The principle of a vacuum brewer was to heat water in a lower vessel until expansion forced the contents through a narrow tube into an upper vessel containing ground coffee. When the lower vessel was empty and sufficient brewing time had elapsed, the heat was removed and the resulting vacuum would draw the brewed coffee back through a strainer into the lower chamber, from which it could be decanted. The Bauhaus interpretation of this device can be seen in Gerhard Marcks' Sintrax coffee maker of 1925.
Prior to the introduction of pre-measured self-contained ground coffee filter rings, fresh coffee grounds were measured out in scoopfuls and placed into the metal percolator basket. This process enabled small amounts of coffee grounds to leak into the fresh coffee. Additionally, the process left wet grounds in the percolator basket, which were very tedious to clean. The benefit of the Max Pax coffee filter rings was two-fold: First, because the amount of coffee contained in the rings was pre-measured, it negated the need to measure each scoop and then place it in the metal percolator basket. Second, the filter paper was strong enough to hold all the coffee grounds within the sealed paper. After use, the coffee filter ring could be easily removed from the basket and discarded. This saved the consumer from the tedious task of cleaning out the remaining wet coffee grounds from the percolator basket.
The Mr. Coffee Optimal Brew coffee maker System has a highly modular design, with its rectangular water reservoir easily sliding in and out of the chassis. For those who only want a cup of basic coffee, you will find that the Mr. Coffee Optimal Brew coffee maker System will do that very well – its "brew now" button is found on the front of the machine.
Treat yourself to a new coffee maker from our selection at Williams Sonoma and get those mornings off to a brighter start. Choose from ultra machines for the office to low-tech coffee makers for camp and off-grid activities. Coffee machines are available with and without a coffee mill so you can choose to have the convenience of grinding your beans right where you brew your favorite beverages. Deluxe coffee centers allow you to make coffee, espresso, cappuccino and other coffee-based beverages including latte, pepresso, and Irish coffee. Several versions of coffee-espresso makers include milk foaming technology for creamy toppings on your mochas and macchiatos. Deluxe coffee makers and machines are superb additions to galleries, offices, club meeting spaces and anywhere you need to make a lot of coffee fast.