Patent GB-765450-A (GB)
Abstract: 765,450. Cash registers. NATIONAL CASH REGISTER CO. Jan. 31, 1955 [Feb. 25, 1954], No. 11747/56. Divided out of 765,449. Class 106(1) A cash register, having auxiliary and main listing totalizers for items of two different classes, is provided with an automatic total - transfer mechanism common to these two totalizers, whereby a total taken from the auxiliary totalizer is added to the main listing totalizer and a total taken from the main listing totalizer is added to a group totalizer. The invention is applied to a machine for dealing with taxable and non-taxable items. The two classes of items can be entered indiscriminately, the former (taxable groceries) being accumulated separately in the auxiliary listing totalizer. After all the items have been entered, a Taxable Total key 476, Fig. 1, is depressed which initiates an automatic total transfer operation to transfer the value of taxable items to the main listing totalizer, this value also being shown by the machine indicator. The operator then enters the amount of tax due on this value and finally depresses a Cash Total key 477, to transfer the total of all items plus tax from the main listing totalizer and into the group totalizer. The aforesaid three totalizers, together with a Paid Out totalizer, are interspersed on a first line 153, Fig. 10, associated with the Row 1 control keys, Fig. 1. A second line (not shown) associated with the Row 2 item classification keys accumulates totals of the separate classes of items in usual manner. An indicator 515 is operated by the Taxable Grocery key 480, to remind the operator to depress the Taxable Total key 476 and enter tax before operating the Cash Total key 477. Key-blocking mechanism is provided to enforce this sequence. Totalizer selection and automatic totaltransfer. Selection of the four totalizers on the No. 1 line, Fig. 10, is effected by the usual drum cam settable by means of a toothed sector 168, Fig. 6. A pair of segments 485 and 486, Figs. 6 and 3 respectively, having cam notches engageable by studs 483 on the Row 1 keys, control movement of the sector 168 to shift the totalizer line to select the totalizer. The segment 485 actuates the sector 168 directly, through an arm 166 and spring connection 174, and therefore effects totalizer selection immediately upon depression of a key. The segment 486 primarily controls the change of totalizer for the second half of a total-transfer operation. This segment is adapted to shift a link 488 pivoted to the sector 168 to bring alternative control surfaces 492, 494 and 495 opposite a stud 490 on a cyclic operating member 491. Normally the No. 1 or auxiliary listing totalizer is registered with the actuators to accumulate taxable items, the control key 480 for such having no action on the segment 485, and its stud 484, Fig. 3, shifting the segment 486 and link 488 to bring the low surface 495 opposite the stud 490, so that no change occurs later in the cycle. The (non-taxable) Grocery key 475 shifts the segment 485 one step to select the No. 2 or main listing totalizer. The other non-taxable item keys 478, 479, 481 and 482 have no action on either segment; the link 488 remains with its surface 492 opposite the stud 490 and the cyclic operating member 491 is therefore effective to select the No. 2 totalizer for these items. The Taxable Total key 476 also has no action on either segment so that, in a total-transfer operation initiated by this key, the No. 1 totalizer is first cleared and the No. 2 or main listing totalizer then engaged to accumulate the taxable amount. The Cash Total key 477 cams the segment 485 one step to engage the No. 2 totalizer at the outset, and cams the segment 486 two steps to register the high surface 494 opposite the stud 490 so that the No. 3 or group totalizer is engaged later in the total-transfer operation initiated by his key. As a result the total value of all items is cleared from the No. 2 totalizer and added to the No. 3 totalizer. Totalizer engagement in add or total-taking timing is controlled in known manner by means of a cam-notched plate (not shown) actuated by the Row 1 keys and also serving to interlock the two rows of control keys. Indicators. Sequence enforcement. The indicator 515, Figs. 1 and 9, is integral with a slide 519 carried by a key control bar 520 and is moved to indicating position against a spring 522 by depression of the Taxable Grocery key 480, the stud 484 on the key stem camming a finger.525 on the slide upwardly. A latch 527 retains the slide set, and lugs 531 and 532 on the slide then block the Subtotal and Cash Total keys 474 and 476 against operation until after the total-transfer initiated by key 476 has been effected, this operation tripping the latch 527 so that the indicator is reset and the keys 474 and 476 are released.