Patent GB-550097-A (GB)
Title: Improvements in and relating to cash registers and like calculating machines
IPC: G06C7/10
Filed: 1939-12-11
Abstract: 550,097. Cash registers. KOOPERATIVE FORBUNDET FORENING U.P.A. Dec. 11, 1939, No. 31946. Convention date, Dec. 20, 1938. [Class 106 (i)] A cash register or like calculating machine provided with depressible keys, of the kind in which the totalizer is movable in such a manner relatively to the differential setting members of the machine that the totalizer wheels are adapted to be put into and out of driving mesh with the differential setting members by means of motion transmitting members divided into two systems, one system being adapted to co-operate with cams and the other being united with the totalizer and adapted to be connected to and disconnected from the first-mentioned system by means of a coupling member adjustable to two positions, said coupling member, in one of the positions, connecting, and in the other position disconnecting the two systems, is characterized in that the coupling member is adapted to co-operate with a stationary stop member in such a manner that the coupling member in operative position is positively forced by the stop member to connect the two systems, the totalizer being thereby forced into engagement with the differential setting members, and in inoperative position strikes against the stop member, thereby being prevented from participating in the motion of that system which is driven by cams. As shown in Fig. 1, when the keys are depressed, projection 6 is rocked sideways to release projections 4 on differential setting racks 3 which are then moved upwards by spring-actuated arms 5 into positions corresponding to the entered amount. If one of the keys " In " or " * " has been depressed, projection 44 strikes or locks pin 42 to hold lever 41 in the position shown and to prevent depression of the " Cr " or " Out " keys. Lever 41 positions levers 36 and 32, the latter having hook-shaped portions 33 engaging pins 34 on link member 22. When the machine starts its working stroke, the illustrated rack 3 assumes a position corresponding to " In " " or " * " and cams 21 rock levers 20 and through links 22 and 26 and levers 28 bring coupling wheels 17 into engagement with differential setting racks 3 and indicator racks 11, while pins 34 on link members 22 take along coupling members 32 and therefore sledges 15 to bring the totalizer wheels 1 into engagement with the totalizer actuating racks 10. Cam operated arms 8 then rock downwards to return the differential setting racks 3 to initial position, during which movement the totalizers 1, indicators 12, 13 and toothed wheels 14 for setting the printing wheels are rotated. The indicators are returned to zero at the beginning of each working stroke, when arms 8 move upwards and lift the indicator racks 11 into zero position, from which position they are moved when coupling wheels 17 connect them to racks 3. After racks 3 reach their initial position, printing takes place. Levers 20 then return to original position tn restore the remaining parts to initial position. If key " Cr " or " Out " is depressed, lever 41 is rocked counter-clockwise and the hook-shaped portions 33 of coupling members 32 do not engage pins 34, so that when links 22 are displaced as described above, the portions 33 abut against shaft 27, positively preventing engagement of the totalizer wheels 1. The coupling wheels 17 engage racks 3 and 11 as before so that the indicating and printing mechanisms are operated. Reference is made to Specification 378,931. The Specification as open to inspection under Sect. 91 also comprised the following subjectmatter. The type setting wheels 51 (Fig. 5, Cancelled), are in constant mesh with the differential setting segments 53 rockable by levers 50. Normally, pins 64 on spring-pressed arms 66 hold coupling members 60 in the position shown, so that pins 62 on levers 58 are located in legs 61a of slots 61 in coupling members 60. Hence, if the transaction lever 50 is moved to " In " or " *", cams 70 at the working stroke of the machine rock levers 58 clockwise and through members 60 rock plates 57 to bring totalizer wheels 55 into mesh with the segments 53. When the transaction lever 50 is moved to " Cr " or " Out a a projection 69 engages shaft 67 and forces arm 66 counter-clockwise so that coupling members 60 are rocked clockwise and abut against shaft 65 preventing any movement of the totalizer frame 57. The pins 62 are positioned in the angle of slots 61 and when levers 58 are rocked by cams 70, pins 62 traverse the other leg of siots 61. 1. Levers 58 are guided laterally by their projections 72 running in guide pins 73. This subject-matter does not appear in the Specification as accepted.