Patent GB-1187793-A (GB)
Title: An Accounting or Calculating Machine
Inventor: GUELDNER HARRY
IPC: G06C15/04
Filed: 1967-04-26
Abstract: 1,187,793. An accounting or calculating machine. KOMBINAT ZENTRONIK VEB. 26 April, 1967, No. 19271/67. Heading G4B. An accounting or calculating machine comprises a plurality of groups of registers A, B, C, each group having two registers O, I/II; III/IV, V respectively. One group is shown in Fig. 1, and each register in the group has a set of minus wheels 2 and a set of plus wheels 1. These registers are separately brought into engagement with racks 9 via intermediate wheels 8 when roller 28 is moved to position C, thus causing a pair of arms 20 to move a pair of slides 12 or 13 downwardly as shown to contact pins 10 on pairs of cams 5 or 6. A control lever 18 can move the pairs of slides 12, 13 from a plus position shown to a minus position wherein pins 11 are contacted during downward movement of the slides. The pair of slides moved by the arms 20 and thus the register actuated is determined by axial displacement of arms 20 on shaft 22. When the roller 28 is in position b the wheels 8 engage a register but are out of engagement with the racks 9. The machine includes three item bars (71-73), (Fig. 8, not shown), three total bars (77-79) and three changeover bars (74-76), each bar in each set corresponding to a group and the bars being mounted side-by-side. The machine includes for manual use a keyboard (not shown) comprising a total key, a general reversal or correcting key, a plus key, a minus key, an item key corresponding to each register, and a subtotal key corresponding to each register. The general reversal key when actuated controls the machine to erase the last machine entry. The machine includes levers for sensing a plus or minus total in the registers and for controlling the mechanism of the machine accordingly. Alternatively the machine may be actuated automatically. An item control bar 62 (Fig. 3) and a total control bar 63 common to all the groups are mounted above the bars (71-79) and each carries three pawls 64 associated respectively with the item bars and the total bars. Each pawl 64 has articulated thereto an item sensing or total sensing bar 68, 69 urged against stop pins 84 on the item and total bars by springs. Movement of an item or total bar 68, 69 causes the respective bar to be released from the position shown in Fig. 3 to permit a pawl 64 to contact the roller 28 of the associated group and to perform an operation thereon. During movement of the item or total control bars from the position c to the positions a or b if a control pawl 64 has been released that pawl will return to the withdrawn position by pin 85 engaging ramp 86. Register changeover.-A slide 42 reciprocated during each machine cycle has a step (43), Fig. 4, not shown), adjacent each group, which causes a respective rocker 44 (Fig. 2) to be pushed towards a control plate 51. When the plate is in the position shown for the group A movement of rocker 44 will have no effect, but upon actuation of the item or sub-total key corresponding to the register A1 the associated changeover bar (74) is moved to position the plate with the angled portions 53, 54 behind the rocker and those portions will act as a pivot point for the rocker which will move the arms 20 axially on shaft 22 for co-operation with the pair of slides associated with the pair of cams 5 and thereby effect changeover from register A0 to register A1. Plus item control.-At the end of each machine cycle the item bars (71-73) are held in position Sp by a pin (175) on a lever (174), (Fig. 7, not shown) and are returned to position N at the beginning of the next cycle. However, upon depression of the plus key and an item key the corresponding item bar is arrested in position P at commencement of the machine cycle. Upon movement of the item control bar 62, the corresponding item sensing bar 68 drops with its forked shaped end over combs 80, 81 or rest 82. The associated pawl 64 is pivoted clockwise and its surface 67 engages with roller 28 of that group, and thus brings register AO; BII; or CIV into engagement with wheels 8. Total control.-To find a total in, for example, register AO the appropriate sub-total key is pressed and the associated total bar (77) is displaced into position P. Depressing of the total key causes a stepping on device (131), (Fig. 10, not shown) to move that bar to position M. Item bars (71-73) carry pawls 91 (Fig. 3), and are in position Sp before beginning of machine cycle. With the item bars in this position extensions 94 on pawls 91 mounted on bars (72, 73) bear against angled portions 88, 89 of total bars (78, 79). The pawl 92 on item bar (71) on displacement of bar (77) to M and its detent 93 engages comb 81 and holds item bar (71) in position Sp. Also movement of bar (77) to position M has caused total sensing bar 69 associated therewith to be located to one side of comb 81 and subsequent movement of total control bar 63 will cause pawl 64 to engage roller 28 of group A to extract a total. As bar (71) is in position Sp the arm 70 of the associated lever 68 bears against angled portion 87 of total bar 77, and thus the associated pawl 64 cannot drop. Sub-total control.-For sub-totals, for example, from register BII, the appropriate sub-total key is pressed and the associated total bar (78) is displaced into position P. The associated total sensing bar 69 is pulled away from angle rest 82. Before beginning of machine cycle the item bar (72) is in Sp position and movement of the bar (78) and angled portion 88 causes pawl 91 to drop and the bar (72) is held in Sp position. Pawl 64 on the total control bar 63 associated with group B engages roller 28 and register BII is engaged with the racks 9. Upon movement of the item control bar 62 the forkshaped end of the associated item sensing bar 68 drops and the pawl 64 corresponding to group B on item control bar 62 drops to engage roller 28 of group B when the total control is terminated. As disengagement of register BII does not take place until end of machine cycle the amount extracted from the register is returned thereto during reciprocation of the racks. Minus item control.-Pressing an item key causes one of the item bars (71-73) to be halted at position P and pressing of the minus key causes one of the item bars associated with groups A, B (71, 72) or the changeover bar associated with group C, to be moved to positions M and P respectively. If one of the item bars (71, 72) is moved a lever 179 (Fig. 2) drops into position M in sensing outline 177 and the associated control lever 18 which moves with the lever 179 displaces slides 12 and 13 into the minus position wherein those slides when pushed downwardly engage the pins 11. For group C a minus value arriving for register CIV is introduced into register CV as a plus value. The machine has provision for the total in, for example, register BII to be transferred into register CIV during one machine cycle. A minus total in, for example, register AO may be transferred to register CV as a plus item.