DE255745C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

CLASS 34 /. GROUP

Coffee machine. Patented in the German Empire on May 24, 1912.

The invention relates to that type of coffee machine in which the filled Water is propelled up through the boiling process in a riser pipe and after that Penetrating one with ground coffee beans or with coffee substitute or one The mixture flows back down from the two filled sieve containers into the storage space. Both known such coffee machines mixes

ίο the coffee solution with the water, and the mixture is always pushed up anew. This should be the case with the new coffee machine be avoided.

According to the invention, the finished coffee solution is water from the storage kept separately that in an annular container one on both the cylindrical Outer wall of this container as well as arranged displaceably guided shell on the riser pipe is, which floats on the water filling at the beginning of boiling and by adding the finished coffee solution during boiling gradually sinks to the bottom of the coffee machine.

In the drawing, such a machine is shown in a vertical center section. The vessel α contains in the middle of its bottom b an elevation c in which the heating flame engages. This elevation is covered by an inverted shell d , which contains a ring of holes β for the water to flow through. The riser pipe f connects to the shell d . An overflow pipe g is loosely inserted into the upper end of the riser pipe. On the shoulder h, which is formed from the upper end of the riser pipe f around the overflow pipe, the sieve container i, which contains the filling k , rests. The sieve container is closed in the usual way with a cover which is likewise perforated in the manner of a sieve.

In the upper edge of the cylindrical outer wall m of the vessel α , the cover 0 provided with a handle η is fitted in a vapor-tight manner. In addition, the vessel α carries the handle f and the pouring spout q.

The new invention lies in the application of the shell r, which is guided with its tubular upwardly drawn-up inner edge s on the riser pipe f and with the upwardly drawn-up edge t on the cylindrical outer wall m . The inner edge s is located between the riser pipe f and the inner wall j of the sieve container i .

The use and mode of operation of the subject matter of the invention is as follows:

The cover 0 and the sieve container i together with the sieve container cover I and the overflow pipe g are removed, as is the float r. Then water is poured into the vessel α ; the bowl is then placed on it, which then floats on the water. Furthermore, the cover I is removed from the sieve container i in the usual way, the filling k is introduced, the sieve container is closed again, the whole thing is placed above the bowl r on the riser pipe f and the cover 0 is placed on the vessel α . After this

When the heating flame is ignited, steam bubbles develop in the riser pipe f such that a mixture of bubbles and liquid water is created there, which is specifically lighter than the bubble-free water outside. As a result, the mixture is thrown up in the riser pipe and penetrates the sieve container i, while fresh water penetrates through the holes e . The coffee solution flowing down from the sieve container i collects in and above the bowl r , so it is kept separated from the fresh water underneath it. The bowl r gradually sinks down to the bottom b . As soon as this is reached, which can be seen, for example, from the cessation of the low noise associated with the rise of the mixture in the pipe f , the flame is extinguished.

The pouring spout g opens above the point which the edge t of the bowl r occupies in its lowest position.

Claims (1)

Patent claim, Coffee machine, characterized by a bowl (r) which is slidably guided both on the outer wall (m) and on the riser pipe (f) , which floats on the water filling at the beginning of boiling and, as it absorbs the finished coffee solution during boiling, gradually up to Floor sinks. 1 sheet of drawings.