Patent GB-191506218-A (GB)
Title: Improvements in Cash Registers, Calculating Machines or the like.
Inventor: HADDAN REGINALD
Filed: 1915-04-26
Abstract: 6218. Haddan, R., [National Cash Register Co.]. April 26. Adding - apparatus; cash registers; printing totals; distinguishing - marks.-In manually - set independently - operated totalizing-registers typecarriers are provided with corresponding and distinguishable item and total type - characters, impressions from which may be taken one below the other. The total-printing mechanism acts by automatically depressing keys to the value of the total and then printing by the normal sequence of operations. The machine is of the type described in Specification 9400/97, and comprises segments 2 for each bank of keys mounted loosely on a shaft 3 and gearing with wheels 4, which rotate the indicators 6. Each wheel 4 also gears with a pinion 8, Fig. 5, loose on a sleeve 11, which surrounds a shaft 12 and has secured to it a pinion 10 and a total-registering wheel 14 Fixed to the wheel 8 is a pinion 9 adapted to be coupled to the pinion 10 by a wider pinion 15 mounted on a rocker 16. This is rocked by a link 18 forked to embrace a spindle 21 which is rotated by the operating crank, and to which is fixed a disk 22 having a cam-groove 23 engaging a pin 24 on the link 18. The pinions 4 are secured on a series of nested sleeves 40, which also bear at their outer ends type-carriers 41 fitted with large and small type 42, 43, arranged alternately, to print respectively totals and items. The record-strip 54 is fed from a roll 59, loose on a spindle 60, over pins 58 to a feed roll 59<a>. A link 63, having slots 64, 65 embracing the spindle 60 and the sleeves 40, is fitted with a roller 68 co-operating with a cam 67 to oscillate the link 63. This motion, by ratchet mechanism 61, 66, rotates the spindle 60 and thence, through gear-wheels 62, 118, 117, 61<a>, 60<a>, the feed-roll 59<a>. The inking- ribbon 113 is simultaneously shifted by passing it round a felt roller 115 and guide-pins 114. Printing is effected by one of two platen levers 44, 45, which are operated respectively for the item or total printing ; they are pivoted at 46 and actuated by a cam 52 against the pull of springs 53. When it is required to print a total, a spindle 73 is rocked by a hand-operated crank to an extent determined by the abutment of a lug 110 against a stop 111 ; this movement, by means of cranks 74, 75, connecting- rods 76, and cams 78, serves to draw inwardly bars 34, one for each bank of keys. The bars embrace the shaft 3 by means of slots 35 and are pressed outwardly by springs 37 between the ends of the slots and bearing-blocks 36. The angular position of each bar is determined by a cam-groove 26 in a disk 25 rotating with the corresponding registerwheel 14 ; the groove co-operates with a pin 27 to slide a rod 28, which, by a pin 32 projecting into a slot 33, raises the arm 34 to a position opposite the key 1 which corresponds to the indication on the register-wheel 14. When, therefore, the arm is drawn inwards by the contact of a roller 79 on it with the cam 78, a flange 38 bears on a pin 39 and depresses the key. The main operating-crank is then rotated, and the printing-sectors 41 thereby set to represent the total required. In order that the impression may be taken from the large type 42, the platen 45, which is normally held out of action by a bar 55, must be operated and the platen 44 rendered inactive. This is accomplished by a cam 81 on the spindle 73 raising a frame 80, which removes the bar 55 from opposite the arm 48 on the platen 45 to a position opposite the arm 48 on the platen 44. The frame 80 is held raised by a spring latch 84, which engages a fixed projection 87 and is released by a lug 89. A pawl 88<a> on the frame 80 shifts the record-strip an extra space to bring the correct printing position opposite the large type 42. To prevent the total represented by the automatically-depressed keys from being added to that on the register-wheels 14, a slot-andpin connexion 19, 20 between the link 18 and rocker 16 is disengaged by the following means. A pin 91 on one of the connecting-rods 76 encounters a shoul der 92 on a link 93, thereby rocking an arm 94 pivoted at 101. Moving with this is another arm 102 having a lug 103, which is now in the path of a cam 105 carried by the rock-shaft 3 ; by this means, the arm 94 is rocked still farther to raise the link 18, and is held in this position by a latching- plunger 97 which springs over the shoulder 92 and is subsequently released by a cam 106 on the spindle 21, the arm 94 being returned by a spring 99.