Patent GB-190419101-A (GB)
Title: Improvements in or relating to Calculating Machines.
Inventor: KUN MICHAEL
Filed: 1904-09-05
Granted: 1905-08-31
Abstract: 19,101. Kun, M., and Halphen, G. Sept. 5. Calculating-apparatus; counting-apparatus.-In a recording adding-macbine with one bank of number keys, resembling a typewriter, there is one set of counting - wheels, with zero-setting and transferring mechanisms, and the traversing paper-carriage determines, by its position, the denomination of the counting-wheel to be actuated. There are three rows of keys, including (1) the spacing-keys 1, Fig. 2, for bringing the carriage at once into the position to record and register a figure of given denomination, (2) t h e numeral keys P which print a figure and actuate the counting - wheels 15 differentially, and (3) the summing-keys A for the various denominations, which are brought by their respective counting- wheels over the bridgebar 22 corresponding to the digit recorded by the wheel at the instant. There are no numerals visible on the wheels, but the total is obtained in print by pressing all the summing-keys in succession. Depression of a spacing-key 1 lifts the bar 3 and rack 4 to a height determined by the length of the hook 9, rotates the spur-wheels 5, 7, Fig. 3, and traverses the carriage 6 by means of its rack to the required extent. If it be set to the thousands, the thousands bar 11 will then be held down by the proper projection 10 on the carriage, the corresponding bolts 12 will be pressed back by the wedge-shaped projections 11<1>, and the operating rack-bar 13 of the thousandscounting wheel 15 will be carried into gear with its pinion and simultaneously locked in the slot of a cross-bar 16. The proper key P for the thousands digit is now depressedto operate its type-bar and lift the cross-bar with its looked rack-bar through a distance determined by the hook 20 of the particular key. As the key-lever 18 is depressed, the rod 25 is drawn down, and one or other of the pawls 26, as determined by the arm 26', drive3 the ratchet-feed wheel 27 of the spacing-mechanism upon the return stroke of the key, thereby releasing the bar 11 and restoring the actuating-parts. As each counting-wheel is rotated, the cam F thereon positions the sliding tongue 21 so as to bring the corresponding summing-key A over the bridge-bar 22 of the key bearing the numeral registered by the wheel ; each key-lever 18 co-operates with one bridge-bar only, and the wheels transfer by means of pallets 32 thereon, contacting with a projecting piece 31 on the link 30 so as to force a bar 17 backwards and feed the next higher wheel through one unit by means of the pin 17'. Fig. 7 shows the zero-setting arrangement. The cylinder 33 is spring-held in frictional contact with the counting- wheels, so that, when turned by means of the handle 34 and spur-wheels 42, 43, the wheels are rotated until the concave portions 48 come opposite the cylinder, which is simultaneously forced outwards by the projection 46 contacting with the fixed piece 47 on the casing, whereupon the motion ceases. The means shown for ensuring parallel motion of the cross-bars 3, 16 and the bridge-bars 22 are shown in Fig. 6, where the bar 35 has a depending rack 36 gearing with a pinion 40. If this rack moves down, the rack 39 will move up, and an equal downward motion will be given to the other depending arm 37 by means of a pivoted lever 38. To prevent registration upon the adding- wheels when the summing-keys are depressed, a lever 50 is moved to swing the cross-bar 16 backwards by means of linkwork 45, 43, the bar and its parallel motion being mounted to slide in grooves 44.