Patent GB-191508122-A (GB)
Title: Improvements in and relating to Differential Actuating, Totalizer Engaging and Transfer, or Carrying Over Mechanism for Cash Registers and the like.
Inventor: HADDAN ALFRED JOHN HENRY
IPC: G06C7/10
Filed: 1915-06-01
Abstract: 8122. Haddan, A. J. H., [National Cash Register Co.]. June 1. Cash registers.-A keyoperated cash register has differential segments which are operated by slots of varying inclinations of the key-levers and are adapted to give an additional movement to the totalizers to effect transfer. The machine has also means for controlling the engagement of the totalizers with the toothed segments and for actuating the indicators so that they pass from one reading to another without returning to normal position, and. has the totalizer-selecting and totals indicating and printing apparatus described in Specification 14,604/15 and 14,605/15. Differential mechanism.-The slots 4 of varying inclinations in the key-levers of each bank engage a bail 5, the end frames 6 of which are connected by links 8 to the segments 11. The usual key-coupler 17 prevents the depression of further keys, and zero stops 20 for the bails 5 are removed by shoulders 67 on the key-levers. The segments 11 carry also segments 12 capable of relative movement to effect transfer in the manner described below. Differentially-moved indicators.-The indicator drums 45 are actuated by segments 52, positioned from the differential segments 11 through beams 47 connected by links 48 to arms 49 fast to shafts 50, short links 51 connecting the arms 49 to the segments 52. The lower end 64 of each beam 47 is unmoved until it is engaged by a cam 58 mounted upon a shaft 26 rocked by the key-coupler 17, the movement given to each indicator thus being direct from one reading to the next. A detent pawl 65 for the indicators is controlled by the totalizer-engaging mechanism. T o t a l i z i n g-c o u n t e r s.-The totalizers 13 are mounted upon a shaft 76 carried by a frame 41, Fig. 6, which is so controlled as to rock the totalizers out of mesh with the segments 11, Fig. 1, at the beginning of each operation and so maintain them during the differential positioning of the actuating-segments, after which the selected totalizer is engaged therewith for the remainder of the operation. The key-coupler is connected to an arm 92 carrying cams 114, 116, which operate a spring-pressed arm 94 adapted to engage pins 98 or 99 upon a spider 100 ; an arm 103 of this spider has a forked end engaging a pin 105 carried by an arm 106 pivoted to the totalizer shaft 76. This pin is also controlled by mechanism described in Specification 14,604/15. Transfer mechanism.-The movable portion 12 of each actuating-segment 11 is normally urged by a spring 28 to press against the main portion ; but when no transfer is to take place, an arm 29 abuts against the movable portion to prevent its participation in the final unit movement of the main portion. At transfer, a pin 32, Figs. 2 and 3, rocks a lever 30 of the next higher denomination and moves the corresponding arm 29 out of contact with the segment 12, thus allowing the movable part of the actuating-segment to share in the full movement and effect the transfer. The transfer trip lever 30 is held in its tripped position by a spring-pressed pawl 35, Fig. 2, provided with two notches 36, 37 coacting with a pin 38 on the lever 30. The tripped transfer devices are returned to normal position at the beginning of the next operation.