10 Dec, 1892

Heinrich Esser

In the early 1890s, the German civil engineer Heinrich Esser (1845–1906), who lived in Aachen, where he worked as a municipal police building inspector, invented as a hobby and in his spare time a mechanical calculating machine, which he later patented in Germany (patent №82965, 10 December 1892), and USA..Read More

23 Dec, 1892

Otto Steiger and Hans Egli

In December 1892 the brilliant Swiss engineer Otto Steiger from St. Gallen (1858-1923), who lived in Munich, received his first patent for a calculating machine of direct multiplication type (German patent DE 72870). Next years the machine was patented in Switzerland (No. CH6787), Great Britain (No. GB20968), France (FR228628), USA..Read More

06 Apr, 1893

Leonardo Torres

In 1893 the eminent Spanish engineer and inventor Leonardo Torres y Quevedo (1852-1936) presented his first paper to the Spanish Royal Academy of Sciences. It was devoted to an algebraic machine, able to calculate the roots of an any-grade equation. The paper was accompanied by a working prototype of the..Read More

31 Oct, 1893

William Gubelmann

William Samuel Gubelmann (1865-1959) was a remarkable American inventor and businessman, who held hundreds of USA and Canadian patents, mainly in the field of adding machines, accounting machines, and cash registers. In 1959 Popular Mechanics magazine called Gubelmann the father of all calculating machines in use today. The New York..Read More

23 Jan, 1894

Burridge and Marshman

Lee Spear Burridge (1861-1915) and Newman Russell Marshman (1846-1930) of New York were American inventive geniuses and manufacturers, who worked together between 1882 and 1897, and are primarily known as typewriter inventors, but they patented also quite a few calculating devices. t the beginning of the 1890s Burridge and Marshman..Read More

06 Nov, 1894

Horace Hicks

On 6 November 1894, Horace David Hicks, an employee of Brown’s Lumber Company, Whitefield, New Hampshire, USA, got a patent (US patent No. 528596, assigned one-half to Brown’s Lumber Company) for adding machine with a very interesting construction. Certainly, the adding device of Hicks remained only on paper and never..Read More

23 Nov, 1894

Wilhelm Küttner

In the early 1890s, the German merchant Friedrich Wilhelm Küttner (1841-1920) from Burgk bei Potschappel (near Dresden) decided to invest a part of his money in creating a calculating machine. The device itself, based on the pin-wheel mechanism, known in Europe as Odhner’s wheel, was designed and manufactured by Woldemar..Read More

29 Jan, 1895

Charles Labofish

In the late 19th and early 20th century Charles Schachan Labofish (1861-1925), a machinist and Jewish immigrant from Odessa, Russian Empire, who came to America in 1888, devised various machines (calculating machines, typewriters, log-sawing machine, cyclometers, indicating device for bicycles, brush-machine, gage, etc.) and received some fifteen US, Canada and..Read More

13 Jun, 1895

Franz Trinks

In March 1892, Franz Trinks (1852-1931), a mechanical engineer and personally liable partner of Grimme, Natalis & Co. of Braunschweig, manufacturer of sewing machines and other household items as well as cast goods, was visiting a meeting of German sewing machine manufacturers in Hamburg. There he met a representative of..Read More

06 Aug, 1895

George Calder

In 1895 George Calder Jr. (1830-1897), a prominent businessman, self-taught mechanical genius, and inventor of Lancaster, Pennsylvania, obtained a patent for cash register and indicator (US patent No. 543980). Except for the patent application, nothing is known about the calculating device of Calder, so obviously it remained only on paper..Read More

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