IMPROVEMENTS IN SAFETY APPARATUS FOR PREPARING DECOCTIONS OF COFFEE AND FOR OTHER SIMILAR " PURPOSES
Year: 1884

page_text: I, EDWIN AMBROSE BRYDGES of the firm of Brydges & Co. Engineers and Patent
Solicitors of 107 Königgrätzer Str. in the City of Berlin and German Empire do
hereby declare the nature of my invention for "IMPROVEMENTS IN SAFETY
APPARATUS FOR PREPARING DECOCTIONS OF COFFEE AND FOR OTHER SIMILAR
"
PURPOSES and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
This Invention relates to improvements in safety apparatus for preparing
decoctions of coffee and for other similar purposes whereby the spirit or other
flame is extinguished as soon as the water in the boiler or water reservoir has been
passed off into the second or decocting receptacle by means of the steam generated
in the said boiler or water reservoir.
Figure 1 is an elevation of the machine with the lamp closed. The dotted lines
in this figure show the position of the water reservoir or vessel and the lid of the
lamp when the latter is lit and the reservoir or vessel is provided with water prior
to and during the operation of making a decoction of coffee.
Figure 2 is a vertical section of Fig. 1.
Figure 3 is a section on the line a b in Figure 1.
Figure 4 is a plan or top view with the lid to the coffee receptacle removed.
Figure 5 is a top view of the lid to the coffee receptacle.
A is the water reservoir or vessel, B a stopper which is screwed into the lid to
the water reservoir or vessel A, C is a bent tube which is attached to the lid of the
water reservoir A and serves to lead the boiling water from the reservoir or vessel A
into the coffee receptacle E.
D D are two trunnions fixed to the water reservoir or vessel which said
trunnions have their bearings in the cavities or recesses H of the semicircular
arms J-K is a piece of metal which is attached to the bottom of the water
reservoir A and slides on the standard L. so as to form a guide for the said reservoir
or vessel.
M is a ring which runs around the coffee receptacle and is provided with a
weighted ball-The ring M is cast of one piece with the semicircular arms J and
is moveably connected with the fork O of the standard L by means of a suitable
ain on nivot P

page_text: E is the coffee receptacle, F the lid to the same which said lid is provided with
an elongated opening or slot.
G is the cock for letting off the coffee, Q is the double sieve for holding the
coffee; the same consists of two parts and can be held by the ring Q1 or the upper
or lower sieve can be provided with suitable feet.
R is the base which is provided with suitable rings and openings and is made
of one piece with the standard or handle L-S is a spirit or other suitable lamp the
lid T of which is so arranged that the same is automatically closed as soon as the
water is forced out of the reservoir or vessel A.
The lid T is closed by means of a spiral spring V arranged in the interior of a
piece of tubing located in the lamp S which said spring comes into operation as
soon as the reservoir or vessel A is raised.
This spring V presses against a small piston W the stem of which is raised, the
lid T closed and the lamp extinguished as soon as the said lid T is freed from the
pressure of the water receptacle or vessel A.
The apparatus operates as follows-
Water is filled into the reservoir or vessel A, the stopper screwed in and the lid
of the lamp opened back as shown in Fig. 2. In filling the reservoir or vessel A
the weight of the ring M and counterweight N is overcome so that the double-
arm J and the water reservoir or vessel A are lowered until the latter comes in
contact with the lid T to the lamp S (Fig. 2).
The lamp is now ignited and the water in the reservoir or vessel A brought to
the boiling point-As soon as the water has been driven out of the reservoir or
vessel A into the receptacle E by means of the steam pressure in A, the ring M and
ifs weight and the double aim J act as a two armed fever, which now turns on the
pivot or pin P in the fork O and raises the reservoir or vessel A out of contact
with the lid of the lamp.
The spring V now comes into action presses the piston W upwards, closes the
lid T of the lamp Sand extinguishes the flame.
When the ring is properly balanced the entire water will at this time have been
driven out of the reservoir or vessel A and the coffee is ready. In this manner
the coffee is scalded but not cooked and can be allowed to flow off by the cock G.
A suitable bell or gong can be so applied to the standard L that the same is
sounded as soon as the lid T is closed by the spring V.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed I declare that what
I claim is
1-The arrangement construction and employinent of the weighted ring M and
the double arm J in combination with the recesses H, trunnions D and piece of
metal K so as to guide the water reservoir or vessel in a straight line whilst the
coffee receptacle E remains stationary substantially as described and shown in the
accompanying drawings.
2-The arrangement and employment of the spiral spring V and piston W in
combination with the lid T to the lamp S substantially as described in the foregoing
specification and shown in the accompanying drawings.
3-The general construction arrangement and employment of the improved
safety apparatus for preparing decoctions of coffee and for other similar purposes
substantially as described and shown in the accompanying drawings.
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