An Improved Apparatus for Washing Granular and Pulverulent Materials, and Removing Stones and the like therefrom.
Year: 1893

page_text: Date of Application, 24th Jan., 1893
Complete Specification Left, 2nd Mar., 1893-Accepted, 2nd June, 1893
PROVISIONAL SPECIFICATION.
An Improved Apparatus for Washing Granular and Pulverulent
Materials, and Removing Stones and the like therefrom.
I, FRÉDÉRIC BRANDSTAEDTER, of 219 Rue de Malines, Louvain, in the Kingdom
of Belgium, Maltster, do hereby declare the nature of this invention to be as
follows:-
-
My invention relates to apparatus for washing and removing stones from granular
and pulverulent materials.
The improved apparatus differs from apparatus of the same class by the absence
of all mechanical movement.
The washing and removal of stones from the material to be cleaned are effected
by means of currents of water which circulate in the apparatus.
The grain or other material which is to be washed or from which the stones are
to be removed is introduced into a hopper whence it drops like rain upon a cone. Its
passage is regulated by means of a sleeve provided with a screw placed at the lower
part of the hopper and which may be moved more or less towards a disc beneath.
The water passes through a pipe into an outer cone in which the current of water
is divided into two parts, one flowing through a central pipe and the other between
the aforesaid outer cone and a second inner cone. The object of the inner cone is
to equally distribute the water, that is to say cause the current to pass out with
equal force through the space between the outer and inner cones. The current
which flows through the central pipe is regulated by a disc provided upon a screw
threaded rod fixed to the said pipe. The regulation is effected by turning this disc
in one or the other direction. The object of the current rising through the central
pipe is to carry away the grain into that which passes between the said two cones.
If the second current did not exist the grain falling from the hopper on to the
first-mentioned cone and encountering the current escaping between the two cones
would remain upon the said cone. By reason of the almost equal density of the
grain and of the water this grain is carried away by the two currents meeting above
the upper periphery of the outer cone, but the stones and other heavier materials
pass between the outer and inner cones and are discharged through the lower part
of the outer cone which is open. The grain and water passing above the outer
cone drop into an annular crown. This crown has at its lower part inclined vanes
similar to those of turbines. This arrangement serves to give to the current of
water which drops into a vessel surrounding the above-mentioned cones a gyratory
movement which is communicated to the surface of the water contained in this vessel.
This has for its object to discharge through an overflow pipe the foreign materials
which are lighter than water, whilst the grain which is heavier passes to the bottom
and leaves with the other part of the water through a pipe in order to pass to the
drying apparatus. The quantity of water which has to pass through the said over-
flow pipe and the pipe at the lower part of the outer vessel is regulated by means
of a slide valve and screw.
لسيد
1
T
1000
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.

page_text: COMPLETE SPECIFICATION.
An Improved Apparatus for Washing Granular and Pulverulent
Materials, and Removing Stones and the like therefrom.
I, FRÉDÉRIC BRANDSTAEDTER, of 219 Rue de Malines, Louvain, in the Kingdom
of Belgium, Maltster, 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:―
My invention relates to apparatus for washing and removing stones from granular
and pulverulent materials.
The improved apparatus differs from apparatus of the same class by the absence
of all mechanical movement.
The washing, and removal of stones from the material to be cleaned are effected
by means of currents of water which circulate in the apparatus.
In the accompanying drawings:-
Figure 1 shows a vertical section of my apparatus, and
Figure 2 is a plan of the same.
The grain or other material which is to be washed or from which the stones are
to be removed is introduced into a hopper A. whence it flows upon a cone B.
Its passage is regulated by means of a sleeve C provided with adjusting screws
and placed at the lower part of the hopper and which may be moved more or less
towards a disc D below said hopper. The water passes through a pipe F into an
outer cone E in which the current is divided into two parts, one flowing through a
central pipe G and the other between the aforesaid outer cone E and a second inner
cone H as indicated by the arrows. The object of the inner cone H is to equally
distribute the water, that is to say, to cause the current to pass out with equal
force through the space between the outer and inner cones E and H. The current
which flows through the central pipe G is regulated by a disc I provided upon a
screw threaded rod J fixed to the said pipe. The regulation is effected by turning
this disc in one or the other direction. The object of the current rising through
the central pipe G is to carry away the grain which passes between the said two
cones, E and H. If the second current did not exist the grain falling from the
hopper on to the first-mentioned cone and encountering the current escaping
between the two cones E and H would remain upon the said cone B. By reason
of the almost equal density of the grain and of the water this grain is carried away
by the two currents meeting above the upper periphery of the outer cone E, but
the stones and other heavier materials pass between the outer and inner cones E
and H and are discharged through the lower part of the outer cone E which is
open. The grain and water passing above the outer cone E drop into an aunular
space K. This space has at its lower part inclined vanes S similar to those of
turbines. This arrangement serves to give to the current of water which drops
into a vessel L surrounding the above-mentioned cones a gyratory movement which
is communicated to the surface of the water contained in this vessel. This has for
its object to discharge through an overflow pipe M the foreign materials which are
lighter than water, whilst the grain which is heavier passes to the bottom and
leaves with the other part of the water through a pipe N in order to pass to the
drying apparatus. The quantity of water which has to pass through the said
overflow pipe M and the pipe at the lower part of the outer vessel is regulated by
means of a slide valve O, and screw P.
I do not however confine myself to apparatus of a round shape, but any other
suitable form may be used providing that the construction is based on the same
principle.

page_text: 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 apparatus for washing, and removing stones, with a double current of water,
as herein before described, provided with an annular space having vanes which impart
a gyratory movement to the liquid contained in the vessel, the arrangement of the
overflow pipe and lower slide valve, and its arrangement of cones between which
the stones pass as hereinbefore described and specified.
Dated this 2nd day of March 1893
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.