Apparatus for Drawing Off Determined Quantities of Liquid Carbonic Acid or Compressed Gases or Vapours.
Year: 1899

page_text: Date of Application, 9th Sept., 1899-Accepted, 18th Nov., 1899
[Communicated from abroad by WILHELM FRIEDRICH FRITZ, Mechanician, Lini-
matstrasse 75, Zürich, and HENRY ACHILLES ALIOTH, Merchant, Gerber-
gasse, 42 Basle, both in the Republic of Switzerland.]
Apparatus for Drawing Off Determined Quantities of Liquid Carbonic
Acid or Compressed Gases or Vapours.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for Foreign
Patent Solicitors, 322, High Holborn, in the County of Middlesex, 6, Lord
Street, Liverpool, and 6, Bank Street, Manchester, both in the County of
Lancaster, and Lower Temple Street, Birmingham, in the County of Warwick,
Civil Engineer, 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 has for its object an apparatus for drawing off deter-
mined quantities of liquid carbonic acid or of high pressure gases or vapours
from a source of supply into vessels, such as bottles with incidental reduction
of pressure. For this purpose a chamber of fixed capacity is closed in by two
valves which valves by means of a mechanism common to both can be adjusted
simultaneously in opposite directions. This chamber, in one position of the valves
is open towards the source of supply and closed towards the vessel destined or
intended to receive the carbonic acid or other gas or vapour, and in the other
position of the valves the chamber is closed towards the source of supply and open
towards the said vessel. The change in the position of the valves, however, takes
place suddenly, and so that the one valve is always closed before the other is
opened. The apparatus may be suitably utilized in the preparation of effervescing
beverages, for instance of beverages containing carbonic acid.
The accompanying drawing illustrates in vertical section the object of the
invention. The part a¹ of the casing a is to be placed in connection with the
source of supply (carbonic acid bottle) and the vessel b (for instance a bottle
partially filled with water) is to be joined gas-tight to the portion a² of the
casing. In the casing a, two valves cc having gas tight washers are arranged
co-axially under spring pressure. The chamber situated between these two
valves c c possesses a capacity proportionate to the quantity it is desired to draw
off. The simultaneous action of the valves is obtained by means of the gear-
ing e e and the eccentrics f f¹, the position of the latter being such that when
one for instance the lower one holds open the valve c¹ belonging to it, the other
for instance the upper one allows its valve to close and vice versa: the closing
force of the spring is aided by the pressure of the gas liquid or vapour. In the
position illustrated of the eccentrics f fl and valves c c¹ it is supposed that the
connection between the chamber d and the source of supply has been closed and
that between chamber d and the vessel b opened. The contents of the chamber
discharge into the vessel b through the narrow aperture a which temporarily
reduces the pressure to the desired amount. After drawing off the contents of
the chamber d, the valves c c are turned by the gearing e e¹ and the eccentrics ff1

page_text: actuated by the crank g so that the connection between the chamber d and the
source of supply is effected and that between the chamber d and the vessel b is
closed. The chamber now fills afresh with a fixed quantity of gas liquid or vapour
in order to discharge it into the vessel b at the next change of position of the valves
and so on.
The turning of the valves c c from one position into the other is effected
suddenly as the eccentrics operate them or release them to the influence of the
springs hh. As the closing of each valve always takes place at the beginning
and the opening thereof at the end of half a revolution of the eccentrics f f¹, the
one valve is already shut when the other opens consequently preventing a free
current of carbonic acid or the like from passing through the chamber. The
temporary reduction of pressure caused by the narrow opening a suffices for
the purpose in view, namely the charging of the water in the bottle with gas
without exceeding the resisting power of the glass vessel to the gas pressure,
as the valves are not open long enough' for the pressure to equalise.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, as communicated to me
by my foreign correspondents, I declare that what I claim is:-
1. An apparatus for drawing off determined quantities of liquid carbonic acid,
compressed gases or vapours with incidental diminution of its pressure
characterized by the arrangement that a chamber of fixed capacity is shut off
by valves movable in opposite directions by means of a common controlling
mechanism, said chamber being open in one position of the valves towards the
source of supply of liquid carbonic acid, compressed gas or vapour and closed
towards the vessel destined to receive the carbonic acid or other gas or vapour,
and in the other position of the valves being open towards the vessel and closed
towards the source of supply of carbonic acid, gas or vapour.
2. The improved pressure-reducing and delivery mechanism substantially as
described and shewn in the accompanying drawing.
Dated the 9th day of September 1899.
W. P. THOMPSON & Co.,
322, High Holborn, London, W.C., Patent Agents for the Applicant.