Invented by Leonardo Torres in 1920, the Torres calculating machine is a machine that solves essential addition, subtraction, multiplication, and division problems using a simple manner. It was a ...

Léon Bollée, “Calculating-Machine,” U.S. Patent 556720, March 17, 1896. This patent lists Bollée’s French, Belgian and British patent numbers in addition to describing the machine. Leon Bollée, ...

Customers were happy to buy electric ‘calculating machines’, as Thomas Watson senior insisted on calling them, from the same firm that had sold them their electromechanical predecessors.

Calculating Machines Can Yield National Industrial Production Goals, Expert Says Mark III Calculator May Also Be Able to Predict Chances Of Couple's Marital Success. NO WRITER ATTRIBUTED.

18 thoughts on “ Antique Electromechanical Calculating Machines ” ultimatereality92 says: March 25, 2012 at 7:33 am It sounds and looks so beautiful. Report comment. Reply.

The device appears to be a geared astronomical calculation machine of immense complexity. Today we have a reasonable grasp of some of its workings, but there are still unsolved mysteries.

Léon Bollée, “Calculating-Machine,” U.S. Patent 556720, March 17, 1896. This patent lists Bollée’s French, Belgian and British patent numbers in addition to describing the machine. Leon Bollée, ...