Antique Very rare and Unusual original CE Locke The Locke Adder in Very Good Con

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Antique Very rare and Unusual original CE Locke The Locke Adder in Very Good Con:
$895.00

At first I had no idea what this is, so I did a quick search on the web and here is what I found:
The first American-made adder to enjoy modest commercial success was developed by Clarence E. Locke (1865-1945). A native of Edgerton, Wisconsin, he graduated from Cornell College in Mt. Vernon, Iowa, in 1892. Locke worked for a time as a civil engineer in Minnesota, and then joined his father operating a lumberyard in Kensett, Iowa.This version of the device has a metal base with grooves for nine sliding metal rods that move crosswise. Each rod represents a digit of a number being added. Protruding knobs on the rods represent different numerals. The rods are held in place by bronze-colored metal covers that extend over the right and left thirds of the instrument. When the device is in zero position, all the rods are in their rightmost position.Numbers are entered by sliding rods to the left, and the result appears in numbers immediately to the left of the cover on the right. The rods are color-coded to distinguish units of money. They lock when depressed, so that they will not slide if the instrument is tilted. The locking mechanism, the color-coded rods, and the oval shape of the knobs on the rods are all improvements featured in Locke’s second calculating machine patent, taken out in 1905. There is no carry mechanism. The base of it is covered with green cloth.The instrument is marked on the right cover: C.E. LOCKE (/) MFG. Co. It is also marked: KENSETT, IOWA. [/] U.S.A. It is marked on the left cover: THE (/) LOCKE (/) ADDER. It is also marked: PATENTED DEC. 24. 1901 (/) JAN. 3 1905. The instrument fits in a cardboard case covered with black cloth.
So this is an Antique Very rare and Unusual original CE Locke The Locke Adder in Very Good Condition. The redish brown finish is very rare you seldom seen one on the market. here is your chance to add this one to a collection! it comes with the original Bottom box. it also retains its original green felt. Measures 11 1/4\" long x 4 1/2\" wide. Expect minor age wear, minor rust etc.

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