In 1881 the English engineer Samuel Tate applied for a British patent for an improvement in the arithmometer invented by the Frenchman Charles Xavier Thomas. This stepped drum manual non-printing ...

Thomas Arithmometer, underside showing the stepped drums. Thomas Arithmometer. Object Details patentee Thomas, Charles Xavier maker Thomas, Charles Xavier Description ...

Explore the incredible restoration of a forgotten Arithmometer, a fully mechanical calculator capable of adding, multiplying, and dividing, brought back to life with precision! The restoration ...

Peter Gray, On the Arithmometer of M. Thomas (de Colmar), and its application to the Construction of Life Contingency Tables, Journal of the Institute of Actuaries and Assurance Magazine, Vol. 17, No.

He then went into the arithmometer, which is arguably the first commercially successful mechanical calculator with four functions. That was around 1821 or so. But [Dan] mentions it used a Leibniz ...

AT a well-attended meeting of the Newcomen Society held in the rooms of the Royal Society on February 16, Mr. R. Nilsson gave a paper entitled "The Pascal Arithmometer and Other Means to Solve ...

VISITORS to an Oxford museum got a chance to see one of the world’s first calculators in action. Museum of the History of Science curator Stephen Johnston demonstrated and discussed the ...

Adolf Sonnenschein's 'Arithmometer', late 19th century. Image View Description. Arithmetical teaching aid, "A. Sonnenschein's Improved Arithmometer", in two boxes 1 (A and B) and 2, made by George ...

Odhner Arithmometer. Legion Media Swedish engineer Willgodt Theophil Odhner spent most of his life living and working in St. Petersburg. In 1873, he invented ...