Improvements in Apparatus for Use in the Treatment of Gas.
Year: 1888

page_text: Date of Application, 21st Nov., 1888
Complete Specification Left. 19th Aug., 1889-Accepted, 28th Sept., 1889
PROVISIONAL SPECIF
TION.
Improvements in Apparatus for Use in the Treatment of Gas.
We, JOSEPH EMERSON DOWSON and ALFRED Dowson, both of 3 Great Queen
Street, Westminster, in the County of Middlesex, Civil Engineers, do hereby declare
the nature of our invention to be as follows:-
This invention relates to the treatment of heating or lighting gas and consists of a
washer in which the gas is passed through water and of a scrubber in which the gas
is passed through sawdust or other suitable filtering material.
The washer is a closed box divided by vertical partitions into chambers of which
there may be two or more. Each of these chambers is charged with water up to a
certain level, and in order to renew the water and at the same time maintain its
proper level a constant supply is run in and the excess is allowed to run out
through a suitable overflow.
A special feature of the washer is that the water is introduced by or through the
same pipe which carries the washed gas away from the washer. To carry the feed
water into the chamber into which the gas first enters, a partition is arranged to cut off
a small part of the side of the chamber next the outlet and of any other intermediate
chamber, and the portion or channel so cut off is in communication with the first
chamber, a trough carrying the water from the pipe into the channel whence it
into the first chamber.
passes
overflows into the second
After the water has passed into the first chamber
chamber through an elbow pipe and the level of the water in the second chamber is
controlled by the position of the outlet pipe. The gas inlet pipe passes down into
the first chamber and is sealed by the water therein, the gas bubbles through the
water and is carried into the next chamber by the elbow pipe before referred to, the
end of which is also sealed by the water in the second chamber and the gas then
bubbles up through the water in this chamber and passes thence to the outlet or
through other chambers in the same manner, if there be such, until the outlet is
eventually reached.
The scrubber is constructed as follows:
In a suitable closed case are fixed or supported vertically one or more pairs of
gratings or perforated partitions of any suitable material, but preferably of wood.
The space between each pair of partitions or gratings is filled with sawdust or other
suitable material for filtering the gas. The gas inlet is on one side of the scrubber
and the gas outlet on the other side so that the gas must pass through one or
more walls of sawdust or other filtering material on its way from the inlet to the
outlet. Above and below each of the filtering compartments are doors or movable
plates through which the sawdust or other filtering material may be inserted or
removed.
The washer and scrubber can be used together or sometimes the washer alone may
be used and sometimes the scrubber alone.
Dated this 21st day of November 1888.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Use in the Treatment of Gas.
We JOSEPH EMERSON DOWSON and ALFRED DOWSON both of 3 Great Queen
Street Westminster in the County of Middlesex, Civil Engineers 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 the treatment of heating or lighting gas and consists of a

