Patent GB-629707-A (GB)
Title: Improvements in or relating to accounting and similar calculating machines
IPC: G06C11/02
Filed: 1947-07-28
Abstract: 629,707. Typewriters &c. NATIONAL CASH REGISTER CO. July 28, 1947, No. 20286. Convention date, Jan. 30, 1941. [Class 100 (iv)] [Also in Group XIX] - An accounting-machine adapted to print on record material comprises a positionable table for the record material, means to cause the table to be fed to an initial line, means automatically to line-feed the table after it has been fed to the initial line, means whereby, in one mode of operation of the machine, the automatic feeding means is controlled to cause the table to be line-fed after each machine operation to make a succession of prints in the same column, and further means whereby, in another mode of machine operation, the automatic feeding means is controlled in such manner as to cause. the table to be line-fed only after a number of prints have been made, each during a separate machine operation, on the same line and in a plurality of different columns. General. The invention is applied to a motor-operated machine of the Shipley type adapted for bank transactions. The machine prints on a sheet 343, Figs. 2 and 48, placed on the positionable table and, in known manner, on a record-strip 906. The sheet is later divided into two parts which respectively form a statement for the customer, and a ledger-sheet for record purposes. Specifications 108,722, [Class 106 (i)]; 443,977, [Group XIX]; 447,481 and 629,762, [Group XIX], are referred to. Statement-sheet table. The table 335, Fig. 19, is formed with apertures through which the printing hammers can operate and with rails 336, 337 which are guided between rollers 338, 339 mounted in frames 62, 63 of the machine. Stop blocks 347 position the statement sheet and pressure blocks 348, 349 are urged by springs against arms 357, 358 on a shaft 352, Fig. 21, carrying an arm 361 which is rocked early in a machine operation by a cam 370 to clamp the sheet and to lift the arm 361 over a shoulder in a plate 372 to enable the table to move rearwardly, during which movement the plate 372 maintains the arm 361 in its clamping position. The table is driven by a shaft 377, Fig. 19, which carries gears 373, 374 engaging holes in the table. The holes are also engaged by gears 378, 379 which are adjustably spring- loaded to urge the table forwardly, the table being retained in a set position by a ratchet 489, Figs. 43 and 46, associated with a pawl 494 and connected through gears 488, 487 and 485 to a gear 403 on the shaft 377. A drum 400 geared to the gear 379 indicates the line to which the table is positioned. Initial-line-selecting differential mechanism. Complementary slides 417, 425, Fig. 25, are positioned by the stem of the depressed units line-selecting key when driven by a pinion 423 mounted in arms 428, 429 rocked by a pitman 436 which is shock-absorbingly connected to a block 434 carried between the arm 429 and an arm 432 and driven by cams 442. Slides 452, 453, Figs. 26, are similarly positioned by the depressed tens key stem. Racks secured to the units slide 417 and the tens slide 452 engage gears 414, 409, Fig. 46, secured respectively to the bevel'wheels 413, 410 of a differential gear, the planet wheel of which is carried by a shaft 402. The ratios of the gears 414, 409, are so chosen that the movement of the shaft 402 is proportional to the number set up on the keys 449, 477. Rendering line-selecting means effective. During a machine operation in which the table is initially in its forward home position, a spring 900, Fig. 39, rocks an arm 515 and an arm 897 secured thereto in a counter-clockwise direction under the control of a cam 902 which cooperates with a link 898 pivoted to the arm 897. An arm 511 is caused to follow the arm 515 by a spring 513 and, through a link 510, lowers a pitman 504 into engagement with a notch in an arm 500 so that, when the pitman is moved to the right by cams 508, a pawl 497 secured to the arm 500 engages a notch in a disc 407 and holds a bevel-wheel 406, Fig. 46, of a differential gear stationary so that the rotation of the shaft 402, on which the planet-wheels are carried, will be transmitted to the other bevel-wheel 404 of the differential gear which is secured on the table-positioning shaft 377. When the table 335 has been moved from its home position, a block 521 secured thereto permits a latch 519 to rock and to engage a stud 518 in the pitman 504 to prevent the latter from engaging in the arm 500. Preventing overdrive of table during lineselection. Depression of an odd units lineselecting key shifts the odd control bar 563, Fig. 30, rearwardly and rocks a yoke 618, Figs. 25 and 42, connected thereto counter-clockwise to free a pawl 620 for movement into engagement with a ratchet 491 under control of an adjustably-mounted cam 628 just as the lineselecting differential mechanism completes its movement. If an even line-selecting units key or a tens line-selecting key only is