Improvements in Apparatus for Drying and Disinfecting Cereals and other Granular or Subdivided Materials.
Year: 1891

page_text: Date of Application, 28th Mar., 1891
Complete Specification Left, 22nd Dec., 1891-Accepted, 30th Jan., 1852
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Drying and Disinfecting Cereals and
other Granular or Subdivided Materials.
1, PAOLO BORGARELLI, of Turin, in the Kingdom of Italy, do hereby declare
the nature of this invention to be as follows:-
My invention relates to a continuously acting drying apparatus with air circula-
tion applicable to granular or subdivided materials, specially adapted for drying and
seasoning cereals with or without means of disinfecting.
The principal feature of my invention is in the form and arrangement of
diaphragms and passages so as to effect continual mixture of the materials and
expose
all parts of them uniformly to the air.
shall describe drying apparatus according to my invention referring to the
accompanying drawings.
Fig. 1 is a vertical section, Figs. 2 and 3 are sectional plans on X X and Y Y
respectively.
Fig. 4 is a sectional plan of the upper part.
Figs. 5, 6 and 7 shew details.
The apparatus consists of a chamber which may be of rectangular or circular
section divided into several superposed compartments.
The uppermost A for feeding has at its bottom several funnels a which conduct
the material into C. Under the funnels a there is a chamber B where collects the
air which has passed through the apparatus, and whence it is discharged by an
orifice which may have a chimney or other appliance connected to it for
draught.
It
The chamber B may be heated at will by a stove pipe or by a steam pipe or
otherwise. In the drying chamber C are placed above each other a number of
diaphragms D formed as double inclined planes or inverted gutters causing the
materials operated on to tumble about while air passes up through them. At the
bottom of C there are funnels F each leading to an orifice by which the dried
materials can be from time to time discharged. Around the lower part of C there
is formed a passage E from which air passes into the chamber by orifices e
opening into the chamber under the lowest of the diaphragms D. The air is
supplied to the passage E either freely or by any suitable fan or blower.
is warmed when required by a stove pipe e¹ or it might be a steam pipe. A
single stove G may serve to heat the passage E, the chamber B and the flue ', or
there might be several such stoves, provided with suitable dampers .
diaphragms D at one level cross those at the next level, and the spaces between
those of cach level are vertically above the diaphragms two levels below. Each
diaphragm may be like a simple roof as shewn in Fig. 5 or it may be louvred as
shewn in Figs. 6 and 7 so as to give free passage for air, being made up of plain
plates with intermediate corrugated plates. When the diaphragms are made as
shewn in Fig. 5, they have openings d through their ridges which can be closed by
slides d worked from outside by rods d". These openings are immediately below
the diaphragms crossing them above.
The apparatus operates as follows:-
The
The material to be dried is charged into the chamber A whence it runs by the
funnels a into the drying chamber C where it is distributed uniformly as it slides
and tumbles over the sloping diaphragm D, exposed to the evenly distributed air
circulation which is promoted when required by the draught of the chimney or
by blowing air into the passage E. As portions of the material are dried they are
withdrawn from the openings f, allowing a farther quantity of the material to

page_text: descend into the drying chamber so that by feeling material from time to time
to A and drawing off dried material from the drying operation goes on continually
the material descending while air ascends through it. Should the material be so
fine or so moist that air cannot.readily pass through it, the slides may for a time
be opened, allowing air to pass directly upwards. Disinfectants may be applied
when in form of gases or vapours in adinixture with the air admitted, or when in
the form of powders they may be mixed with the material fed at A.
Dated this 28th day of March 1891,
ABEL & IMRAY,
Agents for the Applicant,
COMPLETE SPECIFICATION.
Improvements in Apparatus for Drying and Disinfecting Cereals and
other Granular or Subdivided Materials.
I, PAOLO BORGARELLI of Turin in the Kingdom of Italy, do bereby 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 a continuously acting drying apparatus with air circula-
tion applicable to granular or subdivided materials, specially adapted for drying and
seasoning cereals with or without means of disinfecting.
The principal feature of my invention is in the form and arrangement of
diaphragms and passages so as to effect continual mixture of the materials and
expose all parts of them to the air.
shall describe drying apparatus according to my invention referring to the
drawings accompanying my Provisional Specification.
Fig. 1 is a vertical section, Figs. 2 and 3 are sectional plans on X X and Y Y
respectively.
Fig. 4 is a sectional plan of the upper part.
Figs. 5, 6 and 7 show details.
The apparatus consists of a chamber which may be of rectangular or circular
section divided into several superposed compartments.
The uppermost A for feeding has at its bottom several funnels a which conduct
the material into C. Under the funnels a there is a chamber B where collects the
air which has passed through the apparatus, and whence it is discharged by an
orifice which may have a chimney or other appliance connected to it for
draught.
The chamber B may be heated at will by a stove pipe or by a steam pipe or
otherwise. In the drying chamber C are placed above each other a number of
diaphragms D formed as double inclined planes or inverted gutters causing the
materials operated on to tumble about while air passes up through them. At the
bottom of C there are funnels F each leading to an orifice f by which the dried
materials can be from time to time discharged. Around the lower part of C there
is formed a passage E from which air passes into the chamber C by orifices e
opening into the chamber under the lowest of the diaphragms D. The air is
supplied to the passage E either freely or by any suitable fan. or blower. It is
warmed when required by a stove pipe e or it might be a steam pipe. A single
stove G may serve to heat the passage E, the chamber B and the flue ', or there
might be several such stoves, provided with suitable dampers h. The diaphragms D
at one level cross those at the next level, and the spaces between those of each
level are vertically above the diaphragmns two levels below. Each diaphragm may
be like a simple roof as shewn in Fig. 5 or it may be louvred as shewn in Figs. 6
and 7 so as to give free passage for air, being made up of plain plates with inter-
mediate corrugated plates. When the diaphragms are made as shewn in Fig. 5,
they have openings d through their ridges which can be closed by slides d' worked

page_text: from outside by rods ". These openings are immediately below the diaphragms
crossing them above.
The apparatus operates as follows.
The material to be dried is charged into the chamber A whence it runs by the
funnels a into the drying chamber C, where it is distributed uniformly as it slides
and tumbles over the sloping diaphragms D, exposed to the evenly distributed air
circulation which is promoted when required by the draught of the chimney & or
by blowing air into the passage E. As portions of the material are dried they are
withdrawn from the openings, allowing a farther quantity of the material to
descend into the drying chamber, so that, by feeding material from time to time
to A and drawing off dried material from, the drying operation goes on con-
tinually, the material descending while air ascends through it. Should the material
be so fine or so moist that air cannot readily pass through it, the slides d¹ may
for a time be opened, allowing air to pass directly upwards. Disinfectants may
be applied when in form of gases or vapours in admixture with the air
admitted, or when in the form of powders they may be mixed with the material
fed at A.
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
clain is.
In apparatus for drying and disinfecting cereals and other granular or sub-
divided materials, which descend while air ascends through them the use of roof
shaped diaphragms arranged in several tiers alternately crossing each other, sub-
stantially as described and shewn in the drawings.
Dated this 22nd day of December 1891.
ABEL & IMRAY,
Agents for the Applicant.