Patent GB-191108438-A (GB)
Title: Improvements in Recording Adding Machines.
Inventor: KOENIG GEORG
IPC: G06C7/06
Filed: 1911-04-04
Granted: 1912-04-04
Abstract: 8438. Koenig, G. April 4. Adding-apparatus with printing-mechanism; varying functions of machine; differential mechanism; transfer and zeroizing mechanisms.- In machines of the key-operated multiple-bank type having a printing-lever, (i) the depression of a key rotates the item and the totalizing- wheels of the corresponding bank through one of a series of vertical rotatable cam-cylinders; (ii) the item-wheels and the totalizing-wheels, which normally both engage a common series of receiving-wheels, can be disengaged therefrom and zeroized at any time, and the item-wheels are always zeroized whenever the printing-lever is actuated. The invention also relates to (iii) overthrow-preventing means for the key-actuated shafts, (iv) the transfer-parts and means for " splitting " the machine by disabling the transfer-means at any point, (v) the selection of any division of the totalizer for use, (vi) the zeroizing parts, (vii) the printing-parts, comprising the setting and actuating means, impression-means, and the devices for effecting line-spacing, the feed and reversal of the inking- ribbon, and for severing the paper, (viii) devices for temporarily disabling the adding and the printing parts. (i) The depression of a key 4, Fig. 1, rotates, through a roller 5, cam-cylinder 6, bevel-gear, and differential toothed disks and pinions 10, 13, a shaft 12 which is common to the particular bank of keys. The shaft 12 actuates through gearing 14, 16, 17, 18, a receiving- wheel 19 which is engaged by the corresponding item and totalizing wheels 22, 43. (ii) The itemwheels 22 and totalizing-wheels 43, which are mounted upon levers 21, 39 respectively, are thrown out of gear with the receiving-wheels 19 and zeroized by springs 25, 46 (see below), upon the depression of keys 29, 55; the item-wheels are always thus disengaged, by means of a connexion 100, whenever the printing-lever 94 is actuated. (iii) Cam-disks 31 fixed to the toothed disks 10 rock, through arms 32, Fig. 13, shafts 30, and thus remove locking - pawls 33 from ratchet-wheels 34, Fig. 1, on the shafts 12 while the shafts are rotated through the correct angles. (iv) Transfer is effected by a singletoothed disk 44, Fig. 2, adapted to engage one of a pair of toothed wheels 50, 51; the wheel 51 engages with a wheel 43, adjacent to the next higher numeral-drum which is driven through a pawl by a ratchet-wheel fixed to the wheel 43. The transfer-wheels 50, 51 are mounted upon levers 48, Fig. 1, and can be swung out of gear with the wheels 43, so that the machine can be split at any point. (v) The totalizing-wheels may be mounted so that each of them can be separately kept out of engagement with the receiving - wheels. (vi) The wheels 22, 43 when disengaged from the common receiving- wheels, are zeroized by springs 25, 46, Fig. 9, attached to pins upon the cams 26, 45. When any of the pins are in their dead-centre position, their cams strike against combs 27 when the wheels are disengaged from the receiving-wheels, and are thus given a partial rotation sufficient to enable the springs to complete the movement. (vii) The depression of the keys 4 sets vertical plates 74, upon each of which rests a series of ten type-bars, through levers 60 having pins 65 engaging with denominational levers 56. These levers 60 are provided with hooks, adapted to engage bell-crank levers 62, which determine the movement given to the levers 56. The levers 56 actuate, through levers 68 and links 70, further levers 72 pivoted at 71 and having a pin-and-slot connexion with the plates 74. Upon the depression of the printing-lever 94, a latch 91 is tripped by an arm 95, thus releasing a spring-controlled bail 86 which strikes the hammers 80, thereby forcing spring-controlled pins 82 against the type-bars. The upper part of a frame 98 is also rocked by a link 96, pivoted to the lever 94, so as to serve as an abutment for the type-hammers when the hammers are thrust back by the pins 82. The bail 86 is restored by the continued movement of the lever 94 and in its rearward movement strikes a slide 101, thereby actuating the inking- ribbon feed-lever 103, and the line-spacing lever 104. A pivoted plate 111 allows the platenfeed to be varied. A double-pawl device 106 enables the feed of the inking-ribbon to be reversed. A manually or mechanically operated knife for severing the paper is guided by a slotted bar 125. (viii) The adding-mechanism can be disengaged by means of a lever which is adapted to move bars 112, 114 and all the shafts 12 forwards, thereby disconnecting the bevel gear-wheels 14, 16. The printing-mechanism can be thrown out of action by actuating a lever 122, Fig. 1, which depresses all the levers 56 beyond the path of the pins 65 upon the keycontrolled levers 60.