Adding-Machine.
Description:
Patent for an adding-machine meant to "add fixed amounts of money received or to calculate the number of days a laborer has worked or the number of fractions of days" (lines 14-17). Mounted keys have mechanisms that rotate a ratchet wheel or disk. "Secured to the shaft upon which this ratchet wheel or disk is mounted is a rate-indicator, consisting of a disk divided off into radial sections, and also divided by lines running parallel to the circumference of said disk, dividing the same up into …
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Date:
August 27, 1895
Creator:
McElyea, James L.
Item Type:
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Patent
Partner:
UNT Libraries Government Documents Department