Apparatus for Separating Dust from Air or other Gases
Year: 1895

page_text: Date of Application, 30th Apr, 1895
Complete Specification Left, 24th Dec, 1895-Accepted, 1st Feb,
1896
HAVE YADIUNAL DIECIFICATION
Apparatus for Separating Dust from Air or other Gases
I, JEREMIAH EUGENE MATHEWSON, 21 Northumberland Road, Sheffield, in
the County of York, Engineer do hereby declate the nature of this invention to be
as follows
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The dust or finely divided material made by cutting, grinding, pulverizing &c
in many manufacturing operations is often found injurious to the health of persons
both inside & outside of the factories, besides being more or less a nuisance to
the neighbourhood in which it is created
The object of this invention is to separate this dust from the atmosphere of the
working room or from that in the dust creating chamber and to collect same in a
simple & effectual manner
To accomplish this, I carry the dust laden air, by means of suitable pipes and fan or
other blowing and exhausting apparatus, underneath the surface of water and then
cause it to pass upward, through a horizontal perforated plate or plates, placed half
an inch or thereabouts below the surface of water, in numerous small bubbling
streams The result of thus breaking up the an into numerous small streams &
compelling them to pass through water, is to bung every particle of dust in
contact with the liquid by which they are instantly absorbed
Dated this 29th day of April 1895.
I JEREMIAH EUGENE MATHEWSON of 21 Northumberland Road, Sheffield,
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 more particularly to the sand-blast operation, in which
the dust or finely divided material produced by cutting, grinding, and pulverizing
hard substances, becomes disseminated in the air of the room where the process is
in operation, and in the adjacent neighbourhood, causing injury to the health of
persons both inside and outside of the factorie besides being more or less
nuisance to the neighbourhood in which the work is being carried on
invention is also applicable for use in other manufacturing operations
but the
Now, the object of this invention is to provide a simple and convenient
apparatus by means of which the dust produced in the manufacturing operation
15 separated from the atmosphere of the working 100m, or from that in the dust-
creating chamber, or elsewhere, and to collect same in a simple and effectual
manner
To this end, I carry the dust-laden air, by means of suitable pipes and a fan
or other blowing or exhausting apparatus, underneath the surface of water, and
then cause it to pass upward in numerous small bubbling streams, through a

page_text: honzontal perforated plate or plates, placed half an inch or thereabouts below the
surface of water
The result of thus breaking up the air into numerous small streams, and
compelling them to pass through water, is to bring every particle of dust in
contact with the liquid, by which they are instantly arrested, and fall to the
bottom of the vessel
In the accompanying drawing,
Fig 1 is an elevation, partly in section, and
Fig 2 is a section on the line 1-2 of Fig 1, of my improved apparatus
A is a cylindrical chamber, which has an inlet at B, an outlet at C, a sealed
overflow pipe D, a water inlet pipe E, a sight hole F, and an emptying door G, or,
it may be, a draw-off pipe
The inlet B is connected with a conical chamber H, the bottom of which is
closed by a plate H¹ This plate has a number of openings to receive short
pieces of pipe J, which may each descend into an inverted circular tray or
trough K, or collectively into a single tray oi trough K, of sufficient dimensions,
the bottom of which is formed of finely perforated metal
When the apparatus is to be worked, the vessel A is filled with water up to
the level of the overflow pipe D, which will be about half an inch above the
perforated bottoms of the trays K A vacuum is then produced in any convenient
manner in the upper part of the chamber A, and the dust-laden air will rush in
at B, to fill the vacuum, or the laden an may be forced in
The speed of the an will be such, that the air will be forced to descend into the
water, and as it can only escape through the perforated plate or plates, it will,
by reason of the fine perforations in the bottom of the inverted trays K, be broken
up, so that all the paiticles of dust it carries will be caused to come into absolute
contact with the water, and be arrested thereby
The dust particles will then gradually precipitate on the bottom of the vessel A,
and as they keep on collecting there, the water will gradually be displaced, and
1un off by the overflow pipe D
As soon as the collection of solid matters reaches as high as the sight hole F,
the exhaust will be stopped, the supernatant water will be run off by means of
the draw-off cock E' in the water pipe L, and then the mud will be removed
by the door G, or, it may be, by a suitable draw-off pipe in the bottom of the
vessel A
When the mud is removed, the dooi G is closed, the vessel A is again filled
with water up to the proper level, and the operation proceeds as before
It will be obvious that the above described apparatus will be equally applicable
for washing smoke, to arrest the solid particles, or for any other purpose where
it is desired to separate solid particles from an or other gases
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 15
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1 Apparatus for separating solid particles from air or other gases, in which the
volume of laden air is injected below the surface of water, and is bioken up into
numerous fine streams, so that all the solid particles come into absolute contact
with the water, and are arrested thereby, as heroin set forth
2 The apparatus for separating dust and other solid particles from air or other
gases, as heiein shown and described
Dated this 20th day of December 1895
NEWTON & SON,
Agents for the Applicant