IMPROVEMENTS IN APPARATUS FOR REMOVING OR SEPARATING IMPURITIES FROM GRAIN, WHOLLY OR PARTIALLY COMPOSED OF IRON OR OTHER METALLIC SUBSTANCES
Year: 1880

page_text: LETTERS PATENT to Augustus Bryant Childs, of No. 70, Fenchurch Street,
London, for an Invention of "IMPROVEMENTS IN APPARATUS FOR REMOVING
OR SEPARATING IMPURITIES FROM GRAIN, WHOLLY OR PARTIALLY COMPOSED
OF IRON OR OTHER METALLIC SUBSTANCES." A communication from abroad
by Gottlob Schaeffer, of Goeppingen, Wurtemberg, in the Empire of Germany.
"
PROVISIONAL SPECIFICATION left by the said Augustus Bryant Childs at
the Office of the Commissioners of Patents on the 11th February 1880.
AUGUSTUS BRYANT CHILDS, of No. 70, Fenchurch Street, London.
"
IMPROVE-
MENTS IN APPARATUS FOR REMOVING OR SEPARATING IMPURITIES FROM GRAIN,
WHOLLY OR PARTIALLY COMPOSED OF IRON OR OTHER METALLIC SUBSTANCES." A
communication from abroad by Gottlob Schaeffer, of Goeppingen, Wurtemberg, in
the Empire of Germany.
It is found that wheat and other grain in the mass largly contains metallic
particles composed of tacks, shoe pins, screws, pieces of wire and metal in other
forms, which when allowed to pass between the grinding surface of millstones, or the
crushing surfaces of roller mills, are liable to do great damage to said surfaces, and
in some cases producing sufficient heat in millstones to cause fire.
The object of this improvement is to remove said metallic substances before or at
the time of crushing or grinding the grain, by the attractive force of one or more
or a series of magnets sufficiently magnetized to attract the metallic impurities,
wholly or partially composed of metal or metallic substances, from the grain, as it is
allowed to pass to the millstones or crushing rollers, and is supplemental to my
Patent dated May 11th 1873, No. 1903, for an improved mode of cleaning grain.
The following is a description of the construction of the apparatus when usually
applied to millstones and crushing rollers:-
The magnets are usually secured in position between two cast iron standards or
other suitable means and material; six or a greater or less number of magnets of
the horseshoe form are placed between said standards, in one, two, or more rows,
and are held in position by two longitudinal screw bolts applied to each row of
magnets; one of the bolts pass through the lower part of the said standards, and
above the bend of the magnet, while the other bolt, which has a quadrangular or
square form when it comes in contact with the magnets, passes through the upper

