Patent GB-193406-A (GB)
Abstract: 193,406. National Cash Register Co., (Assignees of Shipley, B. M.). March 11, 1921, [Convention date]. Cash registers with operating- means; voucher-issuing.-In a machine provided with voucherissue controlling mechanism such as is described in Specification 193,850, the movement of the total lever into sub-total or total taking position sets connections so that the main shaft renders the voucher-issuing mechanism ineffective. When the total lever is shifted either way from normal or adding position, a shaft 1229, Fig. 1, is rocked counter-clockwise and through a pin 1226 and bell-crank lever 1228 allows a spring-controlled link 1232 to raise a hook 1234 pivoted to a pitman 1195 adapted to be reciprocated by the main shaft 112. The notch 1210 is thus brought into engagement with a pin 1202 on an axially slidable shaft, and when the pitman next moves to the right this shaft slides the pin wheels 978, 976 to disable the drive for the voucher-preparing and issuing mechanism. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the following: When the total lever is moved to total or sub-total taking position, the main shaft makes two revolutions instead of one, the totalizer-selection is effected by the combined control of the total-lever and the special keyboards, the automatic selection by the shaped plate 536, Fig. 10 (Cancelled), being nullified, the indicating mechanism is disabled and the printing shaft receives only one rotation despite the two rotations of the main shaft. Specification 176,781 is referred to. Printing totals and sub-totals; differential mechanism. - The total lever may be shifted up or down from normal or adding position to one of three positions according as the subtotal or total is to be taken from the clerks', transaction, or department totalizers. This displacement of the lever effects through a cam-slot 327, lever 325, spring 330 and lever 322, a rocking of shaft 1229 to bring into action the device for providing for two rotations of the main shaft 112, this device being identical with that described in Specification 8119/15. The circular portion of the totallever is provided with three differently-shaped slots 1418 controlling selectively the three pivoted arms 1416 slotted to embrace pins 1420 on links 1421. Differential displacement of the total-lever consequently rocks the corresponding arm 1416 and moves its pin 1420 from a notch in a fixed plate 298 into a notch in a rockable plate 1425 connected by its hub 296 with the spider plate 317, Fig. 11 (Cancelled). The subsequent rocking movement of plate 1425 therefore effects through the engaged pin 1420 and link 1421 a rocking of a shaft 193 connected by gearing with an arm 1429, Fig. 6 (Cancelled), bifurcated to embrace a pin 1430 on a link forming part of a toggle and pivoted to an arm 1433 rigid with a pawl 1434 disposed in the plane of the totalizer pinion 370 and its actuating sector 366. The pawl is thus turned to bring its end into the orbit of the long transfer tooth on the pinion to limit the return of this pinion to zero when surrendering its total to the sector. Contact of the transfer tooth with the pawl rocks it, and through arm 1433 and the toggle shifts a lever 1439 to cause a flatted stud 1441 thereon to engage and thus hold a notched plate 390 connected at 392 to the differential latch arm 385. The latch 375 is consequently disconnected and the actuating sector 366 is stopped at the position corresponding with the amount standing on the totalizer wheel. After the printing-wheels have been set in agreement, the various parts resume their normal position, but the timing of the disengagement of the totalizer from the actuating sector is dependent upon whether a total or sub-total is desired, and is controlled by the total lever through the mechanism shown in Fig. 11 (Cancelled). Engagement and disengagement of totalizer, timing. In a total-taking operation, the counterclockwise displacement of the total lever 137 produces through a slot 1481 and pin 1482 a clockwise rotation of lever 1483, Fig. 11 (Cancelled), and consequently through a pin 1488 on a link 1487 a similar movement of a plate 1491 connected by pin and slot with a link 550 adapted subsequently to be moved to and fro by cams 556, 557. The rocking of plate 1491 shifts through a cam slot 1494 a lever 1496 to cause a pin 1498 to engage a notch 1499 in, and so lock, the spider plate 317 pending the engagement with one of the hooks 547 thereof a pin 545 appertaining to the set of totalizers selected. In the subsequent operation, the link 550 first moves to the right and is then lowered due to the descent of pin 1488 in cam slot 1490 as a result of the further rotation of shaft 1229 under the action of the two-rotation mechanism referred to above. The notch 1500 of the link 550 consequently engages a pin 1501 on the spider plate 317, and in the return movement of the link turns the plate