Machine for Cleaning and Preparing Grain and other Cereals.
Year: 1885

page_text: Machine for Cleaning and Preparing Grain and other Cereals.
I, HERBERT JOHN HADDAN, of 67, Strand, in the City of Westminster, Civil
Engineer, do hereby declare the nature of said invention for MACHINE FOR
CLEANING AND PREPARING GRAIN AND OTHER CEREALS, & communication to me
from abroad by Emil Fritsch, of 18, Katharinenstrasse, Leipzig, in the Kingdom
of Saxony, to be as follows:-
This invention relates to machinery for cleaning grain and for breaking off the
points or germs.
The improved machine chiefly comprises an upright shaft to which is secured a
millstone or burr of porcelain, emery, cast iron or other suitable material, hollowed
out concentrically so that the upper surface forms an inverted cone; a conical brush
suspended above the burr and fitting into the hollow upper surface of the same, the
burr being adapted to turn with the shaft, while the brush is held stationary and
provided in the centre with an opening through which the grain is allowed to fall
upon the burr or lower stone. The bristles are placed sufficiently close together to
prevent any grain from passing between them. If grain is fed through the eye
of the brush or upper stone, the centrifugal force will cause it to travel upward and
outward over the conical surface of the lower stone until it falls over the outer edge
of the latter. Two or more sets of stones and brushes may be mounted on the
same shaft one over the other, and treat the grain consecutively. To prevent the
dust, germs and husks detached from the grain by the upper set from falling upon
the lower set and mixing with the grain, a ventilation is provided, which sucks the
dust into radial channels leading from the centre of the stone to the circumference
and delivering the dust into one or more flues placed outside the casing which
surrounds the machine. The ventilating channel is-formed between a pair of flat
horizontal plates placed underneath the burr and delivering the product equally
on the whole circumference. The stones are surrounded by a cylindrical jacket
roll

page_text: of sheet iron provided with adjustable slots or perforations situated opposite the
ventilating channels, so that the suction current entering at the circumference
passes through the grain falling from the top and carries away the light particles.
The distance between the stone and the brush may be regulated by lifting or
lowering the shaft in the well known manner.
Machine for Cleaning and Preparing Grain and other Cereals.
I, HERBERT JOHN HADDAN, of 67 Strand, in the County of Middlesex, Civil
Engineer, do hereby declare the nature of this Invention, a communication to me
from abroad by Emil Fritsch of 18 Katharinenstrasse, Leipzig, in the Kingdom of
Saxony, 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 for breaking off the
points or germs.
Fig. 1 shows the principal part of the invention.
Fig. 2 a machine embodying the same, partly in section.
Fig. 3 a plan view of the same.
The improved machine chiefly comprises an upright shaft, to which is secured a
millstone or burr of stone, porcelain, emery, cast iron or other suitable material, A¹,
Fig. 1 and A Fig. 2, hollowed out concentrically, so that the upper surface forms
an inverted cone, a conical brush B, suspended above the burr and fitting into the
hollow upper surface of the same, the burr being adapted to turn with the shaft,
while the brush is held stationary and is provided in the centre with an opening D,
through which the grain is allowed to fall upon the burr or lower stone. The
bristles are placed sufficiently close together to prevent any grain from passing
between them. When grain is fed through the eye or centre of the brush, the
centrifugal force will cause it to travel upward and outward over the conical
surface of the stone or burr, until it falls over the outer edge of the latter. Two
or more sets of stones and brushes may be mounted on the same shaft, one above
the other, and the grain treated consecutively by each set (Fig. 2). To prevent
the dust germs and husks detached from the grain by the upper set from falling
upon the lower set and mixing with the grain, a system of ventilation is provided,
which sucks the dust into radial channels leading from the centre of the stone
to the circumference and delivers the same into one or more flues, placed outside

page_text: the casing, which surrounds the machine. The ventilating channel F is formed
between a pair of flat horizontal plates E placed underneath the burr and
delivering the product equally on the whole circumference. The stones are
surrounded by a cylindrical jacket of sheet iron provided with adjustable slots
or perforations G, situated opposite the ventilating channels, so that the air
current entering at the circumference passes through the grain falling from the
top and carries away the light particles.
The distance between the stones and the brushes may be regulated by lifting
or lowering the shaft in the well known manner.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, I declare that what I claim is:
In machines for cleaning grain :
1.) The application of a burr or stone A or A¹, the upper surface of which forms
an inverted cone and above which a correspondingly shaped conical brush B is.
suspended.
2.) The application of a central ventilating channel F formed between a pair
of flat horizontal plates E and fed with air by adjustable slots or perforations G,
this ventilation serving to deliver the dust into one or more flues the whole
substantially as described.