Espresso Machines - Which One is Right For You? Most people imagine this when they think of an espresso machine. They are pump-driven machines that give the user the ability to control grinding, tamping, and extraction time. Luigi Bezzera and Desiderio Pavoni patented several improvements to this design such as https://wwwcoffeeeuk36618.prublogger.com/29272646/why-we-why-we-espresso-machine-sale-and-you-should-also