Mechanical Engineering

On March 16, 1909, Matilde Pionzio-Cavagnino of Turin, Italy, was granted a patent for a novel machine designed to register commercial transactions and facilitate bookkeeping. The device aimed to assist both experienced accountants and beginners.

On April 18, 1912, Rosa Chamberlin of London, UK, was granted a patent for inventing a novel air-cooling machine. Intended for use in industrial settings, the invention featured multiple pistons and cylinders to compress air and lower the external temperature.