Espresso Machines - Which One is Right For You? Most people envision this when they think of an espresso machine. They are machines driven by pumps that give the user control over grinding, tamping, and extraction time. Luigi Bezzera and Desiderio Pavoni patented several improvements to this design such as https://www.coffeee.uk/products/black-melitta-purista-espresso-machine-series-300