Bunn-O-Matic came out with a different drip-brew machine. In this type of coffeemaker, the machine uses a holding tank or boiler pre-filled with water. When the machine is turned on, all of the water in the holding tank is brought to near boiling point (approximately 200–207 °F or 93–97 °C) using a thermostatically-controlled heating element. When water is poured into a top-mounted tray, it descends into a funnel and tube which delivers the cold water to the bottom of the boiler. The less-dense hot water in the boiler is displaced out of the tank and into a tube leading to the spray head, where it drips into a brew basket containing the ground coffee. The pourover, water displacement method of coffeemaking tends to produce brewed coffee at a much faster rate than standard drip designs. Its primary disadvantage is increased electricity consumption in order to preheat the water in the boiler. Additionally, the water displacement method is most efficient when used to brew coffee at the machine's maximum or near-maximum capacity, as typically found in restaurant or office usage. In 1963, Bunn introduced the first automatic coffee brewer, which connected to a waterline for an automatic water feed.
Domestic electrification simplified the operation of percolators by providing for a self-contained, electrically powered heating element that removed the need to use a stovetop burner. A critical element in the success of the electric coffee maker was the creation of safe and secure fuses and heating elements. In an article in House Furnishing Review, May 1915, Lewis Stephenson of Landers, Frary and Clark described a modular safety plug being used in his company's Universal appliances, and the advent of numerous patents and innovations in temperature control and circuit breakers provided for the success of many new percolator and vacuum models. While early percolators had utilized all-glass construction (prized for maintaining purity of flavor), most percolators made from the 1930s were constructed of metal, especially aluminum and nickel-plated copper.
If you push the 54mm stainless steel portafilter into the hands-free grinding cradle, the grounds will go right into the filter. The grinder shuts off when it's done, too, so you don't have to worry about figuring out if you've got the right amount. Finally, the included 54mm tamper ensures that your grounds are evenly pressed, so you get the most out of your beans.
Try a new way to brew coffee if you’re tired of the same-old, same-old. We offer a variety of ways to brew up tasty hot beverages to fill your favorite coffee cup. Choose from standard drip machines with high volume carafes or durable thermal carafes. Pour-over brewers come in manual and automatic versions to create fast, hot cups of java goodness. Automatic versions heat water to industry standards in mere seconds and allow plenty of contact between hot water and beans to develop the coffee essences you love. Manual pour-over brewers have everything you need but the hot water to make your own coffee wherever you are. Order a teapot or automatic kettle to make quick cups of coffee without waiting for a machine to brew it for you. Go retro with a siphon-style coffee maker. You never have to use the stove for the electric versions of siphon brewers. A flip of a switch starts the process. Hot water vapor pushes through the top of the appliance to soak the ground coffee beans, and then the brew slowly drips back down into the carafe for a perfect cup of coffee.