Patent GB-330292-A (GB)
Title: Improvements in cash registers
IPC: G06C7/10
Filed: 1929-03-01
Abstract: 330,292. Bilde, T. E. D., and Lindvall, S. E. March 1, 1928, [Convention date]. Divided on 307,030. Cash registers with operating-means. - In a key-set, independently-operated machine the actuators directly engage the indicators and the totalizer and may be rigidly connected with type wheels. The depression of keys partially frees the actuators but these are not completely released until the main shaft is rotated, whereupon the actuators set in the previous operation are returned to home position to add the previous item and are then allowed to take up the new setting. The keys 9 have each two notches 13, 14 of different depths to co-operate with toothed segments 17. When a key is depressed the segment concerned is displaced clockwise and through a notch 19 rocks a spring-controlled pawl 21 counterclockwise to free a projection 23 belonging to the corresponding actuator 26. During the first quarter revolution of the main shaft a disc 73, Fig. 7, fixed to it takes along a loose disc 74 by means of a slidable pin 78 until a recess 79 in a stationary disc 75 is reached whereupon the pin slides to the left and frees the disc 74 from the shaft. The disc 74 while being rotated with the shaft carries back any actuators 26, set in the previous operation, to home position by means of an universal bar 83 and during this movement the totalizer is in mesh with the actuators due to the lowering of a slide-bar 43 by a cam-groove in the disc 85 fixed to the main shaft. The totalizer frame pivoted at 5 is extended at 49 to carry a pin 50 co-operating with recesses 64, 65 in the bar for controlling the totalizer engagement. Another recess 42 in the bar is adapted to rock a locking-bail 37 to effect the final release of the actuators prior to their restoration by the bar 83. When the clutch device 73, 78, 79 acts to liberate the disc 74, springs 44 secured between the zero stop pawls 21 and the actuators and further stressed by the restoration of the latter to zero effect the counterclockwise rotation of the actuators until these are stopped by abutment of oneway pawls 84 against depressed keys. The bar 43 when lowered also permits the opening of the cash drawer through lugs 68, 69 on the bar and drawer respectively. The depressed keys are released at the end of the operation by engagement of a pin 90, Fig. 3, on the cam disc 85 with an arm 91 fixed to shaft 7 grooved to receive pins on the zero stop pawls. The rocking of this shaft consequently displaces the segments 17 to free the keys and finally the pawls return to normal locking position under the action of their springs. Differentially-moved indicators; flashes.-The drums 31 are set by the actuators 26 and their numerals are normally visible through windows 34, 35 and openings in a masking plate 32. When the machine is under operation, the lowering of the bar 43 rocks the plate to obscure the numerals until at the end of the cycle the bar is fully raised and the plate restored to expose the new reading. Transfer-mechanism. - At transfer the lower wheel, through a pin 56, Fig. 12, turns a fourtoothed Geneva wheel 54 through 90‹ and thus tensions a spring 58, Fig. 11, connecting this wheel with a four-lobed plate 59, prevented from movement at this time by engagement with a stationary bar 61. When the totalizer moves out of engagement with the actuators, the plate 59 is free to rotate under the action of the tensioned spring to effect the transfer.