Patent GB-508141-A (GB)
Abstract: 508,141. Calculating-machines. MERCEDES BUROMASCHINEN - WERKE AKT.- GES. July 5, 1938, No. 19863. Convention date, July 15, 1937. [Class 106 (i)] In a calculating-machine having means for taking totals automatically denomination by denomination from line and column totalizers, the line-totalizer total key and the columntotalizer total key both operate a common member which connects the total-taking means to a source of power, both keys being held depressed by means released by a second common member, preferably carriage-operated, the two common members being independent of the drive-connecting and the key-holding members associated with the numeral keys. General operation. The first embodiment described has six column totalizers numbered 2 ... 7, Fig. 2, and two line totalizers numbered 12 and 13. The numeral wheels in line totalizer 13 are numbered in the reverse direction to those in line totalizer 12. The line totalizers 12, 13 are actuated by master wheels 35, 36, Fig. 9, which in this embodiment are permanently coupled to each other and to a shaft 34. The column totalizers are actuated by a master wheel 38, Fig. 7. The machine is used to prepare the statement illustrated in Fig. 16. Amounts entered in columns I and III are added into column totalizers 2 and 4 respectively and added into line totalizer 12 (and thus subtracted from line totalizer 13 because of the reversed numbering thereof) while amounts entered in columns II and IV are added in column totalizers 3 and 5 respectively and subtracted from line totalizer 12 (and thus added to line totalizer 13). Addition and subtraction in the line totalizers are controlled by hand-set cams on the column totalizers. Addition, subtraction and no-entry in the column totalizers are controlled by a handset knob 48, Fig. 2, which turns a plate 117, Fig. 7, having a pin 119 engaging a slide 120 operating to reverse gearing 127 between the differential-actuating shaft 50 and the shaft 37 carrying the column-totalizer master wheel 38. In the second embodiment, the line totalizers 12a, 13a are identical adding totalizers and amounts added into column totalizers 2 and 4 are added into line totalizer 12a, while amounts added into column totalizers 3 and 5 are added into line totalizer 13a. To this end cams on the column totalizers operate a bellcrank 44, Fig. 9, connected to a clutch member 45 which clutches either the master wheel 35 for the line totalizer 12a or the master wheel 36 for the line totalizer 13a to the actuating shaft 34. Total-taking from line totalizers. First embodiment. The line totalizers are inspected to determine which is carrying positive total. If, this be line totalizer 12, then column totalizer 6 (which is otherwise an " idle " totalizer) is brought to a position in which a hand-set cam, previously set to a subtraction setting, rocks a bellcrank 43, Fig. 7, having a pin 62 which moves to the left a link 64 to set reversing gearing 74 between the differential-actuating shaft 50 and line-totalizer driving shaft 34. The totalizers 6, 12 and 13 are tabulated until the denomination corresponding to the highest digit of the total in the totalizer 12 comes into the calculating position. The bellcrank 43 is also connected through a link 77 to a selecting slide 86 and rocks this slide clockwise about a pivot 90 to place its end 93 beneath the tail 100, Fig. 8, of a bellcrank 95 connected to a slide 189 controlling the zero stop 203 for the line totalizer 12. A linetotalizer total key 23,. 136, Fig. 10 is then depressed and is latched as described below. The end 144 of this key lifts the slide 86 to rock the bellcrank 100, Fig. 8, to move the slide 189 to the right so that an inclined part 211 operates the lever 196 carrying the zero stop 203 and moves this stop nearer to wheels 125 on the line totalizer 12, these wheels having teeth which contact with the zero stop to arrest the totalizer wheels jn the zero position. The line-totalizer total key 13G also rocks clockwise a lever 166 connected to a lever 171 having an end 173 which rocks clockwise a'common lever 175 to release a clutch 178 which thereupon couples a cam 502, Fig. 13, to a continuously-rotating shaft. The cam 502 allows a releasing slide 506 to descend. A projection 510 on the slide 506 rocks a lever 512 on a shaft 115 connected to a shaft 204, Fig. 8, to rock this shaft anticlockwise to move to