Improved Regulated Liquid Trap for the Gas Delivery Pipes of Acetylene Gas Generators.
Year: 1899

page_text: Date of Application, 11th Nov., 1899-Accepted, 30th Dec., 1899
COMPLETE SPECIFICATION.
Improved Regulated Liquid Trap for the Gas Delivery Pipes of
Acetylene Gas Generators.
I, Doctor ALFRED STERN, of No. 34, Alexanderstrasse, Berlin, Director, do
hereby declare the nature of my said 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 automatically regulated liquid trap common to
all gas delivery pipes of acetylene gas generators. When employing the well
known liquid traps for several acetylene gas generators, which are arranged
either apart from one another or in one common water receptacle, it is of
moment that the depth of immersion for the gas delivery pipes of the generators
in the common gus collecting chamber containing the liquid forming the trap
is as small as possible and is kept perfectly constant.
This condition is by no means fulfilled by the ordinary liquid traps, which
serve at same time as a trap for the gas collecting chamber, since the unavoid-
able continual fluctuations of the gas pressure also lead to a constant variation
of the water level. Consequently with these known liquid traps, a large depth
of immersion of the gas delivery pipes has to be arranged, in order that with
a correspondingly high gas pressure, the ends of the gas delivery pipes shut off
by the liquid may not be uncovered. This large depth of immersion increases
The dimensions of the apparatus and has the disadvantage that the pressure in
the generator or generators is unnecessarily increased.
The object of this invention is to remove this defect of the known acetylene
gas generators with liquid trap by employing a liquid trap having a constant
water level, on which the varying pressure of the gas in the collecting chamber
cannot act.
On the accompanying drawing a sectional view of that part of an acetylenc
gas generator is shown which is sufficient for illustrating this invention.
The gas delivery pipes a of the single generators (not shown) lead through
the cover or lid of the box or receptacle & serving as collecting chamber for
the gas and from which the gas is fed through a delivery pipe c to the main
supply. At the bottom of the box is contained the liquid d forming the trap
in which liquid the ends of the pipes a immerse or dip to only a comparatively
small extent. The level of the liquid d is not subjected to any fluctuations
caused by the varying gas pressure, so that notwithstanding the small depth of
immersion of the pipes, the latter are always more securely shut off by the
liquid Since by feeding condensed water through the pipes a the level of
the liquid can undergo a change, it is preferable to arrange in the height
of the normal water level an overflow pipe c, whose lower end is always slut
off by the liquid in the vessel ƒ.
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 In a liquid tran for accivlene was venerators the combination of

page_text: holder with the pipes a leading from the acetylene gas generators and extend-
ing below the level of the liquid forming the trap and with the gas outlet
pipe, substantially as described and for the purpose set forth.
2/ In a liquid trap for acetylene gas generators, the combination of a gas
holder with the pipes a leading from the acetylene gas generators and extend-
ing below the level of the cut-off liquid and with the gas outlet pipe c and an
overflow pipe c, substantially as described and for the purpose set forth.
Dated this 11th day of November 1899.
ALLISON BROS.,
Agents for the Applicant.