The grounds end up at the bottom of the press, held there by the now-depressed filter screen, leaving nothing but coffee above the filter. The drip method of brewing is probably the one with which most people are familiar. Water is heated and allowed to flow through the grounds once. Far superior to a percolator, these drip machines are found in many homes under various names, the most famous of which is Mr. Coffee, but this style of machine is made by nearly every small-appliance manufacturer. There are also manual units where heated water is poured through a filter that rests upon a cup or other vessel.
Water is placed in the bottom chamber, coffee in the upper.
The water is heated and it rises into the upper chamber. When nearly all the water is in the top chamber the heat source is removed and the lower chamber cools causing a vacuum which pulls the water back into the lower chamber, pulling it though the ground coffee. These are usually made of heat resistant glass but it seems that most of them are not designed to be used on a stove. These come with their own alcohol lamps for heating. They are fairly simple to use and are said to make excellent coffee.