheel 101 mounted on the shaft 73. Controlling coupling of item totalizer.-The coupling pinions 104, which couple the differential arms 72 to the item totalizer wheels 101, are individually mounted on levers 103 normally held in the position shown, in which the coupling pinions are effective, by cams 117 on a shaft 118. The latter may be rocked by a plate 139, Fig. 3, to cause the cams 117 to disengage the pinions 104 which are then engaged by pawls 106. For this purpose, the plate 139 has a slot in which moves a stud 137 by which it may be coupled either to a total lever 141 or an item lever 143. These levers are rocked at different times in the cycle by cams 146, 147 and are so slotted that when the stud 137 is in its upper position, the total lever is effective and when in its lower position, the item lever is effective. In the central position of the stud, as shown, neither of the levers is effective. The stud 137 is controlled by a plate 126 positioned by the camming action of studs in the stems of a Single Item key 50, an Item key 51, and a Total key 52. The Single Item key 50 positions the stud 137 centrally so that the coupling pinions 104 remain effective throughout the cycle. The amount is thus entered and then immediately cancelled. The Item Key 51 lowers the stud 137 and so renders the item lever 143 effective. This allows the coupling pinions 104 to remain engaged during the first part of a cycle and then disengages them so that the amount is added into the item totalizer. The Total Key 52 raises the stud 137 whereupon the total lever 141 is effective to disengage the coupling pinions during the first part of the cycle, and to reengage them prior to the restoring stroke, for the purpose described below. Transfer mechanism (Item totalizer).-At transfer, one of five studs 154, Fig. 2, corresponding to five sets of teeth on the totalizer wheel 101, rocks a pawl 155, 157 so as to move it from a shoulder 161 of a latch plate 160, a nose 163 of which then moves beneath the end of the pawl. Moreover, a restoring plate 164 fast with the latch plate 160 also rocks so as to lower its arm 165 from a stud 115 in a transfer pawl 110 associated with the next higher order and the latter moves downwardly a short distance until a stud 171 contacts a finger 169 of a release-plate 167. In the middle of the cycle, the plates 103 are rocked to disengage the coupling pinions 104 and studs 108 rock the transfer pawls 110 into engagement with the totalizer wheels 101. A shaft 159 carrying operating plates 172 for the transfer mechanism is then rocked counterclockwise by cams and, in each order, a stud 173 in the plate 172 rocks the release plate 167 so as to free the stud 171 and the pawl 110, if previously tripped, for further downward movement to enter the transfer unit. The edges 170 of the fingers 169 of the release plates are staggered so that transfers are effected seriatim, starting with the lowest order. The shaft 159 is then moved back beyond, and finally into, its original position, whereby the parts are restored to the positions shown. Total-taking (Item totalizer).-On depression of the Total key, a spring-loaded linkage is released and rocks a shaft 185, Fig. 1, so that levers 192 raise the zero-stop control slides 64. Thus, in the ensuing operation, the zero stops will be withdrawn. A mainshaft cam restores the linkage during the operation and the linkage, which on release, latched the Total key in depressed position, releases that key. When the shaft 185 first rocks clockwise, Fig. 1, levers 192 and 198 co-operate with rollers 205, 197 to rock a control lever 202, Fig. 4, and a detent lever 195, Fig. 2, so that a roller 199 in the latter moves from an upper notch 200 in the lever 202 into a notch 201. The movement of the lever 202 carries the end 214 of an arm 208 and a by-pass pawl 209 into the path of the transfer studs 154 of the item totalizer wheel 101, as shown in Fig. 5. During the first part of the cycle, the coupling pinions 104 are disengaged and the transfer pawls 111 prevent rotation of the totalizer wheels 101. Then, as the differential arms 72 rotate, the pawls 209 and arms 208 engage the studs 154 at times dependent on the digits registered by the totalizer wheels, and the arms 208 are cammed counterclockwise and rock the associated latches 74 to allow the locking-plates 78 to free the differential arm assemblies from the universal rod 87, and to latch the differential arms in positions representing the total. The coupling pinions 104 are then re-engaged and during the restoration of the differential arms the totalizer wheels are returned to their zero positions. At the same time, the item indicators and type wheels are set.