US Patent #388118 Details
Be it known that I, William S. Burroughs, a citizen of the United States, residing at St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Calculating Machines, of which the following is a specification.
My invention relates to that class of calculating machines in which numbers are transferred to registers on striking-keys bearing such numbers; and my invention consists in the combination of a series of keys, one or more series of number-wheels, (one series being a recorded) and connections, as fully described hereinafter, whereby each number struck is at once set u p on the register and also printed, and whereby the sum of all the numbers is printed below such numbers as required.
In the drawings, Figure l is a side elevation of the machine, part of the case broken away. Fig. 2 is a plan, a part broken away. Fig. 3 is a sectional elevation of part of the machine, showing the parts in their normal position before beginning operations; Fig. 4, the same as Fig. 3, the parts in position as the rack-frame begins its descent; Fig. 5, the same, the rack-frame and other parts at the limit of their lower motion; Fig. 6, a sectional plan View showing parts on different planes; Fig. 7, a view showing one of the rack-levers and some of the parts connected directly therewith. Figs. 8 and 9 are transverse elevations of part of the machine, looking in the direction of the arrow, Fig. 3, showing the parts in different positions. Fig. l is a detached view of part of the register-frame and cam. Fig. 11 is a side view mainly of the printing devices. Fig. l2 is a detached view of devices connected with the keys.
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