Patent GB-260179-A (GB)
Abstract: 260,179. Brewer, G., (Krupp Akt.-Ges., F.). May 25, 1926. Cash register with crank or lever drive. -The various operations of the machine are effected by a driving movement imparted in two stages between which the manual setting and operation of the totalizer have to be effected. In the example described, the hand-lever 13 is first pulled down and allowed to return and then the item is set up by means of the differentially-movable levers 1 after which the lever 13 is again operated to indicate and print the item. Driving-gear. The hand-lever 13, Fig. 9, pivoted at 38 is geared with a sleeve mounted loosely upon the main shaft 23 and formed with a nose 26 co-operating with each of two spring-influenced pawls 27 pivotally carried by a spur-wheel 29 secured to the main shaft. When the hand-lever is pulled down the nose 26 draws along one of the pawls 27 and therefore the spur-wheel and shaft until, when the latter have rotated through 180‹, a pin 48 on the hand-lever meets a pin 34 on the pawl and disengages this from the nose. The handlever may then be released for idle return, the pin 48 having a surface 42 to hold the pawl disengaged until the nose has cleared the recess in the pawl. The hand-lever returns to normal position under spring action and in order to prevent rebound a weighted hook-shaped catch 60 pivoted at 59 is rocked counterclockwise by the impact of the pin 48 so as to seize momentarily a pin 64 on the hand-lever. The downward stroke of the lever is terminated by abutment of a pin 33 on the spur-wheel 29 with a surface 49 and reversal of the operating movement is prevented by a. non-return pawl engaging a gearwheel 51 fixed on the main shaft. Setting-mechanism; totalizer-engagement, controlling. After the first stage of operation the item is set up by means of the levers 1 toothed at 67 to rotate wheels 68. These together with the concomitant mechanism of the totalizer are mounted in a pivoted frame and rocked to engage the wheels 68 with the setting-levers by means of a pitman and a cam groove in gear-wheel 51. This engagement takes place at the end of the first half-rotation of the main shaft, that is, after the first operation of the hand-lever 13, and terminates at the end of the second half-rotation. The setting-levers 1 are justified in position by detents 99 engaging teeth 69 on the levers, and co-operating with these detents is a yoke 102 pivoted on a shaft 46 and rocked by a pitman and another cam groove in gear-wheel 51. During the second operation of the hand-lever 13 the yoke is rocked counterclockwise to lock the detents of the setting-levers but in the first operation the yoke is moved back and not only releases the detents but by engagement with tails 108 positively removes them from the teeth to allow unimpeded restoration of the levers. The setting-levers 1 and therefore also the indicators and type-wheels are restored to normal position during the preliminary stage of operation by the hand-lever 13, by means of roller-bearing arms 127 secured to a shaft 126 geared with the main shaft 23. The rollers 128 on the arms co-operate with edges 130 on the segments 74 connected with the setting-levers and rollers 131 on the segments similarly co-operate with locking-edges 129 on the arms 127. During the first stage of operation these arms rotate and return the segments and connected mechanism to home position, rebound being prevented by the engagement of rollers 131 and edges 129. Differentially-moved indicators; flashes.-The setting movement of the levers 1 is transmitted by gearing to operators' indicating drums 75, Fig. 4, and to customers' indicating drums 2, and a shutter 113, Fig. 5, obscures the latter except when the yoke 102 moves to the left to lock the setting levers and therefore the indicators and type-wheels. One arm of the yoke extends upwardly and by means of a set-screw 110 bears against a pin 111 on the shutter to shift the shutter clockwise against the action of a spring 52. Printing-mechanism. - The item set by the levers 1 is transmitted to type-wheels 3, Figs. 4 and 13, through gear-wheels 81, 82 and nested sleeves 84 and is printed on a record-strip 7 by means of a platen 149 operated by a cam 148 on the main shaft 23. The strip passes from a supply roll 154 to a winding-on roll 155 around guide rollers 159 and an autographic support 160. The guide rollers and roll 154 are supported on a rocking frame 157 pivoted at the axis of roll 155 and adapted to be rocked at each operation by a pitman and cam on the main shaft, so as to bring the last imprint to the inspection window and autographic slot and then to position the next line at the printing point. The strip is line-spaced at each rocking movement of the frame by a feed pawl 163 carried by the frame and reciprocated by a pin and fixed cam-slot 169. A shutter 181 is connected at 161 with the frame 157 to close the inspection window and writing-slot except between the two stages of operation. Drawer interlocks.-The spring-impelled drawer is normally locked by a lever 135, Fig. 5, the upper end 136 of which co-operates with a cam 145 on the main shaft. During the second stage of operation the lever is rocked to release the drawer and the end 136 is then engaged by a shoulder 146 on the cam so as to prevent another operation of the machine until the drawer has been fully closed again to free the lever from the shoulder.