An Improved Dust Collector and Steam Separator.
Year: 1890

page_text: Date of Application, 21st Feb., 1890
Complete Specification Left, 19th Nov., 1890-Accepted, 10th Jan., 1891
PROVISIONAL SPECIFICATION.
An Improved Dust Collector and Steam Separator.
1 GEORG KIEFER, of Feuerbach, near Stuttgart, in the Empire of Germany,
Engineer, do hereby declare the nature of my said invention to be as follows:-
The object of my invention is to manufacture an improved form and arrangement
of apparatus for separating dust from currents of air; the same apparatus being also
applicable for separating water from steam.
My invention consists of an inverted cone formed of metal and fitted with
chambers, pipes and other passages. The currents of air or steam enter the conical
case at the side of the upper (large) end, in a tangential direction. From thence
the currents are carried downwards, to near the apex, by means of an internal
chamber formed with longitudinal ribs or chambers, which are gradually narrowed
towards the lower end. The currents are then carried inwards and upwards to
suitable chambers and passages formed in, or in connection with, the upper part of
the apparatus.
In using my invention as a dust collector and separator, the particles of dust
existing in the air, come in contact with the walls of the apparatus, and, in con-
sequence of the reduced area of the passages, the dust becomes separated from the
air, the separation of the dust being effected through the motion of the air-currents
in a descending direction. The air is then caused to ascend to the upper part,
leaving the heavier particles of dust at the lower end of the apparatus, for collection
in suitable receptacles. The air is then carried away from above, and any fine
particles of dust carried away thereby may be similarly treated in another apparatus.
In using the invention as a steam trap or for separating water from steam, the
same process is carried out, and the water is collected and carried away from the
lower part of the apparatus, while the steam passes away from the upper part.
Dated this 21st day of February 1890
GEO.
DOWNING,
8, Quality Court, London, W.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
An Improved Dust Collector and Steam Separator.
I, GEORG KIEFER of Feuerbach, Stuttgart, Germany, 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 which has for its objects to effect in a small
space:
1. By the admission of steam, the separation and carrying away of the water
contained in the steam;
2. By the admission of a current of air, the separation of any dust floating in
that air, and the direct deposition of the same in bags or other receptacles without
employing any machinery with movable or working parts, or mechanism such as
worms, elevators, &c.
In the accompanying drawing
Fig. 1 illustrates the apparatus in longitudinal section, showing the arrangement of
the various compartments and connecting tubes.
Fig. 2 is an outside view of the apparatus.
Fig. 3 is a horizontal section through the lower part of the apparatus, and
Fig. 4 is a ground plan of the apparatus.

page_text: The apparatus consists of an outer casing, the upper part of which is cylindrical
while the lower part is conical and terminates in a spout at the bottom delivering
into bags or other receptacles the dust or water separated by the apparatus from
the air or steam respectively..
The cylindrical part of the outer casing is provided with a conical cover A and a
plate B, both of which have concentric openings, the opening in the plate B being
always larger than the opening in the conical cover A, and also larger in proportion
to the size of the apparatus.
In the opening of the plate B is fastened a tube C which extends downwards and
which has attached to it at its lower end a second plate B' parallel to the upper
plate B, but of smaller diameter, so as to leave a passage open all round between
itself and the outer casing of the apparatus.
From the periphery of the plate B' a hollow conical body E extends downwards
about one third of the length of the apparatus with its wall d parallel to the conical
part of the outer casing and quite open at its bottom end.
By this construction there is obtained between the outer casing of the apparatus
and the hollow cone E a narrow space which connects the compartment i formed
by the plates B and B with the space in the lower part of the conical casing.
In the concentric opening of the conical cover A a cylindrical exhaust tube F is
fastened and carried to the level of the lower plate B', so that with the before-
mentioned tube C it forms a passage K connecting the space in the hollow cone E
with the compartment L which is formed by the plate B and the conical cover A.
This compartment L is divided into six or eight chambers g, g¹-97 by means of
radial partitions, and to these six or eight chambers are fixed respectively six or eight
tubes n, nn' which are carried along the outside of the casing of the apparatus to
its lower extension O, into which they are conducted, thus connecting the compart-
ment L with the space in the lower part of the apparatus.
Now when either a current of air containing dust, or steam containing water,
enters the apparatus at the inlet H, it is conducted with a circulating motion from the
compartment i through the narrow space into the enlarged space, where in con-
sequence of the circulation along the outer casing, and expansion, the particles of
dust are separated from the air, or the water from the steam, after which they fall by
their own gravity through the outlet at the bottom of the apparatus, while the
purified air or the dry steam rises into the hollow cone E and escapes through the
exhaust tube F.
-
But as the rising current of air still carries with it at its extreme outer edge some
light particles of dust, that current of air is arrested at its periphery before leaving
the apparatus, by the projecting plate B', and, in consequence of the continuous
current, forced through the passage K into the chambers g, gg of the compart-
ment L, and from there through the tubes n, n¹-n' into the space O at the bottom of
the apparatus, where, in consequence of the lessened force of the current of air, the
fine particles are deposited, while the now completely purified air passes into the
neutral zone in the centre of the apparatus and escapes through the exhaust tube F.
The particles of dust or of water thus separated from the air or the steam
respectively are deposited directly in bags or any other receptacle which may be
attached to the spout at the bottom end of the apparatus.
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, in an apparatus for the separation of dust from air, or of water from
steam:
1. The combination with a casing of partly cylindrical and partly conical shape, of
the conical cover A and the two parallel plates B and B¹, with the interior hollow
cone E, dividing the interior of the apparatus into three compartiments substantially as
described and for the purpose specified.
2. The combination with a casing of partly cylindrical and partly conical shape, of
the inuer cone E extending downwards and parallel to the wall of the conical part of

page_text: the outer casing, forming a narrow passage between the compartments i and ♬ sub-
stantially as described and for the purpose specified.
3. The division of the upper compartment I, into several chambers by means of
radial partitions and the tubes connecting the compartment L with the space O at the
lower end of the apparatus, substantially as described and for the purpose specified.
Dated this 4th day of November 1890.
GEORG KIEFER.