Patent GB-190800655-A (GB)
Title: Improvements in and connected with Adding Machines.
Inventor: BOULT ALFRED JULIUS
Filed: 1908-01-10
Granted: 1909-01-07
Abstract: 655. Boult, A. J., [Burroughs Adding Machine Co.]. Jan. 10. Calculating-apparatus. - A d d i n gmachines of the Burroughs type described in Specifications No. 17,126, A.D. 1893, and No. 27,874, A.D. 1903, are provided with means whereby they may be "split " or divided into two or more independently operative sections, and may be arranged so as to print the totals accumulated in the different sections of the machine independently and not simultaneously. In the two-section machine illustrated, "splitting" is effected, as shown, between the fifth and sixth denominations, counting from the right, by the omission of one of the overlapping tails d, Fig. 6, of the hammer latches 717, which thus causes the interruption at this point of the co-operative relationship usually existing between the latches for the automatic printing of the necessary ciphers to the right of any digit. Instead, however, of the provision of the single universal bail or rod 209, under the control of the total key for disengaging the usual retainers or latches 415 of a Burroughs machine from all the racks 610 at the commencement of a totalling operation, two such bails 209, 209<a>, Fig. 3, are provided, corresponding to the sections into which the machine is split, and are operated independently by the left-hand and right-hand total keys A', B<1> respectively. The total key A' is connected to a bail A, the side arms a of which are pivotally suspended from a cross-rod 204, and the total key B' is similarly connected to a bail B, which is also pivotally suspended from the crossrod 204 by means of arms b, b. The bails A, B may be controlled by their own springs x<2>, xl, or by a spring x attached to a lever 227L, as shown. The releasing bails or rods 209, 209<a> are respectively attached to the swinging bails A, B by means of two pairs of links 216, 216<a>. The bell-crank lever 227L, which, in a Burroughs machine, is usually connected positively both to the link 216 and to a link 911, Fig. 1, controlling a pitman 914, is here connected only to the latter link, the other end of the bell-crank lever being attached to the spring x. Pins a, b<2>, projecting from the stems of the total keys A', B<1> respectively, engage with the lever 227L and operate the link 911 and pitman 914, and thus position pinions 916 with respect to the racks 610 in the same manner as the depression of the usual total key does. When the total key A' for the left-hand section of the machine is depressed, the racks corresponding to this section only are released, and consequently the corresponding adding-wheels only are cleared, the total accumulated on the adding-wheels of the righthand section remaining undisturbed ; similarly for the total key B' for the right-hand section. Both total keys may, however, be depressed simultaneously, in which case, both sections of the adding- wheels are cleared. A sub-total may be taken from either set of adding-wheels by operating the proper total key A' or B' in the same way as the usual total key is operated to effect this result.