page_text: washer in which the gas is passed through water and of a scrubber in which the gas
is passed through sawdust or other suitable filtering material.
The washer is a closed box divided by vertical partitions into chambers of which there
may be two or more. Each of these chambers is charged with water up to a certain
level and in order to renew the water and at the same time maintain its proper level a
constant supply is run in and the excess is allowed to run out through a suitable
overflow. A special feature of the washer is that the water is introduced by or
through the same pipe which carries the washed gas away from the washer. To carry
the feed water into the chamber into which the gas first enters, a partition is arranged
to cut off a small part of the side of the chamber next the outlet and of any other
intermediate chamber and the portion or channel so cut off is in communication with.
the first chamber, a trough carrying the water from the pipe into the channel whence
it passes into the first chamber.
After the water has passed into the first chamber it overflows into the second
chamber either through the elbow pipe by which the gas passes from the one chamber
to the other or through an adjustable overflow pipe and if there be more than two
chambers, the water overflows from each chamber to the next in series in a like
manner until the last chamber is reached, the water overflowing from the second
chamber if there be but two chambers as aforesaid or from the last of the series
of chambers by an adjustable overflow or waste pipe. The level of water in each
chamber is therefore controlled by the respective position of the elbow pipe or of the
adjustable overflow pipe.
The gas inlet pipe passes down into the first chamber and is sealed by the water
therein, the gas bubbles through the water and is carried into the next chamber by the
elbow pipe before referred to, the end of which is also sealed by the water in the
second chamber and the gas then bubbles up through the water in this chamber
and passes thence to the outlet or through other chambers in the same manner if
there be such until the outlet is eventually reached.
The scrubber is constructed as follows:-
In a suitable closed case are fixed or supported vertically one or more pairs of
gratings or perforated partitions of any suitable material but preferably of wood.
The space between each pair of partitions or gratings is filled with sawdust or other
suitable material for filtering the gas.
The gas inlet is on one side of the scrubber and the gas outlet on the other side so
that the gas must pass through one or more walls of sawdust or other filtering material
on its way from the inlet to the outlet. Above and below each of the filtering
compartments are doors or movable plates through which the sawdust or other filtering
material may be inserted or removed.
The washer and scrubber can be used together or sometimes the washer alone may be
used and sometimes the scrubber alone.
The accompanying drawing illustrates the preferred method of carrying the afore-
said invention into practice Fig. 1 being a section of the washer on line A B,
Figs. 2 & 3. Fig. 2 a vertical section of the washer on line C D Figs. 1 and 3.
Fig. 3 a section on line E. F Figs. 1 and 2. Fig. 4 is a horizontal section of the
scrubber on line G H Fig. 5 and Fig. 5 is a vertical section of the same on line J K
Fig. 4.
The washer a shown has two chambers at and a²: f is the gas inlet pipe. 9 the
elbow pipe between the chambers. b the gas outlet pipe. d is the trough leading
the water entering at or by the pipe 6 into the lateral chamber or passage way e by
which the water passes to the first chamber, this passage way being divided off from
the chamber a² by the wall c..
The water may be allowed to pass from the chamber a¹ to the chamber a² by or
through the elbow pipe g but we prefer to arrange an adjustable overflow pipe for
this purpose. Such a pipe is shown in the drawing; part of the wall separating the
chambers a¹ and a² is set hack or forward as the case may be to form a horizontal
portion at a suitable height above the floor of the washer not greater than the least
depth of water desired, the upper face of this horizontal portion being in the

page_text: chamber at the other or lower face in the chamber a². Through this horizontal
portion passes the vertical screw threaded pipe h open above and below fixed if
desired by a set nut so that its upper rim is at the level desired for the water in
the chamber a'. To enable this pipe to be adjusted a door i is made in the wall.
The overflow waste pipe j from the second or last chamber a² is similar in principle,
the method of applying it will be readily understood from Fig. 3.
In cases when it is impossible or not desirable to allow the water to flow into the
washer through the gas outlet pipe the water may be carried by direct supply
to the chamber a' and the passage way e and trough d will then be dispensed
with.
In the scrubber shown are two pairs of perforated partitions Illl enclosed within
the case k, m is the inlet n the outlet. These may he placed near the bottom or at
any desired position at the sides or there may be more than one inlet and outlet.
Their orifices into the scrubber may be guarded by baffle plates as a means for
better distributing the gas in the well known way. 0, 0, 0, 0, are doors for emptying
and cleaning the scrubber.
our said
Having now particularly described and ascertained the nature of
invention and in what manner the same is to be performed we declare that what
we claim is.
1. A gas washer consisting of two or more chambers, the gas inlet being sealed
in water in the first chamber and the gas communications between the chambers each
sealed in water in the respective succeeding chambers, an adjustable or other water
overflow pipo or pipes connecting the first or each chamber with the second or
successive chamber and an adjustable or other water overflow waste pipe from the last
chamber substantially as set forth.
2. A gas washer consisting of two or more chambers, the gas inlet being sealed in
water in the first chamber and the gas communications between the chambers each
sealed in water in the respective succeeding chambers and having a water inlet coin-
ciding with the gas outlet from the last chamber, a passage way, whereby the water is
conducted from the said water inlet to the first chamber an adjustable or other water
overflow pipe or pipes connecting the first or each chamber with the second or
successive chamber and an adjustable or other water overflow waste pipe from the last
chamber substantially as set forth.
3. A gas scrubber consisting of a case or chamber with pairs of vertical, perforated
and parallel partitions the space between each pair being filled with sawdust or other
scrubbing material and having a gas inlet or inlets and gas outlet or outlets the whole
constructed substantially as illustrated and described.
Dated this 10th day of Anou 1000
HERBERT & Co.,
18, Buckingham Street, Strand, London, W.C., Agents to Applicants.