Patent GB-190917214-A (GB)
Title: Improvements in the Actuating Devices of Cash Registers with One Row of Keys.
Inventor: PISCICELLI ROBERTO TAEGGI
IPC: G06C7/10
Filed: 1909-07-23
Granted: 1910-07-25
Abstract: 17,214. Piscicelli, Count R. T. July 23. Cash-registers with operating-means.-In key-set lever-operated machines a single bank of keys is employed, upon which the item is set, beginning at the highest denomination; the depression of a key determines the displacement of a differential sector of some one denomination, and also couples the keyboard to the sector of next lower order, the displaced sectors simultaneously setting the operator's item - indicating drums. One sector may be assigned to registration of the department. Upon the operation of the main lever, differential actuating - mechanism of the pin-wheel and cam-disk variety is first set according to the positions of the sectors and is subsequently caused to actuate t h e totalizer and the customer's indicator drums, after which the sectors and denomination-selecting parts are re-set. A correcting lever is provided, and likewise printing, drawer - controlling, and totalizer-t r a n s f e r parts of ordinary construction. Selecting denomination; differential mechanism.- The depression of any key-lever 8, Fig. 1, and simultaneous raising of a universal bar 17 effects a one-twelfth rotation of the selecting shaft 16, and a similar movement takes place during the return of the key, whereby the helically-disposed cams 27 release in turn the retaining-pawls 37 of the differential sectors 31, which move forward until arrested by a transverse bar 12 carried by the operated key - lever. To prevent inaccuracies arising upon successive depression of the same key, a special arresting member 39 is pivoted to each sector, and is of such a length that upon the lowering of the raised bar 12 the sector moves forwards slightly until arrested by the re-engaged pawl 37. Operator's indicator.-The sectors are.controlled by springs and are loosely mounted upon a shaft 13. Forwardly-projecting arms 99 co-operate with the differential - actuating mechanism, and toothed segments 33 at their upper ends set the operator's setting-indicator 43, the drums of which are provided with detents 45 to prevent rebound of released sectors. Error-levers.-Fig. 9 shows a lever 49 by the depression of which, before the main lever has been operated, the results of incorrect setting upon the keyboard may be obliterated. A segment 51 and mutilated wheel 54 restore the denominationselecting shaft 16 to original position, and the plate 61 simultaneously locks the keyboard by means of the universal bar. Another segment 60 rotates the shaft 13 and therewith a yoke 56, engaging with and restoring rearward arms upon displaced sectors, and also an arm 57 which lifts the detents 45 from the operator's setting-indicator. Differential mechanism; interlocking.-Two complete rotations of the main handle are necessary to effect a single rotation of a main shaft 50, and thus to operate the machine. For each denomination there is a pin-wheel 90, Fig. 14, fast upon the main shaft, and provided with a cam disk 91 having projections 98, Fig. 1, thereon adapted to contact with the forwardly-projecting arms 99 of the sector, if displaced, and to be arrested thereby, and to be rotated relatively to the corresponding pin-wheel, during such time as the sector is being reset by the engagement of a segment upon the main shaft with a train of wheels ending in mutilated gear-wheels fast to the drum of the operator's setting-indicator. The relative movement of each cam-disk and pinwheel is thus proportional to the extent of displacement of the corresponding sector, and determines the number of actuating-pins 95 protruded from the wheel, and thereby the differential actuation both of the pinions 103, Fig. 22, which transmit movement to the customer's indicator 104, and of the receiving-pinions 100 of the totalizer 101. The continued rotation of the main shaft causes, through the co-operation of the cam 108 and double-armed lever 107, 106 with the projections 98, a withdrawal of the actuating-pins. Notched disks, upon the denomination-selecting shaft 16 and upon one of the shafts of the main-handle train, effect an interlock between the key board and the main handle. Drum indicators; flashes; zeroizing-mechanism.- Fig. 28 shows a cam 171 upon the main shaft, co-operating with a lever 168 to displace the flash 164 whenever the main handle is in the normal position. At such times a detent 162 is positively engaged with detent wheels upon the indicator drums through the agency of a cam 159 driven by the handle mechanism. The drums have chain transmission 143, Fig. 22, from their receiving pinions 103, each of which is zeroized at the beginning of the main-shaft movement, by a sector 145, Fig. 26, on the corresponding pin-wheel engaging with a mutilated pinion 144. An associated cam 150 and lever 149 throw an arm 147 into the path of a stop-tooth 152. Overthrow-preventing mechanism.-Upon the pinwheels are adjusted blocks 154, Fig. 27, whereby, at the end of the actuation of each indicator receiving-pinion 103, a lever 153 is raised, and a detent 155 thrown into gear with the pinion.