Espresso Machines - Which One is Right For You? This is what most people imagine when they think of an espresso machine. They are pumps-driven espresso machines that let the user control the grinding, tamping, and extraction time. Luigi Bezzera, Desiderio Pavoni and others have patented improvements to the design. https://www.coffeee.uk/products/black-melitta-purista-espresso-machine-series-300