Improvements in Syphons or Apparatus for Drawing Liquids from Casks and other Receptacles.
Year: 1892

page_text: COMPLETE SPECIFICATION.
Improvements in Syphons or Apparatus for Drawing Liquids from
Casks and other Receptacles.
1, BERNHARD GREVE, Manufacturer, of 22, Duffesbach Cologne-on-the-Rhine,
Germany, do hereby declare the nature of this invention and in what manner the
same is to be performed, to be particularly described and ascertained in and by
the following statement:-
The present invention relates to syphons, in which the sucking action or
exhaustion proceeds from the apex, and in which therefore the two legs of the
syphon may be plain tubes, as is the case with the syphon described in the Specifi-
cation of my Patent No. 13697 of 1890.
The principal object of the improvements is, to construct the syphon in' such a
manner, that the liquid sucked up by the piston need not follow the latter in the
cylinder, but may pass directly from one leg of the syphon into the other.
In consequence of this modification, the packing of the piston in the cylinder
may be less perfect, and the piston will therefore run more easily.
In the following description reference will be made to the accompanying
drawings, Figs. 1 to 4, of which Fig. 1 is a side elevation of a syphon embodying
my invention, while Fig. 2 is a plan and Fig. 3 a vertical section of a slightly
modified construction, and Fig. 4 is a section of a piston.
C
The syphon chiefly comprises two branches or legs a, b, and a cylinder which
forms the apex of the syphon. The branches a, b, may be rigidly fixed to the
cylinder, or they may be moveable.
The leg serves for the discharge of the liquid, and is provided with a stop-
cock. Between the apex or upper end of the legs a and b, and the bottom of the
cylinder I insert a short tube e provided with a stopcock e¹, which serves to
hermetically close the apex or top of the two legs a b, after sufficient liquid has
been sucked up by the piston c', to establish a continuous flow, or to fill the leg b.
The motion of the piston c and piston rod may be effected by means of a
handle y, as represented by Fig. 1, or by means of a lever (Figs. 2 and 3) which
is connected with the piston rod by a pivoted crossbar ². The said lever / is
preferably secured to the cylinder e by means of a hinged post and a ring ».
The first method of operating the piston is intended for small syphons and the
second for larger apparatus.
To prevent the piston from being drawn out of the cylinder e, the latter is closed
with a cover d having several perforations o.
For drawing off liquids by means of this syphon, the leg or branch a is
introduced into the liquid and then the piston el slowly drawn up. Previously,
the piston must, of course, be in its lowest position, the cock & must be closed and
the cock e open. By the slow lifting of the piston c', the liquid is caused to rise
into the branch a, the air is drawn out of the branch b, and both branches are filled
with liquid.
If now the cock e be closed, and the .cock 6' opened, the liquid will flow out
through b.
The flow of liquid may be interrupted, whenever desired, by simply closing the
cock b¹. For stopping the discharge of liquid altogether, after the two cocks b¹
and e' have been opened, it is sufficient to force down the piston c'.
One of the two branches ab, or both of them, may be rendered flexible by
forming a part of its or their length of indiarubber, containing a helical coil of wire,
to prevent the tube from being crushed. The same object may be attained by the
use of flexible metallic tubing.
In Fig. 3 the piston c' is shown as having two packing discs or cup leathers.

page_text: Fig. 4 shows a piston having only an upper packing disc which is laid upon a
cork disc and held in place by two metal plates traversed by the piston rod c².
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. In a syphon or apparatus for drawing off liquids, the combination of the
syphon legs or branches (a, b), with a cylinder and piston situated above the apex
of the said branches, and means for establishing and interrupting communication
between the apex of the said branches and the said cylinder, substantially as
described.
2. In a syphon of the kind described, a branch or leg having part of its length
made of an india rubber tube in which is embedded a helical coil of wire.
3. In a syphon of the kind described, a piston having only one (an upper)
packing disc or cup leather, which is placed upon a disc of cork and secured to the
same by means of two metal plates and the piston rod.
Dated this 28th day of March 1892.
B. GREVE,
By Fairfax & Wetter,
433, Strand, London, Agents.