Patent GB-457273-A (GB)
Abstract: 457,273. Calculating apparatus. BURROUGHS ADDING MACHINE CO., 6071, 2nd Boulevard, Detroit, Michigan, U.S.A. May 24, 1935, No. 15159. Convention date, May 25, 1934. [Class 106 (i)] A machine for use in banks for keeping a record of the number of items handled for each customer comprises a registering mechanism divided into two sections mounted on a common support so as to engage with the differential actuating mechanism simultaneously and means to position selectively one section for engagement in the additive or subtractive sense while the other section is always engaged for addition. The adding section is controlled automatically by the paper carriage to add a unit in predetermined columnar positions and means are provided to disable the automatic means to permit the adding section to receive entries set up on the corresponding section of the keyboard. A control means is associated with the total-taking mechanism to enable totals to be taken from the two sections simultaneouslv. The invention is shown applied to a machine of the type described in Specifications 274,411, and 285,885, [both in Class 106 (i)]. The registering mechanism 25 is carried by a frame with side arms 28 pivoted on a shaft 29, Figs. 1 and 2. The arms 28 have pins 33a adapted to be engaged by one or other of the hooked ends 33 of a lever 31 pivoted to a three-armed lever 32 operated by the main shaft 39 to bring the register into and out of engagement with the actuating racks 4. The register is divided into two sections ; the right-hand section is formed as an add and subtract totalizer for entering the chargeable items and the left-hand section is a counter for such items. The right-hand section is formed as a tumbler register with add and subtract pinions 25, 25a mounted on a frame 26 rockable on pivots 27 carried by the arms 28. The frame 26 has a rearwardly extending arm 46 operatively connected to the subtract key S. The counting section, which is without subtract pinions, is carried by plates 63, Fig. 2 and 6, rigidly secured to the frame arms 28 and supported for movement on a cross-bar 66. The pinions of the counting section are held aligned in the disengaged position by detent fingers 68 secured to a shaft 69 with an arm 71 operatively connected to a three-armed lever 73 forming part of the detent mechanism for holding the register in or out of engagement with the actuating racks. The counting section is associated with four banks of keys to the left of the amount key banks. The " 1 " key 1a, Figs. 2 and 3, of the units bank of the counting section is provided with a modified form of bell-crank 2a which engages a lug 90 of an auxiliary lever 91 to which the index or differential stop wire 3 is. pivoted. To the lever 91 is connected a pawl 92 having a stud 94 co-operating with a cam surface 96 on a slide 97. When the slide is moved forwardly the cam surface 96 depresses the pawl 92 so as to bring its notch 98 into position to engage a lip 86 on a pivoted arm 82. When a chargeable item is set up on the amount section of the keyboard and the usual key locking slides 6 are moved rearwardly, a projection 80 on the slides engages a cross-bar 81 on the arm 82 so as to rock the arm 82 and through the pawl 92 will set the index wire 3. As the key 1a is not depressed during this automatic setting, the locking slide 6 for the units bank is not operated consequently the zero stop latch 8 is not moved to release the associated rack 4. To effect the release the latch 8 is provided with an extension 100 which is engaged by the index wire 3. The slide 97 is moved forwardly under control of the paper carriage for which purpose the slide has a pin- and-slot connection with a lever 102, Fig. 3, the other end of which is connected to a slide 105. The slide 105 has a slot in which engages the upper end of an arm of a bell-crank lever 107, to the other arm of which is attached a link 108, Fig. 1, connected to a lever 109 engaging the forked end 112 of a yoke 113. The yoke 113 is provided with an arm 116 that co-operates with a roller or rollers 114 adjustably mounted on the paper carriage. When it is desired to add more than " 1 " in the counting section in respect of an amount representing more than one chargeable item, a control key L, Figs. 1 and 3, is depressed to disable the automatic operation of the counting section. The key stem carries a pin 121 which on depression rocks a bell-crank 122 and a pin 123 thereon rocks an arm 124 to cause the cam end 125 to engage a stud 126 on the link 108 whereby the link is raised to move the slide 97 rearwardly. To permit the use of the machine without any counting, a control key N is provided, depression of which, by means of a pin 130 on the end of the stem, rocks the arm 124 to restore the slide 97, the key being held depressed until manually released. A modified form of mechanism for operating the index wire 3 is shown in Fig. 5 for use in machines in which the amount section is used while the carriage is being returned. The arm 91 carries a pin 135 and a cam-shaped lever 136 is freely pivoted on an arm 137 provided with a stud 139 engaged by the cam 96 of the slide 97. When an amount key is depressed the arm 82 is rocked to position the cross-bar 81 directly under the cam surface on lever 136 so that as the carriage finally arrives in the appropriate columnar position the slide is moved forward and the arm 137 is rocked imparting a clockwise movement to the lever 136 to cause the pin 135 to rock the arm 91 and set the index wire 3. British Specification 9102/13, [Class 106 (i)], and U.S.A. Specifications 1,172,484, and 1,580,534 also are referred to.