3 of 26Image
Filed: Feb. 15, 1892
Issued: Dec. 13, 1892
Inventor: J. W. Culmer
Assignee: The Computing Scale Company
In 1892, J.W. Culmer filed a patent for a device he called a "Computing Scale-Poise"
The patent describes the devices as follows:
"My said invention comprises a sliding device which contains in itself the computing mechanism, the operation of which is effected by the sliding of such device upon the scalebeam of a weighing-scale or the movement of such device in its adaptation for computing the value of articles otherwise measured."
Image taken from U.S. Patent 487,824 - Digitized by Google