Espresso Machines - Which One is Right For You? Most people imagine this when they think of an espresso machine. They are pumps-driven machines that give the user control over grinding, tamping, and extraction time. Luigi Bezzera, Desiderio Pavoni and others invented improvements to the design. These included the portafilter https://www.coffeee.uk/products/russell-hobbs-22630-portable-coffee-maker