Patent GB-375780-A (GB)
Abstract: 375,780. Cash registers &c. NATIONAL CASH REGISTER CO., Dayton, Ohio, U.S.A.-(Assignees of Brand, S. ; 144, Forrer Boulevard, Dayton, Ohio, U.S.A.). March 23, 1931, No. 8947. Convention date, March 22, 1930. [Class 106 (i).] In a key-set, multiple-totalizer machine the totalizer-selecting differential-mechanism of a divided keybank makes two excursions in one complete operation of the machine, the first excursion selecting a totalizer according to the depressed key of one division of the bank and the second selecting a totalizer corresponding with the key depressed in the other division. The invention is set forth as embodied in the Shipley type of machine described in Specifications 8119/15, 176,781, 191,351, 208,705, 220,643 and 227,861, [all in Class 106 (i), Calculating &c.]. Divided bank. This as shown in Fig. 4 comprises five transaction keys 32 and four clerk's keys 37 and the corresponding totalizers are arranged on the back and front lines and are selected in the usual manner by cam slots in a slide 307 differentially positioned by the link 252 controlled from the differential 204 of the divided bank. The latch 203, Fig. 8, of this differential is supported by the usual bellcrank lever 205 but co-axial with this lever is an arm 209 capable of limited rotation with respect to the lever 205. In the home position the parts are as shown, a pin 218 on the arm resting in a forked lever 223 linked with a shaft 233 controlled by the driving control mechanism. In the operation of the machine the main shaft 122 makes two rotations instead of one and in the first of these the differential travels up the bank until the latch is broken by engagement of the arm 209 with the depressed transaction key. At the beginning of the second rotation the shaft 233 is rocked counterclockwise and through the link 230 rocks the arm 209 clockwise to throw it out of action. Consequently in the second excursion of the differential the latch is broken by the bell-crank lever 205 meeting the depressed clerk's key and the clerk's totalizer is therefore positioned for receiving the amount set up. A fixed rail 220 ensures the maintenance of the arm 209 in set position throughout the travel of the differential. Indicators. These are of the type described in Specification 8120/15, [Class 106 (i), Calculating &c.], the transaction tablets 266,267 and the similar clerk's tablets being carried in frames differentially positioned by the link 252. This link is pivoted to a sector 253 gearing with the clerk's frame and connected through a spring 258 with a similar sector 257 meshing with teeth on the transaction frame. In the first excursion of the differential the transaction frame is set by the link 252 acting through the spring and is then locked by the usual aligner 180. In the second excursion a special aligner 280 controlled synchronously with shaft 233 is engaged with the transaction sector 257 to lock it while the clerk's frame is positioned, the spring 258 allowing independent setting of the sector 253 despite the locking of sector 257. Multiple-item transactions. When the multiple-item key 34, Fig. 10, is depressed the totalizer on the upper line is thrown into engagement in order to accumulate the items of the transaction. The disc 384 exercises an automatic control over the clerk's and transaction totalizers by virtue of high spots in cooperation with the pins 382, 383 on the floating arms 365, 369. There is no high spot for the upper line but an arm 415 controlled by the link 423 from the key 34 determines whether the totalizer shall be engaged or not. In order to prevent re-engagement during the second rotation of the main shaft a connection 426 with the special aligner 280 displaces the arm 415 to prevent the engagement. Total-taking. The machine can normally only be released for operation after depression of both a transaction key and a clerk's key, owing to the lock imposed on the release shaft 60 by the detents 81, 84, Fig. 14, of the bank. In a sub-total or total-taking operation (other than a multiple-item total-taking), however, the detents are locked together to move as one so that depression of either a clerk's or a transaction key will suffice in conjunction with the motor key for releasing the machine. To effect this connection a pawl 431 pivoted on one detent is allowed to enter a notch in the other detent whenever the total lever 35 is moved to any position, other than add and multiple-item total, a slot 435 rocking a lever 434 to allow a spring to shift the pawl into operative engagement. Moreover in total or sub-total taking, the latch arm 209 must not be disabled and therefore a stud 441 is provided on the lever 434 to block an arm 443 to prevent the lever 223 from being rocked by the shaft 233.