Patent GB-440108-A (GB)
Abstract: 440,108. Calculating - apparatus. BURROUGHS ADDING MACHINE CO., 6071, 2nd Boulevard, Detroit, Michigan, U.S.A. June 20, 1934, No. 18248. Convention date, June 21, 1933. [Class 106 (i)] Adding-apparatus.-In a machine of the ten-key, independently-operated type the usual field of settable pins is divided into sections and the amount keys are connected with setting members for setting corresponding pins in each section of the field. The usual totalizers and printing mechanism are also split into sections thereby increasing the capacity of the machine for effecting the distribution and accumulation of different classes of amounts and enabling totals to be taken of the various classes. The invention is described as applied to the Hopkins machine of Specifications 18058/07, 18320/08, 18321/08, and 18322/08, [all in Class 106]. Depression of the numeral keys 1, Fig. 1, through levers 3 and index bars 5 raises corresponding pins 7 in a movable carriage 6 controlled by an escapement mechanism. After the pins 7 have been set, the machine is given a stroke of operation and the carriage is raised to cause the pins 7 to set up stop pins 20 in a stationary field to limit the subsequent movement of the actuating rack bars 21 for the totalizers 30, 31. The engagement of the totalizers with the rack bars is under the control of tappets 36 on the travelling paper carriage. The rack bars carry type elements 26 operated by the usual form of hammer impression mechanism. In accordance with the present invention the index bars 5 are provided with a pair of spaced fingers 50, Fig. 3, and the pins of the movable carriage 6 are divided into right and left-hand sections 7R, 7L so that corresponding pins are set up simultaneously in each section by the fingers 50. The stationary pin carriage is also divided into sections with pins 20R, 20L. In order to avoid the setting up of pins in the right-hand section by the left-hand finger 50 an enlarged space is provided between the two sections and the lower ends of the pins 20L are offset. Full operation of the pin carriage escapement mechanism is prevented if the finger 50 is raised in the space between the sections by the escapement tooth on the operating lever 10 engaging a lug 51 on the carriage rack 14. The usual plate which controls the zero stops 20 is replaced by a pair of blades 55, 56, Figs. 5 and 6, corresponding in length to the pin sections and offset to cooperate with the zero stop pins 52R, 52L. The totalizers are divided into two sections by interrupting the transfer mechanism between two denominations. The transfer mechanism includes actuating sectors 40, Fig. 7, teeth 41, levers 44, and latch arms 46. At transfer a transfer tooth 41 rocks the pawl 42 and the lever 44 and a stud 45 on the lever frees the latch 46 so as to permit the sector 40 to rock until its arm engages a transverse rod 48. When the totalizer pinions are moved out of engagement with the racks and into engagement with the transfer sectors the rod 48 is operated and the sectors are permitted to complete the transfer operation. To prevent a transfer from the right-hand section to the left-hand section the stud 45 is omitted. Printing totals.-The hammer impression mechanism, Fig. 6, comprises hammers 27, hammer latches 73, operating arms 61, and firing members 64. The arms 61 are secured to an operating shaft 60 and are connected to the firing members 64 by springs 63. The members 64 are normally held by latches 66 engaging the arms 65 thereof while the front ends 68 of the latches engage notches in the actuating racks. Movement of the racks from normal position operates the latches to free the firing members but these members do not move as a pin 70 thereon rests on the tails of the hammers. After the racks have been set the shaft 60 operates and pins 76 on the arms 61 effect the rocking of the hammer latches 73 to free the hammers, which are thereupon fired by the stressed springs 63. Zeros to the right are controlled by overlapping projections 77 on the latches 66. To render the two sections of the printing mechanism independent the overlapping projection 77 of the adjacent latch is omitted. To avoid printing of an item in both sections a bail 78 fixed on a shaft 79 normally blocks the firing members of the lefthand section. To enable totals to be printed separately four total keys 80, 120, 130, and 150, Fig. 2, are provided to condition the machine for total-taking from the respective totalizers. The keys 80, 120 for the left front and left rear totalizers are operatively connected to a link 85 while the keys 130, 150 for the right front and right rear totalizers are connected to a link 137. These links 85, 137 are connected to latches 86, 138, Figs. 7 and 10, normally positioned under dogs 91, 140 pivoted on slide plates 93, 141. A bail 95 arranged in front of the slides is operatively connected to a shaft 98 rotated once during each cycle of the machine so as to raise the bail and therewith one or other of the slides through its connection with the dog that has been released according to the key depressed. If the slide 93 is raised a cross-arm 106R cooperates with the pendant arms 105R of stop arms 101 to raise the stop arms into position to prevent movement of the right-hand group of actuating racks. This operation will leave the left-hand group of racks free to be moved to the extent determined by the amount standing on the left front or rear totalizer ; as however the firing members are normally blocked by the bail 78 means are provided to remove the bail comprising a collar 110, Fig. 1, on the link 85 and a linkage 111, 113, 114, 115, the arm 115 of which co-operates with pin on an arm 79<a> secured the bail shaft 79. If the key 130 or 150 is depressed the corresponding totalizer is selected for engagement with the actuating racks and the dog 140 is released so that the slide 141 is raised and the left-hand group of racks will be blocked by the corresponding stop arms 101. A control key 160 may be provided for use when items are added only in the front totalizers. In this arrangement, when a total is taken from one or other of the front totalizers the key 160 also is depressed so that the amount may be added in the corresponding rear totalizer. The invention may be applied to machines with a rotary totalizer magazine such as described in Specifications 391,869 and 392,181. Reference is made also to U.S.A. Specifications 1,143,240 and 1,321,260.