Espresso Machines - Which One is Right For You? Most people envision 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 and Desiderio Pavoni invented several improvements to this design such as the portafilter https://coffeee29942.actoblog.com/30367257/this-is-the-intermediate-guide-to-espresso-machine-sale