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Brunsviga 13 is a manual mechanical calculating machine (arithmometer) with a 13-position counter. Arithmometers were patented in the 19th century in France and were designed to perform addition and subtraction, whereas multiplication and division could be conducted by several operations of adding and subtracting. They were driven manually (with a crank or a lever).

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Brunsviga 13 is a manual mechanical calculating machine (arithmometer) with a 13-position counter. Arithmometers were patented in the 19th century in France and were designed to perform addition and subtraction, whereas multiplication and division could be conducted by several operations of adding and subtracting. They were driven manually (with a crank or a lever).
Brunsviga 13 is a small and simple calculating machine produced within the traditional design implemented in 1927. It was designed in the Franz Trinks plant (Brunsviga Maschinenwerke Grimme und Natalis & Co AG). In 1892 Franz Trinks purchased patent rights and licences to produce machines designed by Willgodt Theophil Odhner and manufactured in Saint Petersburg. In the 1870s Odhner, who was a Swede working in Russia, invented (as it was soon found out, at the same time as Frank Stephen Baldwin in the USA) a new type of mechanism for calculating machines. The idea was the application of a gear with a varying and adjustable number of teeth. This solution significantly simplified the construction and lessened the size and weight of the produced calculating machines.
Odhner’s improved solution, patented in 1890, was applied to the batch production of these machines until the 1980s; however, electric drives were becoming more and more popular. The production of Brunsviga machines terminated in the late 1960s, but historians and experts consider the brand the most famous European brand of manual calculating machines of the 20th century because of the over half a million devices produced from the beginning of Trinks’s plant operation to the 1960s.
This Brunsviga 13 machine is labelled with a plate by the Polish representative, the Warsaw company, Brock Brun. Since the 19th century, it had been manufacturing tools and machines, and it became widely known throughout Poland as a distributor of goods for many foreign companies. For example, as the1st company in the Polish market it imported Remington typewriters in the 1870s and between the World Wars it was the only company to install Otis elevators in our country.

Elaborated by the Municipal Engineering Museum, © all rights reserved

See also:
http://www.columbia.edu/cu/computinghistory/brunsviga.html

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“Brunsviga 13” calculating machine

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