Patent GB-468660-A (GB)
Abstract: 468,660. Calculating - apparatus. TRIGGS, W. W. (Underwood Elliott Fisher Co.) Sept. 29, 1936, No. 26443. [Class 106 (i)] In a machine having a laterally movable paper carriage and a member controlling the carriage return mechanism, devices are provided which are independently adapted to coact with the control member to determine the position from which the carriage shall be returned so that debit and credit balances shall be printed in off-set columns, and mechanism is provided responsive to the character of the total in the totalizer to determine which of the devices shall coact with the control member. The 0 invention is shown applied to a Sundstrand machine with a carriage 1, Figs. 1, 2 and 3, having a pivoted control plate 2 with pins 4 co-operating with pins and slides in a housing 5A to control certain functions of the machine. On the carriage is a bar 9 with adjustable stops 10, 19 ; when the stop 10 is in operative position and printing of a positive total has been effected in the debit column position, the carriage is released for a slight additional movement to the left, whereupon the stop 10 engages a projection 11 on the end of a latch lever 6 which rocks to initiate the operation of the carriage return mechanism. If the totalizer is in an overdraft condition and a negative total exist, the stop 10 is withdrawn from position to engage the projection 11 and the carriage can tabulate to the credit column position so that when printing has been effected the projection 11 will engage the stop 19 to rock the carriage control lever 6. The position of the stop 10 is dependent upon the character of the total in the totalizer and is controlled by the pawl 218e, Fig. 6, which is tripped to introduce the " fugitive one " when the totalizer passes from a positive to a negative condition. This pawl pushes a link 1087 rearwardly and rocks a plate 1090 connected thereto. Rigid with the plate 1090 is an arm 1092 with an extension 1093, Fig. 7, that is pivoted to the end of a stop arm 1083, Figs. 1 and 2 so arranged that when the " fugitive one is introduced the arm 1083 is moved from the position of Fig. 1 to that of Fig. 2. This movement displaces the shoulder 1085 away from a lug 24 on an arm 23 pivoted on an axis 17 ; this arm which is connected to a spring- controlled link 20 is thereupon rocked and the lug 24 by contact with a lug 25 on a lever 16 pivoted on the axis 17 rocks the lever 16 and therewith the stop 10 to its inoperative position as shown in Fig. 2. When the totalizer again passes to a positive condition the rear pawl 218e returns the link 1087 and restores the arm. 1083 to Fig. 1 position where the shoulder 1085 blocks the movement of the lug on the arm 23. To permit the carriage to skip the debit column position the control plate 2 is raised. For this purpose the control plate 2 has a downwardly extending plate 27 that is raised therewith when the machine is given a blank cycle or spacing stroke so that if an overdraft condition exists and the lever 16 is rocked to the position shown in Fig. 2 the control plate on its descent is checked by the plate 27 engaging the shoulder 28 of the lever 16. The control plate is thus held in an elevated position until the pins 4 corresponding to the debit balance position have passed the control pins in the housing 5A after which the bevelled edge 29 of the plate 27 slides off the shoulder 28. The arm 23 is restored to its normal position by means of a roller 30 on an oscillatory arm 31 rocked at the end of each cycle of operation. A lug 33 at the upper end of the lever 16 prevents the plate 27 sliding off the Lever until it has travelled off the shoulder 28. Specification 401,904 is referred to.