depressed, the yoke 619 is not rocked and blocks movement of the pawl 620 but permits movement of a pawl 621 into engagement with a ratchet 492 secured to the similar ratchet 491 but displaced relatively thereto by half a tooth. The ratchets 491, 492 are secured to the retaining ratchet 489, Fig. 46, which is geared to the tablepositioning shaft 377. Statement sheet feeler. Early in a machine operation, a spring-loaded cam-controlled lever 533, Fig. 40, urges a plate 530, connected thereto by a link, in a counter-clockwise direction and a rod 529 carried by the plate 530 tends to rock a lever 527 to raise a feeler 525. If no statement sheet is present, the feeler 525 moves upwardly and the rod 529 rocks a segment 517, Fig. 39, secured thereto, into the path of a tail 516 of the arm 511, thereby preventing the engagement of the pitman 504 with the arm 500 so that the drive to the tabletable-positioning shaft remains broken. If a sheet is in position, the movement of the feeler is so small that, when a pawl 541 on a camcontrolled lever 542 is moved away from a fixed stud 545, the pawl engages a shoulder 540 in a plate 539 to return the latter, a link 538, a bellcrank 537, the rod 529 and the feeler 525 at once to their initial positions. Automatic line-spacing. A link 659, Fig. 43, controlled by a cam 662, is urged to the right and then restored during each machine operation. If such movement is permitted, a pawl 656 pivoted on a lever connected to the link 659 steps on by one tooth a ratchet 490 secured to the retaining ratchet 489, which is geared to the table-positioning shaft, so as to line-space the table prior to the actuation of the printing hammers. To ensure proper engagement of the pawls 494, 656 in the ratchets 489, 490, the cam 662 has a raised portion 685 to impart a slight over-feed to the ratchets which are then backed into correct engagement by a further camcontrolled pawl (Fig. 23, not shown) which engages a ratchet adjustably secured to the table-positioning shaft 377. A control disc 666 geared to a shaft 330 positioned by the total control plate (not shown) blocks movement of a stud 664 carried by the link 659 unless the totalcontrol plate is in the add position. A further control disc (not shown), fast on a shaft 315 positioned by the transaction differential mechanism, rocks a pawl 670 to engage a bentover extension 669 of the link 659 and so prevent line-spacing during a " brought forward " or " pick-up " operation. After one of these operations, the first or next available line on the statement sheet is selected by the line-selecting keys, a latch 678, controlled by a stud 681 in the cam 662, engaging the pawl 670 to prevent feed during this next operation, at the end of which the pawl is released. The stud 664 also co-operates with a control disc 728, Fig. 32, which ensures that the table is spaced only after alternate debit-entry operations since these are printed in two columns of the statement sheet, Fig. 2. The disc 728 is secured to a ratchet 730 and, through gears 731 on a shaft 732, to a second ratchet (not shown) having half the number of teeth. A lever 738 embraces a stud 764 mounted for rotation about the shaft 315 and carrying a pawl 763 which steps on the ratchet 730 by one tooth when the lever 738 carrying a stud 744, Fig. 33, is permitted to rock, under control of a cam 742, by a control disc 745 fast on the shaft 315 which is positioned by the transaction differential mechanism. The second ratchet is similarly controlled by a second control disc 762, Fig. 36, also fast on the shaft 315. The first control disc 745 permits operation of the ratchet 730 when debit or debit-correction entries are made so that the control disc 728 alternately permits and prevents operation of the line-spacing means. In all other operations, the second control disc 762 permits operation of the second ratchet and the disc 728 is positioned to permit line-spacing if not otherwise inhibited. Table release. During " pick-up " or " brought forward " operations or during new balance total- or sub-total-taking or transfer operations, a stud 711, Fig. 38, in a lever 712, controlled by cams 716, is engaged in a vertical part of a slot in a pitman 709 so that, on return movement of the lever 712, the pitman 709 rocks a segment 706 which rocks a cam 703 so as to disengage the table-retaining and feed pawls 494 and 656 from their ratchets to release the table. During other operations, a latch 718 is permitted by a control disc 723 on the shaft 315, which is positioned 'by the transaction differential mechanism, to engage below a stud 717 in the pitman 709 and prevent the stud- 711 in the lever 712 from engaging the vertical part of the slot in the pitman and so from moving the pitman rearwardly. A stud 726 in one of the cams 716 lifts the pitman when the lever 712 has been rocked counter-clockwise to enable the latch, if released, to engage beneath the stud 717 so that the stud 711 is maintained in the horizontal part of the slot in the pitman 709. When the table is p