Improvements in Apparatus for Controlling the Flow of Acid or other Liquid to and from Casks or other Receptacles.
Year: 1892

page_text: Date of Application; 3rd Nov., 1892
Complete Specification Left, 28th Nov.; 1892-Accepted, 31st Dec., .1892
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Controlling the Flow of Acid or
other Liquid to and from Casks or other Receptacles.
I, ANDREAS HUBERT WENDT, Manager of the Vereinigte Berlin Frankfurter
Gummi-Waaren Fabrik Gelnhausen, Germany, do hereby declare the nature of
this invention to be as follows:-
This invention relates to improvements in apparatus for controlling the flow of
acid or other liquid (hereinafter referred to as acid) to and from casks or other
receptacles (hereinafter referred to as tanks).
According to the said invention the acid is caused to flow past an automatic
valve into a tank or receptacle, the supply being cut off when the said tank is
sufficiently full by the automatic valve, whilst at the same time another valve
When the tank
admits compressed air to the tank so as to force out the contents.
is thus emptied the valves automatically shut off the air supply and re-admit the
acid.
In the accompanying drawings,
Fig. 1 is a part section showing an automatic piston valve with the adjacent parts
of the tank, during the admission of acid thereto.
Fig. 2 is a similar view showing the said valve in the position for admitting com-
pressed air to the tank and cutting off the acid supply.
A is the acid tank having a vertical outlet pipe B. To the cover of the tank A
is secured a casing C containing the valves E and F. The acid is supplied through
the pipe D from a vessel arranged at a higher level. The supply pipe D is con-
trolled by the valve E which is lifted by the pressure of the arriving acid into the
position shown in Fig. 1. The valve E is connected in any suitable manner, it
may be by a rod as shown, with the piston valve which, when in its raised position,
cuts off communication between the two parts G of the compressed air delivery
pipe, one of which is in communication with a reservoir, while the other leads to
the acid-cask. This arrangement works in the following manner :--
As soon as the freely arriving acid has risen in the pipe B of the cask A to
such a height that the pressure exerted by the inflowing acid underneath the
valve E becomes less than the weight of the valve, the valve E descends and with
it the piston valve F, to the positions shown in Figure 2, thereby cutting off the
acid supply and opening the air pipe. The compressed air thus admitted to the
tank forces the contents of the cask up the pipe B while the valve E is kept on
its seat by the air pressure on the upper surface of the valve. As soon as the
cask is empty, the air also passes through the pipe B thus relieving the pressure
in the tank. The return valve E now opens again under the action of the acid
supply in the pipe G and the cask is refilled the piston valve F rising with the
valve E and shutting off the compressed air. When the tank is filled as before the
supply is again automatically cut off and the compressed air admitted to empty
the tank.
Valves of any suitable forms other than those shown may be employed.
Deted this 3rd day of November 1892.

page_text: COMPLETE SPECIFICATION.
Improvements in Apparatus for Controlling the Flow of Acid or
other Liquid to and from Casks or other Receptacles.
I, ANDREAS HUBERT WENDT, Manager of the Vereinigte Berlin-Frankfurter
Gummi-Waaren Fabrik Gelnhausen, 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:—
This invention relates to improvements in apparatus for controlling the flow of
acid or other liquid (hereinafter referred to as acid) to and from casks or other
receptacles (hereinafter referred to as tanks).
According to the said invention the acid is caused to flow into a tank or
receptacle past a valve whereby the supply is automatically cut off when the said
tank is sufficiently full, whilst at the same time another valve is operated to admit
compressed air to the tank so as to force out the liquid contents thereof. When
the tank is thus emptied the valves automatically shut off the air supply and
re-admit the acid.
In the drawings filed with my Provisional Specification,
Fig. 1 is a vertical section of part of a tank provided with apparatus according
to this invention, the valves being in position to admit acid only to the tank.
Fig. 2 is a similar view to Fig. 1 but showing the valves in position to admit
compressed air only to the tank, the acid supply being cut off.
A is the acid tank having a vertical outlet pipe 13. To the cover of this tank
is secured a casing C containing a ball valve E and a piston valve F. The acid
is supplied through a pipe D from a vessel arranged at a higher level.
This supply
pipe D is controlled by the ball valve E which is lifted by the pressure of the
acid into the position shown in Fig. 1. The valve E is connected in any suitable
manner, it may be by a rod as shown, with the piston valve F which, when in its
raised position, cuts off communication between the two parts G of a compressed
air delivery pipe, one of these parts being in communication with a reservoir of
compressed air and the other with the acid-tank. The arrangement works in the
following manner :-
As soon as the freely arriving acid has risen in the pipe B of the tank A to
such a height that the pressure exerted by the inflowing acid underneath the
valve E becomes less than the weight of the valve, the valve E will descend and
with it the piston valve F, to the positions shown in Figure 2, thereby closing the
acid supply pipe D and opening the compressed air pipe G. The compressed air
thus admitted to the tank forces the contents of the cask up the pipe B while the
valve E is kept on its seat by the air pressure on its upper surface.
As soon as
the tank is empty, the air also passes through the pipe B thus relieving the
pressure in the tank. The return valve E now opens again under the action of
the pressure of the acid supply in the pipe D and the tank is refilled the piston
valve F rising with the valve E and shutting off the compressed air. When the
tank is filled as before the supply of acid is again automatically cut off and the
compressed air admitted to empty the tank.
Valves of any suitable forms other than those shown may be employed.
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:-
Apparatus for controlling the flow of acid and other liquids to and from casks
or other receptacles, comprising two pipes for admitting liquid and compressed air

page_text: to the cask or other receptacle and valves such as E and F adapted to
automatically open and close the said pipes alternately substantially as herein-
before described with reference to and shown in the drawings for the purpose
specified.
Dated this 28th day of November 1892
A. H. WENDT,
By L. W., per F. B.