page_text: ends of the standards, and between the two poles of the magnet, and the magnets
are thereby held in position by the two longitudinal screw bolts, as before
described. The clamping bolt passing between the poles of the magnet is made
square in order to fill up the space between the poles of the magnet, to produce a
plain surface at their ends for allowing the grain to pass over freely.
To prevent the contact of the magnets a layer of paste board is placed between
them at their lower ends, and a layer of white metal between the pole ends of the
magnets. The ends of the magnets are usually placed on an incline from the
horizontal at an angle of about 40°, more or less, to permit the grain to pass freely
from the feeding apparatus or hopper to the mill stone or crushing rollers. The
pole ends of the magnets are usually placed on a plain with the surface of the
feeding board or shoot over which the grain passes from the hopper, or they may
project above or below the plain if desired. The hopper is provided with a
regulating feeding gate to graduate the quantity of grain passing to the mill; side
pieces are affixed to the plain to which the magnets are arranged, and over which
the grain passes for enclosing it and conducting the grain to the mill. The lower
ends and sides of the magnets between the cast iron standards are enclosed by a
wooden frame or casing.
The whole apparatus is so united and held together by the longitudinal clamping
bolts, that the magnets may be placed and arranged in any position for working
to suit the machine to which they are applied.
As the wheat or other grain comes from the hopper it passes over the magnets,
and any metallic substance that may be with it are attracted and retained by the
action of the magnets, while the grain thus freed from metallic impurities pass on
to the mill to be ground or crushed. After a few hours working the magnets will
become loaded with metallic impurities, when it will be necessary to stop the
machine or feed for a few minutes, for removing the iron particles adhering to the
magnets, into any suitable receptacle made for the purpose.
My improved magnetic apparatus may be arranged to any machine used for
treating grain, when it is desired to separate metallic substances from the grain in
the process of cleaning with as much efficiency as when it is applied to millstones or
crushing rollers.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Augustus Bryant Childs in the Great Seal Patent Office on the
11th August 1880.
AUGUSTUS BRYANT CHILDS, of No. 70, Fenchurch Street, London. "IMPROVE-
MENTS IN APPARATUS FOR REMOVING OR SEPARATING IMPURITIES FROM GRAIN,
WHOLLY OR PARTIALLY COMPOSED OF IRON OR OTHER METALLIC SUBSTANCES." A
communication from abroad by Gottlob, Schaeffer, of Goeppingen, Wurtemberg, in
the Empire of Germany.
This Invention relates to improvements in an apparatus for removing or
separating impurities from grain, wholly or partially composed of iron or other
metallic substances capable of being attracted by magnetic force, it being found
that wheat and other grain in the mass largely contains metallic particles composed
of tacks, shoe pins, screws, pieces of wire and metal in other forms, which when
allowed to pass between the grinding surfaces of millstones or the crushing surfaces
of roller mills are liable to do great damage to said surfaces, and in some cases
producing sufficient heat in millstones to cause fire. The object of this improve-
ment is to remove said metallic substances at or before the time of crushing
or grinding the grain by the attractive force of one or more or a series of magnets
sufficiently magnetized to attract the metallic impurities, wholly or partially
composed of metal or metallic substances, from the grain, as it is allowed to pass to
the mill stones or crushing rollers, and is supplemental to my Patent dated May
11th 1873, No. 1903, for an improved mode of cleaning grain.
The following is a description of the construction of the apparatus and mode
of applying it to use, reference being made to the accompanying Drawings and
letters of reference marked thereon, similar letters refering to corresponging parts.
Fig. 1 represents an end elevation of the improvement; Fig. 2 is a transverse
sectional view of same (through line Y, Y, Fig, 3), and Fig. 3 is a side or front
elevation of the apparatus.
A, A, are two cast iron or metal standards between which the magnets B, B, are
placed and held in position by two longitudinal bolts C, C; D is a layer of paste
board, and E is a layer of white metal placed between the magnets B, B, to prevent
their direct contact with each other. The magnets are enclosed within a wooden
frame or casing F, as fully represented in Figs. 1 and 2; G is the feeding board
placed on a plane with the pole ends of the magnets over which the grain passes,
and H is the hopper provided with a regulating feed gate I for distributing the
grain over the magnets; J, J, are side pieces attached to the plain for conducting it
over the magnets.
As before stated the magnets B are usually secured in position between two cast
iron standards A, A, or other suitable material and means; six or a greater or less
number of magnets B of the horseshoe form are placed between said standards in
one, two, or more rows, and are held in position by two longitudinal screw bolts C, C,
applied to each row of magnets; one of the bolts pass through the lower part of the
said standards and above the bend of the magnet, while the other bolt, which has a
quadrangular or square form when it comes in contact with the magnets, passes
through the upper ends of the standards, and between the two poles of the magnets,
as represented, and the magnets are thereby held in position by the two longi-
tudinal screw bolts C, C, as before described. The clamping bolt passing between
the poles of the magnet is made square in order to fill up the space between the
poles of the magnets, to produce a plane surface at their ends for allowing the grain
to pass over freely. To prevent the contact of the magnets B, a layer of paste
board D is placed between them at their lower ends, and a layer of white metal E
between the pole ends of the magnets. The ends of the magnets are usually
placed on an incline from the horizontal at an angle of about 40°, more or less, as

page_text: represented in Figs. 1 and 2, to permit the grain to pass freely from the feeding
apparatus or hopper H to the mill stone or crushing rollers. The pole ends of the
magnets are usually placed on a plane with the surface of the feeding board or
shoot G over which the grain passes from the hopper H, or they may project above
or below the plane if desired. The hopper is provided with a regulating feed gate
I to graduate the quantity of grain passing to the mill. Side pieces J are affixed
to the plane to which the magnets are arranged, and over which the grain passes
for enclosing it, and conducting the grain over the magnets to the mill. The
lower ends and sides of the magnets between the cast iron standards are enclosed
by a wooden frame or casing F. The whole apparatus is so united and held
together by the longitudinal clamping bolts that the magnets may be placed and
arranged in any position for working to suit the machine to which they are
applied.
As the wheat or other grain comes from the hopper H it passes over the
magnets B, and any metallic substance that may be with it are attracted and
retained by the action of the magnets, while the grain thus freed from metallic
impurities pass ou to the mill to be ground or crushed. After a few hours'
working the magnets will become loaded with metallic impurities, when it will
be necessary to stop the machine or feed for a few minutes for removing the iron
particles adhereing to the magnets into any suitable receptacle or vessel made for
the purpose.
My improved magnetic apparatus may be arranged to any machine used for
treating grain, when it is desired to separate metallic substances from the grain
in the process of cleaning, with as much efficiency as when it is applied to mill
stones or crushing rollers.
Having now described the construction and mode of applying the said apparatus
to use for removing metallic substances from grain in the process of cleaning,
grinding, or crushing it, what I claim is,―
1st. The mode of constructing and combining the several parts of the magnetic
apparatus together for removing particles of metal, capable of being attracted by
magnetic force, from corn or other grain in the process of treating it, as herein-
before described.
2nd. The combination of said magnetic apparatus to mill stones, roller mills, or
other machines for grinding, crushing, or cleaning grain, for purposes herein-
before described.
In witness whereof, I, the said Augustus Bryant Childs, have hereunto set my
hand and seal, this 28th day of July, in the year of our Lord 1880.