On the box it listed: warming plate, removable filter basket, and automatic shut off valve. At home, it bore an uncanny resemblance to a coffee maker. It had a real looking plug which fit snugly into an electric wall outlet; a small switch which lit up when it was turned from 'off' to 'on'; a receptacle for the cold water as well as one for a filter containing ground coffee.
Although it boiled water, not very much entered the filter basket. The amount of water which did mix with the grounds was, for the most part, not able to drain into the warm pot and—instead—seeped over the edge.
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I now own an authentic looking replica of a coffee machine which is both objet trouvรฉ and inexpensive reminder.
In this picture it is 3/4 full of coffee, which was made in our french press.
Note: click on the images for their derivations.