Patent GB-499027-A (GB)
Abstract: 499,027. Calculating-apparatus. UNDERWOOD ELLIOTT FISHER CO. June 14, 1937, No. 16505. Convention date, June 30, 1936. [Class 106 (i)] In a machine having a travelling paper carriage, two groups of totalizers, and mechanism actuated by the carriage when moved in the tabulating direction for conditioning a totalizer of one of the groups for operation, the operation of a totalizer according to the present invention is effected under the joint control of a selecting mechanism and a conditioning mechanism which permits the selected totalizer of one group only to be effective. The invention is shown applied to a Sundstrand type of machine as described in Specification 401,904. The machine described has two main totalizers 11, 12, Fig. 2 and an upper and lower group of auxiliary totalizers A, B, C and D. The means for selecting, engaging and actuating the totalizers in the upper group as well as the means for non-adding, taking a total or sub-total is similar to that described in the above mentioned Specification. Lower group of totalizers.-The bails 31-34 Figs. 3 and 4, which are rocked by the selection keys A-D and control the upper engaging links 41-44, are connected by links 153-156 to engaging links 161-164 for the lower group of totalizers. To render one of these effective to engage a totalizer of the lower group to the exclusion of the corresponding totalizer of the upper group a "Lower Group" key LG is provided. This key co-operates with a bail 175 to control a slide 176 having an arm 177 operatively connected to a bail 181 and arm 183. The arm 183 engages an aperture in a slide 188, Figs. 3 and 7, that is connected by a link 193 and arm 194 to a similar slide 196. In the normal position as shown in Fig. 7, shoulders on the upper slide 188 lie a sufficient distance above the ends of the engaging links 41-44 to allow a selected one to rise during an operation for engaging an upper totalizer; the shoulders on the lower slide lie in contact with the engaging links 161-164. Depression of one of the selection keys A to D alone will raise the corresponding link 35 to 38 as well as one of the links 153 to 156 to free the corresponding engaging links 41 to 44 and 161-164. During the operation the upper totalizer only will be selected as the spring 202 holds the slide 196 in position to prevent lifting of the lower engaging links when the known control plates 49 and 207, Fig. 5, are moved rearwardly to place the studs thereon over the notches in the links. To engage one of the lower totalizers the " Lower Group" key and the appropriate selection key are depressed. By depression of the first key the spring 187 connecting the bail 181 and arm 183 is tensioned so that when the selection key is depressed and the machine operated the slide 188 is lowered and the slide 196 is raised to allow the appropriate link 161 to 164 to rise so that the totalizer will be engaged with the actuator racks 18 at the proper time. The cam lever 204 which effects the engagement is connected by a link 203 to the upper cam lever 77 that is operated by the pendant 75 and plate 72 under control of the arm 65 on the main shaft 15. The arm 65 operates a cam lever 115 carrying a bail 114 that controls the movement of spring controlled levers 111, 121 operatively connected to the main actuators 105 and actuator racks 17 respectively. The actuators 105 are connected to auxiliary actuators 228 that are operatively connected to the actuator racks 18. The operations of adding non-adding, total taking and subtotal taking in the lower group are identical with those for the upper group except that the " Lower Group" key must be depressed. In total taking operations a blank cycle is necessary to engage the totalizer otherwise the total key will be locked against depression. By the engagement movement of one of the links 41 to 44 and 161 to 164 with plates 242, 243 of a bracket assembly 238, Fig. 9, pivoted on a vertical axis, the bracket is rocked to remove a projection on an arm 255 of the bracket from the path of a pin 149 on a slide 143 to permit the total key to be depressed. Main totalizers. The engagement of the upper totalizer 11 with the actuator racks 261 or 262 is effected in a manner similar to that described in the above-mentioned Specification. An arm 316, Fig. 15, on the main shaft rocks a plate 322 to raise a pendant 336 and lower a pendant 342 which rocks a lever 346 to raise a link 348 and oscillate a rocker 308. The rocker 308, by means of a link 305, Fig. 14, lowers a cam lever 314 operatively connected to a pitman 355 connected to the totalizer shaft. To engage the lower totalizer 12 a stud 352 on the rocker 308 engages a notch 392 in a link 385 connected to a cam lever 387, lever 408 and pitman 356. The totalizers 11, 12 are selectively controlled by a lever 265, Fig. 10, movable to any one of three positions. In the position shown in Fig. 10, the upper totalizer will be engaged, in the intermediate