GB497196A - Motor-driven calculating or accounting machine - Google Patents

Abstract

497,196. Calculating-apparatus. VEENMAN, D. April 9, 1938, No. 10906. Convention date, April 10, 1937. [Class 106 (i)] A motor driven calculating-machine has two sets of keys and corresponding carriages or similar devices carrying setting members for entering the items set up on the keys, said carriages co-operating periodically with a totalizer or printing mechanism in such a manner that during the setting on one of the carriages the driving mechanism is operated to effect the registration of the amount set up on the other carriage. The sets of keys T<1>, T2, may be arranged side by side or one behind the other. As shown in Figs. 1 and 2, the keys 2 are pivotally connected to push bars 3, 3<1>, extending through guiding members 4, 4<1> to co-operate with setting members 9 in slidably mounted carriages Band A. Between the carriages A and B are arranged the differential actuating and type-setting members 10. Each member 10 is provided with a stop 14 on the end of an arm 16 pivoted on the member and a pin 17 on the arm engages the fork of a member 18 which is adjusted to one side or the other to bring the stop 14 into position to engage the projected setting members. In the normal position of the carriages A and B, Fig. 3, they co-operate with levers 19, 19<1> to maintain the circuit to the motor open. When the carriage A has been displaced to the left and the item set thereon the lever 19 rocks but the motor circuit is not completed until the carriage B has received a displacement to allow the lever 19<1> to rock. During the setting up of the item on carriage B the machine operation is started to effect the actuation of the members 10 in accordance with the setting on the carriage A. To facilitate manipulation of the keys when the sets are arranged one behind the other as shown in Fig. 5, the machine frame carries a pivoted bail 29 movable between stops 30, 31 to guide the hand of the operator.