Espresso Machines - Which One is Right For You? Most people envision this when they think of an espresso machine. They are espresso machines that are driven by pumps that allow the user manage the grinding, tamping, and extraction times. Luigi Bezzera and Desiderio Pavoni patented several improvements to this https://wwwcoffeeeuk49793.bloggip.com/29815745/the-advanced-guide-to-best-home-espresso-machine