Improvements in or relating to Machinery for Cleaning Grain and the like.
Year: 1899

page_text: Date of Application, 15th Sept., 1899
}
Complete Specification Left, 22nd Sept., 1899-Accepted, 4th Nov., 1899
Improvements in or relating to Machinery for Cleaning Grain and
the like.
I, CHARLES EDWARD MUMFORD, of 90, Risby Gate Street, Bury St. Edmunds,
in the County of Suffolk, Engineer, do hereby declare the nature of this inven-
tion to be as follows:-
This invention relates to machinery for cleaning grain and the like, and
has for its object to construct an improved form of grid which can be easier.
cleansed than that hitherto made.
According to this invention in place of the round wire hitherto employed.
for this purpose I use wire having a flat surface, the section of the wire being
preferably triangular, semi-circular or flat. In winding the wire upon the stays
when forming for example a cleaning drum or cylinder, I arrange the wire.
in such a way that the flat surface lies on that side which will be subjected
to the cleaning action of the cleaning brush or roller. With this arrangement
a roller is equally if not more effective than a brush for the purpose of keeping
the grid clean, this feature being a great advantage, inasmuch as a roller will
last considerably longer than a brush.
manner;
I may secure the wire to the supporting stays or ribs in any convenient.
preferably do this, however, by winding the wire into slots or cuts
in the stays, and afterwards rivetting the latter over the flat face of the wiie.
Though as above mentioned I may employ wire having any cross section'
consistent with one flat surface, I prefer to employ wire with a triangular cross
section, as when two wires of this type are laid side by side, owing to the
tapering adjacent edges of the wires, the liability of the material under treat-
ment becoming wedged between the wires, is reduced to a minimum.
It will be understood that the above described improvement is applicable to
various forms of sieve and cleaner whether cylindrical, curved or flat.
Dated this 15th day of Santamber 1800
:
:
Improvements in or relating to Machinery for Cleaning Grain and
the like.
I, CHARLES EDWARD MUMFORD, of 90, Risby Gate Street, Bury St. Edmunds,
in the County of Suffolk, Engineer, do hereby declare the nature of this inven-
[Price 8d.1

page_text: tion, 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 machinery for cleaning grain and the like, and
has for its object to construct an improved form of grid or of wire barrel which
can be easier cleansed than that hitherto made.
According to this invention in place of the round wire hitherto employed
for this purpose I use wire having a flat surface, the section of the wire being
preferably triangular, semi-circular or flat. In winding the wire upon the stays
when forming for example a cleaning drum or cylinder, I arranged the wire
in such a way that the flat surface lies on that side which will be subjected
to the cleaning action of the cleaning brush or roller. With this arrangement
a roller is equally if not more effective than a brush for the purpose of keeping
the grid clean, this feature being a great advantage, inasmuch as a roller will
last considerably longer than a brush.
}
I may secure the wire to the supporting stays or ribs in any convenient
manner; I preferably do this, however, by winding the wire into slots or cuts
in the stays, and afterwards rivetting the latter over the flat face of the wire.
Though as above mentioned I may employ wire having any cross section
consistent with one flat surface, I prefer to employ wire with a triangular cross
section, as when two wires of this type are laid side by side, owing to the
tapering adjacent edges of the wires, the liability of the material under treat-
ment to become wedged between the wires, is reduced to a minimum.
It will be understood that the above described improvement is applicable to
various forms of sieve and cleaner whether cylindrical, curved or flat.
In the accompanying drawings
Figure 1 is a perspective view of a portion of a sieve constructed in accordance
with this invention.
Figure 2 is a transverse section of the same.
Figure 3 is a transverse section of a portion of the sieve drawn to an enlarged
scale.
Like letters indicate like parts throughout the drawings.
or
The wire which I employ is preferably formed of triangular cross section
with a flat face A arranged on that side with which the cleaning brush or
roller comes in contact. In constructing the sieve I cut in the sides
supports B notches corresponding in sliape to the cross section of the wire, the
notches being spaced in accordance with the fineness it is required to give the
sieve. The wire is wound on to the stays B in such a manner that the points A¹
of the triangles lie in the notches in the stays B, the flat faces A. being directed
outwardly. The wire is retained in place by rivetting over the parts B¹ of the
stays, which lie between the wires. The above description applies more parti-
cularly to the construction of cylindrical sieves but by modification the same
plan may be employed in the construction of flat, curved or other types of
sieves or cleaners.
!
By employing wire of the above described type, there is small risk of the
material under treatment becoming wedged between the wires, as the hold which
the adjacent edges A2 of any two wires tend to have on a fragment of material
is very slight owing to the fact that the width of the wire decreases from the
face A to the back. With a sieve constructed in accordance with this invention
I prefer to employ a roller for the purpose of clearing or cleaning the sieve in
place of the brushes hitherto used, as, owing to the form of the wires, the roller
cleans the sieve as effectively as a brush while lasting longer than the latter.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is :-
1. A sieve or a cylindrical screen for use in cleaning grain and the like ‹

page_text: formed of wire having a flat face such as A the width of the wire decreasing
from the face to the back for the purpose described.
2. A sieve or a cylindrical screen for use in cleaning grain and the like
formed of wire of triangular or similar cross section such that the width of the
wire decreases from a flat face such as A to the back for the purpose described.
3. A sieve or a cylindrical screen for use in cleaning grain and the like
formed of wire of triangular or similar cross section arranged and operating
substantially as and for the purpose described or illustrated in the accompanying
drawings.
Thatod this 92nd day of Santambor 1800
BOULT, WADE & KILBURN.
Agents for the Applicant.