Patent GB-1132214-A (GB)
Title: Improvements in or relating to cash registers and like adding machines
IPC: G06C7/00
Filed: 1966-03-02
Abstract: 1,132,214. Cash registers. H. GROSS, and S. GROSS. 17 Feb., 1967 [2 March, 1966], No. 9134/66. Heading G4T. A cash register or like adding machine comprising a totalizer 28 having toothed adding wheels 27 actuated by racks 16 differentially set by amount keys 10, is characterized by a " TOTAL" key 11 which actuates the machine for two successive cycles on being depressed, following actuation of the amount keys, during the first cycle an amount set up on the keyboard being entered in the totalizer and during the second cycle the total taken from the totalizer and the latter zeroized. The machine includes a " LIST " key 40 operating the machine for one cycle to transfer an amount set up on the keyboard to the totalizer. The totalizer 28 is pivoted at 29 and includes a laterally movable cam follower 34. When the follower is positioned to co-operate with cam 31, the totalizer is moved to engage racks 16 during their return movement whereby an amount is entered in the totalizer. When the follower is positioned to co-operate with cam 32, the totalizer is moved to engage the racks during their forward movement whereby the total is taken from the totalizer and the wheels 27 zeroized. The racks drive type wheels 36 for printing the individual amounts and total. The " LIST " key is connected to a slave member 46 through a spring 49. A spring-loaded lever 52 engages a notch 47 in the slave member to latch the " LIST " key and slave member in their depressed state. The lever 52 co-operates with a stud 55 on slide 56 whereby the slide is moved to the left on actuation of the " LIST " key. The slide 56 rocks a pawl 63 to disengage a shoulder 64 on member 65. This engages a clutch operating the machine for one cycle. A member 99 is rocked counterclockwise on operation of an amount key 10 to overlie a total lever 93 and prevent the total lever following a cam 69. Cam means return the member 65 and total lever 93 to their rest positions to disengage the clutch. In addition, a latch plate 13 is operated to free the amount keys. The lever 52 is rocked counter-clockwise to disengage notch 47 and enable the slave member and " LIST " key to return to the upper position. Depression of the " TOTAL " key 41 operates toggles 105, 108 to depress the " LIST " key also. Pawls 86, 87 engage notches 84, 85 to hold the " TOTAL " key depressed. Operation of the " LIST " key actuates the machine for one cycle as described above. Towards the end of the cycle, the slave member is returned to its upper position by a cam 75 to actuate the member 65 disabling the clutch. The cam means release the depressed amount keys and the pivoted member 99 is moved clear of the total lever 93. The cam 75 continues moving, due to its momentum, to permit the slave member to return to its lowered position and re-engage the clutch for a second cycle. The total lever 93 is now free to follow the cam 96 and position the follower 34 opposite cam 32. Sub-totalling is effected without zeroizing the totalizer by depressing " LIST " key 40 when the amount keys are in their raised position. In this case, follower 34 moves to engage first cam 32 then cam 31 so that the wheels 27 co-operate with the racks 16 during both the forward and return movements.