position both totalizers will be engaged, and in the rear position the lower totalizer will be engaged. To the lower end of the lever 265 is pivoted a slide 274 carrying a blocking plate 277 which presents a projection 284 to a stud 285 on a bail member 287. When the main shaft is operated a short arm 291, through a link 292 rocks a lever 295 the lower end of which bears against the bail 287 ; movement of the lever 295 away from the bail 287 frees the bail but the projection 284 holds it against movement so that a stud 304 on the link 305, Fig. 14, is maintained at the end of the slot of a link 301 pivoted to the bail and maintains the notch 306 in the link in engagement with the pin 307 on the rocker 308. When the lever 265 is moved to the mid-position for joint selection the projection 284 moves away from the stud 285 so that when the machine is operated the bail 287 will be permitted to rock to move the link 301 until the rear end of its slot engages the stud 304. In this position the upper totalizer will be engaged as before when the machine is operated, and an arm 377 with a roller 376, Fig. 14, on the main shaft 15 will rock the arms 373, 374 of a bail member 371 to pull a link 383 forward to engage the notch 392 with the stud 352 to ensure the engagement of the lower totalizer. To restrain this mechanism when the lever 265 is in its forward position for selecting the upper totalizer alone a hook 393, Fig. 10, engages a stud 395 on the arm 373 and prevents forward movement of the arms and link 383. In the mid position of lever 265 a stud 406 on the slide 274 engages the shoulder of a pitman 397 connected to the hook 393 which is thereby freed to release the arms 373, 374. To select the lower totalizer alone the lever 265 is moved to the rear and upon operation of the machine the bail 287 rocks a sufficient amount to cause the link 301 to displace the link 305 and disengage the notch 306 from the stud 307 thereby leaving the upper totalizer disengaged. When it is desired to subtract depression of the subtract key moves a slide 416, Fig. 19, forwardly to tension springs 422. 426 and upon operation of the machine arms 421, 427 of a bail 417 rocks to displace the rocker 346 to permit the stud 351 to enter notch 432. On the return stroke of the shaft 15 with the parts in this position the cam levers 314, 387 will be lowered instead of being raised as in addition operations. To add in the upper totalizer and simultaneously subtract in the lower totalizer a " Plus and Minus " key, Fig. 14, is provided depression of which, through a spring 434 and bell-crank 433, rocks the bail 371 and arms 373, 374 to displace the links 383, 385 rearwardly to bring stud 307 into engagement with notch 442 so that when this stud is raised, both links 305, 385 being engaged, the cam lever 314 will rise for addition, and the cam lever 387 will fall for subtraction. If the subtract key is depressed with the " Plus and Minus" key the stud 307 will be lowered instead of raised, causing subtraction in the upper totalizer and addition in the lower totalizer. Totals and sub-totals. Regarding the upper totalizer 11 the selecting lever 265 is moved to its forward position and the machine given a blank cycle of operation. The change of timing of the engaging mechanism is controlled by the total key which co-operates with a slide 445, Fig. 20, connected by means of a spring 454 to a bail member 448 itself connected by a link 456 to 'a pendant 336. This pendant co-operates with pins or studs on the plate 322 and operates in the manner described in the above mentioned Specification. In sub-total taking operations the sub-total key is depressed and imparts its movement to the total key as shown in Fig. 22 by means of the links 468, 471 and a cross-piece 472. Thus both slides 445 and 462 are moved to change the timing and to set the arms of a bail member 466, Fig. 21, so as to allow the totalizer to remain engaged during the return movement of the actuating racks. Totals and sub-totals can be taken from the lower totalizer by setting the lever 265 in its rear position and using the total and sub-total key in the manner explained. If the selecting lever 265 is in its intermediate position means are provided to take a total from the upper totalizer and disengage the lower totalizer. This means includes a laterally movable slide 483 that co-operates with a bar 474 attached to the arm 373. If amount keys are depressed the slide 483 will be displaced to allow bar 474 and arms 373, 374 to move ; if a total is to be taken the blank cycle is executed with the bar 474 held against movement by the slide 483 so that the lower totalizer will be disengaged. The bar 474 is lowered to an inoperative position when the selecting lever 265 is set in its rear position. To ensure that the lever 265 is in position to select the totalizer that was left engaged at the end of the preceding operation the total and sub-total keys are locked by means of a latch 487, Fig. 32,