Patent GB-184824-A (GB)
Abstract: 184,824. Haddan, A. J. H., (National Cash Register Co.). Feb. 25, 1921. Statistical machines.-Relates to a multipletotalizer electromagnetically-controlled machine for compiling statistics from previously prepared record sheets and consists in an arrangement or combination of groups of totalizers, analysing and selective mechanism for selecting a totalizer from a group or groups of totalizers and means for actuating the same whereby the number and amount of the various sales, the character of the goods, the name of the clerks and cashiers, and the kind of transaction &c. are registered. In the machine described, the digits are selected by the use of not more than two perforations as shown in Fig. 2, and the record sheet Fig. 1 is divided by control perforations into two sections of ten columns each, the number of columns in the sections corresponding to the number of groups of totalizers and number of denominations in each totalizer respectively. Each column in the right-hand set controls a group of totalizers and the combination of perforations determine the totalizer of that group which is to be selected; each column in the left-hand section controls the amount to be entered on the totalizers selected. The record sheet is produced as described in Specification 181,072. Operating by motors.-A motor 15 drives, through worm gearing, a shaft 18 and clutch 19- 21 which communicates motion to a main shaft 10, Fig. 25. Totalizing-counters; differential mechanism.- The totalizers 27 are mounted on shafts 28, Fig. 12, and are arranged in such a manner that all the common denominational elements of all the totalizers in any group are mounted together. The shafts 28 are supported for lateral and vertical movement and are arranged in two tiers of five; the lateral movement of each shaft is effected, under the control of a differential mechanism, by a rack 29 guided on rollers on a plate 37 and secured to an extension on the shaft by means of a boss 34 and a pin 33 on which the boss can slide. A tooth 35 on the boss and a notched plate 36 acts as an aligning-device. The differential mechanism employed is that described in Specification 185,075 and comprises a constant-excursion driver 61 and a differentially movable member 62 adapted to be controlled by the armature of an electromagnet 84. The differential mechanism for controlling the movement of the totalizer-actuating racks is substantially identical with that used for positicning the shafts 28. Each differential member 62 carries a contact support having two insulated contact blades 101, 102, each with a long and short finger adapted to co-operate with long contacts 110, 111 one on each side and ten short contacts on each side designated r-0 to r-9 and l-0 to l-9. The totalizer actuating racks 118, Fig. 6, are secured between plates forming a structure 115 that receives a reciprocating movement through a rack 120 thereon and sectors 133, 123, 121, associated with levers 129, 132, and cams 127, 130 on the main shaft 10, the driver 61 being loose on the shaft 153 but secured to the sector 123. After the racks have been differentially positioned the totalizer shafts 28, which are carried on levers 187, guided by fixed rollers 189 are lowered and raised into engaging position by means of bell-crank levers 181, Fig. 9, connected by a pin and slot arrangement to a slide 150 reciprocated by means of a slotted lever 152 from a lever 160 oscillated by cams on the main shaft 10. The lever 160 also actuates a lever 157 to reciprocate slides 151. 167, Figs. 9 and 12, adapted to control two aligning devices, one for holding the totalizer pinions when in their disengaged position and the other for holding those which are not in engagement with the racks when they are moved to engaging position. The slides 150, 151, begin to move together but the slide 151 continues to move after the slide 150 has come to rest and thereby causes relative movement between the bell-crank levers 181, 208, connected to the respective slides so that a pin 211 on each of the levers 208 rocks a lever 210, Fig. 10, fixed to its shaft 184 and through a pin 207 thereon engaging a slot in a slide 203 withdraws the slide and aligning-plates 200 mounted thereon. The means for aligning the totalizer pinions when in engaging position comprises stationary plates 201 mounted on the frame plates 9. Hooks 214 on the slides 151, 167, engage the shafts 28 to prevent displacement of the totalizers when in the rack engaging position. The actuating-racks are positively aligned when they have reached their normal position by means of hooks 341 adapted to engage pins 342 on the racks and secured to the shaft 340 actuated by a link 343 and lever 344 through a cam on the main shaft. Transfer mechanism. - The rack structures 115 carry the transfer parts the construction of which is identical with that described in Specification 185,076. Analyzing g mechanism; electric circuits. The record sheet is mounted in a removable carriage 401, Fig. 21, of the type described in Specification 181,072; the carriage is provided with castors 410 running on rails 411, and a door on the casing of the machine has rails which form extensions for the rails 411 when the door is lowered to allow the carriage to be withdrawn. The carriage when in position is locked by a latch 417 and arm 421, Fig. 21.. The guide and feed drums 425, 426, for the record sheet have pins engaging the edge perforations thereof, one edge being provided with twice as many perforations and pins as the other. The drums 425, 426 are further provided with latch devices which are normally free but are adapted to hold the drums in set position when the carriage is removed. The drum 426 is positively driven by a Geneva stop wheel 486, Fig. 25, and gearing from the main shaft 10. The analyzer comprises two plates 501, 502 extending across the machine and carrying insulated contacts 505 arranged in twenty-one groups of 'four and adapted to make electrical connection with stationary insulated contacts 508. The analyzer is reciprocated vertically by means of parallel arms 511, 512, Fig. 25; the arm 511 is fixed to a shaft 515 having an arm 519 pin and slot connected to a lever 520 operated by a cam on a shaft 24 driven by the main shaft. To select any of the ten digits the contacts and circuits are combined as shown in Fig. 3. The totalizer selecting circuits, the totalizer group magnet circuits, and the rackactuator magnet circuits are controlled by switches in timed relation during the operation. The group-magnet and rack-actuator magnet switches are actuated by cams on the main shaft 10 and the totalizer-selector switch is oscillated by mechanism as described in Specification 185,071. The current for the " classification " totalizer groups G-<0> to G-<9>, Fig. 1, passes from the positive side of the line through the groupmagnet switch through the group selected conductors to the selected group magnet 84 and thence through other conductors to the negative side of the line. The circuits for the numerical quantities and amounts are through the rackactuator magnet switch to the differential membars of the rack-actuators A-0 to A-9, Fig. 1, to appropriate magnets 84 and thence to negative side of line. The magnets 84 may be provided with locking circuits to maintain them closed for a sufficient period. Special record sheet control contacts are provided and operate as described in Specification 184,429 to prevent operation of the machine: (1) unless the carriage is supplied with a properly perforated record sheet properly positioned (contacts 526, 548), (2) when no record sheet is placed on the carriage (contacts 568, 569). These latter also serve to stop the machine in the event of the record sheet being ruptured. Specification 158,084 also is referred to.