Apparatus for Ascertaining the Volume of a Particular Gas in a Gaseous Mixture, and for Ascertaining the Weight of Gases.
Year: 1892

page_text: Date of Application, 27th Dec., 1892
Complete Specification Left, 27th Sept., 1893-Accepted, 4th Nov., 1893
PROVISIONAL SPECIFICATION.
Apparatus for Ascertaining the Volume of a Particular Gas in a
Gaseous Mixture, and for Ascertaining the Weight of Gases.
I, MAX ARNDT of Monheimsallee, Aachen, in the German Empire, Engineer,
do hereby declare the nature of this invention to be as follows:-
This invention relates to an apparatus in which a gas balance provided with a
gas container open at bottom is enclosed in an air tight casing through which the
gases to be weighed or of which a portion is to be measured, are drawn, thereby
operating without resistance and therefore with great sensitiveness. A hollow
vessel is fixed underneath the gas container into which a fixed gas supply pipe is
led, the different parts being so located that upon the oscillation of the balance
beam and therewith the gas container this latter may move freely up and down
without coming in contact therewith. The casing has an inlet for the gas pro-
ceeding to the container and an outlet for the gas passing from the container, one
or more panes of glass for the purpose of observation and suitable air tight doors
or plugs for access to the apparatus, admission of air, etcetera.
The gases are
drawn slowly through the apparatus by any suitable suction apparatus by which
also the air in the casing is rarefied. A pointer on the balance beam indicates on
a divided plate or scale so as to indicate either units of weight or a particular
per centage volume of a certain gas of a gaseous mixture for instance the volume
of carbonic acid in smoke gas. The fluctuations in the volume of the gases taking
place within the gas container by reason of the up and down motion of this latter
are kept in view on the scale. The gas container carried at one end of the balance
beam is balanced by a compensating vessel also open at bottom at the other end of
the beam, or by weights.
Dated this 27th day of December 1892.
CAPITAINE & VON HERTLING,
89, Chancery Lane, London, W.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
Apparatus for Ascertaining the Volume of a Particular Gas in a
Gaseous Mixture, and for Ascertaining the Weight of Gases.
I, MAX ARNDT of Monheimsallee, Aachen, in the German Empire, 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 :-
This invention relates to an apparatus in which a gas balance provided with a
gas container open at bottom is enclosed in an air tight casing through which the
gases to be weighed or of which a portion is to be measured, are drawn, the
gas balance thereby operating without resistance and therefore with great
sensitiveness.
The apparatus is shewn in part sectional elevation in the accompanying
drawing.
a is the air tight casing, b a balance beam carrying at one end a balanced gas
container of any suitable form but open at the bottom and which may with
advantage be provided with a neck c¹. g is a hollow vessel placed underneath gas
container c, holding in a fixed position a gas supply tube f and formed with a gas
outlet, these parts being so located that upon the oscillation of balance beam 6 the
gas container may move freely up and down without coming in contact therewith.
DQ77

page_text: The gas tube f projects upwards into the gas container. The air tight casing is
provided with one or more panes of glass for the purpose of observation. It has
two tubular orifices one for the inlet and the other for the outlet of gases, the
former connecting by a flexible tube g' with gas supply tube f and the latter
connecting with the outlet of vessel g.
The source of the gas supply being in communication with inlet ', the outlet
is placed in communication with a suction apparatus of any suitable kind and a
portion of the air present in the casing drawn off, that is to say, this air is
exhausted to so much of a vacuum as corresponds to the strength of the suction at ³.
This rarefaction being obtained the gases to be dealt with can only pass into the
apparatus by inlet tube i thence passing through tube q' and tube out of this
latter through perforations 2 at the top into the gas container which they fill and
out of the same in the direction shewn by the arrows to pass out of the apparatus
through outlet under the influence of suction, or the gases may be passed through
the apparatus in the reverse direction entering at and leaving at i¹. p is a
pointer fixed in beam b so as to follow its movements, oscillating in front of a
scales which may be carried in a frame r so as to be removable therefrom. The
scale is divided either so as to indicate units of weight by the distances between
its dividing lines or so that these distances shall indicate a particular percentage
volume of a certain gas of a gaseous mixture; for example, in the drawing the
scale is shewn divided to indicate the percentage volume of carbonic acid, for
the purpose of indicating the percentage of carbonic acid in smoke gases. The
fluctuations in the volume of the gases taking place round fixed tube f by reason of
the up and down motion of the gas container c are kept in view on scale s.
gas container c is so balanced either by a compensating vessel ³ also open at the
bottom and equivalent in its capacity for upward driving, in conjunction with
small weights d or wholly by the latter, that pointer p in beam & moves to zero
when atmospheric air is drawn through the apparatus.
The
For the purpose of performing the balancing operation quickly and conveniently
the casing is provided with an aperture closeable by a block or plate v upon the
removal of which the weights may be added to or some of them removed as
required, further at the top of the casing there is an aperture to fitted-with a plug
for the occasional admission of atmospheric air thereto.
The gas container e being open at the bottom so that the pressure within it is
always the same as that without, fluctuations of pressure and barometrical readings
have not to be considered in the use of this apparatus, likewise fluctuations of
temperature do not affect its action because the gases passing slowly through the
-apparatus take the temperature prevailing in the small gas passages.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
· claim is :-
The general construction, arrangement, and combination. of parts constituting
an apparatus for ascertaining the volume of a particular gas in a gaseous
mixture and for ascertaining the weight of gases, substantially as described and
-shewn.
Dated this 27th dor of Sentember 1902
CAPITAINE & VON HERTLING,
.89, Chancery Lane, London, W.C., Agents for the Applicant.