Patent GB-1139926-A (GB)
Title: Total taking device for a printing calculating or like machine
IPC: G06C15/06
Filed: 1966-04-01
Abstract: 1,139,926. Calculating machines. ING. C. OLIVETTI & C., S.p.A. 1 April, 1966 [5 April, 1965], No. 14460/66. Heading G4B. A printing calculating machine includes a totalizer having an additional order at the right of the totalizer and means for zeroizing said additional order before the remaining orders of the totalizer whereby a fugitive one may be added to the lowest order of the totalizer, or an amount in the additional order may be cut-off, rounded up if different from zero, or rounded up if five or more. Overdraft; fugitive one mechanism.-The calculating machine includes a totalizer 11 comprising interengaging pinions 12, 13 meshing according to the complement of 9 and selectively engageable with racks 9 under the control of a lever 14 for addition or subtraction. An additional order comprising intermeshing pinions 138, 139, is provided to the right of the totalizer. A tens transfer device comprises a trip lever 17 and toothed sector 18 for each pair of pinions 12, 13. As a pinion passes through its tens position, a long tooth 26 trips the lever 17 to release the sector 18. The latter is rotated counterclockwise by a spring and returned by a bar 27 to effect primary transfer. Secondary transfer is effected by engagement of a long tooth 26 of one order with a long tooth 28 on the sector 18 of the next higher order. Lever 14 engages a cam slot 30 in a slide 31 whereby the slide is moved to the right for addition, as shown in Fig. 1, and to the left for subtraction. A cam slot 36 in the slide controls a lever 38 engaging a fork member 40 through a pin-andslot connection. The forked member has an extension 45 guided in a lug 41 of a member 42 and co-operating with a spring-urged lever 47 contacting a cam 50. Arms 51, 52 at the forward end of member 40, co-operates with a sign-indicating plate 55. The member 42 is movable under the control of a slide 60, located in the path of the sector 18 of the highest order. If the highest order causes transmission of a secondary transfer, sector 18 is rocked clockwise to displace the slide 60 to the right and lower extension 45 into the path of lever 47 whereby the member 40 is moved forwards. If the secondary transfer occurs during an adding cycle, arm 51 moves above the plate 55. If the secondary transfer occurs during a subtracting cycle, i.e. the total becomes negative, arm 51 engages the plate 55 to move it to the dotted line position. The plate 55 may be restored to its former position during an adding cycle only; when the arm 52 engages the plate. Spring- loaded lever 66 follows the plate 55. If a positive total is contained in the totalizer, lever 66 is located as shown in Fig. 1 to hold a projection 72 on lever 69 above a pin 73 on slide 31. If a negative total is contained in the totalizer, lever 66 moves projection 72 in front of pin 73 whereby movement of a total-taking slide 74, moves the slide 31 to the subtraction position. Cam 128 rocks lever 120 to move lever 118 forwards and release lever 82 to the action of spring 116, whereby shoulder 86 on lever 82 is moved beneath lug 88 on lever 91. Cam 94 rocks lever 91 to displace lever 82 downwards. Lever 84 is rocked to displace the rack 146 to the left through link 148. Rack 146 rotates a gear 145 clockwise to move a stop 143 clear of a spring- loaded gear sector 141, Fig. 3. If no change of sign has occurred in the total since the last total-taking operation, the pinion 138 or 139 engaging the sector 144, already abuts stop 140 whereby sector 141 remains stationary holding a lever 151 in position. If a change of sign has occurred, the other pinion 138 or 139 now engages the sector 141 and since the pinions engage according to the complement of 9, the pinion engaging the sector 141 is rotated clockwise by one step. Lever 151 is released and rotated clockwise by spring 150 to bring extension 156 beneath lug 157 on a lever 158, Fig. 4. Cam 166 pivots lever 158 clockwise through links 162, 163 to depress lever 156 and rotate a sector 154 introducing a fugitive one into the lowest order. Rounding off.-In a modification, five additional pairs of pinions 167, 168 are provided at the right-hand side of the totalizer. The latter is movable transversely to bring any number of the pinion pairs 167, 168 into register with the racks 9. Each pair of pinions 167, 168 is provided with a sector 18 only whereby secondary transfers may be effected. The slide 60 is movable with the totalizer, so that it always cooperates with the highest order sector 18. A sector 154 co-operates with the lowest order and to the right of sector 154 are five stops 140, each adapted to arrest the long tooth 26 of pinion pairs 167, 168. A sector 172 co-operates with the highest order pinion pair 167, 168 and sectors 173 co-operate with the remaining four pinion pairs. The sectors 172, 173 are each provided with nine teeth. The sector 172 has a tooth 174 and extension 175 corresponding to four steps of the sector. Lever 151 engages a slide 177 movable between three positions. With the slide 177 in the position shown, the sectors 172, 173 are rocked clockwise when rack 146 is displaced to zeroize pinions 167, 168 against stops 140. Projection 159 on lever 151 is held by pin 176 whereby lever 151 is unaffected by displacement of tooth 174. Projection 156 is held clear of lug 157 whereby the figures contained in the additional orders are cut-off. With the slide 177 in position I, sectors 172, 173 are released to zeroize the pinions 167, 168. If the pinion 167, 168 of the highest order is other than zero the tooth 174 releases the lever 151, which is rocked by spring 150 to engage pin 176. Projection 156 is engaged by lug 157 to rotate sector 154 adding one into the pinion 12 or 13 of the lowest order. With the slide 177 in position II, sectors 172, 173 are released to zeroize the pinions 167, 168. If the pinion 167 or 168 of the highest order is located in a position from 5 to 9, sector 172 is rotated 1-5 steps. Lever 151 rotates to contact extension 175 and locate projection 156 in the path of lug 157, whereby the figure of the lowest order is increased by one. If the pinion is located in a position 1-4, sector 172 rotates 6-9 steps whereby extension 175 releases the lever 151 entirely. The latter rocks to bring recess 181 beneath lug 157 whereby lever 151 and sector 154 are unaffected by lever 58.