Patent GB-191403083-A (GB)
Title: Improvements in Adding Machines.
IPC: G06C15/06
Filed: 1914-02-05
Granted: 1915-02-05
Abstract: 3083. Marks, E. C. R., [Addometer Corporation]. Feb. 5. Adding apparatus with operating means; transfer mechanism.- Relates to the provision, in multiple-bank, keyset, lever-operated adding-machines of a sidebar for controlling the totalizer engagem e n t and disengagement with the rack-bars, and of means whereby the total and sub-total keys control these movements and also those of the transfer-restoring mechanism derived from the side-bar. Keyboards; differential mechanism; totalizing - counters. - The plunger keys 7, Fig. 1, through link-work, project stops 9 adapted to arrest differentially the upward movement of totalizer-actuating and type-bearing rack-bars 42, 43 when released by upward movement of a main restoring-bail 46, the keys of each bank being held by a latch-bar 16 provided with release mechanism. A shaft 60 is rocked bv an operating-handle, and the movement of the restoring-bail is derived therefrom by means of a crank 59 and link 53. The totalizing-counter 74 is rocked to determine the engagement of its pinions with the actuating-racks 73 by means of one of the lever-arms 77, Fig. 6, in which the counter-spindle is mounted, operated by the contact of a pin 145 upon a link 144 attached thereto with abutments 146, 147 upon a second side-bar 120, also reciprocated by means of the rock-shaft 60. The engaging and other movements thus occur suddenly towards the end of each stroke of the side-bar. A transfer-restoring bar 90, Fig. 8, upon arms 91, 92, is also timed for operation by means of a bar 103 attached to one arm 92 and slotted at the other end for engagement with a fixed pin. Upon the bar is a lug 106 which is struck by an arm 107 upon the main side-bar 53 to effect the movements, a pin 983 upon the main side-bar also controlling a locking elbow-lever 98. These parts are duplicated upon the other side of the machine. Printing totals and sub-totals.-A total key 132 is provided with a hooked base 133 adapted to be engaged by a swinging lever 127, pivoted to the side-bar 120, which rises with the released key and in effect masks the side-bar so as to substitute other lugs, abutments, and pins for those normally operative, whereby the timing of the engagement and disengagement of the totalizer and the control of the transfer-restoring bar is altered to effect the taking of a total by discharge from the totalizer into the actuating rack-bars, from which it is printed in the same way as an item. The sub-total key 175, Fig. 6, is also adapted to hook under a lug 130 upon the lever 127 and to rock the lever upon release, producing the engagement of the totalizer and rack-bars during the upward movement of the rack-bars. The forward movement of the side-bar and the lever then disengages the key so that the pinions remain engaged during the return of the racks, and are finally disengaged by the contact of the abutment 147 with the pin 145. In connexion with these operations, the transfer restoring-bail 90 is controlled by means of a bar 230, pivoted upon a rear crank 231, and adapted to be rocked by the total and sub-total keys so as to control, through link-work 116, 112, the connexion to be effected between the side-bar 120 and a link 200 to which the transfer - restoring bail is pivoted. The parts determine, accordingly, whether lugs 106, 204 upon the bars 103, 200 shall be engaged respectively by stops 107, 205 when the side-bar 53 moves forward, and the restoring-bar be advanced, or whether the lugs will lie above the stops and no movement of the restoring-bar result.