Patent GB-730839-A (GB)
Title: Cash registers and similar accounting machines
IPC: G06C7/10
Filed: 1953-06-24
Abstract: 730,839. Cash registers; feeding webs. NATIONAL CASH REGISTER CO. June 24, 1953 [March 11, 1953], No. 17472/53. Classes 100 (1) and 100(4). [Also in Group XIX] Type - wheel machines; machines with two sets of type.-Mechanism is described in a cash register (see Group XIX) for printing on a record strip retained in the machine and on a voucher strip. After a series of items has been printed, the printed portion of the voucher strip is fed out of the machine and may be torn off. An item is set on denominational rows of amount keys 110, Fig. 4, and a motor - driven cycle of operation is initiated by depression of a control key. At the beginning of the cycle, coupling pinions 272 for each denominational order are disengaged from primary and secondary toothed differential members 247, 249 rotatable on a shaft 248. The shaft 248 is then rocked clockwise together with arms 251 carrying a rod 250 which during this movement zeroizes the secondary members 249 and allows springs 285 to rock the primary members 247 until projections 246 engage the depressed key stems or zero stops 286 which are retracted on depression of keys in the same rows. The pinions 272 are then engaged with the differential members, after which the rod 250 is restored to zeroize the primary members and differentially set the secondary members which are geared through ring gears 263 and internal transmission shafts to two sets of type-wheels 617, 619, Fig. 2, for printing on a record strip 123 and on a voucher strip 125 respectively, and rotatable on a shaft 618 and stud 620. A differential mechanism associated with the control keys similarly positions a pair of type wheels. Cam-controlled bars 395, Fig. 4, and 636, Fig. 2, engage the ring gears during printing. Date type wheels 625 for printing on the voucher may be set through ring gearing 630 by knobs 627-629. Consecutive number type wheels 623, 624, Fig. 39, are rotatable on the stud 626 which supports the date wheels and on the shaft 618 respectively. The latter also carries a symbol type-wheel positioned by a total control lever. Constant matter is printed on the voucher by an electro 859. Ink-ribbon mechanism.-The ribbon 697, Fig. 50, is guided on a frame 727 removably mounted in the machine, the ribbon passing between the record and voucher strips 123, 125 and the respective type-wheels. The plate 727 supports shields 731, 732 adjacent to the strips 123, 125. The ribbon is fed and inked by a roller 733 against which it is pressed by a roller 734 in a spring-loaded yoke 735, and is tensioned by a roller 737 in a spring-loaded yoke 738. The feed roller 733 is advanced during each machine operation by cam means acting through a pawl and ratchet mechanism. Ink is applied to the roller 733 through a transfer roller 739 against which a wick 741, extending into a reservoir 742, is lightly held by a spring. The transfer roller 739 is carried by a yoke 740 and may be disengaged from the feed roller by manual operation of a lever 750 to cam the yoke 740 clockwise. Line-spacing; feeding webs.-The record strip 123 passes from a supply roll 643, Fig. 2, over a sleeve 647 and studs 649 to a roll 651, see also Fig. 38. Normally, a cam 666 rocks a lever 660 engaging a stud 659 in a plate 658 carrying three feed pawls 657 which advance a ratchet wheel 655 fast with the roll 651. The ratchet wheel is also engaged by retaining pawls 656. A cam 677 fast with a feeler arm 678 co-operates with the stud 659 to control the extent of the return movement of the feeding pawls and consequently their advancing movement in accordance with the diameter of the roll. Manual operation of record strip.-The record strip 123, Fig. 2, passes between rollers 923, 926 carried by plates 924, 927 which may be rocked counter-clockwise about a stud 925 and against a spring 928, by a stud 931 in a knob. The record strip is thus temporarily advanced to enable recent entries to be read. When the knob is released, a spring in the supply roll restores the strip. Hammer impression arrangements. - The record strip hammer is carried by a yoke 646, Fig. 37, in which is mounted on a stud 683 an adjustable cone 684 engaged by a cam-plate 685 fast with an arm 686. A hook on the latter normally engages the stud 683 to latch the hammer. The arm 686 is rocked to operate the hammer against springs 690, 691, by a cam 667 and is restored by a cam 693. A print is made on the voucher strip from an electro 859, Fig. 48, and from the consecutive number and date type wheels 625 by a hammer 861 pivoted on a yoke 863 and resiliently held at an appropriate angle by a spring 874. A roller 865 in the yoke is held by a spring 864 in contact with a cam 866 which is rocked when a print is to be made by an arm 869 actuated by a pitman 871. When a print is to be made on the voucher strip from the amount type-wheels 619, Fig. 2, a pitman 848 is depressed to rock a yoke 846 coupled to a cam which actuates a hammer 839 carrying a platen 838. A cone adjustably mounted on the hammer is held by a spring in contact with the cam. Specification 285,500, [Class 100 (4)], is referred to.