Patent GB-559358-A (GB)
Title: Improvements in or relating to printing mechanism for statistical, accounting and like machines
Filed: 1941-02-01
Abstract: 559,358. Statistical machines; printing. REMINGTON RAND, Inc. Feb. 1, 1941, No. 5175/43. Convention date, Feb. 1, 1940. Divided out of 555,823. [Class 106 (i)] Control mechanism for the printing mechanism of statistical, accounting and like machines, comprises a print control element individual to each of a number of type carriers, normally effective to prevent printing from the associated type carrier, means whereby movement of any type carrier beyond zero disables the associated print control element, a connector attached to each print control element and manually settable into or out of engagement with the next lower denominational print control element, said connector, when in engagement with said next control element disabled, said next control element its associated control element and said next control element, whereby when said associated control element is disabled, said next control element is also disabled, and means for changing simultaneously the setting of the connectors associated with each of one or all groups of type carriers. The Specification is divided from Specification 555,823 but is concerned only with the printing mechanism of the statistical machine described therein. Printing.-Associated with each type carrier 197 is a fixing pin 617 and a spring-impelled type hammer 620 restrained by latch lever 6261 to which is pivoted trip link 628 held in inactive position by link 661 pivoted to control lever 660 which is normally held in clockwise position by ledge 196 on the type carrier. When a type carrier has been raised from zero position, the associated link 628 rocks clockwise under spring influence until its shoulder 631 contacts flange 632 on print bar 633 which at each mid-cycle is given a quick oscillation under the control of a rockshaft 640 (not shown) to pull link 628 rearwards (to the right as seen in Fig. 10) to release latch 6261 and permit printing. A bail bar, also controlled by the rockshaft, is rocked clockwise clear of hammers 620 during printing and then back again to restore the hammers. Prevention of printing.-Printing is prevented under certain conditions, e.g., non-list tabulating. Non-print shaft 667 positions bail bar 671 which may be engaged by manually-set hook 675 to position control lever 672 which carries pin 674 adapted to overlie the end of the associated link 628 when shaft 667 is in its counter-clockwise, non-print position, so as to prevent the engagement of link 628 with flange 632. With shaft 667 in printing position, pin 674 is clear of link 628 and printing is permitted. Hook 675 may have its forward notch 669 engaged with fixed flange 678 to render link 628 active, or its rear notch 669 engaged to render link 628 inactive, independently of shaft 667, both positions being shown in Fig. 10. Shaft 667 is normally set to non-print but may be moved to print position at total-taking or may be set manually for itemprinting. Control of zeros.-Each latch 6261 carries a hammer-latch connector 870 which may assume any of four positions A, B, C, D, Fig. 7. The connector in either of positions A or B contacts pin 871 of the latch of next lower denomination so as to print a zero if the associated type carrier has not moved. In positions C and D, the connector is inactive. Sleeve 875, loose on shaft 667, has a flange 877 with a series of slots 878, Fig. 11, embracing control links 872 pivoted to the connectors. Links 872 carry four studs 874 which can pass through the wider front part of slots 878 for adjustment purposes. When a link moves to the rear part of the slot under the action of spring 881 connecting adjustment handle 873 and guide piece 880, flange 877 is gripped between a pair of adjacent studs to position the connector in one of the pre-set positions A, B or C. Sleeve 875 is adapted' to be rocked counter-clockwise manually or at the sensing of a special hole, e.g., on an alphabet card, so as to raise the connectors one step to cause or prevent the printing of zeros according to individual settings. If desired a coupler may be set in an inactive position one step below A so as to be moved from inactive to active position at the sensing of a special hole. Specifications 522,512 and 523,532 are referred to.