Patent GB-247933-A (GB)
Title: Improvements in or relating to cash registers
IPC: G06C7/10
Filed: 1926-02-02
Abstract: 247,933. Japy, A. P., (Assignee of Mabille, E.). Feb. 20, 1925, [Convention date]. Cash registers; differential-mechanism. - The differential. mechanism of a keyset, independentlyoperated machine is of the differential latch-type and is composed as follows : Fast on a shaft d, Figs. 3 and 5, rocked by a crank motion from the driven shaft c is a driving disc 18 grooved to receive the end of a bolt 20 slidably mounted on a plate 19 loose on shaft c. A plate 23 pivoted on plate 19 at 23a carries a oneway plate 22 adapted to co-operate with the ends of the keys. A spring-controlled pawl 24 bears against the plate 23 and is shaped to engage teeth on a fixed disc mounted on the shafts d, m. In the operation of the machine the disc 18 is rocked first counterclockwise and then clockwise. In its downward travel it carries the bolt and plate 19 with it and on the return stroke it drops them at the point where the trip meets a depressed key or a zero plunger 115, the resulting rocking of plate 23 forcing the nose of pawl 24 into locking engagement with the fixed disc. A spring-controlled pawl 28 on the plate 19 trails over a gear wheel 27 on the outward journey but actuates it clockwise during the differential motion on the return stroke. The Specification as open to inspection under Sect. 91 (3) (a) contains also the following subject-matter :- Crank handle drive.-To limit the turn of the crank-handle 31, Fig. 6 (Cancelled), to a complete rotation, a cam 12 geared to rotate once per two turns of the handle co-operates with a plate 6 pivoted at 6a and having its tail engaged by a spring-controlled dog 7. To operate the machine. the crank must be moved backwards slightly to cause a nose 12b on the cam, through a pawl 5, to rock the plate 6 clockwise and so free the shoulder 12a to allow forward rotation of the crank, the plate meanwhile being held displaced by the dog 7. At the end of the driving operation the nose 12b wipes against the lower arm of the plate and restores it to normal position wherein its nose engages the shoulder 12a and thus limits the driving movement. Keyboards.-There are four banks of amount keys and one bank of special control keys allocated to different clerks, departments, or kinds of transaction. The keys are mounted in arcuate plates 79, Fig. 3, and their stems are flanked by spring-influenced curved plates 77, 78 capable of limited downward displacement under the action of a depressed key. Each key stem has a pin 96 projecting through inclined slots 77b, 78b in the plates 77, 78. Each slot 77b has a recess 77a at its outer end to block pins 96 of undepressed keys and the other slot 78b has a portion 78a to receive the pin of the depressed key. The zero trip device consists of a plunger 115 controlled by an inclined slot in the plate 77. The depressed keys are released at the end of the operation by fingers j on a shaft j rocked by a lever 83 from the main shaft l. The lever 83 projects forward through the casing to enable erroneous settings to be. nullified. Printing-mechasnism. - A record-strip passes from a supply roll 67, Fig. 4 (Cancelled), around guide rolls 101, 102 and over an impression roller 107 on a carrier 99 to a winding-on roll 71 stepped for line-spacing by a pawl 72 on the carrier, which is reciprocated vertically twice per cycle through pitman 62 and lever 63 by projections on the main shaft l. The voucher strip passes from a roll 57 between guides 58, 59 and printing and impression rollers 53, 53a and over a knife 61 to the printing line. The printing roller 53 is inked by a roll 54 and the item wheels 50 by a roll 69 carried by a bell-crank rocked by a link 68 attached to the carrier 99. In the first ascent of the latter the item of the previous transaction is printed on the record-strip and in the second ascent the new item is printed on the severed voucher. Transfer-mechanism.-This forms the subjectmatter of Specification 252,375. Zeroizing-mechanism.-The totalizer wheels 30 and their connections are zeroized bv means, of a key which is inserted in one end of shaft g, Figs. 3 and 9 (Cancelled), and turned so as to cause the latter to pick up the various wheels by means of the usual groove and pawl devices. To ensure exact zero positioning of the wheels, the end of the shaft has a disc provided with two pins, one of which 110 normally rests in the notch 108a of a spring-controlled pivoted arm 108. If the key is turned slightly counterclockwise the pin 100 escapes from the notch and the arm rises to block the second pin 110<a>. The key and shalt being then rotated clockwise, the latter pin sweeping along the limb 108<b> restores the arm into position again to receive the pin 110. The zero position of the shaft is further defined by a spring-controlled lever 109 engaging a notch in the disc. Item counters, totalizer-control.-A hand-lever 120, Fig. 18 (Cancelled), when adjusted to any of the notches 121, 121, 123. for " received on account," " charge," and " paid-out " transactions, depresses through a pivoted member 126 a slide 130 having a pin 132, Fig. 19 (Cancelled), adapted to rock a corresponding pivoted arm 146 to thrust a link 135. 136 or 137 into the range of action of an arm 117 on the rotary shaft c. The link thus displaced is accordingly subsequently lowered and actuates the item counter concerned. In order to prevent totalizer-actuation in transactions not involving receipt of money, the pawl 28. Fig. 3., is positively held out of engagement with the actuating wheel 27 by means of a curved arm 150, Fig. 20 (Cancelled), rocked by a roller 148 on the lever 120 when this is adjusted to either of the two lowest positions 122, 123. The above subject-matter does not appear in the Specification as accepted.