Patent GB-556370-A (GB)
Title: Improvements in or relating to printing mechanism for calculating machines
IPC: G06C11/04
Filed: 1942-06-05
Abstract: 556,370. Calculating-apparatus. VICTOR ADDING MACHINE CO. June 5, 1942, No. 7658. Convention date, Sept. 13, 1941. [Class 106 (i)] [Also in Group XVI] In a calculating machine with printing mechanism means are provided to print characterising or identification words adjacent the amounts, such means includes a plurality of differentially movable type carriers, actuators therefor and means to determine the extent of movement thereof in accordance with the word selected. In one form as shown in Figs 2, 3 and 4, the machine in addition to the usual banks of amount keys and operation control keys has a bank of keys 22 each of which is formed with a spindle 82 carrying a set of setting wheels 80. Each of the setting wheels has the letters of the alphabet marked on its surface, these are separated by notches 124 which can be engaged by a stylus through the sight opening 24 to adjust the wheel to bring the desired letter beneath the sight opening thereby setting up any six letter word or abbreviation. Each setting wheel has a stop lug 121 to co-operate with a stop pin 122 on the spindle 82. The keys are mounted for sliding movement and co-operate with a detent bar 92 and a release slide 99. When a key is depressed gears 110 integral with the selected setting wheels are moved into engagement with gears 114 to which are secured pinions 118 in mesh with racks 120 on differentially movable actuators 56. On denression of a key the forward movement of the slide 99 rocks a shaft 102 and moves a bail 106 to free the actuators. During the machine cycle the main restoring bail 66 permits the actuators 56, under spring action, to move differentially until the setting wheels associated therewith are returned to normal position with the lugs 121 engaging the stop pins 122. Corresponding movement is transmitted through racks 54 on the rear end of the actuators and segmental gears 52, 48 to type wheels 28. The type characters are arranged similarly to the letters on the setting means and after adjustment are swung to make an impression on the record strip 18. The type wheels are carried on studs secured to arms 32 pivoted on a cross shaft 34 and each has a pinion 36 engaging an idler pinion 38 controlled by an aligning pawl 40 during their swinging movement to effect an impression. During the restoration movement of the actuators the setting wheels are returned to their adjusted position to indicate the selected word and the detent bar 92 is then released to free the depressed key 22. In a modification shown in Figs. 8 and 9, the setting of the type wheels 28 is controlled by notched plates 134. The selected plate is taken from a storage magazine 144 attached to the machine casing and is inserted in a guide 136, the amount of insertion being limited by a flange 140 on the plate which bears the characterising legend or word. Tn this construction the forward end of each of the actuators 130 has a stepped stop face 132 to co-operate with the notches on the selected plate so as to limit the movement, during an operation, to set the type wheels 28 in accordance with the selected word.