the left a link 207 having an inclined part 210 which lifts the slide 189 to complete. the movement of the zero stop 203 into the path of the zero stop wheels 125. The lever 512, Fig. 13, has a pin 518 which rocks an arm 519 connected to forks 522 which slide a pinion 525 on the shaft 50 into engagement with teeth 532 on a zeroizing slide 531. This zeroizing slide is then released by a catch operated by the releasing slide 506 and descends under the action of a driving rack 538 and gearing 539, 541, 542, the pinion 525 driving the shaft 50, gearing 74, Fig. 7 and line totalizers 12, 13 until the zero stop wheel 12 of the operative denomination of the line totalizer 12 engages the zero stop 203. The rack 538 is thus moved in accordance with the amount in the said denomination and controls printing means, not shown, to print the total in column V, Fig. 16. If the positive total is in the line totalizer 13, the '' idle '' totalizer 7 is brought to the calculating position. The control cam on this totalizer is so set (for addition) that. it does not depress the bellcrank 43, Fig. 7. The gearing 74 is thus not reversed and, when the line-totalizer total key 23, 136 is depressed the line totalizers 12, 13 are turned to zero in the reverse direction to that described above, the total being printed in column VI, Fig. 16. The selector slide 86, Figs. 8, 10, raised by the key 136 has also not been affected by the bellcrank 43 and the slide consequently engages another bellcrank L to bring another zero stop 232 towards a zero stop wheel 125 of the line totalizer 13, the zero stop for the line totalizer 12 remaining inactive. Total taking from line totalizers. Second embodiment. In this form, a total is taken from line totalizer 12a and transmitted to a column totalizer 6a and a different total is later taken from line totalizer 13a and transmitted to a column totalizer 7a. In the former case, the column totalizer 6a is brought to the calculating zone and a cam thereon rocks the bellcrank 43, Fig. 7, to set the gearing 74 to drive the line totalizer actuating shaft 34 in subtractive direction. The master wheel 35 remains engaged with the shaft 34 and when the key 136, Fig. 10, is depressed the total is taken as described above. The total is similarly taken from the line totalizer 13a and transmitted to the column totalizer 7a after the latter has been brought to the calculating position and the key 136 depressed. A cam on the column totalizer 7a rocks the bellcrank 44, Fig. 9, to couple the master wheel 36 for line totalizer 13a to the actuating shaft 34. The zero stops 203, 232 for both line totalizers are connected together and controlled by a single bellcrank 95, operated as described above. Total-taking from column totalizers. Distinguishing type. The column totalizer 2 .. 5 from which the total is to be taken is moved into the calculating zone so that the highest denomination which contains a digit is engaged with the master wheel 38 and the columntotalizer total key 22, 176, Fig. 10, is then depressed. The end of this key lifts a slide 180 to position zero-stop mechanism (not shown) for the column totalizer. The key 176 also rocks a lever 282, Fig. 7, to lower a slide 287 which operates the gearing X between the differential-actuating shaft 50 and the shaft 37 carrying the master wheel 38, the gearing thus being reversed. The slide 287 also depresses a key '290 which changes the type face. Further, the key 176, Fig. 10, depresses the common lever 175 which releases the clutch 178 .to cause the total-taking as described above. Key detent mechanism. The line-totalizer total key 136 Fig. 10, swings about a bar 135 and has a projection 138 pulled by a spring 137 against a fixed bar 139. A latch lever 140 is pivoted to the key lever 136 and also connected thereto by a spring 141. When the key lever 136 is depressed, a hook part 142 of the latch lever engages in a groove -163 in the bar 139, the end 145 of the latch lever operating a lever 148 connected to a lever 153 to place the end 155 of this latter lever beneath a common bar 250. When a totalizer moves .into a certain position, a cam thereon rocks a lever 251 to depress the bar 250 and so release the latch lever 142, the spring 137 then restoring the key lever 136. The column-totalizer total lever 22 is provided with similar latching means, released by the common bar 250. Specification 496,720 is referred to.