clockwise to cause engagement of the selected totalizer with the actuators. After the differential displacement of the latter under the control of the totalizer, the link 550 is again moved to the right to restore the spider plate and disengage the totalizer, the notch 1500 is freed from the pin 1501 by the action of the two-rotation mechanism through shaft 1229, pin 1488, and slot 1490, and the link then moves to the left to its initial position. The restoration of the total lever to adding position will return the lever 1483, and thus through the same pin and slot raise the link 550 to cause a notch 549 therein to seize a pin 548 on the spider-plate, this being the normal means of connection in adding operations for rocking this plate and so producing engagement and disengagement of the totalizers. In a subtotal taking operation, on the other hand, the shape of the slot 1481 in the total-lever 137 is such that no immediate movement of lever 1483 or plate 1491 due to this slot occurs, and therefore link 550 remains connected with the spider plate 317 in its first movement to the right so that the totalizer selected is engaged at the outset. The rocking of shaft 1229 then effects through pin 1488 the clockwise rotation of plate 1491, and thus the lowering of link 550 to disconnect it from the spider plate 317, which then becomes locked by pin 1498 engaging a notch 1502 due to rotation of lever 1496 by cam slot 1494. The next two strokes of the link are idle movement inasmuch as it is free from both pins 548, 1501, and in consequence the totalizer remains engaged throughout a complete cycle in order to surrender and again receive its total. Prior to the last stroke of the link, the shaft 1229 raises the pin 1488, and through plate 1491 again lifts the link into engagement with pin 548, so that in this last stroke the parts are all restored to initial position. Automatic totalizer-selecting mechanism, disabling. In order that the selection of the totalizer may be effected freely from the keyboard without interference by the automatic selecting plate 536, Fig. 10 (Cancelled), the positioning of the total-lever for total-taking causes, through slot 1474 and pin 1475, a clockwise rocking of a lever 517 and through a three-armed plate 515 of other levers 517 so as to place the pins 535 outside the influence of the cam plate 536. Furthermore, the driving connection from the cam 531 on the main shaft 112 to the levers 517 through the notched arm 528 is simultaneously broken by the disengagement of a link 1478 from notch 527 due to the counter-clockwise movement of lever 325 by pin 326 and slot 327. Single operation of printing-mechanism, effecting. In order to prevent operation of the printing parts during the first of the rotations of the main shaft 112 when printing totals or sub-totals, a pawl forming the driving connection between the main shaft and the printing drive is displaced to break this connection by means of a dog placed in its path by the preliminary rotation of shaft 1229. Towards the end of the first rotation of the main shaft, the shaft 1229 is rocked still farther and frees the pawl, which thereupon assumes its normal function and drives the printing mechanism through one cycle. Keyboards. To prevent depression of amount kevs when the machine is set for total-taking, a bail 1448, Fig. 5 (Cancelled), carried by shaft 1229 rocked counter-clockwise by the displacement of the total-lever is placed in front of the ends 1449 of the arms 145 associated with the several amount bank detent-plates, thus preventing movement of these and therefore of the keys. Moreover, in the operation of the machine, the shaft 1229 is rocked still farther counter-clockwise and consequently the bail 1448 by bearing upon the tails of the zero-pawls 151 removes thesefrom the paths of the differential latches to enable the actuating sectors to be controlled by the totalizer. The normal interlock compelling the depression of a transaction key before a clerk's key is disabled by means of a lever 1455, Fig. 10 (Cancelled), controlled by a slot 1450 in the totallever 137 and extending into juxtaposition to a pin on a lever mounted on shaft 88, Fig. 5 (Cancelled). This latter lever normally constitutes the interlock between the two key-banks, but when displaced by the lever 1455 allows the clerk's bank locking-plate free movement. Means to prevent the depression of more than one key in the whole of the special banks when taking a total are provided and comprise a link 1458 pinned to the total-lever and connected through spiral gearing 1460, rack, and pinions with a sliding notched plate, the notches of which co-operate with the legs of the detent arms for the three special banks. The notches are so spaced that one only of these arms is free at a time, and that one depends upon the differential setting of the total-lever. Tablet indicators.-The indicators exposed at the previous operation are