Patent GB-381769-A (GB)
Abstract: 381,769. Cash registers. KRUPP AKT.-GES., F., Essen, Germany. Dec. 5, 1931, No. 33770. Convention date, Feb. 20. [Class 106 (i).] In a machine adapted for registering multiitem transactions wherein the total lever is capable of being set to one of three positions only, viz. " Addition," " Grand total," or " Intermediate total," various locking and interlocking devices are provided whereby the correct use of the keys &c. is ensured. Thus, the total lever when adjusted to either totaltaking position prevents the selection of the grand totalizer, whereas according as a clerk's key or a multi-item key is depressed the clerk's totalizer or the multi-item totalizer is selected. To take a total from the grand totalizer or from a clerk's totalizer a removable key must be inserted and depressed in order to release the motor key. The latter is used for all machine operations other than idle or blank operations, and is locked or freed by devices under the control of the other keys. Keyboard. Besides the amount keys 10, Fig. 1, the clerk's keys 11 and the total lever 14, there are provided a motor key 13, a multiitem key 12 (SA), an idle operation key 9, two locks 15, 16 for receiving removable keys, and two release keys 17, 18 for use with these latter keys, to free them after an operation. Machine release in adding operations. The motor key 13 is furnished with a pin 20, Fig. 2, serving to raise a slide 22 to rock a shaft 27 clockwise to release the machine for operation. The shaft is however subject to two locks while the total lever is at " addition," these locks being disabled by depression of amount and clerks' keys. For this purpose an arm 28 is fixed to shaft 27 and carries a radially slidable stop 29 controlled by an arm 38, and adapted to be obstructed bv arms on a shaft 49. When the motor key is depressed an arm 241 fast on this shaft tends to rock counterclockwise and so obstruct the stop 29 to prevent release of the machine. Loose on shaft 49 is another obstructing arm 48 (not shown), under the control of the clerks' keys 11. Co-operating with each bank of amount keys is a slide pivoted to a link having a shoulder to block counterclockwise movement of the shaft 49. Depression of an amount key therefore prevents rocking of the shaft, and the setting of a clerk's key also disables the arm 48 so that the release shaft 27 is free to rock when the motor key is depressed. Machine-release for total-taking. When the total lever is moved to either of its total positions it rocks arm 38 clockwise to place the stop 29 out of effective position, so as to disable the normal amount and clerk's kev control of the motor release. At the same time, through a cam slot 63a, Fig. 5, pitman 65, connections 70, 73, 75 and arm 76, Fig. 6, the shifting of the total lever allows a bar 79, pulled by a spring 77, to descend and obstruct with its lug 80 the pin 20 on the motor key to prevent its operation. This locking action does not occur however in multi-item total-taking for the key Sa being set at this time a pin 81 on the key stem, by obstructing a shoulder 82, prevents the descent of the bar 79 and so keeps the motor key free. Machine-release for taking clerks' totals. The total on a clerk's totalizer can only be taken by the use of a removable key 83, Fig. 10, adapted to be inserted in a lock 15 the shank 85 of which has a pin 86 to engage a sloping surface 87, Fig. 6, and thus force upwards again the locking-bar 79 to free the motor key. Machine-release for taking grand totals. A similar removable key 88, Fig. 6, is also provided with a pin 90 to raise the locking-bar 79, Moreover, this pin by operating on a detent bar 91, Fig. 2, rocks a yoke 95 clockwise to block a lug on the stoparm 48 to remove the clerks' key control over the machine-release. Grand totalizer-coupling control. Mounted on the motor key frame, Fig. 5, is a slide-bar 99 carrying two spring-connected pawls 100, 101 adapted to be rocked by the pins 19, 20 on the motor key and to depress one or other of two blank keys 105, 106, the pins 103, 104 of which are in or out of recesses in the pawls according to the position of the slide-bar. With the parts set for addition, as shown in Fig. 5, depression of the motor key causes depression also of the blank key 106 and this in turn effects the coupling of the grand totalizer. When the total lever is shifted to " total or " sub-total " the slide-bar moves downwards under the control of the slot 63a and connections, so that the pawl 100 embraces the pin 103 and the blank key 105 is consequently depressed and prevents the coupling of the grand totalizer. If, however, the key 88 is used the pin 90 bearing against the surface 107 restores the slide-bar 99 to permit the coupling. Interlocks between the clerks' keys, the multi-item key, the grand total key, and the clerks' total key. The yoke 95, Fig. 2, rocked clockwise, as stated above, by depression of the proprietor's key 88, enters the path