Patent GB-190715270-A (GB)
Title: Improvements in or relating to Cash Registers and Combined Computing Apparatus with Hand or Weighing Machine Adjustments therefor.
Filed: 1907-07-02
Granted: 1908-07-02
Abstract: 15,270. National Cash Register Co., [National Cash Register Co.]. July 2. Receipts, checking and recording; calculating- apparatus.-A lever-set lever-operated cash-register is provided with a product-computing apparatus for ascertaining the cost of articles at various rates per unit weight, length, or the like ; there is a special set of rate keys for setting the one factor of the product, the other being set in the case of a weight by an attached weighing-apparatus, and in the case of any other quantity by a hand setting-mechanism. The cash-register is of the type described in Specification No. 21,213, A.D. 1903, and, as shown in Fig. 6, has setting-levers 11 adapted to set indicators 25, counter-actuating racks 15, and a special set of clerk's item-indicators 23, the mechanism being subsequently operated by a handle geared to the main operating-gear 85, Fig. 5. The weighing-pan 41, Fig. 3, is balanced by a pendulum weight, and is connected to a shaft 50<a> through a spring and lost-motion arrangement 50, 48 which takes up back-lash ; upon this shaft are the stepped computing-disks 51, which in various combinations represent by their radial dimensions the products of weights up to 25 lb. by rates up to 50 cents, for which purpose the rate keys 55 are arranged in groups of five tens' keys, nine units' keys, and three fractional keys ; in addition to an interlocking bar, which when operated is held by forward movement of the bar 70, these keys operate bars 58 and thereby allow' the corresponding controlling-bars 52 to descend until arrested by their previously positioned disks, each disk having its own controlling-bar. The forward movement of any bar 58 carries with it a pin 73 on the lever 74 and simultaneously by the mechanism shown brings the gear-wheel 87 into engagement with the main operating-gear 85, thereby connecting the computing operating-shaft 96 to the handle, which, as it is rotated, successively restores the controlling- bars belonging to the three banks in descending order by means of cams 99 and yokes 103. The pivoted counter frame 105, upon which are mounted the receiving-pinions 59, 60, 61 for the three denominations and also others for the dollars, is meanwhile so positioned by a cam on shaft 96 that these pinions are always in engagement with the racks upon the controlling-bars during the return of the latter, but immediately afterwards move out of engagement to allow the transfers to be effected, of which there are in some cases two at a time. During the return of the controlling-bars, associated slinkwork re-sets any of the levels 11 that are not at zero, and withdraws the bars 70 to release the keys; but the return of the lever 74 is prevented by means of a flange and pin 151, 152 until the main operating-gear 85 has performed a complete revolution. Before this happens, the main counter shaft 137 is slid longitudinally to bring longitudinal and radial zeroizing pins into engagement, and the counter frame is rocked to bring a pinion on the counter shaft into gear with a segment 140 on the shaft 96 and thereby return all the numeral wheels to zero. As their pinions are at this time in engagement with the segments 131, the computed product is transferred to the rack-bars of the cash register and thus to the setting - levers, clerk's and customer's indicators, and the ordinary counter - actuating parts. If it is required to register the product, the handle of the machine is further operated as for an ordinary cash item, whereupon the main cash register operating shaft 82 is driven as shown in Fig. 5. When the computation does not involve a weight, the shaft carrying the computing-disks is set according to the corresponding factor by means of a setting- arm and graduated circle 191, 192, Fig. 8, the arm being held against a spring return by a ratchet-andpawl engagement which is released upon the return of the controlling rack-bars by a conical-headed rod passing through the slot 198. The manual and weighing arrangements for setting the computing- disks are interlocked by means of a rod within the hollow shaft 50<a> which, as the setting-arm moves from zero, is moved by a cam to press the detached and squared end of this shaft into a hole 210 which it fits, and to allow of this there is a tongue-andgroove connexion between the two parts of the shaft. A general release is provided for the controlling-bars, whereby those for which keys have been depressed descend simultaneously. For this purpose a rod 227, taking under notches 228 upon the bars, is slightly rotated to free the bars upon the initial movement of the shaft 96.