Patent GB-225491-A (GB)
Title: Improvements in and relating to control mechanism for perforated record controlled machines for compiling statistics
Filed: 1923-05-30
Abstract: 225,491. Haddan, A. J. H., (National Cash Register Co.). May 30, 1923. Statistical machines. -Relates to recordcontrolled machines of the type described in Specifications 184,429, 184,824, and 185,071, for analyzing a detail, summary, or grand summary record sheet or for producing a record, either printed and perforated or printed only, that is a summary or grand summary of the data previously compiled, and consists in the provision of electrical means by which the various mechanisms are controlled and selected. The operating mechanism for the machine is described in Specification 221,255. and the differential selecting and actuating mechanism for the totalizers is described in Specification 221,134. The function of the machine is controlled by a manually operated shaft 321, Figs. 7 and 34, which during analyzing operations closes switches 747. 772, and 879, and during total-taking operations opens these switches and closes other switches 1022 - - 1025, by means of a cam disc 1026. Operation and starting controls. The circuits for the amount banks, the totalizer shafts. the bank " M " for controlling the recording of the units number of the selected totalizer and for stopping the machine, are controlled by switches 714 - - 718 which are opened and closed during each cycle of operation by cams on the shaft 151. Fig. 7. The cam for the switch 715 is secured to cams 310, 311 that operate the amount differentials and are adjustably mounted on the shaft 151 to vary their timing. A switch 730 is associated with the switch 715 to prevent sparking. In order that the machine may be operated by the motor, certain other switches must be closed, viz. (1) the switch 862, Fig. 33, that is acted upon by an arm 695 controlled by the paper carriage locking arm 559, (2) the switch 864 associated with the armature of an electromagnet 886. Fig. 38, (3) the switch 846, Fig. 34, associated with the armature of an electromagnet 845, (4) the switch 816 closed on depression of the starting key 805 to permit the magnet 845 to release the driving clutch of the motor, and (5) the stopping switch 718 which serves as a feeler to determine whether or not the machine shall stop after a certain cycle of operation. Master switch and record sheet controls. The master switch M-S which serves to connect the contact banks of the totalizer shaft differentials to the positive and negative generator terminals comprises, as shown in Figs. 13 and 15, five sets of ten contacts 495 - - 499, and two sets of eleven contacts 500 - - 503 which co-operate with bars 525 - - 531 embedded in insulated bars 522 secured together with metal bars 523 to plates 520 pivoted to parallel arms 491, 517, the arm 491 having rollers engaging the cam periphery of a plate 485 adapted to put the eleven contact sets or the ten contact sets in circuit respectively when the machine is analyzing a detail record or when analyzing or producing a summary record. Co-operating with a control column C of perforations of the detail record. Fig. 1, is a set of contacts 708 - - 710, mounted on an arm 791, Figs. 33 and 34, and adapted to be moved to operative position, with respect to the contact band 615 on the record band guide drum 572, by means associated with the locking arm 559. The contacts 708, 710 and perforations serve to maintain the circuit when the switch 718 is opened during each cycle. To maintain the circuit after the last four rows of perforations have been analyzed, special contacts 706, 707, associated with the contact band 621 of the feed drum 573 are provided. The contacts 709, 710 prevent starting of the machine if no record material is present or stop the machine if the material should break, the circuit through these contacts and band 615 energizing the magnet 886 to open the main circuit switch 864. The contacts 708 - - 710 are raised during the feeding of the record material by means of an arm on the shaft 792 and a cam 798 operated by the main shaft 150. Summary and grand summary record producing mechanism. The total-taking mechanism is described in Specification 221,255, the analyzing mechanism being rendered inoperative and the printing mechanism, zero stop mechanism and the totalizer selecting switches being brought into action. This is effected by coupling cams to the shaft 151 in a manner similar to that described in the aforesaid Specification. The amount punches and type wheels are set by means of gears on nested sleeves associated with the differentials through engagement with the actuating racks which are controlled by the zero-stop mechanism as described in Specification 221,162. Two other sets of punches and type wheels are provided to record the units and tens of the number of totalizer selected. The units digit is controlled by the differential mechanism M. Fig. 16, which also controls the position of the master switch M-S. The driving member 213 of this mechanism is loose on the shaft 294 and is actuated by a pair of sectors 450, 451 through cams 455, 456 secured to the shaft 151. The tens digit is controlled by a differential mechanism N having only one bank of contacts, the driving member being secured to the shaft 294. An additional differential mechanism MA mounted adjacent the mechanism M is controlled thereby by means of a segment 1097, Fig. 12, meshing with a segment 1098 on the master switch cam plate 485. The contact segments of the differential MA are arranged oppositely to that of the differential M. Special punches are provided to punch the control perforations in the column C, Figs. 1 and 3. Totalizer selecting switches. These switches 1211 - - 1215, Fig. 34, which are operative only during total-taking operations are driven from a shaft 984 through bevel gearing and Geneva mechanism as shown in Figs. 45 and 46, the wheel 1197 having eleven notches and the wheel 1204 ten notches. The switches 1211. 1212 select the group of totalizers, the switch 1214 selects the totalizer from the group, and the switches 1213, 1215 control the differential mechanisms N, M respectively. The switches 1211, 1213 have each ten insulated contacts, an insulated contact ring, and a contact arm secured to the Geneva-wheel 1204. The switch 1214 has ten pairs of contacts, two contact rings and a bifurcated contact arm secured to the Geneva-wheel 1197. The switch 1215 is similar to switch 1214 except that it has eleven pairs of contacts: the eleventh step serves to control the master switch during every eleventh or blank operation of the machine and moves the Geneva-wheel 1204 so that the contacts select the next group of totalizers. To control the circuit of the starting electromagnet 845 during totaltaking operations while the stopping switch 718 is opened three switches 1260 - - 1262 are provided; these are controlled by arms 1263, 1269, Fig. 45, having rollers engaging cam discs 1202, 1266 respectively, the switch 1262 remaining closed until the wheel 1204 receives its tenth movement. Summary and grand summary record analyzing. The records are run through the machine in the reverse order with the printed side down; for the amounts the analyzers are those used in analyzing detail records. For selecting the groups a special set of contacts 703, Fig. 33, is provided, and for the individual totalizers the analyzer contacts 661 - - 664 for the column G9 are utilized. For this purpose the two sets of contacts co-operate with the differential mechanisms M. and MA, respectively. Printed summary record, producing. A special carriage is provided for the record material and the operating mechanism for the punch actuators is rendered ineffective as described in Specification 221,613. Specifications 221,142 and 221,167 also are referred to.