Computer Timeline – Page 10 – Yet another site for bright people, crafted by Georgi Dalakov

22 Nov 1848

Victor Schilt

The calculating machine of the Swiss clock-maker and precision-mechanic Viktor (or Victor) Schilt (1822-1880) was exhibited in 1851 at the Great exposition of the works of industry of all nations in Crystal Palace, London, and received an honorable mention and a bronze medal, placed after the calculating machines of Izrael..Read More

01 May 1849

William Haines

In 1849, William M. Haines, a clerk from Rochester, New York, patented a simple mechanical calculator (US patent No. 6403). The patent model of the device (up to 1880, the US Patent Office required inventors to submit a model with their patent application) is still preserved in the National Museum..Read More

24 Jul 1849

Samuel Young

In the middle of the 19th century, Samuel S. Young of Eaton, Ohio, USA, patented three simple (and quite similar) calculating devices. The first patent (US patent No. 6602 from 24 July 1849) was for а machine for adding figures. The second patent was for a machine for calculation of..Read More

05 Feb 1850

Dubois D. Parmelee

In 1850 Dubois D. Parmelee, a 20-year-old student at New Paltz Academy (later the State University of New York), patented a calculator, which seems to be the fourth key-driven adding machine in the world (after the machines of James White, Luigi Torchi, and Jean-Baptiste Schwilgué), thus putting the foundation of..Read More

04 Mar 1851

John Nystrom

The Swedish born, American civil engineer, inventor, and author John William Nystrom (1825–1885) (born as Johan Vilhelm Nyström) is known as the author of many books and inventions, among them, an interesting calculating device (a slide rule, a type of mechanical analog computer), invented in 1848 and patented on 3..Read More

14 Jun 1851

Alfred Smee

Alfred Smee (1818-1877), a chemist, surgeon, and enthusiastic amateur gardener and horticulturalist, is another creator of early logical machines, who really deserves our attention, just like the earlier thinkers Ramon Llull, Athanasius Kircher, Gottfried Leibniz, and Semyon Korsakov. lfred Smee, a senior surgeon to the Royal General Dispensary, the Bank..Read More

24 Nov 1853

Martial Roussel

On 3 October 1853, Martial Roussel, a member of the Amiens Academy (Somme, department of France), applied for a patent for additionneuse (adding machine). Soon, on 24 November 1853, Roussel got a French patent (Brevet d’Invention No. 17528) for 15 years. The adding machine of Martial Roussel was one of..Read More

26 Sep 1854

Aaron Hatfield

On 26 September 1854, a certain Aaron L. Hatfield of Lewisburg, Pennsylvania, took out a US patent №11726 (see the patent of Hatfield) for a machine for adding numbers. The adding machine of Hatfield, the inventor and manufacturer of adding machines who flourished in the middle of the nineteenth century,..Read More

04 Nov 1855

Ernest-Narcisse Lobbé

In early 1850s a certain Ernest-Narcisse Lobbé, a Parisian horloger-mécanicien (watchmaker and mechanic), created one of the first keyboard calculating machines in the world (after the machines of James White, Luigi Torchi, Jean-Baptiste Schwilgué, and Dubois Parmelee). The machine (so-called Additionneur mécanique à touches) was patented in 1855 (French patent..Read More

01 Apr 1856

James Appleby

In the 1850s James R. C. Appleby, a linsey maker and hosier from Shaftesbury, Dorset, England, devised a simple stylus-operated calculating device (kind of a simple money abacus), a model of which managed to survive to our time (see the lower images). he adding device of Appleby has the following..Read More