Elevators for the Oleaning Material Used on Plane Sieves in Flour Mills.
Year: 1896

page_text: Date of Application, 10th Feb., 1896
Complete Specification Left, 19th Oct., 1896-Accepted, 25th Nov., 1895
PROVISIONAL SPECIFICATION.
Elevators for the Oleaning Material Used on Plane Sieves in
Flour Mills.
I, JULES DENIS, of Wygmael, Province of Brabant in the Kingdom of
Belgium, Civil Engineer do hereby declare the nature of this invention to be as
follows:-
Plane sieves as well as other sieves, require some device for keeping the meshes
of the sifting gauzes free from obstruction, and it has been found that grains or
little balls of some kind or other, such as Indian corn, seeds of acacia, or wooden
balls thrown on the sifting surfaces and rebounding through the rotating motion
of the sieve, will answer the purpose very well.
However, when a certain number of sieves is put, one above the other in the
Fame casing or frame, there is a great difficulty in bringing this cleaning material
back into the uppermost sieve, after it has reached the lowest one. A certain
number of cumbrous devices have been used for this purpose, all only partially
successful. The object of the present invention is to provide a simple device
for this purpose; it is fully described hereinafter with reference to the accompanying
drawings.
The essential feature of the invention is to adapt in one corner of the case
containing the set of sieves, a set of funnel-shaped receptacles S, arranged one
above the other, either along a direct oblique line, as shewn in Fig. 1 or along
oblique lines in alternate directions, as shewn in Fig. 2, or else superposed along a
central perpendicular line, as shewn in Fig. 3. The upper funnel is open at the
top, all the others are closed by a lid. This lid is provided with an opening,
the diameter of which is equal to the narrow end of the funnels. This set of
funnels is put in a corner of the casing containing the several sifting surfaces, so
as to start from the bottom of the lowest sieve, and to come out into the upper-
most one. The cleaning material, after having reached the lowest sieve along
with the sifting produce, enters into the lowest funnel through the opening T, the
clear space of which is smaller than the narrow end of the funnels. The rotating
motion of the machine now causes the cleaning material to elevate itself along the
inclined sides of the lowest funnel, until it comes to the opening of the second
funnel, into which it rises, until it comes to the third funnel, and so on, until it
comes out upon the gauze of the uppermost sieve. In Fig. 3 there is a double lid
to each funnel, the lower one having an opening T' through which the cleaning
material passes from the interior of the funnel into the space U which separates
the two lids. In this space U there is a vertical partition S', curved in the shape
of an epicycloid, in order to collect the cleaning material towards the centre of the
bottom of the next funnel, where it finds the corresponding opening T cut in the
side of the funnel, through which it enters, and begins the same course over again.
The partition S' is not to be seen in the elevation, but is visible in the horizontal
projection of Fig. 3.
Dated this 10th day of February 1896.
ABEL & IMRAY,
Agents for the Applicant.

page_text: Elevators for the Cleaning Material Used on Plane Sieves in
Flour Mills.
I, JULES DENIS, of Wygmael, Province of Brabant, in the Kingdom of
Belgium, Civil 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:-
Plane sieves as well as other sieves, require some device for keeping the meshes
of the sifting gauzes free from obstruction, and it has been found that grains or
little balls of some kind or other, such as Indian corn, seeds of acacia, or wooden
balls thrown on the sifting surfaces and rebounding through the rotating motiou
of the sieve, will answer the purpose very well.
However, when a certain number of sieves is put, one above the other in the
Bame casing or frame, there is a great difficulty in bringing this cleaning material
back into the uppermost sieve, after it has reached the lowest one. A certain
number of cumbrous devices have been used for this purpose, all only partially
successful. The object of the present invention is to provide a simple device for
this purpose; it is fully described hereinafter with reference to the drawings
accompanying my Provisional Specification.
The essential feature of the invention is to adapt in one corner of the case
containing the set of sieves, a set of funnel-shaped receptacles S, arranged one
above the other, either along a direct oblique line, as shewn in Fig. 1 or along
oblique lines in alternate directions, as shewn in Fig. 2, or else superposed along a
central perpendicular line, as shewn in Fig. 3. The upper funnel is open at the
top, all the others are closed by a lid. This lid is provided with an opening, the
diameter of which is equal to the narrow end of the funnels. This set of funnels is
put in a corner of the casing containing the several sifting surfaces, so as to start
from the bottom of the lowest sieve and to come out into the uppermost one. The
cleaning material, after having reached the lowest sieve along with the sifting
produce, enters into the lowest funnel through the opening T, the clear space of
which is smaller than the narrow end of the funnels. The rotating motion of the
machine now causes the cleaning material to elevate itself along the inclined sides
of the lowest funnel, until it comes to the opening of the second funnel, into which
it.rises, until it comes to the third funnel and so on, until it comes out upon the
gauze of the uppermost sieve. In Fig. 3 there is a double lid to each funnel, the
lower one having an opening T through which the cleaning material passes from
the interior of the funnel into the space U which separates the two lids. In this
space U there is a vertical partition S', curved in the shape of an epicycluid, in
order to collect the cleaning material towards the centre of the bottom of the next
funnel, where it finds the corresponding opening T cut in the side of the funnel,
through which it enters, and begins the same course over again. The partition S¹
is not to be seen in the elevation, but is visible in the horizontal projection of
. Fig. 3.
Having now particularly described and ascertained the nature of this inven
tion and in what manner the same is to be performed I declare that what I
claim is :-
In a rotating plane sieve having several superposed sifting surfaces, the meshes
of which are kept open through the use of granular or globular clearing material,
an elevator constructed of superposed funnel shaped receptacles such as S, the tops
of which are closed by lids having an opening by which each funnel communicates
with the next funnel above, which is provided with a corresponding opening at the

page_text: bottom, so that when the said clearing material has arrived at the lowest sieve or-
at the bottom of the set of sieves, it is conveyed up the said funnels back to the
uppermost sifting surface again, substantially as herein described.
Dated this 19th day of October 1896.
ABEL & IMRAY,
Agents for the Applicant.