Period: 1830 - 1840
System: Pump percolation
Beautiful example of a stove-top percolator made in France in copper featuring brass and wooden accessories. When it warms up, the water in the heater (the lower container), rises upwards through the external tube and then flows down onto the fretwork tinplate filter containing the ground coffee in the upper cylinder. A whistle blows and the glass tube shows the level of the boiling water passing from the boiler to the filter.
At this stage, the coffee maker is removed from the heat and the side valve between the upper container and the boiler is opened to let the coffee flow into the lower part and push it into the cups. The percolation cycle occurs once only in this way. If, on the other hand, the coffee maker is not removed from the heat and the valve remains open, the process with the continuous cycle of percolation with recirculation pumping occurs.