of a lug to lock the clerks' keybank. Similarly if a clerk's key is set the yoke cannot be rocked and therefore the key 88 cannot be depressed. A pin 81, Fig. 10, on the multi-item key Sa when set lowers a bar 110 connected to a link 112 provided with a shoulder 114. Simultaneous use of the key Sa and the grand total key 88 is therefore impossible. To prevent simultaneous depression of the keys 83, 88 a similar shouldered link 116 co-operates with the voke 95 and is under the control of detent bar 118 operated by key 83. A lever 121 is also provided to co-operate with the keys Sa and 83 so as to prevent their use in combination. Key release. The usual detent bars 131, Fig. 11, for the amount keys are provided with slotted links 130 straddling pins 155 on arms 154 fixed to the release shaft 27. When the motor key is depressed to rock this shaft the pins 155 rise to the upper ends of the slots to lock the amount keys. Towards the end of the operation the main shaft 30 rocks the keyrelease shaft 127 and thus through arms 128 lowers the detent bars to release the keys. Similar provision is made for the clerks' keys 11, Fig. 12, an arm 132 fast on the shaft 127 serving to depress the detent bar 144 by means of a pin 133 on a floating link 134 coupled with a loose arm 138 sleeve-connected to an arm 140, Fig. 10, linked to the slide-bar 110. Normally the pin 133 is in the path of the arm 132 so that the clerks' keys are released at the end of the operation, but if key Sa has been set the slide-bar 110 swings the link 134 counterclockwise, Fig. 12, so that the arm 132 is unable to act on the pin 133 and the clerks' key remains depressed. Key Sa is itself released at the multi-item total-taking operation by the rocking of shaft 92, Fig. 10, effected as in Specification 353,662, detent bar 118 being displaced by the link 116 and arm 145. An interlock at 146a, 149 prevents depression of key Sa after the motor key has been pressed down, and also delays the release of the key Sa and slide-bar 110 after the detent bar 118 has been operated, and until the release shaft 27 returns. The detent-bar 118 can be operated by a key 17, Fig. 10, to release the key 83, but depression of the key 17 is otherwise prevented by a shoulder 150a removed only by the key 83. A similar provision is made in the motor-key bank, the release key 18, Fig. 2, being operative only when the key 88 has been depressed. Coupling of clerks' totalizers. The total lever is locked in each of its three settings during the machine operation by an arm on the release shaft engaging one of three radial slots in a disc geared with the lever. When the lever is moved from the adding position, gearing of the Geneva type transmits the motion to a bevel pinion 163, Fig. 15, forming part of a differential gear. The other pinion 168 of this gear is connected with the differential mechanism 165 positioned under the control of key Sa. The planet pinion 170 is on an arm fixed to shaft 164 adapted through a cam drum 171 and roller 172 to position axially a pinion 175 meshing with a gear 177. If the total lever is moved to total taking the cam drum does not turn sufficiently to shift the roller 172 and pinion 175. If the lever is at adding and key Sa depressed, again the roller is not moved, and in both cases the machine drive acting through pinion 175 rotates shaft 178 to couple up the clerk's totalizer. If the total lever is at total taking, and key Sa depressed the drum 171 receives a double movement and pinion 175 passes beyond gear 177 which is then locked by a disc 176a so that no clerk's totalizer is coupled up. Counting number of total-taking operations. The number of zeroizings of the clerks' and grand totalizers is registered on a counter 180, Fig. 16, operated by a link 184 from a pin 188 carried from a shaft 187 axiallv slidable to render the pin effective and ineffective by connection with the total lever. The main shaft 30 reciprocates a pitman 191 once per revolution and if the arm 189 of the shaft 187 lies in the plane of the pitman, that is, in a total-taking operation, the counter is advanced. If, however, the total taken is a multi-item one the consequent rocking of shaft 92 withdraws the pitman from effective position to that shown in chain lines and no movement of the counter takes place. If the total lever is shifted to the sub-total position the shaft 187 is displaced to such an extent as to place the arm 189 beyond the plane of the pitman so as again to break the drive to the counter. The link 184 and the pitman 191 are so formed as to prevent fraudulent actuation of the counter. Sub-total taking. The motor key is locked when the total lever is moved to the sub-total (or reading) position by means of a slide 203, Fig. 7, controlled by a spring 204 and by a pin 205, lever 202 and connections with the lever 14, the slide having a lug 206 to block pin 19 on the motor key. If now one of the removable keys 83, 88 is inserted and depressed its pin 86, 90 be