Patent GB-471364-A (GB)
Abstract: 471,364. Calculating-apparatus. GARDNER CO. March 2, 1936, No. 6324. Convention date, March 9, 1935. [Class 106 (i)] A listing-machine is provided with means for selecting the desired totalizers and for determining the character of the operation to be performed thereon in each of several columnar positions of the transversely movable paper carriage. The invention is shown applied to a machine of the Gardner type with two totalizers 473, Fig. 2, mounted on shafts 403 movable against spring action to engage the totalizer pinions with the differential actuators 610 in timed relation with the movements of the main shaft 301. Each shaft 403 is provided with a pair of cam discs 453, 455, Fig. 3, that co-operate with corresponding cam surfaces- 452, 454 on a pair of interconnected cam plates 419, 421 operatively connected to a rocker device 325 operated by cam arms 320, 316 on the main shaft 301. To set the totalizers for addition the shafts 403 are rotated to set the cams 453 to a position in which the totalizer pinions are in engagement with the actuators when the machine is at rest and are withdrawn during the differential setting movement being engaged during the return stroke of the main shaft. For subtraction the cams 455 are rotated into the path of movement of the cam faces 454. The low points of the cams 453, 455 provide for a non-add adjustment. The additive and subtractive settings may be reversed by depression of a reverse key to adjust the rocker device 325. The settings are also reversed on depression of the total key 278, Fig. 6. The rotation of the shafts 403 to effect the desired registration may be produced manually. For this purpose a lever 1, Figs. 4 and 6, is provided having rollers 4, Figs. 7 and 8, working in cam slots 5, 6, of a pair of segments 7, 8 meshing with pinions 474 having universal joint connections with the shafts 403. The lever 1 is held in any one of its adjusted positions by a detent lever 3, and an auxiliary locating lever 33. For controlling the setting of the totalizers automatically in accordance with the position of the paper carriage according to the present invention concentrically flanged discs 10 11, Figs. 4 and 5, are provided ; these discs are mounted on a stud 12 supported by the carriage spring drum 13 and the flanges 16 are cut away at intervals to form entrance apertures for feelers 19, 20. The feelers are loosely mounted on a shaft 9 and are of U-shaped formation formed with inner arms 21, 22 having bent ends engaging notches in a pair of pawls 23, 24 pivoted on the segments 7, 8. The feelers have extensions carrying rollers 27, yieldingly engaging notches in spring pressed arms 26 pivoted on an operating member in the form of a cam slotted plate 28 adapted to be rocked by engagement with a roller arm 29 on the main shaft 301. The automatic control is rendered inoperative by moving the lever 1 from its carriage control position thereby disengaging the segments 7, 8, from the feelers by reason of the contact of the rollers 4 with the extensions 30, 31, of the pawls 23, 24. The carriage is moved from column to column by the tape 14 under the control of a tabulating device comprising a notched bar and latch mechanism similar to that described in Specification 406,152. The notched bar is rotatable so that work of different sorts and record sheets with differently spaced column may be accommodated, and the set of notched discs is replaced by a corresponding new assembly. Totals printing.-The control lever 1 will be adjusted to its appropriate position for selecting the particular totalizer and depression of the total key will ensure a total taking operation. With the carriage control mechanism in operation the feelers must be stopped in their first position the total being transmitted from one totalizer to the other totalizer which latter will act as a grand total accumulator. The total key when depressed limits the movements of the segments 7, 8, by rocking an arm 206, Fig. 6, to depress a U-shaped stop frame 51 provided with hook ends which are moved into the path of the arms 21, 22 of the feelers 19, 20. When printing values in non- add operations the two denominations to the right of the decimal point are used for designation purposes and the zero printing control must be split for this purpose. The movement of the feelers to their non-add positions through pins 85 rock latches 52 to free an arm 53 secured to a rock shaft 54 which is rocked during an operation and through an arm 55, Figs. 2 and 12, displaces a latch 56 to free it from engagement with a projection 57 on the next lower hammer latch.