Patent GB-191116077-A (GB)
Title: Improvements in or relating to Adding and Listing Machines.
Inventor: BOULT ALFRED JULIUS
IPC: G06C11/04
Filed: 1911-07-11
Granted: 1912-07-11
Abstract: 16,077. Boult, A. J., [Burroughs Adding Machine Co.]. July 11. Adding-apparatus with operating-means; printing totals and s u bt o t a l s; interlocking; operation a n d i t e m counters.-In machines of the Burroughs type having two sections formed by " splitting " the machine, the lefthand section of which serves as an item or operation counter while the right-hand section is adapted to accumulate items as usual, the machine is so arranged that (1) the left - hand section prints a u t omatically a serial number against each item accumulated a n d printed; (2) the serial numbers may begin with any number which can be set up on the keys of the left-hand section and printed in the usual way; (3) when totals or sub-totals are printed, no printing of the appropriate serial number takes place, but in the former case the left-hand section of the machine is cleared as in the case of a normal total-printing operation. Arrangements for splitting. The machine resembles those described in Specifications 655/08, 656/08, and 2119/09, and is permanently split between the fourth and fifth banks from the left by the omission of the tail of one of the usual hammer-latch tripping-pawls 718. The corresponding left - hand section 910<a> of the counter is mounted within, but independently of, the main counter frame 910, Fig. 6, and the cross rod 910<d> of the latter passes through slots, Fig. 1, so arranged in the frame of the former that when the pinions 916 of the frame 910 are out of gear with their racks 610, the pinions 916<a> mounted in the frame 910<a> may be either engaged with or disengaged from their corresponding racks, but when the pinions 916 are in their rearward or engaged position, the cross-rod 910<d> maintains the pinions 916<a> in engagement with their racks. (1) Supposing that a commencing serial number has been set up on the machine as explained below, and that a normal operation is to be commenced, at the beginning of the rearward movement of the operating-lever, the pinions of the left-hand section are rocked out of engagement with their racks, like those of the accumulating-section, but only while those racks that have undergone the additional upward or transferring movement are being restored to normal. This temporary disengagement is effected bv the forward movement of a spring-controlled bail 902, Fig. 2, mounted in a frame 922<b> pivoted at 904, which is rocked by a wipe-pawl 821<a>, Fig. 1, similar to the usual pawl 821, and disengages a stud b<1> on the bailframe 922<b> from a hook b on a link 910<c>, thus allowing the pinions 916<a> to fall by gravity out of engagement with their actuating-racks. As the operating-lever continues its rearward movement the stud b<1> again engages the hook b and re-engages the pinions 916<a> with their racks, in which position they are held by the spring- controlled bail during the remainder of the downward movements of their racks. The amount of this movement and the consequent printing of the proper serial number are determined, as in the case of the printing of a total or sub-total, by the engagement in the reverse direction of the transfer parts which act as zero stops. When, on the return movement of all the racks, the pinions 916 of the accumulating- section are moved into engagement with their corresponding racks, the pinions 916<a> will of course be maintained in their rearward position, and will remain in engagement with their racks not only during the return movement of the racks, including any additional movement beyond the normal position owing to the occurrence of transfer at any point in the left-hand section, but also during an additional movement which is always communicated to the " units " rack of such section by the co-operation of a pivoted arm f<5>, Fig. 8, on the main counter frame 910 with a pivoted abutment piece f<2> on the modified transfer lever 413<a> adjacent to and cooperating with the said " units " rack. The abutment piece is positioned by the bail 402 whenever any key in the accumulating-section is depressed. (2) When any initial serial number is set up on the keys of the left-hand section, a rod c<9>, Figs. 1 and 2, is moved rearwards and a latch c<1> engages and holds in its forward position the bail 902. The pinions 916<a> of the left-hand section are thus disengaged during the whole of the downward stroke of their racks, the extent of which is determined, as in the case of the normal Burroughs machines, by the key - set stop-rods 270, Fig. 2, and engaged as usual during the upward stroke. The initial number is thus printed, accumulated on the left-hand section of the counter and increased by unity at the end of the stroke of the operating-lever ready for the next printing operation. The engagement of the bail 902 by the latch c<1> prevents the bail from exercising one of its normal functions, that of releasing the latches 415<a> of the racks of the left-hand section by means of hooks 415<b>. These latches will be released, in the present case, as usual by the depressed keys. The latch c<1> is released by the key-restoring bail 202. (3) A blank stroke of the operating-lever must be taken as usual to restore all the transfer parts to normal, before the total or sub-total key can be depressed, owing to the co-operation of the usual interlocking-parts w, 424<a>, Fig. 1. Such depression causes a pin b<4>, Fig. 2, on the total key-lever 227 to engage the inclined end b<3> of the link 910<c> and throw the link out of engagement with the stud b<1> of the bail 902. As no keys in the item section have been depressed, none of the corresponding strips 214 is in its rearward position. Consequently the bail 402. Figs. 1 and 2, and the rod d<2> attached thereto are drawn forward so that a bail d<1> is in its upper position. As the usual pawls 718 for tripping the latches 717 of the hammer-drivers 716 are rocked forward as usual by the bail on which they are mounted, the bail d<1> co-operates with a cam-notch in the pawls of the left-hand section, and raises the pawls, so that the latches 717 of this section are not tripped. The hammers 715 do not, therefore, strike the typeplates 618. As usual, the movements of the main counter frame depend on the position of the pitman 914, which in turn depends on that of the total or sub-total key. The actuation of either, however, depresses the pitman so that a latch Z can engage the pin 958; the left-hand section of the counter thus partakes of the movement of the main counter and has a corresponding function; the pinions of the left-hand section are cleared in case a total is printed, but are not cleared if only a sub-total is being printed. The serial numbers and items appear as shown in Fig. 12. Specifications 17,126/93, 21,268/97, 9600/98, 27,874/03 and 6114/08 are also referred to.